ICP PGN324 Installation instructions manual - Caution
22
FIGURE 18
Burner Rack Removed
OUTDOOR FAN
UNIT OPERATION HAZARD
Failure to follow this caution may result in damage to
unit components.
Keep the condenser fan free from all obstructions to
ensure proper cooling operation. Never place articles
on top of the unit.
CAUTION
!
1. Remove 6 screws holding outdoor grille and motor to
top cover.
2. Turn motor/grille assembly upside down on top cover to
expose fan blade.
3. Inspect the fan blades for cracks or bends.
4. If fan needs to be removed, loosen setscrew and slide
fan off motor shaft.
5. When replacing fan blade, position blade so that the
hub is 1/8 in. away from the motor end (1/8 in. of motor
shaft will be visible) (See Fig. 11).
6. Ensure that setscrew engages the flat area on the
motor shaft when tightening.
7. Replace grille.
ELECTRICAL CONTROLS AND WIRING
Inspect and check the electrical controls and wiring
annually. Be sure to turn off the electrical power to the unit.
Remove access panel to locate all the electrical controls
and wiring. Check all electrical connections for tightness.
Tighten all screw connections. If any smoky or burned
connections are noticed, disassemble the connection,
clean all the parts, re--strip the wire end and reassemble the
connection properly and securely.
After inspecting the electrical controls and wiring, replace
all the panels. Start the unit, and observe at least one
complete cooling cycle to ensure proper operation. If
discrepancies are observed in operating cycle, or if a
suspected malfunction has occurred, check each electrical
component with the proper electrical instrumentation. Refer
to the unit wiring label when making these checks.
If no refrigerant leaks are found and low performance is
suspected, refer to Checking and Adjusting Refrigerant
Charge section.
INDOOR AIRFLOW
The heating and/or cooling airflow does not require
checking unless improper performance is suspected. If a
problem exists, be sure that all supply-- and return--air
grilles are open and free from obstructions, and that the air
filter is clean.
METERING DEVICES
Refrigerant metering device is a fixed orifice and is located
in the distributor assembly to the indoor coil.
LIQUID LINE STRAINER
The liquid line strainer (to protect metering device) is made
of wire mesh and is located in the liquid line on the inlet side
of the metering device.
TROUBLESHOOTING
Refer to the Troubleshooting Chart (Table 10--12) for
troubleshooting information.
START--UP CHECKLIST
Use the Start--Up Checklist at the back of this manual.
Table 6—
Filter Pressure Drop Table (in. wc)
FILTER SIZE
CFM
500
600
700
800
900
1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
20X20X1
0.05
0.07
0.08
0.1
0.12
0.13
0.14
0.15
—
—
—
—
—
—
—
—
—
—
—
20X24X1
—
—
—
—
0.09
0.1
0.11
0.13
0.14
0.15
0.16
—
—
—
—
—
—
—
—
24X30X1
—
—
—
—
—
—
—
0.07
0.08
0.09
0.1
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18