4
V. Principles of Operation
VI.
Specific Model Data
Mounting
ENCLOSURE
HEATED AIR IN
ENCLOSURE
COOLED AIR OUT
ELECTRICAL
HEATER
AMBIENT
AIR IN
AMBIENT
AIR OUT
AMBIENT
BLOWER
HEAT
EXCHANGER
ELEMENT
ENCLOSURE
BLOWER
The heater option includes the electrical heater, ambient blower,
bimetal thermostat, heater thermostat and limiter thermostat. All of the
thermostats are installed in the discharged enclosure air stream. When
the enclosure discharge air goes below 70°F, the ambient blower
thermostat shuts off the ambient blower. When the enclosure
discharge air goes above 85°F, the ambient blower thermostat turns
on the ambient blower.
When discharge enclosure air goes below 40°F, the heater
thermostat turns on the heater. When the discharge enclosure air
goes above 60°F, the heater thermostat shuts off the heater. See
wiring diagram on page 6.
1.
Loosen the two screws on the bottom of the unit.
2.
See Drawings and Dimensions for proper M/TAB orientation. Place the M/TAB flush against the
outside of the enclosure to locate cutouts and mounting holes.
3.
Mount the M/TAB to the outside of the cabinet using all the mounting hardware supplied by
Kooltronic (
1/4
-20 screws/nuts/washers). NOTE: Make sure the screws are inserted with heads
on the M/TAB side.
4.
Route the power cord through the bottom cut out in your cabinet. Mount the unit to the M/TAB
by sliding the slots on each side panel into the hooks on the M/TAB.
5.
Tighten the two screws on the bottom of the unit and seal against the enclosure.
The main component of the heat exchanger is the counterflow aluminum element through which the heat
transfer occurs.
Ambient blower draws ambient air from the bottom inlet through an aluminum mesh air filter, and the
element, and exhausts it through a discharge grill.
Cabinet blower draws cabinet air from the top inlet, blows it through the element and exhausts it through
the bottom discharge into the cabinet.
Kooltronic Heat Exchangers have been engineered to be installed easily. To avoid damaging your
Heat Exchanger, please read the following information before installation:
