CSR-20 & CSR-40, September 1999
Electrical, Refrigeration and
µ
P-D Menu Flow Diagrams
Schematic Circuit Tracings
9-19
1
Typical model shown with three evaporator fans.
2
A complex algorithm will typically turn the condenser fan ON when the compressor discharge temperature is above
50 C (122 F) and increasing, or when the condenser temperature is above 35 C (95 F).
3
Dehumidify Mode is set to ON in the PROGRAM menu of the controller. When the unit is in High Dehumidify opera-
tion (5% or more above setpoint), the dehumidify valve closes (energizes) to reduce the size of the evaporator coil
used for cooling and the electric heaters are pulsed ON for a maximum of 15 seconds every 30 seconds.
Modulation Mode
1
— Chill Load (Setpoint at -9.9 C [14.1 F] or Above); Condenser Fan ON
2
; Economy Mode
OFF; Temperature In-range; Dehumidify ON with Humidity 5% or More Above Humidity Setpoint
3
