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CHAPTER III
HEATER OPERATING
INSTRUCTIONS
1. OPERATING SAFETY INSTRUCTIONS
WARNING: When used without fresh air, heater
may give off CARBON MONOXIDE, an odorless
poisonous gas. OPEN WINDOW AN INCH OR
TWO FOR FRESH AIR WHEN USING HEATER.
WARNING: This heater is equipped with a PILOT
LIGHT SAFETY SYSTEM. DO NOT TAMPER
WITH PILOT LIGHT SAFETY SYSTEM.
WARNING: If heater shuts off, do not relight until
you provide fresh air. Open door for 5 minutes. If
heater keeps shutting off, have it serviced. Keep
burner and control clean.
WARNING: CARBON MONOXIDE POISONING
MAY LEAD TO DEATH. Early signs of carbon
monoxide poisoning resemble the flu with
headache, dizziness and/or nausea. If you have
these signs, heater may not be working properly.
Get fresh air at once! Have heater serviced.
WARNING: DO NOT USE MATCH OR OTHER
FLAME FOR LEAK TESTING.
CAUTION: If the infra-red color of the grid becomes
dull when the building furnace is operating, consult
gas supplier on correct gas supply piping sizes.
CAUTION: This heater is for indoor installation
only!
MANUAL GAS
CONTROL
KNOB
WRENCH
BOSS
GAS IN-
Model # HS25NG/LP
LET
Figure 9. Gas Valve Components
Gasket binder material used in this heater assembly
will temporarily emit an odor and/or vapor. This
condition will clear up in approximately 20 minutes
and thereafter will not reoccur. Refer to Chapter 2 for
ventilation.
2. HEATER STARTUP
WARNING: During heater startup ensure that build-
ing is well ventilated.
A. Open the gas supply valve or valves.
B. Set the thermostat to the OFF position.
See Figure 8.
FIGURE 8. THERMOSTAT CONTROLS
C. If the manual gas control knob on the gas valve is
not in the OFF position, partially depress the knob
and rotate to the OFF position. See Figure 9.
PRESSURE
REGULATOR
ADJUSTMENT
PILOT FLOW ADJUSTING SCREW
PILOTSTAT
(BENEATH COVER SCREW)
POWER UNIT
Installation instructions and Owner's Manual
E10
NOTE
STANDARD
PRESSURE
REGULATOR
PILOT GAS OUTLET
(PRESSURE TAPPING
DIRECTLY BENEATH)
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