Filter
Top Products
35NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting
The following graphic is an example of a two-Module System (with four compressors). The setpoint is
21.1°C (70°F) and the deadband is 2.2°C (4°F). Each compressor engages as the return air temperature
reaches its assigned segment of the deadband above the setpoint. When the return air temperature drops
back below the temperature assigned to a compressor, that compressor disengages.
Caution: If the deadband setting is too narrow, it will cause the System to engage the
compressors in response to a small temperature change. Since the compressors must run for a
minimum period to avoid damage, this could over-cool the room.
Caution: If the deadband setting is too wide, the System will not engage all of its cooling
capacity until the return air temperature is significantly above the setpoint.
21
°
°
(70 )
Return air temperature
21.6
°
°
(71 )
22.2
°)
°
(72
22.7
°)
°
(73
23.3
°)
°
(74
Compressor
# 1
Compressor
# 2
Compressor
# 3
Compressor
# 4
Cool Deadband Compressor Allocation
Two-Module System
na0437a