TM 9-2540-207-14&P
5.2.1
Vent Fan Assembly (Continued)
Installation
Note: The Combustion Air duct should remain with the Vent Fan Assembly as it is
removed. Loctite 770 primer and Loctite 401 are used to seal the Combustion Air
Duct to the Vent Fan Assembly.
1.
Clean the Top Housing Combustion Air Inlet by removing any old sealant, and then coat with Silicone RTV to
provide a seal for the Combustion Air Duct.
Note: The ends of the Combustion Air Duct must be sealed to the Vent Fan
Assembly and to the Top Housing.
2.
Place Vent Fan Assembly onto the Burner Housing Assembly ensuring that the motor frame sits correctly over
the Burner Housing, and that the Combustion Air Duct is aligned with the Top Housing air inlet. DO NOT use
excessive force.
3.
When pushing the Vent Fan Assembly onto the Burner Housing, check that the gasket around the Burner
Housing stays in position, and that the wires of the Wiring Harness are not trapped. Check that the Combustion
Air Duct is properly mated with the Top Housing air inlet.
4.
Tighten the bolt using a 5/16" socket. DO NOT OVER TIGHTEN. Check that the Vent Fan rotates freely.
5.
Attach Power Wiring Harness connector J1 to the Electronic Programmed Controller board. Ensure that the
locking tabs are properly engaged.
6.
Attach Power Wiring Harness connector J6 to the Vent Fan Driver. Ensure that the locking tabs are properly
engaged.
!CAUTION!
Ensure the edge of the screwdriver blade does NOT nick the Logic connector wires
while screwing down the J1 connector.
7.
Attach Logic Wiring Harness connector J1 to the Electronic Programmed Controller board. Ensure that the pins
are clean and aligned properly, and tighten the jack screws evenly using a 1/8" flat blade screwdriver until the
surfaces mate. DO NOT OVER TIGHTEN the jack screws.
8.
Install Bottom Shell (ref. 5.1.3)
9.
Install Top Shell (ref. 5.1.2)
5-12
