VENT-FREE PROPANE/LP GAS SPACE HEATER OWNER’S OPERATION AND INSTALLATION MANUAL INFRARED MODELS ML150HPA, ML150TPA ML250HPA, ML250TPA 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 the v icinity of this or any other appliance. — WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance.
TABLE OF CONTENTS Safety......................................................... 3 Qualified Installing Agency......................... 4 Specifications............................................. 5 Product Features........................................ 5 Local Codes............................................... 6 Preparing For Installation........................... 6 Unpacking.................................................. 6 Water Vapor: A By-Product Of Unvented Room Heaters.......................
SAFETY 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. Only a qualified installer, service agent, or local gas supplier may install and service this product. WARNING: Keep the appliance area clear and free from combustible materials, gasoline, and other flammable vapors and liquids.
SAFETY 1. Do not place Propane/LP supply tank(s) inside any structure. Propane/LP supply tank(s) must be placed outdoors. 2. This heater shall not be installed in a bedroom or bathroom. 3. This heater needs fresh air ventilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available. See Air for Combustion and Ventilation, pages 7 through 9. If heater keeps shutting off, see Troubleshooting, page 21. 4.
SPECIFICATIONS MODEL ML150HPA Ignition Gas Type BTU (available) Pressure Regulator Setting Inlet Gas Pressure* (inches of water) Heater Dimensions (HxWxD) ML150TPA Piezo Piezo Propane/LP Propane/LP 6,000-15,000 15,000 10" W.C. 10" W.C.
LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code, ANSI Z223.1/NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association, Inc. 1 Batterymarch Park Quincy, MA 02269-9101 State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts.
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS Water vapor is a by-product of gas combustion. An unvented room heater produces approximately one (1) ounce (30 mL) of water for every 1,000 BTUs (0.3 KWs) of gas input per hour. Unvented room heaters are recommended as supplemental heat (a room) rather than a primary heat source (an entire house). In most supplemental heat applications, the water vapor does not create a problem.
AIR FOR COMBUSTION AND VENTILATION Confined and Unconfined Space The National Fuel Gas Code, ANSI Z223.1/ NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu/hr (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu/hr (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space.
AIR FOR COMBUSTION AND VENTILATION 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, the International Fuel Gas Code, or applicable local codes. VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space.
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.
INSTALLATION LOCATING HEATER This heater is designed to be mounted on a wall. You can locate heater on the floor, away from a wall. An optional floor mounting stand is needed. See Accessories, page 35. For convenience and efficiency, install heater: 1. Where there is easy access for operation, inspection, and service. 2. In the coldest part of room. An optional fan kit is available from your dealer See Accessories, page 35. If planning to use fan, locate heater near an electrical outlet.
INSTALLATION 2. Mark screw locations on wall (see Figure 8). Note: Mark only last hole on each end of mounting bracket. Insert mounting screws through these holes only. 3. Remove tape and mounting bracket from wall. Attaching Mounting Bracket To Wall Note: Wall anchors, mounting screws, and spacers are in hardware package. The hardware package is provided with heater. Attaching to Wall Stud Method For attaching mounting bracket to wall studs: 1. Drill holes at marked locations using 9/64" drill bit. 2.
INSTALLATION Horizontal Slots Stand-Out Tab Mounting Bracket (attached to wall) Figure 11 - Mounting Heater Onto Mounting Bracket Installing Bottom Mounting Bracket 1. Install bottom bracket to heater bottom with two screws. It may be more convenient to remove heater from wall bracket to attach. 2. Place heater on wall mounting bracket. 3. Mark screw locations on wall. 4. Remove heater from mounting bracket. 5. If installing bottom mounting screws into hollow or solid wall, install wall anchors.
INSTALLATION CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting into gas piping and/or fittings. CAUTION: Use pipe joint sealant that is resistant to Propane/ LP Gas.
INSTALLATION as shown in Figure 14, page 14. Pointing the vent down protects it from freezing rain or sleet. Install sediment trap in supply line as shown in Figure 13, page 14. Place sediment trap where it is within reach for cleaning. Place sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.
OPERATION FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
OPERATION CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve. Thermocouple Ignitor Electrode Pilot Burner Figure 18 - Pilot Control Knob PILOT/IGN OFF LOW LOW MED PILOT/IGN OFF HIGH LOW MED MED PILOT/IGN HIGH OFF HIGH LOW MED PILOT/IGN OFF HIGH LOW OFF MED HIGH Figure 19 - Burner Patterns (Manual Control) THERMOSTAT MODELS LIGHTING INSTRUCTIONS 1. STOP! Read the safety information on page 16. 2. Make sure equipment shutoff valve is fully open. 3.
OPERATION Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety interlock system. Wait one (1) minute before lighting pilot again. 8. Turn control knob counterclockwise to desired heating level. The main burner should light. Set control knob to any heat level between HI and LO. Control Knob LOW-HIGH LO OT PIL HI OFF Thermocouple Ignitor Electrode CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve.
INSPECTING HEATER IMPORTANT: Owner’s should check pilot flame pattern and burner flame pattern often. Incorrect flame patterns indicate the need for cleaning (see Care and Maintenance, page 20) or service. WARNING: Only a qualified service person should service and repair heater. This includes maintenance requiring replacement or alteration of components. PILOT FLAME PATTERN Figure 24 shows a correct pilot flame pattern. Figure 25 shows an incorrect pilot flame pattern.
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. WARNING: Failure to keep the primary air opening(s) of the burner(s) clean may result in sooting and property damage.
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. • If you cannot reach your gas supplier, call the fire department. WARNING: Only a qualified service technician should service and repair heater. Make sure that power is turned off before proceeding.
TROUBLESHOOTING Problem Possible Cause Corrective Action ODS/pilot lights but flame 1. Control knob is not fully 1. Press in control knob fully. goes out when control pressed in. knob is released. 2. Control knob is not pressed 2. After ODS/pilot lights, keep in long enough. control knob pressed in 30 seconds. 3. Equipment shutoff valve is 3. Fully open equipment shutoff not fully open. valve. 4. Thermocouple connection is 4. Hand tighten until snug, and loose at control valve.
TROUBLESHOOTING Problem Possible Cause Corrective Action Slight smoke or odor 1. Residues from manufactur- 1. Problem will stop after a few during initial operation. ing process. hours of operation. Heater produces a click- 1. Metal is expanding while 1. This is common with most ing/ticking noise just after heating or contracting while heaters. If noise is excesburner is lit or shut off. cooling. sive, contact qualified service technician. White powder residue 1. When heated, the vapors 1.
PARTS MODEL ML150HPA 24 www.usaprocom.
PARTS MODEL ML150HPA This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 32 of this manual.
PARTS MODEL ML250HPA ODS Pilot Assembly Burner Assembly 26 www.usaprocom.
PARTS MODEL ML250HPA This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 32 of this manual.
PARTS MODEL ML150TPA ODS Pilot Assembly 28 Burner Assembly www.usaprocom.
PARTS MODEL ML150TPA This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 32 of this manual. ITEM PART # DESCRIPTION QTY 1 MB10055 Cabinet Assembly 1 2 MB09002 Lower Front Panel 1 3 MB11003 Reflector Unit 1 4 MB19004 Burner Assembly 1 5 SIT545-000-B Thermostat Valve Assembly 1 6 ML111-01A Thermostat Valve Base 1 7 845-4.
PARTS MODEL ML250TPA ODS/Pilot Assembly 30 Burner Assembly www.usaprocom.
PARTS MODEL ML250TPA This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 32 of this manual.
REPLACEMENT PARTS Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. PARTS UNDER WARRANTY Contact authorized dealers of this product. If they can’t supply original replacement parts, call Customer Service toll free at 1-866-573-6074 for referral information.
ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, contact ProCom Heating, Inc. at 1-866-573-6074 for information. EQUIPMENT SHUTOFF VALVE For all models. Equipment shutoff valve with 1/8” NPT tap. OPTIONAL FAN KIT PF06-YJLF-BMB Optional fan kit. The fan has 3 settings ON/ OFF/Auto. Please refer to PF06-YJLF-BMB instructions. FLOOR MOUNTING STAND PF09B For locating heater on the floor, away from a wall.
NOTES ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ____________________________________________________________________
NOTES ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ____________________________________________________________________
WARRANTY KEEP THIS WARRANTY Model ________________________________ Serial No. _____________________________ Date Purchased ________________________ Keep receipt for warranty verification. REGISTER YOUR PRODUCT AT WWW.USAPROCOM.COM IMPORTANT: We urge you to register your product within 10 days of date of installation, complete with entire serial number which can be found on the rating plate. Please fill out the warranty information above for your personal records. Retain this manual for future reference.
