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PRECISION COOLING

LIEBERT DS� TECHNICAL DATA SUPPLEMENT

28-105kW8-30 TonsDownflow

60Hz

1

LIEBERT DS TECHNICAL DATA SUPPLEMENT

LIEBERT DS MODEL NUMBER

Cooling TypeA = Air-CooledD = Dual-Cooling, Air-CooledW = Water/GlycolK = GLYCOOLH = Dual-Cooling, Water-Cooled

Nominal kW028, 035, 042, 053, 070, 077, 105

Air DistributionDS = Downflow Standard

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

D S 0 3 5 A U A 0 E I * * * *

CompressorU - Semi-hermetic with four-step, R-407CS - Scroll, R-407CD - Digital Scroll, R-407CM - Semi-hermetic with four-step, R-22R - Scroll, R-22G - Digital, R-22

Rev Level= Rev 0

Humidification0 - NoneI - InfraredS - Steam Generating

Canister

Reheat Type0 - NoneE - 3-stage electricS - SCRW - Hot water

VoltageA - 460/3/60B - 575/3/60C - 208/3/60D - 230/3/602 - 380/3/60

Factory Configuration Number

2

Table 1 Air-cooled capacity data, R-22 refrigerantModel Size 028 035 042 053 070 077 105

FOUR-STEP SEMI-HERMETIC COMPRESSORNet Capacity Data kW (BTUH), Standard Air Volume and Evaporator Fan Motor75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 50% RH

Total kW (BTUH) 35.1(119,900)

35.2(120,000)

42.6(145,500)

51.7(176,500)

64.5(220,000)

71.9(245,400)

93.8(320,000)

Sensible kW (BTUH) 28.2(96,300)

31.0(105,800)

36.4(124,300)

45.6(155,800)

54.4(185,700)

60.1(205,100)

77.8(265,700)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 33.6(114,700)

33.7(114,900)

40.7(138,800)

49.6(169,200)

61.5(210,000)

68.6(234,300)

89.6(305,700)


30.3(103,500)

35.6(121,500)

44.7(152,500)

53.2(181,600)

58.8(200,700)

76.2(260,000)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 32.8(111,800)

32.8(112,100)

39.3(134,200)

48.4(165,100)

59.3(202,300)

66.9(228,200)

87.3(297,800)


32.8(112,100)

39.3(134,200)

48.4(165,100)

59.3(202,300)

63.1(215,200)

81.7(278,900)

Net Capacity Data kW (BTUH), Optional Air Volume and Evaporator Fan Motor75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 50% RH

Total kW (BTUH) 35.3(120,400)

34.4(117,400)

42.3(144,300)

50.8(173,500)

63.7(217,400)

70.9(242,000) �


34.4(117,400)

37.4(127,800)

50.8(173,500)

56.8(194,000)

61.4(209,600) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 33.8(115,200)

33.1(112,800)

40.2(137,300)

48.9(166,900)

60.6(206,800)

67.7(230,900) �


33.1(112,800)

36.5(124,600)

48.9(166,900)

55.4(189,200)

60.0(204,700) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 32.9(112,400)

33.1(112,800)

39.4(134,400)

48.9(166,900)

59.5(203,100)

65.9(225,000) �


33.1(112,800)

39.4(134,400)

48.9(166,900)

59.5(203,100)

65.9(225,000) �

SCROLL COMPRESSOR: DIGITAL STANDARDNet Capacity Data kW (BTUH), Standard Air Volume and Evaporator Fan Motor75°F DB, 62.5°F WB (23.9°C DB, 16.9°C WB) 50% RH

Total kW (BTUH) 29.6(100,900)

34.3(117,100)

40.3(137,600)

54.6(186,500)

68.0(232,200)

73.7(251,500)

92.9(316,900)


30.7(104,700)

35.5(121,100)

46.5(158,600)

55.8(190,600)

60.8(207,600)

77.5(264,400)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 28.4(97,000)

33.1(112,800)

38.6(131,900)

51.6(176,000)

65.2(222,600)

70.8(241,500)

88.9(303,500)


30.1(102,700)

34.7(118,600)

45.5(155,400)

54.8(186,900)

59.7(203,700)

75.9(259,100)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 27.7(94,600)

32.4(110,600)

37.8(128,900)

50.1(170,900)

63.6(217,200)

69.3(236,400)

86.8(296,100)


32.4(110,600)

37.8(128,900)

50.1(170,900)

58.6(200,000)

64.1(218,800)

81.5(278,200)


Total kW (BTUH) 29.3(100,000)

33.6(114,800)

39.7(135,600)

53.1(181,300)

67.2(229,200)

72.7(248,000) �


33.6(114,800)

36.4(124,400)

49.9(170,400)

58.2(198,700)

62.1(211,900) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 28.2(96,400)

32.4(110,700)

38.1(130,000)

50.6(172,800)

64.3(219,500)

69.7(237,900) �


32.4(110,700)

35.6(121,600)

50.6(172,800)

57.0(194,500)

60.8(207,600) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 28.2(96,400)

32.4(110,700)

37.7(128,500)

50.6(172,800)

62.6(213,800)

67.7(231,200) �


32.4(110,700)

37.7(128,500)

50.6(172,800)

62.6(213,800)

67.7(231,200) �

Note: All capacities are nominal values; actual performance will be ±5%.

3

Table 2 Air-cooled capacity data, R-407C refrigerantModel Size 028 035 042 053 070 077 105


Total kW (BTUH) 37.1(126,700)

37.3(127,200)

42.6(145,500)

57.9(197,500)

64.0(218,500)

70.9(241,900)

92.0(314,000)


31.3(106,800)

36.0(123,000)

45.2(154,200)

53.7(183,200)

59.4(202,800)

76.7(261,900)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 35.4(120,800)

35.6(121,400)

40.6(138,500)

50.2(171,500)

61.1(208,600)

67.6(230,600)

87.7(299,400)


30.6(104,400)

35.2(120,100)

44.2(150,900)

52.5(179,200)

58.1(198,200)

75.0(256,000)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 34.5(117,600)

34.5(117,800)

38.9(132,900)

48.6(166,000)

59.4(202,900)

64.6(220,500)

85.4(291,400)


32.7(111,500)

38.9(132,900)

48.6(166,000)

56.2(191,800)

64.6(220,500)

80.5(274,600)


Total kW (BTUH) 37.4(127,600)

36.7(125,400)

42.2(143,900)

51.9(177,300)

63.1(215,400)

69.7(237,800) �


33.7(115,000)

37.1(126,700)

48.9(167,000)

56.3(192,300)

60.8(207,600) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 35.7(121,900)

34.9(119,100)

40.1(136,800)

49.1(167,500)

60.1(205,000)

66.5(226,800) �


32.8(112,000)

36.2(123,500)

49.1(167,500)

54.9(187,500)

59.4(202,700) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 34.7(118,300)

34.4(117,400)

38.9(132,900)

49.1(167,500)

58.6(199,900)

64.4(219,700) �


34.4(117,400)

38.9(132,900)

49.1(167,500)

58.6(199,900)

64.4(219,700) �


Total kW (BTUH) 30.7(104,800)

35.9(122,400)

40.0(136,400)

52.9(180,700)

65.8(224,600)

71.1(242,800)

91.9(313,700)


30.7(104,800)

35.0(119,300)

45.3(154,700)

54.4(185,600)

59.5(203,100)

76.7(261,800)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 29.3(99,900)

34.2(116,600)

38.1(130,000)

50.9(173,800)

63.2(215,600)

68.2(232,800)

87.9(300,000)


30.0(102,400)

34.1(116,500)

44.5(151,800)

53.4(182,200)

58.3(199,100)

75.1(256,200)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 28.5(97,200)

33.0(112,700)

36.9(125,800)

49.3(168,400)

61.7(210,600)

66.6(227,200)

85.7(292,400)


33.0(112,700)

36.9(125,800)

49.3(168,400)

57.2(195,100)

62.6(213,800)

80.6(275,100)


Total kW (BTUH) 30.6(104,500)

35.3(120,400)

39.4(134,600)

52.2(178,000)

64.7(220,800)

69.9(238,500) �


33.1(113,100)

36.0(123,000)

49.0(167,300)

57.0(194,400)

60.9(207,800) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 29.0(98,900)

33.2(113,400)

37.5(128,000)

49.6(169,200)

62.0(211,700)

67.0(228,700) �


33.2(113,400)

35.1(119,900)

49.6(169,200)

55.8(190,300)

59.6(203,500) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 28.9(98,800)

33.2(113,400)

36.8(125,600)

49.6(169,200)

60.4(206,100)

65.0(221,700) �


33.2(113,400)

36.8(125,600)

49.6(169,200)

60.4(206,100)

65.0(221,700) �


4

Table 3 Water-cooled capacity data, R-22 refrigerantModel Size 028 035 042 053 070 077 105


Total kW (BTUH) 38.9(132,800)

39.4(134,400)

46.1(157,200)

57.4(196,000)

70.1(239,300)

79.6(271,700)

103.5(353,100)


32.7(111,600)

37.8(129,000)

47.9(163,600)

56.7(193,500)

63.2(215,800)

81.8(279,100)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 37.0(126,400)

37.4(127,800)

43.7(149,300)

54.6(186,200)

66.6(227,300)

75.6(258,100)

98.7(336,800)


31.9(109,000)

39.4(134,500)

46.8(159,700)

55.3(188,900)

61.8(210,800)

80.0(273,200)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 36.0(122,900)

36.4(124,200)

42.5(144,900)

53.1(181,100)

64.7(220,700)

73.5(250,900)

96.1(328,100)


34.1(116,300)

39.4(134,500)

50.0(170,500)

59.0(201,500)

66.0(225,100)

85.6(292,200)


Total kW (BTUH) 39.5(134,800)

39.1(133,500)

45.7(156,100)

57.2(195,100)

69.6(237,400)

79.8(272,500) �


35.0(119,500)

38.8(132,500)

51.5(175,800)

59.2(201,900)

65.0(221,700) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 37.6(128,200)

37.2(126,800)

43.4(148,100)

54.3(185,300)

66.0(225,200)

76.2(259,900) �


34.1(116,400)

37.8(129,100)

50.2(171,300)

57.7(196,800)

63.6(216,900) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 36.5(124,600)

36.4(124,300)

41.9(142,900)

53.3(182,000)

63.7(217,500)

74.2(253,100) �


36.4(124,300)

41.9(142,900)

53.3(182,000)

63.7(217,500)

68.2(232,600) �


Total kW (BTUH) 31.3(106,800)

37.5(127,900)

42.7(145,800)

58.6(200,000)

73.2(249,800)

80.5(274,900)

100.3(342,400)


31.9(109,000)

36.4(124,400)

48.4(165,300)

58.0(197,800)

63.6(217,100)

80.5(274,700)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 30.0(102,500)

35.8(122,200)

40.7(139,000)

56.1(191,400)

70.1(239,200)

77.2(263,500)

95.8(326,800)


31.2(106,600)

35.6(121,500)

47.4(161,900)

56.8(194,000)

62.4(213,100)

78.8(269,000)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 29.0(98,900)

34.6(118,000)

39.4(134,500)

54.7(186,600)

68.5(233,700)

75.1(256,200)

93.4(318,700)


34.6(118,000)

39.4(134,500)

50.6(172,800)

60.7(207,200)

66.7(227,500)

84.4(288,000)


Total kW (BTUH) 31.3(106,800)

36.9(125,800)

42.2(144,000)

58.4(199,200)

72.5(247,500)

79.7(272,000) �


34.1(116,500)

37.4(127,700)

52.0(177,400)

60.4(206,000)

64.9(221,500) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 29.7(101,500)

35.3(120,500)

40.2(137,300)

55.7(190,200)

69.4(236,700)

76.4(260,900) �


33.3(113,800)

36.5(124,600)

50.8(173,300)

59.1(201,700)

63.7(217,300) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 29.7(101,500)

34.9(119,200)

39.4(134,500)

54.6(186,400)

67.6(230,700)

74.3(253,600) �


34.9(119,200)

39.4(134,500)

54.6(186,400)

63.4(216,300)

68.2(232,900) �


5

Table 4 Water-cooled capacity data, R-407C refrigerantModel Size 028 035 042 053 070 077 105


Total kW (BTUH) 39.9(136,300)

40.2(137,100)

47.7(162,800)

58.5(199,500)

72.3(246,600)

81.7(278,900)

103.6(353,700)


32.5(110,800)

38.1(130,000)

47.6(162,300)

57.0(194,600)

63.8(217,700)

81.4(277,900)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 37.8(129,000)

38.1(130,200)

45.1(153,800)

55.6(189,900)

68.5(233,700)

77.4(264,100)

98.7(336,800)


31.7(108,200)

37.1(126,600)

46.5(158,600)

55.6(189,900)

62.2(212,400)

79.7(271,900)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 36.7(125,100)

37.0(126,300)

43.6(148,900)

54.0(184,400)

66.4(226,500)

75.0(256,000)

96.0(327,700)


33.8(115,200)

39.5(134,900)

49.5(168,900)

59.2(202,100)

66.3(226,300)

85.1(290,500)


Total kW (BTUH) 40.3(137,600)

39.9(136,300)

47.3(161,600)

58.3(199,100)

71.8(244,900)

81.9(279,600) �


35.0(119,300)

39.2(133,700)

51.4(175,500)

59.8(204,000)

65.7(224,300) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 38.3(130,700)

37.9(129,300)

44.7(152,600)

55.4(189,100)

67.8(231,400)

77.9(265,900) �


34.1(116,300)

38.1(130,100)

50.1(171,100)

58.2(198,500)

64.2(219,100) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 37.2(126,800)

36.7(125,100)

43.3(147,800)

53.7(183,400)

64.4(219,900)

75.7(258,200) �


36.7(125,100)

40.8(139,200)

53.7(183,400)

64.4(219,900)

68.7(234,500) �


Total kW (BTUH) 31.8(108,700)

37.9(129,400)

43.0(146,900)

57.2(195,200)

71.7(244,700)

81.9(279,600)

102.3(349,000)


31.5(107,600)

36.2(123,500)

47.0(160,500)

56.8(193,800)

63.9(218,000)

80.9(276,000)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 30.3(103,300)

36.1(123,100)

40.9(139,500)

54.8(186,900)

68.4(233,500)

78.1(266,400)

97.3(332,200)


30.8(105,100)

35.3(120,500)

46.1(157,400)

55.6(189,800)

62.5(213,400)

79.1(270,000)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 29.4(100,300)

34.9(119,100)

39.0(133,100)

53.4(182,400)

66.7(227,500)

75.9(259,100)

94.6(323,000)


32.8(112,000)

39.0(133,100)

49.3(168,100)

59.3(202,500)

66.7(227,700)

84.5(288,400)


Total kW (BTUH) 31.8(108,700)

37.5(127,900)

42.7(145,800)

56.6(193,300)

70.7(241,300)

81.1(276,700) �


34.0(116,000)

37.3(127,400)

50.7(173,200)

59.3(202,500)

65.4(223,100) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 30.2(103,200)

35.5(121,100)

40.6(138,400)

54.2(185,100)

67.5(230,400)

77.2(263,400) �


33.1(112,900)

36.4(124,200)

49.6(169,400)

58.0(198,100)

63.9(218,100) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 29.8(101,800)

34.8(118,800)

39.1(133,400)

53.0(180,900)

64.6(220,600)

75.0(256,000) �


34.8(118,800)

39.1(133,400)

53.0(180,900)

64.6(220,600)

68.4(233,600) �


6

Table 5 Glycol-cooled capacity data, R-22 refrigerantModel Size 028 035 042 053 070 077 105


Total kW (BTUH) 32.6(111,100)

32.6(111,200)

38.4(131,200)

48.9(166,800)

58.8(200,800)

67.2(229,400)

91.3(311,600)


30.0(102,300)

34.7(118,600)

44.5(151,900)

52.2(178,000)

58.2(198,800)

79.5(271,300)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 31.2(106,500)

31.3(106,800)

36.8(125,500)

46.9(159,900)

56.3(192,000)

64.3(219,600)

87.6(299,000)


29.4(100,200)

34.0(115,900)

43.6(148,700)

51.0(174,100)

57.0(194,500)

77.9(265,900)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 30.4(103,900)

30.8(105,200)

36.2(123,500)

46.1(157,500)

55.1(188,000)

62.7(213,900)

85.4(291,600)


30.8(105,200)

36.2(123,500)

46.1(157,500)

55.1(188,000)

62.7(213,900)

85.4(291,600)


Total kW (BTUH) 32.2(110,000)

32.1(109,600)

37.8(129,100)

48.2(164,500)

57.1(194,900)

70.4(240,400) �


32.1(109,600)

35.7(121,800)

48.2(164,500)

57.1(194,900)

63.7(217,400) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 31.2(106,600)

30.8(105,200)

36.1(123,100)

46.4(158,300)

54.9(187,400)

67.5(230,500) �


30.8(105,200)

36.1(123,100)

46.4(158,300)

54.9(187,400)

62.3(212,800) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 30.8(105,100)

30.8(105,200)

36.1(123,100)

46.4(158,300)

54.9(187,400)

66.6(227,200) �


30.8(105,200)

36.1(123,100)

46.4(158,300)

54.9(187,400)

66.6(227,200) �


Total kW (BTUH) 28.2(96,200)

32.3(110,300)

37.2(126,800)

51.0(174,200)

63.5(216,800)

69.2(236,200)

87.3(297,800)


29.9(102,000)

34.3(116,900)

46.7(159,400)

54.0(184,400)

59.0(201,500)

75.2(256,800)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 27.2(92,700)

31.2(106,500)

35.8(122,100)

49.1(167,600)

61.0(208,200)

66.5(227,000)

83.7(285,800)


29.3(100,000)

33.5(114,500)

44.5(151,900)

53.0(180,800)

57.9(197,600)

73.7(251,600)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 26.6(90,900)

30.8(105,100)

35.4(120,800)

48.1(164,100)

59.2(201,900)

64.6(220,500)

81.6(278,400)


30.8(105,100)

35.4(120,800)

48.1(164,100)

59.2(201,900)

64.6(220,500)

81.6(278,400)


Total kW (BTUH) 28.1(95,900)

31.7(108,300)

36.4(124,400)

50.2(171,300)

62.3(212,600)

68.0(232,200) �


31.7(108,300)

36.4(124,400)

50.2(171,300)

56.3(192,100)

60.3(205,700) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 27.0(92,300)

30.6(104,500)

35.2(120,000)

48.4(165,200)

59.9(204,300)

65.3(223,000) �


30.6(104,500)

35.2(120,000)

48.4(165,200)

55.1(188,100)

59.0(201,500) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 27.0(92,300)

30.6(104,500)

35.2(120,000)

48.4(165,200)

59.0(201,400)

64.2(219,000) �


30.6(104,500)

35.2(120,000)

48.4(165,200)

59.0(201,400)

64.2(219,000) �


7

Table 6 Glycol-cooled capacity data, R-407C refrigerantModel Size 028 035 042 053 070 077 105


Total kW (BTUH) 33.1(113,000)

33.6(114,600)

40.1(136,900)

48.8(166,700)

59.1(201,700)

67.2(229,300)

89.8(306,500)


30.4(103,800)

36.0(123,000)

43.9(149,700)

51.7(176,500)

58.0(197,800)

78.5(267,900)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 31.8(108,400)

32.1(109,700)

38.4(131,000)

46.6(159,100)

56.6(193,100)

64.3(219,500)

86.2(294,200)


29.7(101,500)

35.2(120,300)

42.7(145,700)

50.6(172,700)

56.7(193,500)

76.9(262,600)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 30.9(105,600)

31.6(107,800)

37.6(128,200)

45.8(156,400)

54.8(187,200)

62.1(212,000)

83.6(285,400)


31.6(107,800)

37.6(128,200)

45.8(156,400)

54.8(187,200)

62.1(212,000)

83.6(285,400)


Total kW (BTUH) 33.5(114,300)

33.7(114,900)

40.0(136,500)

48.1(164,100)

57.9(197,600)

70.5(240,600) �


33.7(114,900)

37.6(128,300)

48.1(164,100)

54.3(185,300)

63.6(217,200) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 32.1(109,500)

32.3(110,200)

37.9(129,200)

46.0(156,900)

54.6(186,400)

67.4(230,200) �


32.3(110,200)

37.9(129,200)

46.0(156,900)

54.6(186,400)

62.2(212,400) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 31.6(107,800)

32.3(110,200)

37.9(129,200)

46.0(156,900)

54.6(186,400)

66.0(225,200) �


32.3(110,200)

37.9(129,200)

46.0(156,900)

54.6(186,400)

66.0(225,200) �


Total kW (BTUH) 28.2(96,200)

32.2(109,900)

36.9(125,900)

50.2(171,200)

62.1(211,800)

68.1(232,500)

86.1(293,800)


29.3(99,900)

33.8(115,200)

44.2(150,900)

52.9(180,600)

58.3(199,000)

74.4(253,900)

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 26.9(91,800)

30.8(105,000)

35.1(119,900)

48.2(164,600)

59.7(203,600)

65.5(223,500)

82.7(282,200)


28.6(97,600)

32.9(112,400)

43.4(148,000)

51.9(177,100)

57.2(195,200)

72.9(248,800)

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 26.4(90,100)

30.3(103,400)

34.6(118,100)

47.2(161,200)

57.7(196,900)

63.3(215,900)

80.0(273,100)


30.3(103,400)

34.6(118,100)

47.2(161,200)

57.7(196,900)

63.3(215,900)

80.0(273,100)


Total kW (BTUH) 28.1(95,900)

31.7(108,100)

36.0(122,800)

49.0(167,400)

60.8(207,600)

66.8(227,900) �


31.7(108,100)

36.0(122,800)

49.0(167,400)

55.4(189,200)

59.7(203,700) �

72°F DB, 60°F WB (22.2°C DB, 15.5°C WB) 50% RH

Total kW (BTUH) 26.9(91,800)

30.2(103,100)

34.4(117,400)

47.1(160,700)

58.5(199,700)

64.3(219,300) �


30.2(103,100)

34.4(117,400)

47.1(160,700)

54.3(185,300)

58.5(199,600) �

72°F DB, 58.6°F WB (22.2°C DB, 14.8°C WB) 45% RH

Total kW (BTUH) 26.9(91,800)

30.2(103,100)

34.4(117,400)

47.1(160,700)

57.4(195,800)

62.7(214,100) �


30.2(103,100)

34.4(117,400)

47.1(160,700)

57.4(195,800)

62.7(214,100) �


8

Table 7 Physical dataModel Size 028 035 042 053 070 077 105

EVAPORATOR COIL- A-Frame - Copper Tube/Aluminum Fin

Face Area - sq. ft. (sq. m) 17.1 (1.6) 17.1 (1.6) 17.1 (1.6) 24.7 (2.3) 24.7 (2.3) 24.7 (2.3) 32.3 (3.0)

Rows of Coil 3 3 3 3 3 3 3

Face Velocity - FPM (m/s)- STD Air Vol. 251 (1.3) 316 (1.6) 380 (1.9) 319.8 (1.6) 384.6 (1.9) 441.2 (2.2) 453.6 (2.3)

FAN SECTION - Downflow models - Fixed Pitch, Two Belts

Standard Air Volume - CFM(CMH)

4400(7476)

5500(9345)

6600(11213)

8000(13,593)

9600(16,311)

11,000(18,690)

14,750(25,062)

Standard Fan Motor hp (kW) 2.0 (1.5) 3.0 (2.2) 5.0 (3.7) 3 (2.2) 5 (3.7) 7.5 (5.6) 10.0 (0.75)

Optional Air Volume - CFM(CMH)

5500(9345)

6600(11213)

7200(12233)

9600(16,311)

11,000(18,690)

12,000(20,390) �

Optional Fan Motor hp 3 (2.2) 5 (3.7) 7.5 (5.6) 5 (3.7) 7.5 (5.6) 10 (7.5) �

Ext. Static Press- inches of water (Pa) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50)

Quantity of Fans 1 1 1 2 2 2 3

REHEAT SECTION

Electric Reheat - Three (3) Stage, Stainless Steel Fin TubularCapacity - kW (BTUH)*

- Standard Selection15.7

(53,600)17.2

(58,870)18.7

(63,805)27.6

(94,199)29.2

(99,660)31.4

(107,168)38.8

(132,355)

Capacity - kW (BTUH)*- Optional Selection

10.7(36,519)

12.2(41,639)

13.7(46,758)

17.6(60,069)

19.4(66,212)

19.4(66,212)

28.8(98,295)

Electric Reheat - SCR Control, Stainless Steel Fin Tubular

Capacity - kW (BTUH)* 15.7(53,600)

17.2(58,870)

18.7(63,805)

27.6(94,199)

29.2(99,660)

31.4(107,168)

38.8(132,355)

HUMIDIFIER SECTION

Infrared HumidifierCapacity, lb./hr. (kg/h) 11 (5) 11 (5) 11 (5) 22 (10) 22 (10) 22.0 (10.0) 22.0 (10.0)

Steam Generating Humidifier - Water conductivity between 200-500 micromhosis required for ideal operation

Capacity, lb./hr. (kg/h) 11 (5) 11 (5) 11 (5) 22 (10) 22 (10) 22.0 (10.0) 22.0 (10.0)

FILTER SECTION - Disposable Type - Nominal Sizes and Quantities

Downflow ModelsNominal Size, inches 25x16 25x16 25x16 25x16 25x16 25x16 25x16

Quantity 5 5 5 7 7 7 9

PIPING CONNECTION SIZES - Air-Cooled Liebert DS Unit

Liquid Line - O.D. Copper (2/unit) 1/2 1/2 1/2 5/8 5/8 5/8 5/8

Hot Gas Line - O.D. Copper (2/unit) 5/8 5/8 5/8 7/8 7/8 7/8 1-1/8

Infrared Humidifier - O.D. Copper 1/4 1/4 1/4 1/4 1/4 1/4 1/4

Condensate Drain - FPT 3/4 3/4 3/4 3/4 3/4 3/4 3/4

Condensate Drain w/ OptionalCondensate Pump - O.D. 1/2 1/2 1/2 1/2 1/2 1/2 1/2

Hot Water Reheat - O.D. Copper 5/8 5/8 5/8 5/8 5/8 5/8 5/8Note: Some options or combinations of options may result in reduced air flow�consult factory for recommendations.

9

Table 8 Water/glycol requirementsModel Size 028 035 042 053 070 077 105

WATER-COOLED SYSTEM - Semi-Hermetic Compressors, based on 75°F/50% room conditions

THR - BTUH(kW)

164,400(48.2)

173,200(50.7)

211,000(61.8)

230,500(67.5)

316,000(92.6)

365,100(107.0)

489,600(143.5)

75°F (23.9°C) EWT - GPM(l/m)

24.4(92.7)

25.7(97.7)

31.1(118.2)

33.9(128.8)

41.1(156.2)

47.5(180.5)

64.4(244.7)

Pressure Drop - ft. of water (kPa),with bypass

7.2(21.5)

5.4(16.1)

7.8(23.3)

5.8(17.3)

8.3(24.8)

10.9(32.5)

20.0(59.7)

Pressure Drop - ft. of water (kPa),3-way valve

15.7(46.8)

7.9(23.6)

11.4(34.0)

7.5(22.4)

10.7(31.9)

14.2(42.4)

22.5(67.1)

85°F (29.4°C) EWT - GPM(l/m)

38.0(144.4)

39.1(148.6)

52.7(200.3)

49.0(186.2)

67.2(255.4)

85.1(323.4)

119.9(455.6)


11.2(33.4)

11.8(35.2)

20.5(61.2)

11.6(34.6)

20.9(62.4)

32.5(97.0)

63.3(188.9)


16.7(49.8)

17.6(52.5)

31.2(93.1)

15.0(44.8)

27.4(81.8)

43.0(128.3)

72.2(215.4)

WATER-COOLED SYSTEM - Digital Scroll Compressors, based on 75°F/50% room conditions

THR - BTUH(kW)

137,700(40.3)

165,500(48.5)

194,300(56.9)

247,100(72.4)

316,000(92.6)

365,800(107.2)

474,300(139.0)

75°F (23.9°C) EWT - GPM(l/m)

20.8(79.0)

25(93.5)

28.7(109.1)

33.6(127.7)

41.1(156.2)

47.6(180.9)

62.0(235.6)


3.7(11.0)

5.0(14.9)

6.7(20.0)

5.7(17.0)

8.3(24.8)

11.0(32.8)

18.6(55.5)


5.3(15.8)

7.3(21.8)

9.8(29.2)

7.3(21.8)

10.7(31.9)

14.2(42.4)

21.0(62.7)

85°F (29.4°C) EWT - GPM(l/m)

30.5(115.9)

37.0(140.6)

45.4(172.5)

48.3(183.5)

67.2(255.4)

85.3(324.1)

104.7(397.9)


7.4(22.1)

10.7(31.9)

15.6(46.6)

11.3(33.7)

20.9(62.4)

32.6(97.3)

49.3(147.1)


11.0(32.8)

15.9(47.4)

23.5(70.1)

14.6(43.6)

27.4(81.8)

43.2(128.9)

56.0(167.1)

GLYCOL SYSTEM - 40% Ethylene

Flow Rate - GPM(l/m)

34.0(129.2)

35.0(133.0)

41.0(155.8)

52.0(197.6)

66.0(250.8)

76.0(288.8)

90.0(342.0)


11.6(34.6)

12.3(36.7)

16.4(48.9)

16.0(47.7)

24.9(74.3)

32.4(96.7)

44.2(131.9)


16.6(49.5)

17.5(52.2)

23.6(70.4)

20.3(60.6)

31.9(95.2)

41.7(124.4)

49.6(148.0)

DRYCOOLER - 95°F (35°C) Ambient Selection

Model D-174 D-174 D-225 D-260 D-310 D-350 D-466

Pressure Drop - ft. of water (kPa) 7.9 (23.6) 8.3 (24.8) 4.9 (14.6) 8.1 (24.2) 7.0 (20.9) 13.3 (39.7) 10.6 (31.6)

PIPE SIZE

Supply - O.D. Copper 1-5/8" (41) 1-5/8" (41) 1-5/8" (41) 2-1/8" (54) 2-1/8" (54) 2-1/8" (54) 2-1/8" (54)

Return - O.D. Copper 1-5/8" (41) 1-5/8" (41) 1-5/8" (41) 2-1/8" (54) 2-1/8" (54) 2-1/8" (54) 2-1/8" (54)

Maximum design water pressure: 150 psi (1034 kPa); 350 psi (2413 kPa) available as an option.

10

Table 9 Econ-O-Coil capacity data (dual-cool units)Model Size 028 035 042 053 070 077 105

WATER (NO GLYCOL)

Net Capacity Data kW (BTUH), Standard Air Volume and Evaporator Fan Motor75°F DB, 62.57 WB (23.9°C DB, 16.9°C WB) 50% RH, 45°F EWT

Total Capacity, kW(BTUH)

35.7(121,800)

41.8(142,800)

46.5(158,700)

54.2(184,900)

61.6(210,400)

67.2(229,200)

86.6(295,400)

Sensible Capacity, kW(BTUH)

29.8(101,600)

35.3(120,400)

39.8(135,800)

47.9(163,500)

54.9(187,500)

60.1(205,000)

78.4(267,700)

Flow Rate - GPM(I/m)

25.6(97.3)

30.5(115.9)

34.7(131.9)

39.6(150.5)

46.0(174.8)

51.5(195.7)

65.8(250.0)

Pressure Drop for Econ-O-Coil, Valve and Piping (Dual-Cooling Units)Pressure Drop - ft.

(kPa)10.8

(74.4)15.0

(103.4)19.0

(130.9)7.2

(49.6)9.5

(65.4)11.7

(80.6)15.6

(107.5)

40% ETHYLENE GLYCOL75°F DB, 62.57 WB (23.9°C DB, 16.9°C WB) 50% RH, 45°F EWT

Total Capacity, kW(BTUH)

30.8(105,200)

33.9(115,800)

38.8(132,500)

42.7(145,800)

52.0(177,500)

58.0(197,900)

70.3(239,900)

Sensible Capacity, kW(BTUH)

27.5(94,000)

31.5(107,500)

36.1(123,200)

42.2(144,100)

50.3(171,600)

55.8(190,600)

69.4(236,700)

Flow Rate - GPM(I/m)

34.0(129.2)

35.0(133.0)

41.0(155.8)

52.0(197.6)

66.0(250.8)

76.0(288.8)

90.0(342.0)

Pressure Drop for Free-Cooling Coil, Free-Cooling Valve, Condensers, Regulating Valve and Piping(GLYCOOL System)

Pressure Drop - ft. (kPa) 35.4(244)

37.5(258)

46.6(321)

28.9(199)

38.7(267)

46.4(320)

89.7(618.1)

Econ-O-Coil, A-Frame - Copper Tube/Aluminum Fin

Face Area - sq. ft. (sq. m) 17.1(1.6)

17.1(1.6)

17.1(1.6)

24.7(2.3)

24.7(2.3)

24.7(2.3)

32.3(3.0)

Rows of Coil 3 3 3 3 3 3 3

Face Velocity - FPM (m/s) - STD Air Vol. 251(1.3)

316(1.6)

380.0(1.9)

324.0(1.2)

389.0(2.0)

445.0(2.3)

436.0(2.3)

Fan Section - Downflow Models - Fixed Pitch, Two (2) Belt Drive PackageStandard Air Volume - CFM

(CMH)4400

(7476)5500

(9345)6600

(11,213)8000

(13,592)9600

(16,310)11,000

(18,689)14,200

(24,126)

Fan Motor hp (kW) 2 (1.5) 3 (2.2) 5 (3.7) 5 (3.7) 7.5 (5.6) 10 (7.5) 15 (11.2)

Ext. Static Press - inches of water (Pa) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50) 0.2 (50)

Quantity of Fans 1 1 1 2 2 2 3Note: All capacities are nominal values; actual performance will be ±5%.

12

ELECTRICAL DATA

Reheat Options Electric, Std. kW None or Hot Water Electric, Std. kW None or Hot WaterHumidifier

OptionsInfrared or Steam

Generating CanisterInfrared or Steam

Generating Canister None None

ModelMotor

hp Volts 208 230 460 575 208 230 460 575 208 230 460 575 208 230 460 575

028 2.0FLA 66.4 63.2 31.8 25.2 55.4 52.5 26.6 23.9 66.4 63.2 31.8 24.7 42.1 41.4 20.8 16.5WSA 81.1 77.3 38.9 31.5 59.7 56.8 28.8 25.6 81.1 77.3 38.9 30.2 46.4 45.7 23 18.2OPD 80 80 40 30 70 70 35 30 80 80 40 30 60 60 30 25

028 3.0FLA 69.5 66.0 33.2 26.4 58.5 55.3 28.0 25.1 69.5 66.0 33.2 25.9 45.2 44.2 22.2 17.7WSA 84.2 80.1 40.3 33 62.8 59.6 30.2 26.8 84.2 80.1 40.3 31.4 49.5 48.5 24.4 19.4OPD 90 80 40 30 80 70 35 30 90 80 40 30 60 60 30 25

035 3.0FLA 72.9 69.4 34.5 26.4 65.3 62.1 30.6 26.1 72.9 69.4 34.5 26.4 52.0 51.0 24.8 18.7WSA 88.5 84.4 41.9 33.0 70.5 67.3 33.1 28.0 88.5 84.4 41.9 32.0 57.2 56.2 27.3 20.6OPD 90 90 45 35 90 80 40 35 90 90 45 35 70 70 35 25

035 5.0FLA 79.0 75.0 37.3 28.6 71.4 67.7 33.4 28.3 79.0 75.0 37.3 28.6 58.1 56.6 27.6 20.9WSA 94.6 90.0 44.7 35.8 76.6 72.9 35.9 30.2 94.6 90.0 44.7 34.2 63.3 61.8 30.1 22.8OPD 100 100 45 35 90 90 45 35 100 100 45 35 80 80 40 30

042 5.0FLA 86.5 82.7 41.6 36.1 86.4 82.7 41.6 36.1 86.5 82.5 41.4 32.5 73.1 71.6 35.8 28.7WSA 104 99.3 49.9 39.1 93.5 89.8 45.1 38.9 104.0 99.3 49.9 39.1 80.2 78.7 39.3 31.5OPD 110 110 50 50 110 110 50 50 110 110 50 45 100 100 50 40

042 7.5FLA 94.0 89.5 45.0 39.0 93.9 89.5 45.0 39.0 94.0 89.3 44.8 35.4 80.6 78.4 39.2 31.6WSA 111.5 106.1 53.3 42.0 101.0 96.6 48.5 41.8 111.5 106.1 53.3 42.0 87.7 85.5 42.7 34.4OPD 125 110 60 50 125 110 60 50 125 110 60 45 110 110 50 45

053 3.0FLA 112.1 107.2 53.9 41 101.4 96 49.2 39.5 112.1 107.2 53.9 41 74.8 73.8 37.6 27.9WSA 137.5 131.6 66.2 50.8 109.4 104.0 53.3 42.5 137.5 131.6 66.2 50.3 82.8 81.8 41.7 30.9OPD 150 125 70 50 125 125 60 50 150 125 70 50 110 110 50 40

053 5.0FLA 118.2 112.8 56.7 43.2 107.5 101.6 52.0 41.7 118.2 112.8 56.7 43.2 80.9 79.4 40.4 30.1WSA 143.6 137.2 69.0 53.5 115.5 109.6 56.1 44.7 143.6 137.2 69.0 52.5 88.9 87.4 44.5 33.1OPD 150 150 70 50 125 125 70 50 150 150 70 50 110 110 60 45

070 5.0FLA 127.5 122.1 59.5 46.1 126.1 120.2 57.6 46.1 127.5 122.1 59.5 45.4 99.5 98 46 34.5WSA 155.2 148.8 72.5 55.2 136.5 130.6 62.4 49.7 155.2 148.8 72.5 55.2 109.9 108.4 50.8 38.1OPD 175 150 80 60 175 150 80 60 175 150 80 60 150 125 70 50

070 7.5FLA 135.0 128.9 62.9 49.0 133.6 127.0 61.0 49.0 135.0 128.9 62.9 48.3 107.0 104.8 49.4 37.4WSA 162.7 155.6 75.9 58.1 144.0 137.4 65.8 52.6 162.7 155.6 75.9 58.1 117.4 115.2 54.2 41.0OPD 175 175 80 60 175 175 80 60 175 175 80 60 150 150 70 50

077 7.5FLA 145 138.4 64.4 52.6 145.0 138.4 64.0 52.6 140.7 134.6 64.4 50.1 118.4 116.2 52.4 41.0WSA 169.8 162.8 77.8 60.4 156.8 150.2 69.2 56.6 169.8 162.8 77.8 60.4 130.2 128.0 57.6 45.0OPD 200 175 90 70 200 175 80 70 175 175 90 70 175 175 70 60

077 10.0FLA 151.6 144.4 67.4 54.6 151.6 144.4 67.0 54.6 147.3 140.6 67.4 52.1 125.0 122.2 55.4 43.0WSA 176.4 168.8 80.8 62.4 163.4 156.2 72.2 58.6 176.4 168.8 80.8 62.4 136.8 134.0 60.6 47.0OPD 200 200 90 70 200 200 90 70 200 175 90 70 175 175 80 60

105 10.0FLA 171.6 164.4 89.8 69.8 171.6 164.4 89.8 69.8 167.0 163.7 85.2 64.7 145.0 142.2 78.2 58.2WSA 201.1 197.6 103.0 78.1 185.9 178.7 97.8 75.7 201.1 197.6 103.0 78.1 159.3 156.5 86.2 64.1OPD 225 225 125 90 225 225 125 90 225 225 125 90 200 200 110 80

105 15.0FLA 187.0 178.4 96.8 75.8 187.0 178.4 96.8 75.8 182.4 177.4 92.2 70.7 160.4 156.2 85.2 64.2WSA 216.5 211.6 110.0 84.1 201.3 192.7 104.8 81.7 216.5 211.6 110.0 84.1 174.7 170.5 93.2 70.1OPD 250 225 125 100 250 225 125 100 250 225 125 100 225 225 125 90

Notes:1. Reduced reheat for 028, 035, and 042 models is 10kW.2. Reduced reheat for 053, 070, and 077 models is 15kW.3. Consult factory for SCR reheat values.4. Reduced reheat for 105 kW models is 20kW.

13

Reheat Options Electric, Downsized kWHumidifier

OptionsInfrared or Steam

Generating Canister None

ModelMotor

hp Volts 208 230 460 575 208 230 460 575

028 2.0FLA 55.4 52.5 26.6 23.9 52.6 50.3 25.3 19.6WSA 63.9 61.2 30.8 25.6 63.9 61.2 30.8 23.8OPD 70 70 35 30 70 70 35 25

028 3.0FLA 58.5 55.3 28 25.1 55.7 53.1 26.7 20.8WSA 67.0 64.0 32.2 26.8 67.0 64.0 32.2 25.0OPD 80 70 35 30 70 70 35 25

035 3.0FLA 65.3 62.1 30.6 26.1 59.1 56.5 28.0 21.3WSA 71.2 68.2 33.8 28.0 71.2 68.2 33.8 25.7OPD 90 80 40 35 80 80 40 30

035 5.0FLA 71.4 67.7 33.4 28.3 65.2 62.1 30.8 23.5WSA 77.3 73.8 36.6 30.2 77.3 73.8 36.6 27.9OPD 90 90 45 35 90 80 40 30

042 5.0FLA 86.4 82.7 41.6 36.1 73.1 71.6 35.8 28.7WSA 93.5 89.8 45.1 38.9 86.7 83.2 41.7 32.7OPD 110 110 50 50 100 100 50 40

042 7.5FLA 93.9 89.5 45.0 39.0 80.6 78.4 39.2 31.6WSA 101.0 96.6 48.5 41.8 94.2 90.0 45.1 35.6OPD 125 110 60 50 110 110 50 45

053 3.0FLA 101.4 96.0 49.2 39.5 84.3 80.8 40.9 31WSA 109.4 104.0 53.3 42.5 102.7 98.6 49.9 37.8OPD 125 125 60 50 110 110 60 45

053 5.0FLA 107.5 101.6 52.0 41.7 90.4 86.4 43.7 33.2WSA 115.5 109.6 56.1 44.7 108.8 104.2 52.7 40.0OPD 125 125 70 50 125 125 60 45

070 5.0FLA 126.1 120.2 57.6 46.1 99.7 98 46.5 35.4WSA 136.5 130.6 62.4 49.7 120.5 115.8 56.2 42.7OPD 175 150 80 60 150 125 70 50

070 7.5FLA 133.6 127.0 61.0 49.0 107.2 104.8 49.9 38.3WSA 144.0 137.4 65.8 52.6 128.0 122.6 59.6 45.6OPD 175 175 80 60 150 150 70 50

077 7.5FLA 145 138.4 64.0 52.6 118.4 116.2 52.4 41.0WSA 156.8 150.2 69.2 56.6 135.1 129.8 61.5 47.9OPD 200 175 80 70 175 175 70 60

077 10.0FLA 151.6 144.4 67.0 54.6 125.0 122.2 55.4 43.0WSA 163.4 156.2 72.2 58.6 141.7 135.8 64.5 49.9OPD 200 200 90 70 175 175 80 60

105 10.0FLA 171.6 164.4 89.8 69.8 145.0 142.2 78.2 58.2WSA 185.9 178.7 97.8 75.7 171.6 165.0 86.9 65.6OPD 225 225 125 90 200 200 110 80

105 15.0FLA 187.0 178.4 96.8 75.8 160.4 156.2 85.2 64.2WSA 201.3 192.7 104.8 81.7 187.0 179.0 93.9 71.6OPD 250 225 125 100 225 225 125 90

Notes:1. Reduced reheat for 028, 035, and 042 models is 10kW.2. Reduced reheat for 053, 070, and 077 models is 15kW.3. Consult factory for SCR reheat values.4. Reduced reheat for 105 kW models is 20kW.

14

Figure 1 Downflow, air-cooled 28-42kW (8-12 tons) with semi-hermetic compressor models

Table 10 Weights - downflow, air-cooled with semi-hermetic compressorsDry Weight, Approximate, lb. (kg)

Model Size 028 035 042

Air-Cooled 1720 (782) 1750 (795) 1780 (809)

Dual-Cool 1870 (850) 1900 (864) 1930 (877)

DPN000795

Rev. 0

34-3/4"(883mm)

Secondary Refrigerant

Piping Entrance

56-7/8"

(1445mm)Opening

AIR INLET OPENING

Secondary Entrance

High-Volt Connection(s)

TOP VIEW

2"

(51mm)85"

(2159mm)

86"

(2184mm)

FRONT VIEW

76"

(1930mm)

34"

(864mm)

24"

(610mm)

3/4"

(19mm)

24-3/8"

(919mm)Opening

Shaded areas indicate a

recommended minimum

clearance for component

access

Secondary Entrance

Low-Volt Connection(s)

NOTES:

only through top of unit.

Downflow electrical

connections can be made

from top or bottom of unit.

Filters are accessible

only through top of unit.

Downflow electrical



Bezels

15

Figure 2 Primary connection locations, downflow, air-cooled 28-42kW (8-12 ton) with semi-hermetic compressor models

Table 11 Piping data - downflow with semi-hermetic compressors

Point DescriptionX

in. (mm)Y

in. (mm)Connection Size / Opening

in. (mm)

R Refrigerant Access 63 (1600) 12-13/16 (325) 16-7/16 x 4 (4181 x 102)

L1 Liquid Line System 1 79-3/16 (2011) 15-3/4 (400) 1/2" Cu Sweat


G1 Hot Gas Discharge 1 73-7/8 (1877) 15-3/4 (400) 5/8" Cu Sweat


CDCondensate Drain* 46 (1168) 28-1/2 (724) 3/4" FPT

W/ Optional Pump 46 (1168) 28-1/2 (724) 1/2" Cu Sweat

HUM Humidifier Supply Line 53-1/2 (1359) 28 (711) 1/4" Cu Sweat

ECS Econ-O-Coil Supply 54-7/8 (1394) 21-9/16 (547) 1-5/8" Cu Sweat

ECR Econ-O-Coil Return 49-3/8 (1254) 29-3/4 (756) 1-5/8" Cu Sweat

HS Hot Water Reheat Supply Consult factory

HR Hot Water Reheat Return Consult factory

E1 Electrical Conn. (High Volt) 55-1/2 (1410) 30-1/4 (768) 2-1/2"


LV1 Electrical Conn. (Low Volt) 2-1/4 (57) 26 (660) 7/8"



B Blower Outlet 21-15/16 (558) 17-1/16 (433) 18-3/4 x 16-1/16 (477 x 434)* Field pitch Condensate Drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed

condensate trap. Do not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply with all local codes.

FRONT OF UNIT

A A

RB

OX

YBLOWER

OUTLET

FRONT VIEW

SECTION A-A

ALL DIMENSIONS

FROM REAR CORNER

OF FRAME

(panels not shown)

NOTE: Drawing not to scale.

Tolerance on

all piping dimensions

is ± 1/2 (13mm).

E1 E2

HUM

CD

ECR

ECS

L1 L2 G1 G2

LV1LV2LV3

DPN000803

Rev. 0

85

(2159mm)

18-3/4

(477mm)16-7/16

(418mm)

4(102mm)

16-1/16

(408mm)

33

(838mm)

"

"

"

"

"

"

"

16

Figure 3 Downflow, air-cooled 28-42kW (8-12 tons) with scroll or digital scroll compressor models

Table 12 Weights - downflow, air-cooled with scroll or digital scroll compressorsDry Weight, Approximate, lb. (kg)


Air-Cooled 1410 (641) 1440 (655) 1470 (668)

Dual-Cool 1560 (709) 1590 (723) 1620 (736)

DPN000796

Rev. 0

TOP VIEW

AIR INLET OPENING

Secondary Entrance

High Volt Connection(s)


Piping Entrance

Secondary Entrance

Low Volt Connections

34-3/4"

(883mm)

FRONT VIEW

Notes: Filters are accessible

through top of unit only.

Downflow electrical




recommended minimum

clearance be provided for

component access.

76"

(1930mm)

24 3/8"

(619mm)

73"

(1854mm)

72"

(1829mm)

34"

(864mm)

24"

(610mm)

56-7/8"

(1445mm)

3/4"

(19mm)

Opening

Opening

Bezels

2"

(51mm)

17

Figure 4 Primary connection locations, downflow, air-cooled 28-42kW (8-12 ton) with scroll or digital scroll compressor models

Table 13 Piping data - downflow with scroll or digital scroll compressors

Point DescriptionX

in. (mm)Y


in. (mm)

R Refrigerant Access 59-5/16 (1506) 13-3/4 (349) 11-3/16 x 4 (284 x 102)





CDCondensate Drain * 46 (1168) 28-1/2 (724) 3/4" FPT



ECS Econ-O-Coil Supply 54-7/8 (1394) 21-9/16 (547) 1-5/8" Cu Sweat

ECR Econ-O-Coil Return 49-3/8 (1254) 29-3/4 (756) 1-5/8" Cu Sweat










R

B

OX

Y

A A

E1 E2

HUM

CDECR

ECS

L1 L2 G1 G2

LV1LV2LV3


Tolerance on


is ± 1/2 (13mm).

4 (102mm)

16-1/16

(408mm)

BLOWER

OUTLET

FRONT OF UNIT

ALL DIMENSIONS FROM

REAR CORNER OF FRAME

(panels not shown)

FRONT VIEW

SECTION A-A

DPN000804

Rev. 0

72

(1829mm)"

18-3/4

(477mm)

"

33

(838mm)

"

"

"

11-3/16

(284mm)

"

"

18

Figure 5 Downflow, water/glycol/GLYCOOL 28-42kW (8-12 tons) - all compressor models

Table 14 Weights - downflow, water/glycol/GLYCOOL, all compressor modelsDry Weight, Approximate, lb. (kg)


Semi-HermeticCompressor

Water/Glycol 1870 (850) 1900 (864) 1930 (877)

GLYCOOL/Dual-Cool 2020 (918) 2050 (932) 2080 (945)

Scroll or Digital ScrollCompressor

Water/Glycol 1720 (782) 1750 (795) 1780 (809)


Condenser Cleanout Access

56-7/8

(1445mm)Opening

OpeningAIR INLET OPENING 24-3/8

(619mm)



Downflow electrical


from top of unit only.

3/4

(19mm)

Bezels

34-3/4

(883mm)

Secondary Condenser

Fluid Piping Entrance

Secondary Entrance

High Voltage Connection(s)

TOP VIEWSecondary Entrance


86

(2184mm)

24

(610mm)


recommended minimum

clearance for component access.

FRONT VIEW

85

(2159mm)

2

(51mm)

76

(1930mm)

DPN000894

Rev. 0

34

(864mm)

"

"

"

"

"

"

"

"

"

"

19

Figure 6 Primary connection locations, downflow, water/glycol/GLYCOOL 28-42kW (8-12 tons) - all compressor models

Table 15 Downflow water/glycol/GLYCOOL all compressor models

Point DescriptionX

in. (mm)Y


in. (mm)

W Water/glycol/GLYCOOL Access 79-15/16 (2031) 10-15/16 (278) 3-1/2 x 5-1/8 (89 x130)

WS Water/Glycol/GLYCOOL Supply 82-15/16 (2091) 11-15/16 (303) 1-5/8" Cu Sweat

WR Water/Glycol/GLYCOOL Return 82-15/16 (2091) 15-1/16 (383) 1-5/8" Cu Sweat

CDCondensate Drain * 46 (1168) 28-1/2 (724) 3/4" FPT



ECS Econ-O-Coil Supply ** 54-7/8 (1394) 21-9/16 (547) 1-5/8" Cu Sweat

ECR Econ-O-Coil Return ** 49-3/8 (1254) 29-3/4 (756) 1-5/8" Cu Sweat










** Supplied on Dual-Cooling Systems only (4-pipe system).

85"

(2159mm)

WS

WR

W

B

OX

Y

A A

E1 E2

HUM

CD

ECR

ECS

LV1LV2LV3


Tolerance on


is ± 1/2 (13mm).

BLOWER

OUTLET

FRONT OF UNIT

ALL DIMENSIONS FROM


(panels not shown)

FRONT VIEW

SECTION A-A

33

(838mm)

5-1/8 (130mm)

3-1/2

(89mm)

18-3/4

(477mm)

16-1/16

(408mm)

DPN000900

Rev. 0

"

"

"

"

"

"

20

Figure 7 Downflow, air-cooled 53-77kW (15-22 tons) with scroll or digital scroll compressor models

NOTES:

TOP VIEW

FRONT VIEW


Piping Entrance

AIR INLET OPENING

Opening

Opening

Secondary Entrance

High Voltage Connection(s)Secondary Entrance


34-7/8"

(886mm)

80"

(2032mm)

24-5/8"

(625mm)

3/4"

(19mm)Bezels

Filters are accessible


Downflow electrical



24"

(610mm)

34"

(864mm)Shaded areas indicate a

recommended minimum

clearance be provided for

component access.97"

(2464mm)

2"

(51mm)

76"

(1930mm)

98"

(2489mm)

DPN000925

Rev. 0

Table 16 Weights - downflow, air-cooled with scroll or digital scroll compressorsDry Weight, Approximate, lb. (kg)


Air-Cooled 1920 (873) 1970 (896) 2020 (919)

Dual-Cool 2100 (955) 2150 (978) 2200 (1000)

21

Figure 8 Primary connection locations, downflow, air-cooled 53-77kW (15-22 tons) with scroll or digital scroll compressor models

Table 17 Piping data - downflow with scroll or digital scroll compressors

Point DescriptionX

in. (mm)Y


in. (mm)R Refrigerant Access 81-3/4 (2076) 13-3/4 (349) 12-3/16 x 4 (310 x 102)L1 Liquid Line System 1 94-11/16 (2405) 15-3/4 (401) 5/8" Cu SweatL2 Liquid Line System 2 91-7/8 (2334) 15-3/4 (401) 5/8" Cu SweatG1 Hot Gas Discharge 1 88-3/4 (2255) 15-3/8 (391) 1-1/8" Cu SweatG2 Hot Gas Discharge 2 85-9/16 (2173) 15-3/8 (391) 1-1/8" Cu Sweat

CDCondensate Drain * 68-1/4 (1734) 29 (737) 3/4" FPTW/ Optional Pump 68-1/4 (1734) 29 (737) 1/2" Cu Sweat

HUM Humidifier Supply Line 75-1/2 (1918) 28 (711) 1/4" Cu SweatECS** Econ-O-Coil Supply 77-5/8 (1972) 23-5/8 (600) 2-1/8" Cu SweatECR** Econ-O-Coil Return 70-15/16 (1802) 23-5/8 (600) 2-1/8" Cu Sweat

HS Hot Water Reheat Supply Consult factoryHR Hot Water Reheat Return Consult factoryE1 Electrical Conn. (High Volt) 77-5/8 (1972) 30-1/8 (765) 2-1/2"E2 Electrical Conn. (High Volt) 74-3/8 (1889) 30-1/8 (765) 2-1/2"

LV1 Electrical Conn. (Low Volt) 2-1/4 (57) 26 (660) 7/8"LV2 Electrical Conn. (Low Volt) 2-1/4 (57) 28 (711) 7/8"LV3 Electrical Conn. (Low Volt) 2-1/4 (57) 30 (762) 7/8"B1 Blower Outlet 26-1/16 (662) 23-5/8 (600) 18-3/4 x 16-1/16 (477 x 434)B2 Blower Outlet 48-7/8 (1241) 23-5/8 (600) 18-3/4 x 16-1/16 (477 x 434)

* Field pitch Condensate Drain line a minimum of 1/8" (3.2 mm) per foot (305 mm). All units contain a factory-installed condensate trap. Do not trap external to the unit. Drain line may contain boiling water. Select appropriate drain system materials. The drain line must comply with all local codes.


DPN000929

Rev. 0

R

ECR

E1 E2

OX

A A

B2


Tolerance on


is ± 1/2" (13mm).

ALL DIMENSIONS FROM


(panels not shown)

FRONT VIEW

SECTION A-A

BLOWER

OUTLETBLOWER

OUTLET

18-3/4"

(476mm)

18-3/4"

(476mm)ECS

HUM CDLV1

LV2

LV3

B1

16-1/16"(408mm)

L1 L2 G1 G2

FRONT OF UNIT

97"

(2464mm)

33"(838mm)

4"(102mm)

12-3/16"

(310mm)

Y

22

Figure 9 Downflow, air-cooled 53-77kW (15-22 tons) with semi-hermetic compressor modelsSecondary Refrigerant

Piping Entrance80"

(2032mm)Opening

AIR INLET OPENING

TOP VIEW

34-7/8"

(886mm)

Secondary Entrance




Downflow electrical


from top or bottom of unit.Opening24-5/8"

(625mm)

3/4"

(20mm)Bezels

Secondary Entrance


109"

(2769mm) 24"

(610mm)


recommended minimum


access.

34"

(864mm)

108"

(2743mm)

2“

(51mm)

FRONT VIEW

DPN000924

Rev. 0

Table 18 Weights - downflow, air-cooled with semi-hermetic compressorsDry Weight, Approximate, lb. (kg)


Air-Cooled 2350 (1069) 2400 (1091) 2450 (1114)

Dual-Cool 2530 (1150) 2580 (1173) 2630 (1196)

23

Figure 10 Primary connection locations, downflow, air-cooled 53-77kW (15-22 tons) with semi-hermetic compressor models

Table 19 Piping data - downflow with semi-hermetic compressors

Point DescriptionX

in. (mm)Y


in. (mm)R Refrigerant Access 86 (2185) 12-7/8 (327) 16-7/16 x 4 (4181 x 102)L1 Liquid Line System 1 97 (2464) 15-7/8 (404) 5/8" Cu SweatL2 Liquid Line System 2 93-5/16 (2370) 15-7/8 (404) 5/8" Cu SweatG1 Hot Gas Discharge 1 90-5/8 (2302) 15-5/8 (396) 1-1/8" Cu SweatG2 Hot Gas Discharge 2 88 (2235) 15-5/8 (396) 1-1/8" Cu Sweat



HS Hot Water Reheat Supply Consult factoryHR Hot Water Reheat Return Consult factoryE1 Electrical Conn. (High Volt) 77-5/8 (1972) 30-1/8 (765) 2-1/2"E2 Electrical Conn. (High Volt) 74-3/8 (1889) 30-1/8 (765) 2-1/2"

LV1 Electrical Conn. (Low Volt) 2-1/4 (57) 26 (660) 7/8"LV2 Electrical Conn. (Low Volt) 2-1/4 (57) 28 (711) 7/8"LV3 Electrical Conn. (Low Volt) 2-1/4 (57) 30 (762) 7/8"B1 Blower Outlet 26-1/16 (662) 23-5/8 (600) 18-3/4 x 16-1/16 (477 x 434)B2 Blower Outlet 48-7/8 (1241) 23-5/8 (600) 18-3/4 x 16-1/16 (477 x 434)



R

ECR

E1 E2

OX

Y

A A

B2


Tolerance on


is ± 1/2" (13mm).

ALL DIMENSIONS FROM


(panels not shown)

FRONT VIEW

SECTION A-A

BLOWER

OUTLET

BLOWER

OUTLET

18-3/4"

(476mm)

18-3/4"

(476mm)ECS

HUM CD

4"

(102mm)

LV1LV2LV3

B1

16-1/16"(408mm)

16-7/16"

(418mm)

L1 L2 G1 G2

FRONT OF UNIT

108"

(2743mm)

33"

(838mm)

DPN000928

Rev. 0

24

Figure 11 Downflow, water/glycol/GLYCOOL 53-77kW (15-22 tons) - all compressor models



Semi-HermeticCompressor

Water/Glycol 2650 (1205) 2700 (1228) 2750 (1250)


Scroll or Digital ScrollCompressor

Water/Glycol 2220 (1010) 2270 (1032) 2320 (1055)


NOTES: Filters are accessible


Downflow electrical



Opening

Opening

80"

(2032mm)

34-7/8"

(886mm)

24-5/8"

(625mm)

3/4"

(20mm)

24"

(610mm)

109"

(2769mm)

34"

(864mm)

2“

(51mm) 108"

(2743mm)

Secondary Entrance

High Volt Connection(s)Secondary Entrance


AIR INLET OPENING

Bezels


recommended minimum


access,

TOP VIEW

FRONT VIEW

DPN000931

Rev. 0

25

Figure 12 Primary connection locations, downflow water/glycol/GLYCOOL 53-77kW (15-22 tons) - all compressor models


Point DescriptionX

in. (mm)Y


in. (mm)W Water/glycol/GLYCOOL Access 101-15/16 (2590) 10-15/16 (278) 3-1/2 x 5-1/8 (89 x 130)

WS Water/Glycol/GLYCOOL Supply 103-11/16 (2634) 12-1/4 (311) 2-1/8" Cu SweatWR Water/Glycol/GLYCOOL Return 103-11/16 (2634) 14-3/4 (375) 2-1/8" Cu Sweat

CDCondensate Drain * 68-1/4 (1734) 29 (737) 3/4" Cu SweatW/ Optional Pump 68-1/4 (1734) 29 (737) 1/2" Cu Sweat


HS Hot Water Reheat Supply Consult factoryHR Hot Water Reheat Return Consult factoryE1 Electrical Conn. (High Volt) 77-5/8 (1972) 30-1/8 (765) 2-1/2"E2 Electrical Conn. (High Volt) 74-3/8 (1889) 30-1/8 (765) 2-1/2"LV1 Electrical Conn. (Low Volt) 2-1/4 (57) 26 (660) 7/8"LV2 Electrical Conn. (Low Volt) 2-1/4 (57) 28 (711) 7/8"LV3 Electrical Conn. (Low Volt) 2-1/4 (57) 30 (762) 7/8"B1 Blower Outlet 26-1/16 (662) 23-5/8 (600) 18-3/4 x 16-1/16 (477 x 434)B2 Blower Outlet 48-7/8 (1241) 23-5/8 (600) 18-3/4 x 16-1/16 (477 x 434)



W Y

ECR

E1 E2

OX

A A

B2


Tolerance on


is ± 1/2" (13mm).

ALL DIMENSIONS FROM


(panels not shown)

FRONT VIEW

SECTION A-A

BLOWER

OUTLET

BLOWER

OUTLET

18-3/4"

(476mm)

18-3/4"

(476mm)ECS

HUM CD LV1LV2LV3

B1

16-1/16"(408mm)

FRONT OF UNIT

108"

(2743mm)

33"(838mm)

3-1/2"

(89mm)

5-1/8"(130mm)

DPN000933

Rev. 0

WSWR

26

Figure 13 Downflow, air-cooled 105kW (30 tons) - all compressor models

Table 22 Weights - downflow, air-cooled, all compressor modelsDry Weight, Approximate, lb. (kg)

Model Size 105

Semi-Hermetic CompressorsAir-Cooled 3040 (1382)

Dual-Cool 3380 (1536)

Scroll CompressorsAir-Cooled 2920 (1327)

Dual-Cool 3260 (1482)

AIR INLET OPENING Opening24-3/8" (619mm)



Downflow electrical



3/4" (19mm)Bezels

34-7/8" (886mm)


Piping Entrance

Secondary Entrance


TOP VIEW

Secondary Entrance


132"

(3353mm)

24" (610mm)


recommended minimum


FRONT VIEW

131"

(3327mm)

76"

(1930mm)

DPN0001012

Rev. 0

34"

(864mm)

27

Figure 14 Primary connection locations, downflow, air-cooled 105kW (30 tons) - all compressor models

DPN0001014

Rev. 0

R

ECR

E1 E2

OX

A A


Tolerance onall piping dimensionsis ± 1/2" (13mm).

ALL DIMENSIONS FROM


(panels not shown)

FRONT VIEW

SECTION A-A

B3

BLOWER

OUTLET

14-1/2"

(368mm)ECS

CDLV1LV2LV3

15-11/16"(398mm)

L1 L2

G1 G2

FRONT OF UNIT

131"

(3327mm)

33"(838mm)

4"(102mm)

16-7/16"(418mm)

Y

B1

BLOWER

OUTLET

14-1/2"

(368mm)

B2

BLOWER

OUTLET

14-1/2"

(368mm)

Table 23 Downflow air-cooled all compressor models

Point DescriptionX

in. (mm)Y


in. (mm)R Refrigerant Access 109 (2769) 14-3/4 (375) 16-7/16" x 4 (418 x 102)L1 Liquid Line System 1 121-3/4 (3092) 15-3/4 (400) 5/8" Cu SweatL2 Liquid Line System 2 118-1/8 (3000) 15-3/4 (400) 5/8" Cu SweatG1 Hot Gas Discharge 1 118-1/4 (3004) 13-1/4 (337) 1-1/8" Cu SweatG2 Hot Gas Discharge 2 115-5/8 (2937) 13-1/4 (337) 1-1/8" Cu Sweat


HUM Humidifier Supply Line 102-3/4 (2610) 30-3/4 (781) 1/4" Cu SweatECS Econ-O-Coil Supply ** 101-7/8 (2588) 28 (711) 2-5/8" Cu SweatECR Econ-O-Coil Return ** 94-9/16 (2402) 28 (711) 2-5/8" Cu SweatHS Hot Water Reheat Supply Consult factoryHR Hot Water Reheat Return Consult factoryE1 Electrical Conn. (High Volt) 99-3/4 (2534) 30-1/4 (768) 2-1/2"E2 Electrical Conn. (High Volt) 96-11/16 (2456) 30-1/4 (768) 2-1/2"

LV1 Electrical Conn. (Low Volt) 2 (51) 27-1/4 (698) 7/8"LV2 Electrical Conn. (Low Volt) 2 (51) 29-1/4 (742) 7/8"LV3 Electrical Conn. (Low Volt) 2 (57) 31 (787) 7/8"B1 Blower Outlet 27-7/8 (708) 17 (432) 14-1/2 x 15-11/16 (368 x 398)B2 Blower Outlet 52-1/16 (1322) 17 (432) 14-1/2 x 15-11/16 (368 x 398)B3 Blower Outlet 76-1/4 (1937) 17 (432) 14-1/2 x 15-11/16 (368 x 398)



28

Figure 15 Downflow, water/glycol/GLYCOOL 105kW (30 tons) - all compressor models

AIR INLET OPENING Opening24-3/8" (619mm)



Downflow electrical



3/4" (19mm)Bezels

34-7/8" (886mm)

Secondary Entrance


TOP VIEW

Secondary Entrance


132"

(3353mm)

24" (610mm)


recommended minimum


FRONT VIEW

131"

(3327mm)

76"

(1930mm)

DPN0001013

Rev. 0

34"

(864mm)


Model Size 105

Semi-Hermetic CompressorsWater/Glycol 3410 (1550)

GLYCOOL/Dual-Cool 3750 (1705)

Scroll CompressorsWater/Glycol 3290 (1495)

GLYCOOL/Dual-Cool 3630 (1650)

29

Figure 16 Primary connection locations, downflow, water/glycol/GLYCOOL 105kW (30 tons) - all compressor models

DPN0001015

Rev. 0

R

ECR

E1 E2

OX

A A


Tolerance onall piping dimensionsis ± 1/2" (13mm).

ALL DIMENSIONS FROM


(panels not shown)

FRONT VIEW

SECTION A-A

B3

BLOWER

OUTLET

14-1/2"

(368mm)ECS

CDLV1LV2LV3

15-11/16"(398mm)

W

WS

WR

FRONT OF UNIT

131"

(3327mm)

33"(838mm)

8"(203mm)

3-1/2"(89mm)

Y

B1

BLOWER

OUTLET

14-1/2"

(368mm)

B2

BLOWER

OUTLET

14-1/2"

(368mm)

HUM


Point DescriptionX

in. (mm)Y


in. (mm)W Water/Glycol/GLYCOOL Access 125-15/16 (3199) 7-15/16 (202) 3-1/2 x 8 (89 x 203)

WS Water/Glycol/GLYCOOL Supply 127-7/8 (3248) 9-1/16 (230) 2-1/8" Cu SweatWR Water/Glycol/GLYCOOL Return 127-7/8 (3248) 12-1/4 (311) 2-1/8" Cu Sweat


HUM Humidifier Supply Line 102-3/4 (2610) 30-3/4 (781) 1/4" Cu SweatECS Econ-O-Coil Supply ** 101-7/8 (2588) 28 (711) 2-5/8" Cu SweatECR Econ-O-Coil Return ** 94-9/16 (2402) 28 (711) 2-5/8" Cu SweatHS Hot Water Reheat Supply Consult factoryHR Hot Water Reheat Return Consult factoryE1 Electrical Conn. (High Volt) 99-3/4 (2534) 30-1/4 (768) 2-1/2"E2 Electrical Conn. (High Volt) 96-11/16 (2456) 30-1/4 (768) 2-1/2"LV1 Electrical Conn. (Low Volt) 2 (51) 27-1/4 (698) 7/8"LV2 Electrical Conn. (Low Volt) 2 (51) 29-1/4 (742) 7/8"LV3 Electrical Conn. (Low Volt) 2 (57) 31 (787) 7/8"B1 Blower Outlet 27-7/8 (708) 17 (432) 14-1/2 x 15-11/16 (368 x 398)B2 Blower Outlet 52-1/16 (1322) 17 (432) 14-1/2 x 15-11/16 (368 x 398)B3 Blower Outlet 76-1/4 (1937) 17 (432) 14-1/2 x 15-11/16 (368 x 398)



30

Figure 17 Dimensional data, 1-4 fan models

Figure 18 Dimensional data, 6-8 fan models

Table 26 Liebert DS air-cooled condenser selection

Refrigerant

Air-Cooled Condenser Selection Liebert DS Size

CondenserType

AmbientTemperature

°F (°C) 028 035 042 053 070 077 105

R-22

OutdoorCondenser

95 (35) CD*-165 CD*-165 CD*-205 CD*-205 CD*-308 CD*-308 CD*-415100 (38) CD*-165 CD*-205 CD*-205 CD*-308 CD*-415 CD*-415 CD*-510105 (41) CD*-205 CD*-205 CD*-308 CD*-308 CD*-415 CD*-510 CD*-616

OutdoorQuiet-LineCondenser


R-407C

OutdoorCondenser


OutdoorQuiet-LineCondenser

95 (35) CD*-214 CD*-214 CD*-286 CD*-286 CD*-409 CD*-409 CD*-572100 (38) CD*-214 CD*-214 CD*-286 CD*-409 CD*-477 CD*-572 N/A105 (41) CD*-286 CD*-286 CD*-409 CD*-409 CD*-572 CD*-572 N/A

Table 27 Liebert DS drycooler selection

DrycoolerType

AmbientTemperature

ºF (ºC)

Liebert DS Model

028 035 042 053 070 077 105

Outdoor Drycooler

95 (35) D-174 D-174 D-225-16 D-260 D-310 D-350 D-466100 (38) D-225-16 D-225-16 D-310 D-350 D-419 D-466 D-620-32105 (41) D-310-16 D-350-16 D-419 D-491-32 D-620-32 D-650-40 D-880-52

Outdoor Quiet-Line Drycooler

95 (35) D-173-16 D-178-16 D-205 DD-248 D-347-32 D-347-32 D-453100 (38) D-205-16 D-205-16 D-347-32 D-347-32 D-453-32 D-453-32 N/A105 (41) D-356-32 D-356-32 D-453-32 D-453-32 D-453-32 N/A N/A

Eyebolts for liftingcondenser provided on4, 6 & 8 fan models only

Outlet/inlet connection

Height to topof fan guard43-1/8" (1095mm)

37-7/8"(962mm)

L

C

18" (457mm)

43-3/16"(1097mm)

70"(1778mm)

43-9/16"(962mm)

Center leg provided on 4 & 8 fan models only

36" (914.4mm) clearancerecommended on all sides for properoperation andcomponent access

Outlet/inlet connections

86-3/4"(2203mm) Center leg provided on 4 & 8

fan models only

36" (914.4mm) clearancerecommended on all sidesfor properoperation andcomponent access.

18" (457mm)

C

37-7/8"(962mm)

Height to topof fan guard43-1/8" (1095mm)

70"(1778mm)

L 87-1/8"(2213mm)

31

Table 28 Liebert condenser dimensions

CondenserSize

Numberof Fans

Dimensions, in. (mm) Net Weightlb. (kg)A B C L

CD*-165 2 82 (2083) � 84 (2134) 91-1/2 (2324) 425 (193)

CD*-205 2 82 (2083) � 84 (2134) 91-1/2 (2324) 495 (225)

CD*-251 3 122 (3099) � 124 (3150) 131-1/2 (3340) 500 (227)

CD*-308 3 122 (3099) � 124 (3150) 131-1/2 (3340) 670 (305)

CD*-415 4 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 815 (370)

CD*-510 4 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 1188 (540)

CD*-616 6 122 (3099) � 164 (4166) 171-1/2 (4356) 1380 (627)

Table 29 Liebert Quiet-Line condenser dimensions

CondenserSize

Numberof Fans


CD*-143 2 82 (2083) � 84 (2134) 91-1/2 (2324) 515 (234)

CD*-214 3 122 (3099) � 124 (3150) 131-1/2 (3340) 840 (382)

CD*-286 4 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 1105 (502)

CD*-409 6 122 (3099) � 124 (3150) 131-1/2 (3340) 1380 (627)

CD*-477 6 122 (3099) � 124 (3150) 131-1/2 (3340) 1580 (718)

CD*-572 8 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 2430 (1104)

Table 30 Liebert drycooler dimensions

DrycoolerSize

Numberof Fans


D-174 2 82 (2083) � 84 (2134) 91-1/2 (2324) 605 (275)

D-225 2 82 (2083) � 84 (2134) 91-1/2 (2324) 685 (311)

D-260 3 122 (3099) � 124 (3150) 131-1/2 (3340) 826 (375)

D-310 3 122 (3099) � 124 (3150) 131-1/2 (3340) 886 (403)

D-350 3 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 946 (430)

D-419 4 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 1120 (509)

D-466 4 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 1150 (523)

D-491 4 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 1200 (545)

D-620 6 122 (3099) � 124 (3150) 131-1/2 (3340) 1940 (882)

D-650 6 122 (3099) � 124 (3150) 131-1/2 (3340) 2000 (909)

D-880 8 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 2730 (1241)

Table 31 Liebert Quiet-Line drycooler dimensions

DrycoolerSize

Numberof Fans


D-173 3 122 (3099) � 124 (3150) 131-1/2 (3340) 885 (402)

D-178 3 122 (3099) � 124 (3150) 131-1/2 (3340) 860 (391)

D-205 4 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 1070 (486)

D-248 4 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 1160 (527)

D-347 6 122 (3099) � 124 (3150) 131-1/2 (3340) 1780 (809)

D-356 6 122 (3099) � 124 (3150) 131-1/2 (3340) 1880 (854)

D-453 8 82 (2083) 80 (2032) 164 (4166) 171-1/2 (4356) 2250 (1023)

Guide Specifications

32

GUIDE SPECIFICATIONS

1.0 GENERAL

1.1 SummaryThese specifications describe requirements for a Mis-sion Critical Cooling system. The system shall be designed to control temperature and humidity condi-tions in rooms containing electronic equipment, with good insulation and vapor barrier. The manufacturer shall design and furnish all equipment to be fully compatible with heat dissipation requirements of the room.

1.2 Design RequirementsThe Mission Critical Cooling system shall be a Lie-bert self-contained, factory-assembled unit with downflow air delivery. The system shall have a net total cooling capacity of ____ kW (BTUH) with a net sensible cooling capacity of ____ kW (BTUH) based on an entering air temperature of ____ °F (°C) dry bulb and ____ °F (°C) wet bulb. The unit is to be supplied with ____ volt ____ ph ____ Hz electrical service. Net capacities shall include losses due to fan motor heat.

1.3 SubmittalsSubmittals shall be provided after the agreement of the proposal and shall include: Single-Line Dia-grams; Dimensional, Electrical and Capacity Data; Piping and Electrical Connection Drawings.

2.0 PRODUCT

2.1 FrameThe frame shall be MIG welded, formed sheet metal. It shall be protected against corrosion using the auto-phoretic coating process. The frame shall be capable of being separated into three parts in the field to accommodate rigging through small spaces.

2.1.1 Downflow Air SupplyThe supply air shall exit from the bottom of the unit, with the air scrolled towards the front of the unit.

2.1.2 Downflow Air ReturnThe return air shall enter the unit from the top.

2.1.3 Exterior PanelsThe exterior panels shall be insulated with a mini-mum 1 in. (25mm), 1.5 lb. (0.68 kg) density fiber insulation. The main front panel shall have captive 1/4 turn fasteners. The main unit color shall be ______.

2.1.3.1 Double-Skin Panels (Optional)The exterior panels shall be internally lined with 20 gauge sheetmetal, sandwiching the insulation between the panels, for easy cleaning.

2.2 Filters, Downflow UnitThe filter chamber shall be located within the cabi-net, and filters shall be removable from the top of the unit. Filters shall be arranged in a V-bank configura-tion to minimize air pressure drop.

2.2.1 Filters, 4"Filters shall be deep pleated 4" filters with an ASHRAE 52.2 MERV8 rating (45% ASHRAE 52.1) or ASHRAE 52.2 MERV11 rating (60-65% ASHRAE 52.1).

2.2.1 Filters, 2" Pre-Filter With 2" FilterFilters shall be 2" ASHRAE 52.2 MERV7 (40% ASHRAE 52.1) pre-filter, with 2" ASHRAE 52.2 MERV11 (60-65% ASHRAE 52.1) efficiency filter.

2.2.2 Extra Filter Set____ extra set(s) of filters shall be provided per system.

2.3 Blower SectionThe blower section shall be designed for ___ CFM (CMH) at an external static pressure of ___ in. wg. (Pa). The fans shall be the centrifugal type, double width double inlet and shall be statically and dynam-ically balanced as a completed assembly to a maxi-mum vibration level of two mils in any plane. The shaft shall be heavy duty steel with self-aligning, per-manently sealed, pillow block bearings with a mini-mum L3 life of 200,000 hours. The fans shall draw air through the A-frame coil to ensure even air distribu-tion and maximum coil performance. A static regain duct shall be factory-installed to the bottom of the blower.

2.3.1 MotorThe fan motor shall be ____ hp (kW) at 1750 RPM @60hz (1450 RPM @50hz), mounted to an automatic, spring-tensioning base. The motor shall be removable from the front of the cabinet.

2.3.1.1 Premium Efficiency MotorThe fan motor shall be Open Drip-Proof, Premium efficiency and shall meet NEMA Premium standard. Motor efficiency shall be ____%.

2.3.1.1 TEFC Motor (Optional)The motor shall be Totally Enclosed Fan Cooled for protection in harsh environments.

2.3.2 Drive PackageThe motor sheave and fan pulley shall be double-width fixed pitch. Two belts, sized for 200% of the fan motor horsepower shall be provided with the drive package. An auto-tension system shall provide con-stant tension on the belts. Belts, shaft, blower bear-ings, sheave and pulley shall be warranted for five years (parts only).


33

2.4 HumidifierA humidifier shall be factory-installed inside the unit. Bypass air slots shall be included to enable moisture to be absorbed into the air stream. The humidifier capacity shall be ____lb./hr (kg/hr). The humidifier shall be removable from the front of the cabinet.

2.4.1 Infrared HumidifierThe humidifier shall be of the infrared type consist-ing of high intensity quartz lamps mounted above and out of the water supply. The humidifier pan shall be stainless steel and arranged to be removable with-out disconnecting high voltage electrical connections. The complete humidifier section shall be pre-piped, ready for field connection to water supply. The humidifier shall be equipped with an automatic water supply system and shall have an adjustable water-overfeed to prevent mineral precipitation. A high-water detector shall shut down the humidifier to prevent overflowing. A factory-provided air-gap shall prevent backflow of the humidifier supply water.

2.4.1 Steam Generating Canister HumidifierA canister-type steam canister shall be factory-installed in the cooling unit and shall be controlled by the microprocessor control system. It shall be com-plete with disposable canister, all supply and drain valves, steam distributor and electronic controls. The need to change canister shall be indicated on the microprocessor control panel. The humidifier shall be designed to operate with water conductivity from 200-500 micromhos. An air-gap within the humidifier assembly shall prevent backflow of the humidifier supply water.

2.5 ReheatThe environmental control unit shall include a fac-tory-installed reheat to control temperature during dehumidification.

2.5.1 3-Stage Electric ReheatThe electric reheat coils shall be low watt density, 304/304 stainless steel fin tubular construction, pro-tected by thermal safety switches, shall be ____ kW (____ BTUH) controlled in three stages. The reheat elements shall be removable from the front of the cabinet.

2.5.1 SCR Electric ReheatThe electric reheat coils shall be low watt density, 304/304 stainless steel fin tubular construction, pro-tected by thermal safety switches, ____ kW (____ BTUH) controlled by multiple pulses to achieve tight temperature control. The reheat elements shall be removable from the front of the cabinet.

2.5.1 Hot Water ReheatThe hot water reheat coil shall have copper tubes and aluminum fins with a capacity of ____ BTUH (kW) when supplied with ____ °F (°C) entering water tem-perature at ____ GPM (l/s) flow rate. Maximum pres-sure drop shall be ____ psi (kPa). The hot water reheat control system shall be factory pre-piped with a two-way modulating control valve and cleanable Y-strainer.

2.6 Dual Refrigeration SystemEach unit shall include two (2) independent refriger-ation circuits and shall include hot gas mufflers (semi-hermetic compressors units only), liquid line filter driers, refrigerant sight glass with moisture indicator, externally equalized expansion valves and liquid line solenoid valves. Compressors shall be located outside the airstream and shall be removable and serviceable from the front of the unit.

2.6.1 Semi-Hermetic Compressor With Four-Step Unloaders Control

The compressor shall be semi-hermetic with a suction gas cooled motor, vibration isolators, thermal over-loads, oil sight glass, automatic reset high pressure switch with control lockout after three failures, pump-down low pressure transducer, suction line strainer, service valves, reversible oil pumps for forced feed lubrication, a maximum operating speed of 1750 RPM. The system shall include cylinder unloaders on the semi-hermetic compressors. The unloaders shall be activated by solenoid valves which are controlled from the microprocessor control. In response to the return air temperature, the micropro-cessor control shall activate the unloader solenoids and the liquid line solenoids such that four stages of refrigeration cooling are obtained. The stages shall be: 1) one compressor, partially loaded, 2) two com-pressors partially loaded, 3) one compressor partially loaded, one compressor fully loaded, 4) two compres-sors fully loaded. On a call for dehumidification, the microprocessor control shall insure that at least one compressor is on full for proper humidity control.

2.6.1 Digital Scroll CompressorsThe compressor shall be scroll-type with a variable capacity operation capability. Compressor solenoid valve shall unload the compressor and allow for vari-able capacity operation. The compressor shall be suc-tion gas cooled motor, vibration isolators, thermal overloads, automatic reset high pressure switch with lockout after three failures, rotalock service valves, pump down low pressure transducer, suction line strainer, and a maximum operating speed of 3500 RPM. Consult factory for 575V availability.

2.6.1.1 Crankcase Heaters (Optional)The compressors shall include crankcase heaters, powered from the indoor unit electric panel.


34

2.6.2 Evaporator CoilThe evaporator coil shall be A-frame design with off-set orientation and have ____sq. ft. (m2) face area, three rows deep. It shall be constructed of rifled cop-per tubes and aluminum fins and have a maximum face velocity of ____ ft. per minute (m/s) at ____ CFM (CMH). A stainless steel condensate drain pan shall be provided.

2.6.2.1 Polymeric Coating (Optional)The coil shall be coated with a high performance poly-meric coating process to provide corrosion resistance within 2 to 12 pH range.

2.6.3 R-22 RefrigerantThe system shall be designed for use with R-22 refrigerant.

2.6.3 R-407C RefrigerantThe system shall be designed for use with R-407C refrigerant, which meets the EPA clean air act for phase-out of HCFC refrigerants.

2.7 iCOM� Microprocessor Control With Small Graphic Display

The iCOM unit control shall be factory-set for Intelli-gent Control which uses �fuzzy logic� and �expert sys-tems� methods. Proportional and Tunable PID shall also be user selectable options. Internal unit compo-nent control shall include the following:

Compressor Short Cycle Control - Prevents compressor short-cycling and needless compres-sor wear.System Auto Restart - The auto restart fea-ture will automatically restart the system after a power failure. Time delay is programmable.Sequential Load Activation - On initial star-tup or restart after power failure, each opera-tional load is sequenced with a minimum of one second delay to minimize total inrush current.Hot Water/Econ-O-Coil Flush Cycles - Hot water reheat coils and Econ-O-Coils are periodically flushed to prevent a buildup of contaminants.Predictive Humidity Control - calculates the moisture content in the room and prevents unnecessary humidification and dehumidifica-tion cycles by responding to changes in dew point temperature.

The iCOM control shall be compatible with all Lie-bert remote monitoring and control devices. Options are available for BMS interface via MODbus, Jbus, BACNet, Profibus and SNMP.The iCOM control processor shall be microprocessor based with a 128x64 dot matrix graphic front monitor display and control keys for user inputs mounted in an ergonomic, aesthetically pleasing housing. The display & housing shall be viewable while the unit

panels are open or closed. The controls shall be menu driven. The display shall be organized into three main sections: User Menus, Service Menus and Advanced Menus. The system shall display user menus for: active alarms, event log, graphic data, unit view/status overview (including the monitoring of room conditions, operational status in % of each function, date and time), total run hours, various sen-sors, display setup and service contacts. A password shall be required to make system changes within the service menus. Service menus shall include: set-points, standby settings (lead/lag), timers/sleep mode, alarm setup, sensor calibration, maintenance/wellness settings, options setup, system/network setup, auxiliary boards and diagnostics/service mode. A password shall be required to access the advanced menus which include the factory settings and pass-word menus.

The User Menus Shall be Defined as Follows:Active Alarms: Unit memory shall hold the 200 most recent alarms with time and date stamp for each alarm.Event Log: Unit memory shall hold the 400 most recent events with id number, time and date stamp for each event.Graphic Data View: Eight graphic records shall be available: return air temperature, return air humid-ity, supply air temperature, outdoor temperature and four custom graphs.Unit View - Status Overview: Simple or Graphical �Unit View� summary displays shall include temper-ature and humidity values, active functions (and per-cent of operation) and any alarms of the host unit.Total Run Hours: Menu shall display accumulative component operating hours for major components including compressors, Econ-O-Coil (FC), fan motor, humidifier and reheat.Various Sensors: Menu shall allow setup and dis-play of optional custom sensors. The control shall include four customer accessible analog inputs for sensors provided by others. The analog inputs shall accept a 4 to 20 mA signal. The user shall be able to change the input to 0 to 5VDC or 0 to 10VDC if desired. The gains for each analog input shall be pro-grammable from the front display. The analog inputs shall be able to be monitored from the front display.Display Setup: Customer shall pre-select the desired grouping of display languages at the time of the order from the following choices:

Group 1: English, French, Italian, Spanish, German

Group 2: English, Russian, GreekGroup 3: English, Japanese, Chinese, Arabic

Service Contacts: Menu shall allow display of local service contact name and phone number.


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The Service Menus Shall be Defined as Follows:Setpoints: Menu shall allow setpoints within the fol-lowing ranges:

� Temperature Setpoint 65-85ºF (18-29ºC)*� Temperature Sensitivity +1-10ºF (0.6-5.6ºC)� Humidity Setpoint 20-80% RH*� Humidity Sensitivity 1-30% RH� High Temperature Alarm 35-90ºF (2-32ºC)� Low Temperature Alarm 35-90ºF (2-32ºC)� High Humidity Alarm 15-85% RH� Low Humidity Alarm 15-85% RH* The microprocessor may be set within these ranges, however, the unit may not be able to con-trol to extreme combinations of temperature and humidity.

Standby Settings/Lead-Lag: Menu shall allow planned rotation or emergency rotation of operating and standby units.Timers/Sleep Mode: Menu shall allow various cus-tomer settings for turning on/off unit.Alarm Setup: Menu shall allow customer settings for alarm notification (audible/local/remote). The fol-lowing alarms shall be available:

� High Temperature� Low Temperature� High Humidity� Low Humidity� Compressor Overload (Optional)� Main Fan Overload (Optional)� Humidifier Problem� High Head Pressure� Change Filter� Fan Failure� Low Suction Pressure� Unit Off

Audible Alarm: The audible alarm shall annunciate any alarm that is enabled by the operator.Common Alarm: A programmable common alarm shall be provided to interface user selected alarms with a remote alarm device.Remote Monitoring: All alarms shall be communi-cated to the Liebert monitoring system with the fol-lowing information: Date and time of occurrence, unit number and present temperature and humidity.Sensor Calibration: Menu shall allow unit sensors to be calibrated with external sensors.Maintenance/Wellness Settings: Menu shall allow reporting of potential component problems before they occur.Options Setup: Menu shall provide operation set-tings for the installed components.System/Network Setup: Menu shall allow Unit-to-Unit (U2U) communication and setup for teamwork modes of operation (up to 32 units).

Teamwork Modes of Operation: Saves energy by preventing operation of units in opposite modes mul-tiple units.Auxiliary Boards: Menu shall allow setup of optional expansion boards.Diagnostics/Service Mode: The iCOM control shall be provided with self-diagnostics to aid in trouble-shooting. The microcontroller board shall be diag-nosed and reported as pass/not pass. Control inputs shall be indicated as on or off at the front display. Control outputs shall be able to be turned on or off from the front display without using jumpers or a service terminal. Each control output shall be indi-cated by an LED on a circuit board.

Advanced MenusFactory Settings: Configuration settings shall be factory-set based on the pre-defined component oper-ation.Change Passwords: Menu shall allow new pass-words to be set or changed.

2.7.1 iCOM Microprocessor Control With Large Graphic Display (Optional)

The iCOM unit control with large graphic display shall include all of the features as the iCOM with small graphic display, except that it includes a larger graphical display and shall include the additional features of: �System View�, Spare Parts List, Unit Diary.The iCOM control processor shall be microprocessor based with a 320x240 dot matrix graphic front moni-tor display panel and control keys for user inputs mounted in an ergonomic, aesthetically pleasing housing.System View - Status Overview: �System View� shall display a summary of operation for the total number of operating units within a Unit-to-Unit (U2U) configuration.Spare Parts List: Menu shall include a list of criti-cal spare parts, their quantity and part numbers.Unit Diary: Menu shall include a free field area within the unit memory where unit history may be stored for reference.

2.7.2 iCOM Wall Mount Large Graphic Display (Optional)

The iCOM Large Graphic Display Kit shall include an ergonomic, aesthetically pleasing housing, a 320x240 dot matrix graphic display and a 120V power supply. The Wall Mount Large Graphic Dis-play shall be used to allow remote location of a �Sys-tem View� display and all features of the Large Graphic User, Service and Advanced menus for use with Liebert iCOM controlled products connected for Unit-to-Unit (U2U) communications.


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2.8 Dual-Cooling SourceThe dual-cooling source system shall consist of an air- or water-cooled compressorized system with the addition of a chilled water coil (Econ-O-Coil), a modu-lating control valve and a comparative temperature sensor. The system shall be able to function either as a modulating chilled water system or as a compres-sorized system, or a combination of both. The pri-mary cooling mode shall be chilled water. Switchover between the two cooling modes shall be performed automatically by the microprocessor control. Four (4) pipes shall be included on water/glycol systems: Econ-O-Coil supply, Econ-O-Coil return, condenser supply and condenser return.

2.8.1 Dual-Cooling Source Control ValveThe water circuit shall include a three-way modulat-ing valve. The microprocessor positions the valve in response to room conditions. Cooling capacity will be controlled by bypassing chilled water around the coil. The modulating valve travel for dehumidification shall be proportional.

2.8.2 Cu-Ni Coil (Optional)A 70/30 Cu-Ni Econ-O-Coil shall be provided for Dual-Cooling units that are applied to a cooling tower loop or other open water system. This option is required on open cooling tower applications.

2.8.3 Polymeric Coating on Econ-O-Coil and DX Coil (Optional)

The coil shall be coated with a high performance poly-meric coating process to provide corrosion resistance within 2 to 12 pH range.

2.9 Miscellaneous Options2.9.1 Non-Locking Disconnect Switch

(Optional)The manual disconnect switch shall be mounted in the high voltage section of the electrical panel. The switch shall be accessible with the door closed.

2.9.1 Locking Disconnect Switch (Optional)The manual disconnect switch shall be mounted in the high voltage section of the electrical panel. The switch shall be accessible from the outside of the unit with the door closed and prevent access to the high voltage electrical components until switched to the �OFF� position.

2.9.2 High Temperature Sensor (Optional)The firestat shall be factory-installed in the unit and shall be factory-set to 125ºF (52ºC). It shall immedi-ately shut down the environmental control system when activated. The sensor shall be mounted with the sensing element in the return air.

2.9.3 Smoke Sensor (Optional)The smoke sensor shall immediately shut down the environmental control system and activate the alarm system when activated. The smoke sensor shall be mounted in the electrical panel with the sensing ele-ment in the return air compartment. The smoke sen-sor is not intended to function as or replace any room smoke detection system that may be required by local or national codes. The smoke sensor shall include a supervision contact closure.

2.9.4 Condensate Pump, Dual Float (Optional)The condensate pump shall have a minimum capac-ity of 145 GPH (548 l/h) at 20 ft. (58 kPa) head. It shall be complete with integral dual-float switches, pump-and-motor assembly and reservoir. The sec-ondary float shall send a signal to the local alarm and shut down the unit upon high water condition.

2.9.5 Low Voltage Terminal Package (Optional)

Factory-installed and wired terminals shall be provided for customer connection to lock out the reheat and humidifier upon contact closure. Two (2) extra N/O common alarm contacts shall be provided. Two (2) extra remote shutdown terminals shall be provided.

2.9.6 Remote Humidifier Contact (Optional)A pair of N/O contacts shall be provided for connec-tion to a remote humidifier.

2.9.7 Main Fan Overload (Optional)A pair of N/O contacts shall be factory-installed and wired to indicate Main Fan Overload.

2.9.8 Compressor Overload (Optional)A pair of N/O contacts shall be factory-installed and wired to each compressor to indicate Compressor Overload.

2.10 Air-Cooled SystemsThe indoor evaporator unit shall include refrigerant piping, with a factory holding charge of nitrogen. The hot-gas and liquid lines shall be spun shut and shall include a factory-installed Schrader valve. Field relief of the Schrader valve shall indicate a leak-free system.

2.10.1 Air-Cooled CondenserThe Liebert manufactured outdoor air-cooled con-denser shall be the low profile, multiple direct drive, propeller fan type. The condenser shall balance the heat rejection of the compressor at ____ °F (°C) ambi-ent. The condenser shall be constructed of aluminum and contain a copper tube, aluminum fin coil arranged for (horizontal) (vertical) air discharge.


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2.10.1.1 Fan Speed ControlThe winter control system for the air-cooled con-denser shall be Liebert Fan Speed Control. The vari-able speed motor shall operate from 0 to 230 volts single phase, 10 to 1050 RPM. It shall be designed with ball bearings, permanent lubrication, internal overload protection, 40°C rise at full speed, 65°C rise at 10 RPM. The control system shall be complete with transducers, thermostats and electrical control cir-cuit, factory prepackaged in the integral condenser control box. The transducer shall automatically sense the highest head pressure of either operating com-pressor and control the variable speed fan on the air-cooled condenser to properly maintain the head pres-sure. The fan speed control system shall provide posi-tive startup and operation in ambient temperature as low as -20°F (-28.9°C). The air-cooled condenser shall have a ____ volt, ____ ph ____ Hz power supply.

2.10.1.1 Lee-Temp SystemThe winter control system for the air-cooled con-denser shall be Lee-Temp. The Lee-Temp system shall allow startup and positive head pressure con-trol with ambient temperatures as low as -30°F (-34.4°C). The Lee-Temp package shall include the following components for each refrigeration circuit: insulated receiver, pressure relief valve, head pres-sure three-way control valve and rotalock valve for isolating the refrigerant charge. The Lee-Temp receiver shall be factory-insulated and mounted ready for the field connection to the air-cooled con-denser. The Lee-Temp heater shall require a sepa-rate power supply of ____ volt, single phase.

2.10.2 Quiet-Line Condenser (Optional)Fan motors shall be 12-pole, 570 RPM, equipped with rain shields and permanently sealed ball bearings. Motors shall include built-in overload protection. Motors shall be rigidly mounted on die-formed galva-nized steel supports. Disconnect switch shall be a standard feature.

2.10.3 Condenser Disconnect Switch (Optional)

A disconnect switch shall be factory-mounted and wired to the condenser control panel, accessible from the exterior (standard on Quiet-Line models).

2.10 Water/Glycol Systems2.10.1 Paradenser� CondenserThe water-cooled condensers for each circuit shall be cleanable, shell-and-tube, counter flow type. The heads shall be removable to allow for cleaning of the water tubes. Condensers shall be rated for a maxi-mum refrigerant pressure of 400 psi at 200°F (2758 kPa at 93.3°C). The condenser shall be capable of operating with R-22 or R-407C refrigerant. The unit shall require ____ GPM (l/m) of ____ °F (°C) water and have a maximum pressure drop of ____ psi (kPa).

2.10.2 Water/Glycol Regulating Valve, 2-Way With Bypass

The condenser shall be pre-piped with a two-way reg-ulating valve which is head pressure actuated. A gate-valve shall bypass the regulating valve.

2.10.2 Water/Glycol Regulating Valve, 3-WayThe condenser shall be pre-piped with a three-way regulating valve which is head pressure actuated.

2.10.3 Pressure Rating, 150 psi (1034 kPa)The condenser water circuit shall be designed for a pressure of 150 psi (1034 kPa)

2.10.3 Pressure Rating, 350 psi (2413 kPa)The condenser water circuit shall be designed for a pressure of 350 psi (2413 kPa)

2.10.4 GLYCOOL Systems2.10.4.1 GLYCOOL CoilThe GLYCOOL (Econ-O-Coil) shall be constructed of copper tubes and aluminum fins. The coil shall be A-frame or V-frame in order to minimize air pressure drop, and shall be nested with the DX coil. The Econ-O-Coil shall be upstream of the DX coil to enable pre-cooling of the air.The Econ-O-Coil shall have a net Sensible Cooling Capacity of ____ BTUH (kW) with 45°F (7.2°C) enter-ing glycol solution temperature. The system shall require ____ GPM (l/s) and the total unit pressure drop shall not exceed ____ feet of water (kPa), when in the Econ-O-Coil mode of operation.

2.10.4.2 GLYCOOL Three-Way Control ValveThe GLYCOOL coil shall be equipped with a fully proportional 3-way control valve. This motorized con-trol valve shall control the amount of flow to the GLYCOOL (Econ-O-Coil) coil to control room temper-ature and relative humidity.

2.10.4.3 High Pressure System, 350 psi (2413 kPa)

The GLYCOOL system shall be designed for a pres-sure of 350 psi (2413 kPa).

2.10.4.3 Cu-Ni Econ-O-CoilA 70/30 Cu-Ni Econ-O-Coil shall be provided for when the Econ-O-Coil is cooling tower loop or other open water system. This option is required on open cooling tower applications.


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2.11 DrycoolerThe drycooler shall be the low profile, slow speed, multiple direct drive, propeller fan type. The dry-cooler shall be constructed of aluminum and contain a copper tube aluminum fin coil with an integral elec-tric control panel and disconnect switch. The dry-cooler shall be designed for ____ °F (°C) ambient.

2.11.1 Pump PackageThis system shall be provided with a centrifugal pump mounted in a weatherproof and vented enclo-sure. The pump shall be rated for ____ GPM (l/m) at ____ ft. of head (kPa) and operate on ____ volt, 3-phase, ____ Hz.

2.11.1 Dual Pump PackageThe dual pump package shall include pumps, enclo-sure, field mounted flow switch and a separate fac-tory-wired control box (including a lead/ lag switch for the pumps). The standby pump shall automati-cally start upon failure of the lead pump. Each pump shall be rated for ____ GPM (l/s) at ____ feet of head (kPa).

2.12 Liqui-tect SensorsProvide ____ (quantity) solid state water sensors under the raised floor.

2.13 Floor StandThe floor stand shall be constructed of a welded steel frame. The floor stand shall have adjustable legs with vibration isolation pads. The floor stand shall be ____ inches (mm) high.

2.13.1 Seismic Rated Floor Stand (Optional)The floor stand shall be seismic rated and shall be bolted to the unit frame.

2.13.2 Floor Stand Turning Vane (Optional)A turning vane shall be supplied with the floor stand and shall be designed for the specified floor stand height.

2.14 Plenum (Optional)The air plenum shall be constructed of 20 gauge steel, powder coated to match unit color. The plenum shall be ___" high.

2.14.1 Top Return Plenum (Downflow)The plenum shall be open at the top and shall be attached to the top of the unit. Front panel shall be removal to allow access to filter section.

3.0 EXECUTION

3.1 Installation of Precision Air Conditioning Units

3.1.1 GeneralInstall precision air conditioning units in accordance with manufacturer�s installation instructions. Install units plumb and level, firmly anchored in locations indicated, and maintain manufacturer�s recom-mended clearances.

3.1.2 Electrical WiringInstall and connect electrical devices furnished by manufacturer but not specified to be factory-mounted. Furnish copy of manufacturer�s electrical connection diagram submittal to electrical contractor.

3.1.3 Piping ConnectionsInstall and connect devices furnished by manufac-turer but not specified to be factory-mounted. Fur-nish copy of manufacturer�s piping connection diagram submittal to piping contractor.

3.1.4 Field Quality ControlStart up cooling units in accordance with manufac-turer�s startup instructions. Test controls and demon-strate compliance with requirements. These specifications describe requirements for a computer room environmental control system. The system shall be designed to maintain temperature and humidity conditions in the rooms containing electronic equip-ment.The manufacturer shall design and furnish all equip-ment to be fully compatible with heat dissipation requirements.

The Company Behind the ProductsWith over a million installations around the globe,Liebert is the world leader in computer protectionsystems. Since its founding in 1965, Liebert hasdeveloped a complete range of support andprotection systems for sensitive electronics:

� Environmental systems�close-control airconditioning from 1 to 60 tons

� Power conditioning and UPS with powerranges from 300 VA to more than 1000 kVA

� Integrated systems that provide bothenvironmental and power protection in asingle, flexible package

� Monitoring and control�from systems of anysize or location, on-site or remote

� Service and support through more than 100service centers around the world and a 24/7Customer Response Center

While every precaution has been taken to ensure theaccuracy and completeness of this literature, LiebertCorporation assumes no responsibility and disclaims allliability for damages resulting from use of this informationor for any errors or omissions.

© 2005 Liebert CorporationAll rights reserved throughout the world. Specificationssubject to change without notice.

® Liebert and the Liebert logo are registered trademarksof Liebert Corporation. All names referred to aretrademarks or registered trademarks of their respectiveowners.

SL-18810A (10/05) Rev. 4

Technical Support/ServiceWeb Site

www.liebert.comMonitoring

[email protected]

Outside the US: 614-841-6755Single-Phase UPS

[email protected]

Outside the US: 614-841-6755Three-Phase UPS

[email protected]

Environmental Systems800-543-2778

Outside the United States614-888-0246

LocationsUnited States

1050 Dearborn DriveP.O. Box 29186

Columbus, OH 43229Italy

Via Leonardo Da Vinci 8Zona Industriale Tognana

35028 Piove Di Sacco (PD)+39 049 9719 111

Fax: +39 049 5841 257Asia

7/F, Dah Sing Financial Centre108 Gloucester Road, Wanchai

Hong Kong852 25722201

Fax: 852 28029250

PRECISION COOLING

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