Vent-Free Gas Wall Heater Infrared WARNING:This appliance is equipped for (Natural and Propane) gas. Field conversion is not permitted other than between natural or propane gases. Model # MD2TPA MD3TPA MD5TPA MD3TPA-BB MD5TPA-BB 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.
TABLE OFCONTENTS CONTENTS TABLE OF Important Safety Information ..............................................................................................................................4 Product Features................................................................................................................................................6 Preparing for Installation....................................................................................................................................
PRODUCT SPECIFICATIONS MODEL MD2TPA MD3TPA MD5TPA BTU (available) 12,000 20,000 30,000 Gas Type Using Natural Gas Using Natural Gas Using Natural Gas Pressure Regulator Setting 6 in. W.C. 6 in. W.C. 6 in. W.C. Inlet Gas Pressure* (inches of water) * For purposes of input adjustment. Maximum 10.5 in. 10.5 in. 10.5 in. Minimum * 7 in. 7 in. 7 in.
IMPORTANT SAFETY IMPORTANT SAFETYINFORMATION 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. Only a qualified installer, service agent, or local gas supplier may install and service this product.
. If heater shuts off, do not relight until you have provided fresh, outside air. If heater keeps shutting off, have it serviced. 6. Do not run heater: • Where flammable liquids or vapors are used or stored. • Under 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.
PRODUCT FEATURES SAFETY PILOT This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS/pilot shuts off the heater if there is not enough fresh air. PIEZO IGNITION SYSTEM This heater is equipped with piezo ignitor. This system requires no matches, batteries, orother sources to light heater. 2 GAS OPTIONS CAPABLE Your heater is equipped to operate on either Propane or Natural gas. The heater is shipped from the factory ready for connecting to Propane.
PREPARING FOR INSTALLATION Before beginning assembly or operation of the product, make sure all parts are present. Compare parts with package contents list and diagram above. If any part is missing or damaged, do not attempt to assemble, install or operate the product. Contact customer service for replacement parts.
AIR FOR COMBUSTION AND VENTILATION WARNING: If the area in which the heater may be operated does not meet the required volume for indoor combustion air, combustion and ventilation air shall be provided 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. Providing Adequate Ventilation All spaces in homes fall into one of the three following ventilation classifications: 1. Unusually Tight Construction 2.
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. 1. Determine the volume of the space Length × Width × Height = cu. ft. (volume of space) Example: Space size 20 ft. (length) × 16 ft. (width)×8 ft. (ceiling height) =2560 cu. ft.
WARNING: If the area in which the heater may be operated does not meet the required volume for indoor combustion air, combustion and ventilation air shall be provided 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 From lnside 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.
FASTENING HEATER TO WALL Mounting Bracket The mounting bracket is located on back panel of heater (see Figure 5). It has been taped there for shipping. Remove mounting bracket from back panel. Removing Front Panel of Heater 1. Remove two screws near bottom corners of lower front panel . 2. Pull bottom of lower front panel forward, then down (see Figure 6). Methods For Attaching Mounting Bracket To Wall Use only the last hole on each end of mounting bracket to attach bracket to wall.
Attaching to Wall Anchor Method For attaching mounting bracket to hollow walls (wall areas between studs) or solid walls (concrete or masonry): 1. Drill holes at marked locations using 5/16-inch drill bit. For solid walls (concrete or masonry), drill at least 1 inch deep. 2. Fold wall anchor as shown in Figure 8. 3. Insert wall anchor (wings first) into hole. Tap anchor flush to wall. 4. For thin walls (1/2 inch or less), insert red key into wall anchor.
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. CAUTION: Use only new, black iron or steel pipe. Internally tinned copper tubing may be used in certain areas.
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. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 13.
Figure 14 Figure 15 Figure 16 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. Correct all leaks at once. PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Test Pressures In Excess Of 1/2 PSIG (3.5kPa) 1.
Pressure Testing Heater Gas Connections 1. Open equipment shutoff valve (see Figure 17). 2. Open gas supply tank valve. 3. Make sure control knob of heater is in the OFF position. 4. Remove front panel. 5. Check all joints from equipment shutoff valve to control valve (see Figure 17). Apply mixture of liquid soap and water to gas joints. If bubbles form, there may be a leak. 6. Correct all leaks at once. 7. Light heater (see Lighting Instructions on page 18).
LIGHTING INSTRUCTIONS 1. STOP! Read the safety information on the side of the heater. 2. Make sure equipment shutoff valve is fully open. 3. Turn control knob clockwise 4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Do not try to light any appliance. Do not touch electrical switch or use any phone in the building. Immediately contact gas supplier from a neighbor’s phone. Follow gas supplier’s instructions.
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: • turn heater off (see “To Turn Off Gas to Appliance” on page 18) • see Troubleshooting pages 21 through 23.
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. ODS/PILOT AND BURNER • Use a vacuum cleaner, pressurized air, or a small, soft bristled brush to clean.
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. IMPORTANT: Operating heater where impurities in air exist may create odors.
Problem ODS/pilot lights but flame goes out when control knob is released. Possible Cause 1. Control knob is not fully pressed in. 2. Control knob is not pressed in long enough. 1. Press in control knob fully. 2. After ODS/pilot lights, keep control knob pressed in 30 seconds. 3. Equipment shutoff valve is not fully open. 4. Thermocouple connection is loose. 3. Fully open equipment shutoff valve. 4. Hand tighten until snug, and then tighten ¼ turn more. 5. Replace thermocouple. 6.
Problem Possible Cause Corrective Action Slight smoke or odor during initial operation 1. Residues from manufacturing process. 1. Problem will stop after a few hours of operation. Heater produces a whistling noise when burner is lit. 1. Turning control knob to high (5) position when burner is cold. 2. Air in gas line. 1. Turn control knob to low (1) position and let warm up for a minute. 2. Operate burner until air is removed from line. Have gas line checked by local propane/LP gas company. 3.
IMPORTANT SAFETY INFORMATION 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 (877)886-5989 for referral information.
PARTS LIST (MD2TPA) This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 24 of this manual.
ILLUSTRATED PARTS MD2TPA 24 22 16 1 17 18 23 14 13 5 11 9 12 13 2 3 6 7 8 10-1 10-2 9 4 18 20 19 21 26 15 14 8
PARTS LIST (MD3TPA) This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 24 of this manual.
ILLUSTRATED PARTS MD3TPA 24 1 22 16 17 18 23 15 14 5 11 9 12 13 2 6 10-1 10-2 7 8 3 25 9 4 18 20 19 21 28 15 14 8
PARTS LIST (MD5TPA) This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 24 of this manual.
ILLUSTRATED PARTS MD5TPA 24 1 22 16 17 18 23 2 15 14 5 11 9 12 13 3 6 7 8 4 10-1 10-2 9 25 18 20 19 21 30 15 14 8
PARTS LIST (MD3TPA-BB) This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 26 of this manual.
ILLUSTRATED PARTS MD3TPA-BB 24 1 22 16 17 18 23 15 14 5 9 2 6 10-1 10-2 7 8 3 27 9 4 18 20 19 21 26-1 26-2 32 25 11 12 13 15 14 8
PARTS LIST (MD5TPA-BB) This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 26 of this manual.
ILLUSTRATED PARTS MD5TPA-BB 24 1 22 16 17 18 23 2 15 14 5 11 9 12 13 3 6 18 4 7 8 10-1 10-2 20 19 9 27 21 26-1 26-2 34 25 15 14 8
WARRANTY INFORMATION Keep This Warranty IMPORTANT: We urge you to fill your warranty registration card within TEN(10) days of date of installation, complete with the entire serial number which can be found on the rating plate. Retain this portion of the card for your record. Always specify model and serial numbers when communicating with customer service. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty.