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

Fan Proving Switch: Do not exceed 3 FLA or 1/10 HP through proving switch contacts. You may add one of relays listed on bottom
of page 1 to isolate the proving switch contacts if the load being switched exceeds the maximum rating.
High Limit: Manual reset N/C contacts, open at 160° + 8° F, 14 FLA @120 VAC. The high limit switch will deactivate the IN-FORCER
if temperature adjacent to high limit reaches the set point. Reset button is located on inside of cabinet on electrical box side of IN-FORCER.
GENERAL INFORMATION
1. These units have been factory tested and rated in accordance with AMCA Standard 210, test code for air moving devices.
2. Each IN-FORCER is electrically factory line tested before shipment.
3. After opening carton, inspect thoroughly for hidden damage. Fan wheel should rotate freely. If any damage is found, notify freight
carrier and your distributor immediately and file a concealed damage claim.
INSTALLATION RESTRICTIONS
1. Observe proper location of Intake Hood as described on page 5.
2. If IN-FORCER outlet is mounted lower than seven feet above the utility room floor, a minimum 2 foot section of pipe must be
installed on the discharge side of the IN-FORCER to prevent accidental contact with operating blower wheel.
Improper installation, adjustment, alterations, service or maintenance can cause injury or property damage. Refer to this manual. For
assistance or additional information consult a qualified installer, service agency or the equipment supplier.
CAUTIONS
1. Failure to install, maintain and/or operate the IN-FORCER in accordance with manufacturer’s instructions may result in conditions
that can produce bodily injury and property damage.
NOTE: Cold climate installations must adhere to warning #4 and #7.
2. The IN-FORCER must be installed by a qualified installer (an individual properly licensed and/or trained) in accordance with all
local codes or in their absence, in accordance with the appropriate National Fire Protection Association #31, #54, #211 and the
National Electric Code.
3. The IN-FORCER motor shaft must be mounted horizontally, with discharge also facing horizontally to prevent motor bearing wear
and ensure proper operation of the Fan Proving Switch.
4. Do not discharge onto water pipes or other equipment which may be affected by temperature extremes.
5. Disconnect power supply when making wire connections and servicing the IN-FORCER. Failure to do so may result in personal
injury and/or equipment damage.
6. Make certain the power source is adequate for the IN-FORCER requirements. Do not add the IN-FORCER to a circuit where the
total electrical load is unknown.
7. To prevent potentially damaging low mechanical room temperatures, it is recommended that a low temperature limit be installed.
8. WARNING: To reduce the risk of fire or electric shock, do not use this fan with any solid state speed control device.
9. WARNING: To reduce the risk of electric shock and injury to persons, do not use in a window.
10. WARNING: To reduce the risk of fire, electric shock, or injury to persons, observe the following:
a.) Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and
standards, including fire-rated construction.
b.) Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment
to prevent back drafting. Follow the heating equipment manufacturer’s guideline and safety standards such as those
published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration, and Air
Conditioning Engineers (ASHRAE), and the local code authorities.
c.) When cutting or drilling into wall or ceiling, do not damage electrical wiring or other hidden utilities.
The IN-FORCER CFM outputs will assure that adequate combustion air is supplied if the appliance is functioning properly. However,
in the event that there is an appliance malfunction, such as a cracked heat exchanger or clogged flue, there is no guarantee that addi-
tional combustion air will eliminate carbon monoxide spillage into the equipment room.
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