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BLUE FLAME VENT-FREE
PROPANE/LP GAS GARAGE
HEATER
’
OWNER S OPERATION AND INSTALLATION MANUAL
Do not store, or use gasoline or other flammable
vapors and liquids in the 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
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IMPORTANT under dusty conditions Sellers of unvented propane or natural SAFETY INFORMATION 9. Turn heater off before using gas-fired supplemental room heaters WARNINGS furniture polish, wax, carpet shall provide to each purchaser a cleaner, or similar products. If IMPORTANT: Read this copy of 527 CMR 30 upon sale of the heated, the vapors from these owner’s manual carefully and unit. products may create a white In the state of
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PRODUCT FEATURES Figure1-Vent-Free Propane/LP Gas Heater(Model ML300TGA Shown) SAFETY DEVICE LOCAL CODES A standard requirement for all vent-free room Install and use heater with care. Follow all local heaters. This heater has a pilot with an Oxygen codes. In the absence of local codes, use the Depletion Sensor(ODS) safety shutoff system. latest edition of National Fuel Gas Code ANSZ223.1, The ODS/pilot shuts off the heater if there is also known as
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Unusually Tight Construction Confined and FRESH AIR FOR The air that leaks around doors and Unconfined Space COMBUSTION AND windows may provide enough fresh The National Fuel Gas Code VENTILATION air for combustion and ventilation. ANS Z223.1 defines a confined However, in buildings of unusually space as a space whose volume WARNING: This heater tight construction, you must provide is less than 50 cubic feet per shall not be installed in a addi
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3. Add the Btu/Hr of all fuel burning appliances in the space. Vent-free heater Btu/Hr Gas water healer* Btu/Hr Example: Gas furnace Btu/Hr Gas water heater 40,000 Btu/Hr Vented gas heater Btu/Hr Vent free heater + 20,000 Bt
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VENTILATION AIR Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or duels: You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code NFPA 54/ANS Z223.1, Section 5.3. Air for Combustion and Ventilation for required siz
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INSTALLATION Attaching to Wall Anchor: This FASTENING HEATER TO WALL WARNING: Maintain the Mounting Bracket method allows you to attach minimum clearances shown The mounting bracket is located on mounting bracket to hollow walls in Figure 4. If you can, back panel of heater(see figure 6). It has (wall areas between studs) or to provide greater clearances from been taped there for shipping. Remove solid walls (concrete or masonry). floor, ceili
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INSTALLATION Attaching Mounting Bracket To IMPORTANT: Do not Wall hammer key! For thick walls Note: Wall anchors, mounting (over 1/2" thick) or solid walls, screws, and spacers are in do not pop open wings. hardware package. The hardware package is provided with heater. Attaching To Wall Stud Method Figure 12 - Installing Bottom For attaching mounting bracket to Mounting Screws wall studs 1. Drill holes at marked locations 2. Mark screw l
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INSTALLATION CONNECTING TO GAS SUPPLY WARNING: A qualified service person must connect heater to gas supply. Follow all local codes. WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to the pressure regulator. CAUTION: Never connect heater directly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP
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OPERATING YOUR HEATER INSTALLATION THERMOSTAT MODEL CHECKING GAS Pressure Testing Heater Gas ML300TGA Connections CONNECTIONS 1. Open equipment shutoff valve FOR YOUR SAFETY WARNING: Test all gas piping (see Figure 15). READ BEFORE LIGHTING and connections for leaks after 2. Open propane/LP supply tank installing or servicing. Correct all WARNING: If you do not valve. leaks at once. follow these instructions 3. Make su
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OPERATING YOUR HEATER LIGHTING 7. Keep control knob pressed in This increases or decreases the INSTRUCTIONS for thirty (30) seconds after burner flame height. At times the room lighting pilot. After 30 may exceed the set temperature. If so, 1. STOP! Read the safety seconds, release control knob. the burner will shut off. The burner information on the side of If control knob does not pop will
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OPERATING YOUR HEATER LIGHTING NON-THERMOSTAT MODEL 6. With control knob pressed in, INSTRUCTIONS push down and release the ML300HGA ignitor button. This will light 1. STOP! Read the safety pilot. If needed, keep pressing information on the side of heater. FOR YOUR SAFETY ignitor button until pilot lights. 2. Check that gas supply to READ BEFORE LIGHTING 7. Keep control knob depressed
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CLEANING ODS/PILOT AND INSPECTING BURNER WARNING: If yellow tipping BURNER Check pilot flame pattern and occurs, your heater could Use a vacuum cleaner, burner flame pattern often. produce increased levels of pressurized air or small, soft carbon monoxide. If burner bristled brush to clean. PILOT FLAME PATTERN flame pattern shows yellow Figure 21 shows a correct pilot CLEANING BURNER tipping, follow instructions at flame pattern.
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TROUBLESHOOTING Note : All troubleshooting WARNING: Only a qualified CAUTION: Never use a wire, items are listed in order of service person should service and needle, or similar object to clean operation. repair heater. ODS/pilot. This can damage ODS/pilot unit. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed in, 1. Ignitor electrode is positioned 1. Replace ignitor. there is no spark at ODS/pilot. wrong. 2.
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TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Burner(s)does not light after 1. Burner orifice is clogged. 1. Clean burner orifice (see Cleaning ODS/pilot is lit. and Maintenance, page 13) or replace burner orifice. 2. Burner orifice diameter is too small 2. Replace burner orifice. 3. Inlet gas pressure is too low. 3. Contact local Propane/LP gas company. Delayed ignition of burner(s). 1. Manifold pressure is too low. 1. Contact
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TROUBLESHOOTING Continued 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. If you cannot reach your gas supplier, call the fire department. IMPORTANT: Operating heater where impurities in air exist may create odors. Clean- i
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SPECIFICATIONS ML300HGA ML300TGA Btu(available) 15,000/28,000 14,000/28,000 Gas Type Propane/LP Only Propane/LP Only Ignition Piezo Piezo Pressure Regulator Setting 8" W.C. 8"W.C Inlet Gas Pressure* (inches of water) Maximum 14" 14" Minimum 11" 11" Dimensions, Inches (HxWxD) Heater 23 1/2 26 5/8 8 23 1/2 26 5/8 8 × × × × Carton 26 1/2 28 1/2 91/4 26 1/2 28 1/2 91/4 × × × × Weight (pounds) Heater 26 26 Shipping 31 31 Note: Dimensions listed are outer most points on the heater (include
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ILLUSTRATED PARTS BREAKDOWN ML300TGA 18
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This list contains replaceable parts used in your heater. When ordering replacement PARTS LIST parts, follow the instructions listed under Replacement Parts 17 on page of this manual. ML300TGA ML300TGA KEY PART NO. NO. QTY DESCRIPTION MB10002 1 Cabinet Assembly 1 2 MB09001 Lower Front Panel Assembly 1 3 MB11002 Reflector Unit 1 4 ML089-01 Steel Wind Shield 1 5 ML084-01 Middle Panel 1 6 MB29001 Grill Guard 1 7 ML069-02 Self Tapping Screw 12 8 SIT545-175 Thermostat Valve
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ILLUSTRATED PARTS BREAKDOWN ML300HGA 20
