To insure proper operation of the heater, it is extremely
important to ensure that any extra length of wiring umbilical is
folded out of the airstream as shown in Figure 3, and that any
There must be an unobstructed air path in the space between
the heater box and any control box installed. Refer to Figure 4
that shows the specified area cross-hatched.
Failure to heed this instruction may result in heater limit
switch nuisance tripping due to insufficient air flow across the
limit switch.
low voltage wiring and condensate hose (if provided) be
routed to avoid contact with the heater fins.
FIGURE 3
The Model 47233 heater is equipped with a lockout circuit
which requires the user to turn off the wall thermostat or
manual system selector switch, wait 10 minutes, then restore
function.
Models 47330 and 47333 heater limit switch trip will shut
down the heater. It will resume the heating function when the
temperature in this area is below the setting on the limit
switch.
FIGURE 4
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