Installation Instructions and Owner’s Manual
Unvented LP-Gas Vent Free Room Heaters
3
9. Operating heater above elevations of 4,500 feet
could cause pilot/ODS to shutdown heater.
10. Always run heater with control knob in a locked
position. Never set control knob between locked
positions. Poor combustion and higher levels of
carbon monoxide may result if control knob is left
between locked positions.
DANGER
: Carbon monoxide poisoning may lead to
death.
Carbon Monoxide Poisoning:
Early signs of carbon monoxide poisoning resemble
the flu, with headaches, dizziness, or nausea. If you
have these signs, the heater may not be working
properly. Get fresh air at once! Have heater serviced.
Some people are more affected by carbon monoxide
than others. These include pregnant women, persons
with heart or lung disease or anemia, those under the
influence of alcohol, and those at high altitudes.
Propane/LP Gas:
Propane/LP gas is odorless. An odor making agent is
added to propane/LP gas. The odor helps you detect
a Propane/LP gas leak. However the odor added to
propane/LP gas may be present even though no odor
exists. Make certain you read and understand all
warnings. Keep this manual for reference. It is your
guide to safe and proper operation of this heater.
PRECAUTIONS:
1. A 20,000 BTU or 30,000 BTU unit may not
be installed in a bedroom or bathroom, or any
place where a strong wind would shut down the
appliance.
2. This heater needs outside ventilation air to run
properly. The Oxygen Depletion Sensor (ODS)
safety shutoff system shuts down the heater if not
enough fresh air is available. See
Fresh Air for
Combustion and Ventilation
, pages 5 through 6.
3. Keep all air openings in heater clear, free of debris
or any blockage. This will insure that enough air for
proper combustion enters the heater.
4. If heater shuts off, do not relight until you provide
fresh, outside air. If heater keeps shutting off, it
requires servicing.
5. Turn off and unplug heater and let cool before
servicing. Only a qualified service person should
service and repair heater.
6. Do not run heater:
•
Where flammable liquids or vapors are used or
stored
•
During dusty conditions.
7. Before using furniture polish, wax, carpet cleaner
or similar products, turn heater off. If heated the
vapors from these products may create a white
powder residue within burner box or on adjacent
walls or furniture.
8. Do not use heater if any part has been underwater.
Immediately call a qualified service technician to
inspect the room heater and to replace any part of
the control system and any gas control which has
been underwater.
SPECIFICATIONS
**Operating heater above elevations of 4,500 feet could cause pilot/ODS to shutdown heater
.**
- MHVFR20TB LP
- MHVFR20T LP
- MHVFR30TB LP
- MHVFR30T LP
- MHVFB20TBLP
- MHVFB20T LP
- MHVFB30TB LP
- MHVFB30T LP
BTU (Available)
20,000
30,000
20,000
30,000
Type of Gas
LP-Gas Only
LP-Gas Only
LP-Gas Only
LP-Gas Only
Ignition
Battery ignitor (1-AA) Battery ignitor (1-AA) Battery ignitor (1-AA) Battery ignitor (1-AA)
Pressure Regulator Setting
10 Inches of Water
10 Inches of Water
10 Inches of Water
10 Inches of Water
Inlet Gas Pressure (Maximum)
14 Inches of Water
14 Inches of Water
14 Inches of Water
14 Inches of Water
Inlet Gas Pressure (Minimum)
11 Inches of Water
11 Inches of Water
11 Inches of Water
11 Inches of Water
Electrical Rating /Blower
120V, 60Hz , 1
120V, 60Hz , 1
120V, 60Hz , 1
120V, 60Hz , 1
Burners / Orifice nozzles
3
4
1
1
Thermostatic Control
Yes
Yes
Yes
Yes
Clearances: inches (mm)
Top
36” (915cm)
36” (915cm)
36” (915cm)
36” (915cm)
Sides
10” (254cm)
10” (254cm)
10” (254cm)
10” (254cm)
Floor (min to top of carpet) 3” (76cm)
3” (76cm)
3” (76cm)
3” (76cm)
Fabric / flammable objects 36” (915cm)
36” (915cm)
36” (915cm)
36” (915cm)
