Dettson Chinook C105-M-V, Installation Instructions And Homeowner'S Manual

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Figure 7 – Horizontal left position
gas valve.
3. Using a pair of tweezers or needle nose pliers,
place the jumper (supplied) on the receptacle lo-
cated beneath the label that was removed in step
2. Use care to make sure that both prongs of re-
ceptacle engage the jumper.
4. Place the «LP» label (supplied with the kit) on the
gas valve over the opening to the jumper.
5. Attach the “WARNING” label (supplied with this kit)
to the gas valve where it can readily be seen.
6. Move the switch located on gas valve back to the
“ON” position.
7. Unscrew the manifold.
8. Replace the natural gas burner orifices with the LP
orifice (# 56) supplied with the kit.
9. Replace the manifold and make sure it’s properly
aligned with the burners.
10. Make sure the gas valve outlet pressure (measured
on the outlet pressure tap) is compliant with the out-
let pressure. Outlet pressure is specified on the
nameplate of the furnace.
6.3 GAS PIPE GROMMET
For direct vent applications, the hole for the gas pipe on
the cabinet must be sealed to prevent air leakage. Install
the grommet in the hole, then insert the gas pipe.
6.4 SETTING GAS PRESSURE
Elevations under 4500 ft doesn’t require that the furnace
input rating be adjusted. Follow those steps to properly
adjust the servo gas valve :
1. With the gas to the unit shut off at the manual gas
valve, remove the outlet pressure tap plug in the
gas valve.
2. Connect the pressure hose from a manometer to
this pressure tap. Turn on the manual gas valve.
3. Make sure the unit is operating at its maximum ca-
pacity and note the pressure. Should be 3.0” w.c.
+/- 0.3 for Natural gas and 8.6” w.c. +/- 0.5 for LP
gas.
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