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 (20 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 leak-

ing 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 inter-

mittent 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

to decrease or counterclockwise

increase pilot ﬂame. Pilot adjustment is shipped at full ﬂow

rate. Turn the inner adjustment screw clockwise

if the inlet pressure is too high.

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

leakage.

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