Tjernlund PAI-3,4,5,6,7 Commercial Combustion Air In-Forcer 8504036 Rev A 05/01 - Manual (Page 12)

SYSTEM OPERATION CHECK-OUT
1. Adjust thermostat or appliance to call for heat.
2. Verify that IN-FORCER operates first, prior to burner ignition.
Allow heating equipment and IN-FORCER to operate continuously while performing steps 3-6.
3. Close all interior doors, windows and openings of the mechanical room.
4. Turn on any equipment in the mechanical room that exhausts indoor air during its operation.
5. Allow IN-FORCER and equipment to operate for at least five minutes.
6. Place a smoke source a couple of inches from draft hood or draft diverter and verify that appliance is pulling in smoke, (See Diagram I).
If appliance is venting properly, smoke source will be pulled in. If smoke is not pulled in, a blocked flue or negative pressure exists. If
problem can’t be determined contact Tjernlund for further assistance.
MAINTENANCE
Disconnect power supply to the IN-FORCER when servicing. The IN-FORCER should be inspected every 6 months. Points of
inspection are:
Motor:
For optimum performance, oil motor annually with SAE 10 oil (Model PAI-3 has a permanently lubricated motor). Motor assembly may
be partially slid out of housing by removing screws located on the center of the top and bottom panels on the models PAI-3/4. The
models PAI-5/6/7 have two screws on the front panel under the outlet collar and four 1/4” motor mount bolts if motor removal is neces-
sary.
Wheel:
Wheel must be clean of any foreign material such as leaves, lint or other items. Remove all foreign material from
blower assembly before operation, (See Diagram J).
Intake Hood:
Intake Hood screen should be clear of any foreign material such as leaves, lint or other items. Remove Intake
Hood cover and check perforated air inlet screens for foreign material. Remove all foreign material from Intake Hood screens before
operation, (See Diagram K).
Aluminum Mesh Prefilter:
The prefilter and interior of the housing should be cleaned annually, or as needed in dirty atmospheres. The filter is accessed by
removing the rear access door on the models PAI-3/4, or by removing the filter rack panel on the models PAI- 5/6/7.
TROUBLE SHOOTING
The following guide is intended to be used if a problem occurs during the use of the IN-FORCER. At several steps throughout the
guide you will come in close contact with 115 Volts. Extreme caution must be exercised to prevent injury. If you are unable to
determine the defective part with the use of this guide, call your Tjernlund distributor or Tjernlund Products direct at 1-800-255-4208
for further assistance.
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DIAGRAM I
DIAGRAM K DIAGRAM J