When normal gas pressure is restored, the system must be electrically reset to re-establish normal heating operation.
Before leaving installation, observe unit operation through 2 complete heating cycles. During this time, turn gas supply to gas valve off just long
enough to completely extinguish burner flame, then instantly restore full gas supply. To ensure proper low gas pressure switch operation, observe
that there is no gas supply to burners until after hot surface igniter begins glowing.
PROCEDURE 9—LABEL APPLICATION
1. Fill in Conversion Responsibility Label (327697-205) and apply to Blower Access Door of furnace as shown. (See Fig. 11.) Date, name,
and address of organization making this conversion are required.
2. Attach Conversion Rating Plate Label (327697-204 Rev. B, Fig. 10.) to Outer Door of furnace.
3. Apply Gas Control Conversion Label to gas valve:
a. For single-stage gas valve apply label 327697-203 to gas valve. (Do not use 327697-202, which is similar)
b. For two-stage gas valve that was converted by replacing the regulator springs (Fig. 6C) apply label 327697-203.
c. For two-stage gas valve that was adjusted (Fig. 6D) apply label 327697-202.
4. Check for correct normal operating sequence of the ignition system as described in furnace Installation, Start-Up, and Operating
Instructions.
5. Replace control access door.
Fig. 11—Label Application
A02203
Factory
Clearance
Label
Apply Conversion
Responsibility Label
on exterior of door
Factory Information
Label
Blower Door
Rating Plate on
exterior of door
Existing Warning Label
Outer
door
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