Pilot Flame Characteristics - Empire Heating Systems DVC-35-1SPP Installation Instructions And Owner's Manual

Fan type direct vent wall furnace

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Installation instructions and owner's manual (24 pages)

Table Of Contents

Table of Contents

The correct pilot flame (Figure 11) will be blue, extending past

the thermocouple. The flame will surround the thermocouple just

below the tip.

Natural gas pilots require adjusting when the inlet gas pressure is

above 5" w.c. (1.245kPa). Remove the pilot cover screw on the

control valve (Figure 3), and turn the adjustment screw clockwise

to reduce flame. Replace pilot cover screw to eliminate gas

leaking at that control valve opening.

LP gas (propane) will not require adjustment.

After use, cleaning may be required for the proper flame.

IP-Model Pilot

This heater is using a Honeywell "Smart Valve" system for

intermittent pilot ignition.

On a call for heat by the thermostat this control turns on a 24 volt

mini hot surface ignitor which lights a pilot that in turn lights the

main burner. The gas valve used in this system is a step opening

which opens at a lower pressure for ignition and then steps to a full

inlet pressure of 4" H

O pressure on Natural gas and 10" H

pressure on LP gas.

Pilot Flame Adjustment

The pilot flame should envelop 3/8 to 1/2 inch (10 to 13mm) of

the tip of the flame rod. See Figure 11.

To adjust:

1. Remove the pilot adjustment cover screw.

2. Turn the inner adjustment screw clockwise

decrease or counterclockwise

flame. Pilot adjustment is shipped at full flow rate. Turn the

inner adjustment screw clockwise

is too high.

3. Replace the cover screw after the adjustment to prevent gas

leakage.

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