Page 18 / IM 447
Front View - Right Hand Piping
Back Panel With Outside Air Damper Inlet
Gasket
Outside Air
Floor
Manual Damper
Control Shown
Brick Vent
Exterior
Wall
Filter
Room Air
Caution:
1. To prevent infiltration of ambient
conditions, it is the responsibility of
the contractor to assure that factory
installed gasketing matches up with
the wall opening, or that additional
material is used to assure a positive seal.
2. Cold Weather Operation: Console
water source heat pumps may expe-
rience erratic operation during cold
ambient conditions with the outside
air damper in the open position. See
“Operating Limits,” page 8, for
guidelines.
3. Note: Illustrations not to scale
Rear Inlet
Typical Installation
Should a major problem develop, refer to the following
information for possible cause and corrective steps.
Neither fan nor compressor runs:
1. The fuse may be blown or the circuit breaker is open.
Check electrical circuits and motor windings for
shorts or grounds. Investigate for possible overloading.
Replace fuse or reset circuit breakers after fault is
corrected.
2. Wires may be loose or broken. Replace or tighten.
3. Supply voltage may be too low. Check it with the
power company.
4. Control system may be faulty. Check thermostat for
correct wiring and check 24 volt transformer for burnout.
Fan operates but compressor does not:
1. Check capacitor.
2. Wires may be loose or broken. Replace or tighten.
3. The high pressure may have tripped due to:
a. Fouled or plugged condenser.
b. Lack of or no condenser water.
c. Too warm condenser water.
d. Not enough airflow over the coil due to dirty filters.
e. Coil or fan motor failure.
4. The low temperature switch may have tripped due to:
a. Fouled or plugged condenser.
b. Lack of or no condenser water.
c. Too cold condenser water.
d. Not enough airflow over the coil due to dirty filters.
e. Coil or fan motor failure.
5. Check thermostat setting, calibration and wiring.
6. The compressor overload protection is open. If the
compressor dome is extremely hot, the overload will
not reset until cooled down. If the overload is external,
replace it. If the overload is internal, replace the
compressor.
7. The internal winding of the compressor motor may be
grounded to the compressor shell. If so, replace the
compressor.
8. The compressor winding may be open. Check continuity
with ohmmeter. If the winding is open, replace the
compressor.
Field Installed Optional Outside Air Damper
Unit Size A B C C
1
DE
004 - 012 46 (1168) 45 (1143) 21.09 (536) 11.38 (289) 12.53 (318) 2.25 (57)
013 - 019 54 (1372) 53 (1346) 22.25 (565) 22.25 (565) 12.53 (318) 2.25 (57)
10.75"
(273mm)
25.00"
(635mm)
A
C
1
D
B
.50" (13mm)
Gasket
.62"
(16mm)
.50" (13mm)
2.25" (57mm) Opening
Gasket
Gasket
.62"
(16mm)
.50" (13mm)
A
D
C
B
Front View - Left Hand Piping
Back Panel With Outside Air Damper Inlet
Troubleshooting
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