Emerson ITR Manuel D’Utilisation

System Data

Table 7

Liebert Challenger ITR water cooled data, 60 Hz (continued)

System Type

Self-Contained

Split Systems

Indoor Unit

BR 071WG

BR 060E

Infrared Humidifier - Standard

Capacity, lb/hr (kg/hr)

11 (5)

4.8

Steam Generating Humidifier - Optional

Capacity, lb/hr (kg/hr)

11 (5)

3.9

Filter Section - Efficiencies per ASHRAE 52.1 - Disposable Type
20% efficiencies available in 2" (51mm) - Standard, or optional 4" (102mm) depths; other optional 4" (102mm) efficiencies

are: 30%, 40-45%, 60-65%

Nominal Size, in. (mm)

28.5 x 29.5

(724 x 749)

28.5 x 29.5

(724 x 749)

Effective Surface Area, ft

)

24.1 (2.2)

Water Regulating Valve

Size, in.

Water Requirements (Coaxial Condenser)

MC_69W

THR - BTU/H (kW) @ 75°F (22.2°C), 50% RH

82,000 (24.0)

81100 (23.8)

65°F (18.3°C) EWT - 105°F (40.6°C) Cond Temp

Flow Rate, GPM (l/s)

5.4 (.34)

Pressure Drop, PSI (kPa)

0.9 (6.2)

1.2 (8.1)

75°F (23.9°C) EWT - 105°F (40.6°C) Cond Temp

Flow Rate, GPM (l/s)

7.7 (.49)

7.6 (.48)

Pressure Drop, PSI (kPa)

1.6 (11.0)

2.2 (15.2)

85°F (29.4°C) EWT - 115°F (46.1°C) Cond Temp

Flow Rate, GPM (l/s)

9.9 (.62)

9.7 (.61)

Pressure Drop, PSI (kPa)

2.5 (17.2)

3.5 (24.2)

Connection Sizes Challenger ITR Unit

Condenser Supply

1-1/8 OD Cu

Condenser Return

1-1/8 OD Cu

Liquid Line

1/2 OD Cu

Suction Line

1 1/8 CD Cu

Humidifier Supply Line

1/4 OD Cu

Condensate Drain Line

1/2 FPT

Connection Sizes Remote Condensing Unit

Condenser Supply

1-1/8 OD Cu

Condenser Return

1-1/8 OD Cu

Liquid Line

1/2 OD Cu

Suction Line

1-1/8 OD Cu

Self-contained unit pressure drops based on two-way valve with bypass. Split system unit pressure drops based on two-way or three-way
valve.