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TABLE 19
REHEAT OPERATION
Thermostat Mode With 24V Humidistat
Humidity Demands Operation
24V Demand for Dehumidification only
S Compressor 1 reheat on
S Compressor 1 operates at 100%
S Reheat valve is energized
S Remaining compressors are off
S Blower and outdoor fans modulate to maintain indoor coil and
discharge air temperatures
24V Demand for Dehumidification only is still
present after Five Minutes
S Compressor 1 & 2 reheat on
S Compressor 1 operates at 100%
S Reheat valves are energized
S Remaining compressor(s) is/are off
S Blower and outdoor fans modulate to maintain indoor coil and dis
charge air temperatures
Thermostat Mode with Zone Relative Humidity (RH) Sensor
Zone humidity is greater than Setpoint +2%
S Compressor 1 reheat on
S Compressor 1 modulates to maintain zone RH
S Reheat valve is energized
S Remaining compressors are off
S Blower and outdoor fans modulate to maintain indoor coil and
discharge air temperatures
Zone humidity is greater than Setpoint +2%
OR
Zone humidity is greater than Setpoint for 5 min
utes
S Compressor 1 & 2 reheat on
S Compressor 1 modulates to maintain zone RH
S Reheat valves are energized
S Remaining compressor(s) is/are off
S Blower and outdoor fans modulate to maintain indoor coil and
discharge air temperatures
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