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P/N 0518258_C
P/N 0518258_D
REFRIGERATION THERMOSTAT
The bulb for the optional refrigeration thermo-
stat is located approximately 12 in. (305 mm)
above the coil and 6 ft (1829 mm) from the
left-hand end (facing front) of the merchandis-
er. The optional refrigeration thermostat is
located 5 ft (1524 mm) from the left-hand end,
just past the wireway. On wide island models,
the thermostat body is located on the serial
plate side (front) of the merchandiser.
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 case.
DEFROST SEQUENCES
These merchandisers require defrost cycles for
proper operation. Refer to the data sheets for
application data.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
The Time Clock initiates defrost. The evaporator
fans continue to circulate air across the evapo-
rator 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
2. Single compressor units without pump-
Time Termination
Should be used for the following types of
instal lations:
1. Parallel systems with thermostat and liquid
2. Single compressor units with pump-down.
To use time termination, simply do not wire
the termination thermostat.
Standard Defrost
Termination Thermostat
solenoids
down cycle.
solenoid.
Medium Temperature
2-3
2-3
Optional Refrigeration
Thermostat Bulb
Optional
Refrigeration
Thermostat
Produce & Bakery
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