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

TABLE OF CONTENTS
Descriptions and Specifications ......................................................................................................................................1
Installation Restrictions....................................................................................................................................................2
Cautions ..........................................................................................................................................................................2
Safety Inspection of a Previously Used Appliance ......................................................................................................2-3
IN-FORCER Terminology ................................................................................................................................................3
Intake Elbow Termination Clearances .............................................................................................................................3
Combustion CFM Necessary For Appliance(s) ...............................................................................................................4
Determining IN-FORCER CFM capabilities ....................................................................................................................4
Installation
Tools Required ...............................................................................................................................................................4
Cutting PVC Opening through Wall..............................................................................................................................4-5
IN-FORCER Installation ...............................................................................................................................................5-6
Installation of Pipe .......................................................................................................................................................6-7
Confined Space or Closet Installations ...........................................................................................................................7
Installation of Intake Elbow..............................................................................................................................................7
Electrical Wiring
Wiring IN-FORCER Models PAI-1O & PAI-2O ............................................................................................8-10
Wiring IN-FORCER Models PAI-1G & PAI-2G ..........................................................................................10-13
Wiring IN-FORCER PAI-G Series With a 24V Furnace/Boiler and Millivolt Water Heater .............................11
Wiring IN-FORCER Models PAI-1G & PAI-2G With Single Zone Gas or Oil Terminal Strip/Fan Center .......13
System Operation Check Out........................................................................................................................................13
Maintenance ..................................................................................................................................................................13
Trouble Shooting
IN-FORCER Models PAI-1O & PAI-2O...........................................................................................................14
IN-FORCER Models PAI-1G & PAI-2G......................................................................................................15-16
How to Obtain Service & Warranty ..........................................................................................................................16-17
Replacement Parts List & Isometric IN-FORCER Diagram ..........................................................................................17
PVC Hole Template .......................................................................................................................................................18
IN-FORCER TM is a trademark of Tjernlund Products, Inc. for IN-FORCER air intakes.
DESCRIPTION
The IN-FORCER combustion fans are mechanical air intake fans designed and Listed for use with atmospheric or induced combus-
tion natural draft gas or oil heating equipment. The IN-FORCER functions as a source of combustion air. Outside intake air is blend-
ed with a larger quantity of indoor air so the resulting tempered discharge does not reflect outside temperature extremes. The
IN-FORCER assures intake air is supplied by monitoring the airflow with a Fan Proving Switch. The main burner will be interrupted if
a malfunction occurs.
APPLICATION TABLE
Verify that the total BTU/hr input of the heating appliance(s) fall within the ratings listed below. Check CFM necessary for the BTU/hr
input of the heating appliance(s) on table 1, page 4. CFM delivered depends upon the total length of pipe used. Check CFM capacity
with different inlet and outlet pipe lengths on page 4, Table 2 PAI-1 Series or Table 3 PAI-2 Series.
SPECIFICATIONS
Motor: 115/1/60, 1600 RPM, 80 watts, 1.0 FLA
Fan Prover: Non-adjustable, contacts rated for 3 Amps Inductive @ 120VAC
Relay: 24/115V Switching Relay, PAI-1G & PAI-2G
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