This switch also prevents operation when the propane tank level is low which can result in gas with a high concentration of impurities, additives,
and residues that have settled to the bottom of the tank. Operation under these conditions can cause harm to the heat exchanger system. This
normally open switch closes when gas is supplied to gas valve under normal operating pressure. The closed switch completes control circuit.
Should an interruption or reduction in gas supply occur, the gas pressure at switch drops below low gas pressure switch setting, and switch opens.
Any interruption in control circuit (in which low gas pressure switch is wired) quickly closes gas valve and stops gas flow to burners.
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 12—LABEL APPLICATION
See Fig. 26 for label location.
1. Fill in Conversion Responsibility Label (327697-205) and apply to blower access panel as shown. Date, name, and address of organization
making this conversion are required.
2. Attach Conversion Rating Plate Label (327697-201 Rev. B, See Fig. 25.) on blower shelf as shown.
Fig. 26—Condensing Furnace Label Location
A01025
FURNACE CONVERSION
RATING PLATE
FURNACE
RATING
PLATE
RESPONSIBILITY
LABEL
GAS CONTROL
CONVERSION
LABEL
BURNER
ENCLOSURE
GAS VALVE
CONTROL
Fig. 27—Multipoise, Hot-Surface Ignition, Fixed-Speed,
Condensing Furnace Component Location (Upflow Orientaion Shown)
A01081
BURNER
ENCLOSURE
MANIFOLD
CONTROL
BURNER
ENCLOSURE
REFERENCE
PRESSURE TUBE
GAS VALVE
—28—
Содержание KGANP3001ALL
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