Tjernlund PAI-1 & 2O Combustion Air In-Forcer 8504038 Rev A 05/01 - Manual (Page 13)

NOTES: When the IN-FORCER is interlocked with the gas valve of the appliance, wire all other furnace/boiler controls as normally
done when conventional venting before continuing. Disconnect power from the appliance before attempting to interlock IN-FORCER.
Step 1: Cut wire that is factory installed to the TH or MV (HOT) terminal of gas valve.
Step 2: Connect YELLOW wire from IN-FORCER control cable to TH or MV (HOT) of gas valve.
Step 3: Connect BLUE wire from IN-FORCER control cable to the TH or MV (HOT) terminal of internal controls.
Step 4: Connect the RED wire from IN-FORCER control cable to the TR or MV/PV (COM) terminal on gas valve.
Important: DO NOT remove the factory pre-wired connection on this terminal.
Step 5: Wire WHK-I Gas Pressure Switch in parallel across PAI-G Series relay contacts.
Step 6: Wire Spill Switches in series with ECO or 950-0470 thermocouple junction adapter if no ECO is present.
NOTES: The IN-FORCER is always interlocked with the gas valve of the appliance. Wire all other furnace/boiler controls as normally
done when conventional venting before continuing. Disconnect power from the appliance before attempting to interlock IN-FORCER.
The instructions below assume that the IN-FORCER and Power Venter are installed at the same time.
Step 1: Remove wire connected to the MV(HOT) terminal on appliance electronic ignition module.
Step 2: Reconnect wire removed in step 1 to the YELLOW wire from IN-FORCER control cable.
Step 3: Connect the ORANGE wire from Power Venter electrical box and the RED from the IN-FORCER control cable to the MV/PV
(COM) terminal on appliance electronic ignition module.
Important: DO NOT remove the factory pre-wired connection on this terminal.
Step 4: Connect the two BLUE wires in Power Venter electrical box to the MV(HOT) terminal on electronic ignition module.
Step 5: Connect the YELLOW wire from the Power Venter electrical box to the BLUE wire from IN-FORCER control cable.
NOTES: The IN-FORCER is always interlocked with the gas valve of the appliance. Wire all other furnace/boiler controls as normally
done when conventional venting before continuing. Disconnect power from the appliance before attempting to interlock IN-FORCER.
These instructions assume that the IN-FORCER and Power Venter are installed at the same time. See wiring steps on page 13.
12
IN-FORCER MODELS PAI-1G & PAI-2G CONNECTED TO A 24V FURNACE OR BOILER
WITH STANDING PILOT AND TJERNLUND HSUL OR GPAK POWER VENTER
IN-FORCER MODELS PAI-1G & PAI-2G CONNECTED TO A 24V FURNACE OR BOILER
WITH ELECTRONIC IGNITION AND TJERNLUND HSUL OR GPAK POWER VENTER