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P/N 0453523
REFRIGERATION THERMOSTAT
The bulb for the optional refrigeration thermostat
is located approximately 12 in. (305 mm) above
the coil and 6 ft (1829 mm) from the left-hand
end (facing front) of the merchandiser. The
optional refrigeration thermostat is located 5 ft
(1524 mm) from the left-hand end, just past the
raceway.
DEFROST TERMINATION THERMOSTAT
The standard disc type defrost termination
thermostat is not adjustable. This thermostat
is clamped to the suction line of the coil on
the left-hand (facing front) end of the
merchandiser.
DEFROST SEQUENCES
These merchandisers require defrost cycles
for proper operation. Refer to the data sheets
for application data.
Standard Defrost
Termination Thermostat
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
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 temperature or time.
Temperature Termination
Temperature termination should 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.
Time Termination
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.
To use time termination, simply do not wire the
termination thermostat.
Optional Refrigeration
Thermostat Bulb
Elite
Optional
Refrigeration
Thermostat
Medium Temperature
2-3
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