CRR-20 & CRR-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
Condenser fan will stop if condenser head pressure decreases to 1100 +/- 50 kPa, 11.00 +/- 0.5 bar, 160 +/- 7 psig.
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
Summary of Contents for CRR-20
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