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19
DEFROST
AND
TEMP CONTROL
This case is equipped with either
Electric or Hot Gas defrost at the owners
option. The sensor bulb and probe for electric
defrost termination control is located on the
top, center of the coil at the rear. The sensor
bulb for temperature control is located on the
right side of the evaporator behind the end
cover, as shown in illustration 1 below. The
discharge air probe is located behind a 3 1/2”
plug button on the top flue panel also shown in
illustration 1. The hot gas defrost termination
sensor bulb and probe are attached to the
dump line, as shown in diagram 2, which is in
PLENUM
COIL
DISCHARGE AIR PROBE LOCATION
(BEHIND 3 1/2” PLUG BUTTON IN
TOP FLUE).
HOT GAS DEFROST
TERMINATION CONTROL
SENSOR BULB AND PROBE
LOCATION.
the top, left hand side of the case.
The defrost termination control thermo-
stat and the temperature control thermostat
are both located in thermostat enclosures
behind the kickplate on the left hand side of the
case, as shown in diagram 3.
It is important to consult the control
setting guidelines shown on page 18 before
setting defrost times. Further adjustment may
• TEMPERATURE CONTROL SENSOR BULB LOCATION
(UNDER ACCESS HATCH ON EXITING AIR SIDE OF COIL).
1
2
MODEL
KRZH
3
THERMOSTAT
ENCLOSURE
• ELECTRIC DEFROST TERMINATION CONTROL SENSOR BULB LOCATION
• ELECTRIC DEFROST TERMINATION PROBE LOCATION