15
Installation Instructions and Owner’s Manual
Unvented Natural Gas Vent Free Room Heaters
Burner does not light after ODS/pilot is lit 1. Burner orifice is clogged
2. Burner orifice diameter to small
3. Inlet gas pressure is too low
1. Clean burner orifice (see Cleaning and
Maintenance on pages 11 and 12), or
replace burner orifice
2. Replace burner orifice
3. Contact local gas company
Delayed ignition of burner
1. Manifold pressure is too low
2. Burner orifice is clogged
1. Contact local gas company
2. Clean burner orifice (see Cleaning and
Maintenance on pages 11 and 12), or
replace burner orifice
Burner backfiring during operation
1. Burner orifice is clogged or damaged
2. Burner damaged
3. Gas regulator defective
1. Clean burner orifice (see Cleaning and
Maintenance on pages 11 and 12), or
replace burner orifice
2. Replace burner
3. Replace gas regulator
Burner plaque(s) does not glow [Infrared
Only]
1. Plaque damaged
2. Control knob set between locked posi
-
tions.
3. Inlet gas pressure is too low
1. Replace burner
2. Turn control knob until it locks at de
-
sired setting.
3. Replace gas regulator
Slight smoke or odor during initial opera
-
tion
1. Residues from manufacturing process
1. Problem will stop after a few hours of
operation
Heater produces a whistling noise when
burner is lit
1. Turning control knob to HI position
when burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orifice.
1. Turn control knob to LO position and
let warm up for a minute.
2. Operate burner until air is removed
from line have gas line checked by lo
-
cal gas company.
3. Observe minimum installation clear
-
ances (see Figure 4 page 7)
4. Clean burner orifice (see Cleaning and
Maintenance on pages 11 and 12), or
replace burner orifice.
White powder residue forming within
burner box or on adjacent walls or furni
-
ture
1. When heated, vapors from furniture
polish, wax, carpet cleaners, etc., turn
into white powder residue
1. Turn heater off when using furniture
polish, wax, carpet cleaner or similar
products.
Heater produces unwanted odors.
1. Heater burning vapors from paint, hair
spray, glues, etc. See IMPORTANT
statement at top of page 14.
2. Gas leak. See WARNING statement at
top of page 14.
1. Ventilate room. Stop using odor-caus
-
ing products while heater is running.
2. Locate and correct all leaks (see
Checking Gas Connections, page 10)
Heater shuts off in use (ODS operates)
1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
1. Open window and/or door for
ventilation
2. Contact local gas company
3. Clean ODS/pilot (see Cleaning and
Maintenance, pages 11 and 12)
Gas odor even when control knob is in
OFF position
1. Gas leak. See WARNING statement at
top of page 14.
2. Control valve is defective
1. Locate and correct all leaks (see
Checking Gas Connections, page 10)
2. Replace control valve
Gas odor during combustion
1. Foreign matter between control valve
and burner
2. Gas leak. See WARNING statement at
top of page 14.
1. Take apart gas tubing and remove
foreign matter
2. Locate and correct all leaks (see
Checking Gas Connections, page 10)
Heater produces a clicking/ticking noise
just after burner is lit or shut off
1. Metal expanding while heating or con
-
tracting while cooling
1. This is common with most heaters. If
noise is excessive, contact qualified
service person
Moisture/condensation noticed on win
-
dows
1. Not enough combustion/ventilation air
1. Refer to Fresh Air for Combustion and
Ventilation page 3 through 5.
