Mr. Heater MH25LP - Manual (Page 10)

E10 Installation instructions and Owner’s Manual Model # MH25NG/LP HS25NG/LP
MANUAL GAS
CONTROL
KNOB
PILOTSTAT
POWER UNIT
PRESSURE
REGULATOR
ADJUSTMENT
STANDARD
PRESSURE
REGULATOR
PILOT GAS OUTLET
(PRESSURE TAPPING
DIRECTLY BENEATH)
PILOT FLOW ADJUSTING SCREW
(BENEATH COVER SCREW)
WRENCH
BOSS
GAS IN-
LET
Figure 9. Gas Valve Components
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.
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.
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 mon-
oxide 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!
NOTE
Gasket binder material used in this heater assem-
bly 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.
FIGURE 8. THERMOSTAT CONTROLS