Main Burner Operation - Empire Comfort Systems VFH-33M-1 Installation Instructions And Owner's Manual

PILOT FLAME CHARACTERISTICS (continued)
Cleaning and Maintenance/Pilot
Oxygen Depletion Sensor Pilot (Figure 24)
When the pilot has a large yellow tip flame, clean the Oxygen
Depletion Sensor as follows:
1. Clean the ODS pilot by loosening nut B from the pilot
tubing. When this procedure is required, grasp nut A with
an open end wrench.
2. Blow air pressure through the holes indicated by the arrows.
This will blow out foreign materials such as dust, lint and
spider webs. Tighten nut B also by grasping nut A.
Warning:
Never use needles, wires, or similar cylindrical objects
to clean the pilot to avoid damaging the calibrated ruby
that controls the gas flow.
VFH-33M Main Burner Operation
The main burner operation is MANUAL. The owner must
manually place the main burner in operation. The owner will
either select one, two or three inputs to be in operation. Once
the owner has turned the main burner ON, it will continue to
operate until the owner manually turns the main burner OFF.
Description of Manual Gas Control Knob:
OFF is the OFF position.
PILOT is the PILOT position.
Position 1 The input will be 25,000 BTUH.
Position 2 The input will be 20,000 BTUH.
Position 3 The input will be 15,000 BTUH.
VFH-33R AND VFH-33T Main Burner Operation
The gas control modulates from a minimum input of 17,500
BTU/HR (LO setting) to a maximum input of 25,000 BTU/HR
(HI setting).
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MAIN BURNER OPERATION

Figure 24
VFH-33R Millivolt Control
The valve regulator controls the burner pressure which should be
checked at the pressure test point. Turn captured screw counter
clockwise 2 or 3 turns and then place tubing to pressure gauge
over test point (Use test point "A" closest to control knob). After
taking pressure reading, be sure and turn captured screw clock-
wise firmly to re-seal. Do not over torque. Check for gas leaks.
Cleaning and Maintenance / Main Burner
Warning: Turn off heater and let cool before cleaning.
Caution: You must keep control areas, burner and circulating air
passageways of heater clean. Inspect these areas of heater before
each use. Have heater inspected yearly by a qualified service
person. Heater may need more frequent cleaning due to excessive
lint from carpeting, bedding materials, etc.
Logs
Be careful cleaning and handling logs so as not to damage them.
If logs break or fall apart in handling, spray the broken pieces and
fibers with water, sweep up and discard.
VFH-33