Tjernlund PAI-3,4,5,6,7 Commercial Combustion Air In-Forcer 8504036 Rev A 05/01 - Manual (Page 2)

TABLE OF CONTENTS
Description and Specifications ....................................................................................................................................1, 2
Installation Restrictions....................................................................................................................................................2
Cautions ..........................................................................................................................................................................2
IN-FORCER Selection Table ...........................................................................................................................................3
Safety Inspection of a Previously Used Appliance..........................................................................................................4
Commercial IN-FORCER Terminology ............................................................................................................................4
Intake Hood Locations - Wall or Roof Mount ..................................................................................................................5
Installation
Tools Required ...............................................................................................................................................................5
Installation of Intake Hood
Roof Mount of Intake Hood...........................................................................................................................5, 6
Wall Mount of Intake Hood................................................................................................................................6
IN-FORCER Mounting.....................................................................................................................................................7
Electrical Wiring
IN-FORCER Internal Wiring Schematic ............................................................................................................8
IN-FORCER Fan Prover and Motor Isolation Relay Diagram ..........................................................................8
24 VAC Wiring with Single Appliance ...............................................................................................................9
115 VAC Wiring with Single Appliance..............................................................................................................9
Oil Wiring with Single Appliance .....................................................................................................................10
Oil & Gas Wiring with up to Four Appliances & the Optional MAC-4 .............................................................10
System Operation Check Out........................................................................................................................................11
Maintenance ..................................................................................................................................................................11
Trouble Shooting .........................................................................................................................................11, 12, 13, 14
How To Obtain Service, Warranty & Replacement Parts ........................................................................................14, 15
IN-FORCER Fan Curves...............................................................................................................................................15
IN-FORCER TM is a trademark of Tjernlund Products, Inc. for IN-FORCER air intakes.
DESCRIPTION
The IN-FORCER combustion air intake systems are designed and Listed for use with atmospheric or induced combustion gas and oil
heating equipment. The IN-FORCER functions as the source of combustion air, eliminating the need for louvered openings. The
IN-FORCER assures intake air is supplied by monitoring the air flow with a Fan Proving Switch. The main burner will be interrupted if
a malfunction occurs.
ICATIONS
DIMENSIONS & SPECIFICATIONS
PAI-3 Motor: 115/1/60, 3000 RPM, 95 watts, 1.26 FLA, Thermal Protection
PAI-4 Motor: 115/1/60, 3300 RPM, 166 watts, 1.51 FLA, Thermal Protection
PAI-5 Motor: 115/1/60, 1725 RPM, 1/4 HP, 5.4 Amps, Thermal Protection
PAI-6 Motor: 115/1/60, 1725 RPM, 1/3 HP, 5.8 Amps, Thermal Protection
PAI-7 Motor: 115/208/230/1/60, 1725 RPM, 1 HP, 12.6/6.3/6.2 Amps, Thermal Protection
24-Volt Control Circuits: All models require a relay to activate the IN-FORCER motor. Tjernlund P/N 950-1040 is applicable to all
models except the PAI-7. The PAI-7 requires P/N 950-1016.
115 Volt Control Circuits: IN-FORCERS may be directly wired into a heating appliance control circuit as long as the contacts of the
circuit can handle the additional load of the IN-FORCER motor. For installations that require a relay, Tjernlund P/N 950-0480 is applic-
able to all models except the PAI-7. The PAI-7 requires P/N 950-0483.
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INTAKE HOOD DIMENSIONS IN-FORCER POWERED INTAKE DIMENSIONS