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10. Turn off furnace power supply.
11. Remove manometer and on some models remove
pressure tap fitting.
12. On some models, apply pipe dope sparingly to the end of
1/8−in. (3 mm) pipe plug and install in the manifold
pressure tap opening. Or, on some models, tighten set
screw on manifold tower pressure tap with a 3/32−in. hex
wrench. See Figure 8.
13. Turn furnace gas−valve switch to ON position.
Figure 12
Conversion Rating Plate Label
LABEL APPLICATION
1. Fill in Conversion Responsibility Label 339851−205 and
apply over Propane Conversion Responsibility Label Date,
name, and address of organization making this conversion
are required. See Figure 26.
2. Apply Conversion Rating Plate Label 339851−201 over
Propane Conversion Rating Plate Label. See Figure 12.
3. Apply Gas Control Conversion Label over Propane label
on gas valve: For single−stage gas valve apply label
339851−202 to gas valve. (DO NOT use 339851−203,
14. Turn on furnace power supply.
15. Set room thermostat to call for heat.
16. Check pressure tap plug for gas leaks when main burners
ignite.
17. Check for correct burner flame.
18. After making the required manifold pressure adjustments,
check and adjust the furnace temperature rise per the
furnace installation instructions.
which is similar) Check for correct normal operating
sequence of the ignition system as described in furnace
Service and Technical Support Manual.
CHECKOUT
1. Observe unit operation through two complete heating
cycles.
2. See Sequence of Operation in furnace Installation,
Start−Up, and Operating Instructions.
3. Set room thermostat to desired temperature.
9
A13070
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