2-2
R
EFRIGERATION
/ E
LECTRICAL
REFRIGERATION THERMOSTAT
The bulb for the optional refrigeration thermostat
is located in the discharge air of the evaporator.
The optional refrigeration thermostat is located
5 ft (1524 mm) from the left-hand end, just past
the raceway, on the serial plate side (front) of the
merchandiser.
OPTIONAL DEFROST TERMINATION
THERMOSTAT
The optional disc type defrost termination
thermostat is not adjustable. This thermostat
is clamped to the suction line of the coil on
the left-hand end of the serial plate side (front)
of the merchandiser.
DEFROST SEQUENCES
These merchandisers require defrost cycles for
proper operation. Refer to the data sheets for
application data.
The Time Clock initiates defrost. The evaporator
fans continue to circulate air across the evapora-
tor coil, melting any frost build-up. Defrost can
be terminated by either time or temperature.
Time Termination (Standard)
Should be used for the following types of instal-
lations:
1. Parallel systems with thermostat and liquid
solenoid.
2. Single compressor units with pump-down.
Temperature Termination (Optional)
Temperature termination may be used for the
following types of installations:
1. Parallel systems with EPRs or suction stop
solenoids
2. Single compressor units without pump-down
cycle.
Offtime Defrost
Liquid Line
Suction Line
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
P/N 0446551_A
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