Table of Contents
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WARNING:
This appliance is
equipped for (Natural and Propane)
gas. Field conversion is not permitted
other than between natural or
propane gases.
WARNING: IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED
EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY
DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.
-- Do not store or use gasoline or other flammable vapors and liquids in vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor's phone. Follow the
gas supplier's instructions.
If you cannot reach your gas supplier, call the fire department.
-- Installation and service must be performed by a qualified installer, service
agency or the gas supplier.
This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is
installed. Provisions for adequate combustion and ventilation air must be provided.
Refer to Air For Combustion and Ventilation section on page 6 of this manual.
INSTALLER: DO NOT DISCARD THIS MANUAL – LEAVE FOR HOMEOWNER'S
FUTURE REFERENCE.
This appliance may be installed in an aftermarket, permanently located manufactured
(mobile) home, where not prohibited by local codes. This appliance is for use with
the type of gas indicated on the rating plate only. This appliance is not convertible for
use with other gases.
Questions about installation, operation, or troubleshooting? Before returning to your retailer,
call customer service department toll-free at (877)886-5989.
CAUTION - FOR YOUR SAFETY
Vent-Free Gas Wall Heater
Model # MD300HGA
PC-ML062-03D-0904
Blue Flame
MD300TGA
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Summary of Contents for Procom MD300HGA
- Page 1 Vent-Free Gas Wall Heater Blue Flame Model # MD300HGA MD300TGA WARNING: This appliance is equipped for (Natural and Propane) gas. Field conversion is not permitted other than between natural or propane gases. CAUTION - FOR YOUR SAFETY WARNING: IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.
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Page 2: Table Of Contents
IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, and carbon monoxide poisoning. PRODUCT SPECIFICATIONS MD300HGA MD300TGA MODEL Gas Type... -
Page 3: Important Safety Information
IMPORTANT SAFETY INFORMATION IMPORTANT SAFETY INFORMATION IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning. -
Page 4: Product Features
6. If heater shuts off, do not relight until you have provided fresh, outside air. If heater keeps shutting off, have it serviced. Do not run heater: • Where flammable liquids or vapors are used or stored. • Under dusty conditions. 8. -
Page 5: Preparing For Installation
State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts. Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit. In the State of Massachusetts, unvented propane or natural gas-fired space heaters shall be prohibited in bedrooms and bathrooms. -
Page 6: Air For Combustion & Ventilation
AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provi sions are provided for adequate combustion and ventilation air. Read the following instructions to ensure proper fresh air for this and other fuel-burning appliances in your home. Providing Adequate Ventilation This heater shall not be installed in a room or space unless the required volume of indoor combustion air is provided by the method described in the NATIONAL FUEL GAS CODE, ANSI Z223.1/NFPA 54, the INTERNATIONAL FUEL... - Page 7 DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.
- Page 8 WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54.
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Page 9: Installation
INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source. - Page 10 LOCATING HEATER This heater is designed to be mounted on a wall. For convenience and efficiency, install heater: 1) where there is easy access for operation, inspection, and service. 2) In the coldest part of room. FASTENING HEATER TO WALL Mounting Bracket The mounting bracket is located on back panel of heater (see Figure 4).
- Page 11 Attaching to Wall Anchor Method For attaching mounting bracket to hollow walls (wall areas between studs) or solid walls (concrete or masonry): Drill holes at marked locations using 5/16-inch drill bit. For solid walls (concrete or masonry), drill at least 1 inch deep. Fold wall anchor as shown in Figure 7.
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Page 12: Connecting To Gas Supply
CONNECTING TO GAS SUPPLY WARNING: A qualified service technician must connect heater to gas supply. Follow all local codes. WARNING: This appliance requires a 3/8-inch NPT (National Pipe Thread) inlet connection to the pressure regulator. WARNING: Never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas. WARNING: Do not over-tighten gas connections. - Page 13 Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves. The installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water.
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Page 14: Checking Gas Connections
Figure 13 Figure 14 Figure 15 CHECKING GAS CONNECTIONS WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. If bubbles form, there is a leak. -
Page 15: Operation
Pressure Testing Heater Gas Connections Open equipment shutoff valve (see Figure 16). Open gas supply tank valve. Make sure control knob of heater is in the OFF position. Remove front panel. Check all joints from equipment shutoff valve to control valve (see Figure 17). Apply mixture of liquid soap and water to gas joints. -
Page 16: Lighting Instructions
LIGHTING INSTRUCTIONS FOR MD300HGA STOP! Read the safety information on other side of this plate and on front and back of on Warning plate. Make sure manual shutoff valve is fully open. Turn control knob clockwise to the OFF position. - Page 17 LIGHTING INSTRUCTIONS FOR MD300TGA Unscrew ignitor cap and install a AAA battery with the + pointing out. Replace cap. STOP! Read the safety information on the side of the heater. Make sure equipment shutoff valve is fully open. Turn control knob clockwise to the OFF position.
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Page 18: Inspecting Burner
INSPECTING BURNER Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 21 shows a correct pilot flame pattern. Figure 22 shows a incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool, which shuts the heater off. If pilot flame pattern is incorrect: •... -
Page 19: Care And Maintenance
CARE AND MAINTENANCE WARNING: Turn off heater and let cool before servicing 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 technician. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc. -
Page 20: Troubleshooting
TROUBLESHOOTING WARNING: If you smell gas: • Shut off gas supply. • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. •... - Page 21 TROUBLESHOOTING POSSIBLE CAUSE POSSIBLE CAUSE PROBLEM Burner orifice is clogged. Clean burner orifice (see Care and Maintenance, page 19) or replace Burner(s) does not light burner orifice. after ODS/pilot is lit. Burner orifice diameter is too small. Contact customer service. Inlet gas pressure is too low.
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Page 22: Replacement Parts
PROBLEM REMEDY POSSIBLE CAUSE 1. Ventilate room. Stop using odor causing 1. Heater is burning vapors from paint, products while heater is running. hair spray, glues, etc. See Heater produces IMPORTANT statement page 20. unwanted odors. Locate and correct all leaks (see 2. - Page 23 ILLUSTRATED PARTS MD300HGA...
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Page 24: Parts List (Md300Hga)
PARTS LIST (MD300HGA) This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 22 of this manual. KEY NO. PART NO. DESCRIPTION MB10057D Cabinet Assembly MB11052D Reflector Unite ML087-01... - Page 25 ILLUSTRATED PARTS MD300TGA...
- Page 26 PARTS LIST (MD300TGA) This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 22 of this manual. KEY NO. PART NO. DESCRIPTION MB10054D Cabinet Assembly MB11052D Reflector Unite ML087-01 Upper Glass Retainer ML086-01 Glass...
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