Tjernlund PAI-1 & 2O Combustion Air In-Forcer 8504038 Rev A 05/01 - Manual (Page 14)

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Step 1: Remove wire connected to the TH(HOT) terminal on appliance gas valve.
Step 2: Reconnect wire removed in step 1 to the two BLUE wires in Power Venter.
Step 3: Connect the ORANGE wire from Power Venter electrical box and the RED form the IN-FORCER
control cable to the TR(COM) terminal on appliance gas valve.
Important: DO NOT remove the factory pre-wired connection on this terminal.
Step 4: Connect the YELLOW wire in Power Venter electrical box to the BLUE wire from IN-FORCER control cable.
Step 5: Connect the YELLOW wire from IN-FORCER control cable to the TH(HOT) terminal on appliance gas valve.
WIRING MODELS PAI-1G & PAI-2G WITH SINGLE ZONE GAS OR OIL FURNACE TERMINAL STRIP/FAN CENTER
Step 1: Remove T-Stat wire connected to W on furnace terminal strip/fan center and connect it to BLUE
wire of IN-FORCER control cable.
Step 2: Connect YELLOW wire from IN-FORCER control cable to W on furnace terminal strip/fan center
Step 3: Connect RED from IN-FORCER control cable to C/Common on furnace terminal strip/fan center.
SYSTEM OPERATION CHECK-0UT
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 doors and windows of the building. If heating equipment is installed in a utility room or closet, close the entrance
door to the room. Close fireplace dampers.
4. Turn on all equipment in the structure that exhausts indoor air during the operation, i.e. turn on clothes dryer, exhaust fans,
such as range hood, bathroom and exhaust whole house fans.
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 N).
If appliance is venting properly, smoke source will be pulled in. If smoke is not pulled in, a blocked flue or negative house pressure
exists. Call a heating professional to examine the problem.
MAINTENANCE
The IN-FORCER must be inspected every 3 to 6 months. Points of inspection are:
1. Motor: Motor must rotate freely. The fan motor is permanently sealed and requires no oiling.
2. Wheel: Wheel must be clean of any foreign substance like leaves, lint or other items. Remove all foreign material from
blower assembly before operation.
3. Intake Elbow: Intake elbow screen should be clear of any foreign substance like leaves, lint or other items. Check screen
every 3 to 6 months for foreign material. Remove all foreign material from intake system before operation.
The IN-FORCER now features easy pull down servicing for maintenance, see isometric diagram on bottom of page 17.
DIAGRAM N