Procom MD2TPA, MD3TPA, MD5TPA, MD3TPA-BB, MD5TPA-BB User Manual
Vent-Free Gas Wall Heater
Infrared
Model # MD2TPA
MD3TPA
WARNING:This appliance is
equipped for (Natural and Propane)
gas. Field conversion is not permitted
other than between natural or
propane gases.
MD5TPA
MD3TPA-BB
MD5TPA-BB
Español p. 36
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.
– Do not store or use gasoline or other ammable 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 re department.
– Installation and service must be performed by a qualied installer, service agency
or the gas supplier.
This is an unvented gas-red 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 8 of this manual.
INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual
for future reference.
This appliance may be installed in an aftermarket, permanently located, manufactured
(mobile) home, where not prohibited by local codes. This appliance is only for use with
propane or natural gas. This appliance is equipped with a simple means to switch
between propane and natural gas. Field conversion by any other means including the
use of a kit is not permitted.
Questions about installation, operation, or troubleshooting? Before returning to your retailer, contact our
customer service department at 1-877-886-5989, 8:00 a.m.- 4:30p.m., EST, Monday-Friday or e-mail
customerservice@usaprocom.com.
PC-MD2TPA-1202
TABLE OF CONTENTS
TABLE OF CONTENTS
Important Safety Information ..............................................................................................................................4
Product Features................................................................................................................................................6
Preparing for Installation.....................................................................................................................................7
Air for Combustion & Ventilation.........................................................................................................................8
Installation ........................................................................................................................................................11
Operation .........................................................................................................................................................17
Care and Maintenance .................................................................................................................................20
Troubleshooting .................................................................................................................................21
Replacement Parts.............................................................................................................................24
WARNING: READ THE INSTALLATION & OPERATION INSTRUCTIONS BEFORE USING THIS APPLIANCE.
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, re, explosion, and carbon
monoxide poisoning.
2
2
PRODUCT SPECIFICATIONS
MODEL MD2TPA MD3TPA MD5TPA
BTU (available) 10,000 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.
BTU (available) 10,000 18,000 30,000
Gas Type Using Propane Gas Using Propane Gas Using Propane Gas
Pressure Regulator Setting 10 in. W.C. 10 in. W.C. 10 in. W.C.
Inlet Gas Pressure* (inches of water) * For purposes of input adjustment.
Maximum 14 in. 14 in. 14 in.
Minimum * 11 in. 11 in. 11 in.
Ignition Electric Piezo Electric Piezo Electric Piezo
Dimensions, Inches (HxWxD)
Heater 19 1/8 × 14 1/8 × 7 1/8 23 1/2 × 19 1/4 × 8 3/4 23 1/2 x 26 5/8 x 8 3/4
Carton 22 ×16 3/4 × 8 7/8 25 3/4 × 21 3/4 × 10 25 3/4 x 28 1/2 x 10
Weight (Pounds)
Heater 15.1 21.6 28.1
Shipping 18.1 25.6 33.1
MODEL MD3TPA-BB MD5TPA-BB
BTU (available) 20,000 30,000
Gas Type Using Natural Gas Using Natural Gas
Pressure Regulator Setting 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.
Minimum * 7 in. 7 in.
BTU (available) 18,000 30,000
Gas Type Using Propane Gas Using Propane Gas
Pressure Regulator Setting 10 in. W.C. 10 in. W.C.
Inlet Gas Pressure* (inches of water) * For purposes of input adjustment.
Maximum 14 in. 14 in.
Minimum * 11 in. 11 in.
Ignition Electric Piezo Electric Piezo
Dimensions, Inches (HxWxD)
Heater 23 1/2 × 19 1/4 × 8 3/4 23 1/2 x 26 5/8 x 8 3/4
Carton 25 3/4 × 21 3/4 × 10 25 3/4 x 28 1/2 x 10
Weight (Pounds)
Heater 24.5 31
Shipping 28.5 36
3
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, re, explosion, electrical shock,
and carbon monoxide poisoning.
Only a qualied installer, service agent, or local gas supplier may install and service this product.
WARNING: Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any
other appliance.
WARNING: This appliance can be used with propane or natural gas. It is shipped from the factory adjusted for
use with propane.
CARBON MONOXIDE POISONING: Early signs of carbon monoxide poisoning resemble the u with headache,
dizziness and/or nausea. If you have these signs, heater may not be working properly. Get fresh air at once!
Have heater serviced. Some people - pregnant women, persons with heart or lung disease, anemia, those
under the inuence of alcohol, those at high altitude - are more affected by carbon monoxide than others.
NATURAL AND PROPANE/LP GAS: Natural and Propane/LP gas are odorless. An odor-producing agent is
added to the gas. The odor helps you detect a gas leak. However, the odor added to the gas can fade. Gas may
be present even though no odor exists.
WARNING: Any change to this heater or its controls can be dangerous.
WARNING: Do not use any accessories not approved for use with this heater.
WARNING: Carefully supervise young children when they are in the room with the heater.
WARNING: Make sure grill guard is in place before running heater.
WARNING: Keep the appliance area clear and free from combustible materials, gasoline, and other am
mable vapors and liquids.
WARNING: Due to high temperatures, the appliance should be located out of trafc and away from furniture
and draperies.
WARNING: Heater becomes very hot when running . Keep children and adults away from hot surfaces to
avoid burns or clothing ignition. Heater will remain hot for a time after shutoff. Allow surfaces to cool before
touching.
WARNING: Do not place clothing or other ammable material on or near the appliance. Never place any
objects in the heater.
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, or the place which the strong wind would shut down
the appliance.
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 8 through 10. If heater keeps shutting off, see Troubleshooting, pages 21
through 23.
4. Keep all air openings in front and bottom of heater clear and free of debris. This will ensure enough air for
proper combustion.
444
5. 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 ammable 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. Always run heater with control knob at PILOT/IGN, LOW or HIGH locked positions. Never set control knob be
tween locked positions. Poor combustion and higher levels of carbon monoxide may result.
9. Do not use heater if any part has been under water. Immediately call a qualied service technician to inspect
the room heater and to replace any part of the control system and any gas control which has been under water.
10.Turn off and unplug heater and let cool before servicing. Only a qualied service person should service and repair
heater.
11. Operating heater above elevations of 4,500 feet could cause pilot outage.
12. To prevent performance problems, do not use propane/LP fuel tank of less than 100 lbs. capacity.
QUALIFIED INSTALLING AGENCY
Only a qualied agency should install and replace gas piping, gas utilization equipment or accessories, and repair and
equipment servicing.The term “qualied agency” means any individual, rm, corporation, or company that either in
person or through a representative is engaged in and is responsible for:
a) Installing, testing, or replacing gas piping or
b) Connecting, installing, testing, repairing, or servicing equipment; that is experienced in such work; that is familiar
with all precautions required; and that has complied with all the requirement of the authority having jurisdiction.
55
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. The heater can easily be changed to Natural gas by having your qualied installer follow the
instructions on page 15 and the markings on the heater.
THERMOSTATIC CONTROL ON THERMOSTAT MODEL
These heaters have a control valve with a thermostat sensing bulb. This results in the greatest heater comfort and
may result in lower gas bills.
State of Massachusetts: The installation must be made by a licensed plumber or gas tter in the Commonwealth
of Massachusetts. Sellers of unvented propane or natural gas-red 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-red space heaters shall be prohibited in
bedrooms and bathrooms.
In the State of Massachusetts the gas cock must be a T-handle type. The State of Massachusetts requires that
a exible appliance connector cannot exceed three feet in length.
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, lnc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, lnc.
1 Batterymarch Park
Quincy, MA 02269-9101
6
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.
Before installing heater, make sure you have the items listed below:
• piping (check local codes)
• sealant (resistant to natural gas and propane/LP gas)
• equipment shutoff valve*
• test gauge connection*
• sediment trap
• tee joint
• pipe wrench
• exible gas hose (check local codes)
* A CSA design-certied equipment shutoff valve with
1/8-inch NPT tap is an acceptable alternative to test
gauge connection. Purchase the optional CSA designcertied equipment shutoff valve from your dealer.
UNPACKING
1. Remove heater from carton.
2. Remove all protective packaging applied to heater for shipping
3. Check heater for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater.
Figure 1 - Vent-Free Gas Heater
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 (.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. In most applications, the water vapor enhances the low humidity
atmosphere experienced during cold weather.
The following steps will help ensure that water vapor does not become a problem.
1. Be sure the heater is sized properly for the application, including ample combustion air and circulation air.
2. If high humidity is experienced, a dehumidier may be used to help lower the water vapor content of the air.
3. Do not use an unvented room heater as the primary heat source.
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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 classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 8 through 10 will help you classify your space and provide adequate ventilation.
Conned and Unconned Space
A conned space is a space whose volume is less than 50 cu. ft. per 1,000 BTU/hr (4.8 m^3 per kw) of the aggregate
input rating of all appliances installed in that space and an unconned space as a space whose volume is not less than
50 cubic feet per 1,000 BTU/hr (4.8 m^3 per kw) of the aggregate input rating of all appliances installed in that space.
Rooms connecting directly with the space in which the appliances are installed*, through openings not furnished with
doors, are considered a part of the unconned space.
This heater shall not be installed in a conned space or unusually tight construction unless provisions are provided for
adequate combustion and ventilation air.
* Adjoining rooms are connecting only if there are doorless passageways or ventilation grills between them.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in
buildings of unusually tight construction, you must provide additional fresh air.
Unusually tight construction is dened as construction where:
a) Walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one
perm (6×10
b) Weather stripping has been added on openable windows and on doors and
c) Caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and
oors, between wall ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and
at other openings.
If your home meets all of the three criteria above, you must provide additional fresh air. See “Ventilation Air From
Outdoors”. If your home does not meet all of the three criteria above, proceed to “Determining Fresh-Air Flow For
Heater Location”.
-11
kg per pa-sec-m2) or less with openings gasketed or sealed and
88
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Conned or Unconned Space
Use this worksheet to determine if you have a conned or unconned 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. (volume of space)
If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to
the total volume of the space.
2. Divide the space volume by 50 cubic feet to determine the maximum BTU/hr the space can support.
(volume of space) ÷ 50 cu. ft. =(Maximum BTU/hr the space can support)
3. Add the BTU/hr of all fuel burning appliances in the space.
Vent-free heater
Gas water heater*
Gas furnace
Vented gas heater
Gas heater logs
Other gas appliances* +
Total =
*Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the
outdoors.
4. Compare the maximum BTU/hr the space can support with the actual amount of
BTU/hr used
BTU/hr (maximum the space can support)
BTU/hr (actual amount of BTU/hr used)
Example : 51,200 BTU/hr (maximum the space can support)
56,000 BTU/hr (actual amount of BTU/hr used)
The space in the above example is a conned space because the actual BTU/hr used is more than the maximum BTU/
hr the space can support.
You must provide additional fresh air. Your options are as follows:
a) Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space,
remove door to adjoining room or add ventilation grills between rooms. See “ Ventilation Air From Inside Building ”
on next page.
BTU/hr
BTU/hr
BTU/hr
BTU/hr
BTU/hr
BTU/hr
BTU/hr
Example:
Gas water heater 30,000 BTU/hr
Vent-free heater + 26,000 BTU/hr
Total = 56,000 BTU/hr
b) Vent room directly to the outdoors. See “ Ventilation Air From Outdoors ” on next page.
c) Install a lower BTU/hr heater if lower BTU/hr size makes room unconned. If the actual BTU/hr used is less
than the maximum BTU/hr the space can support, the space is an unconned space. You will need no
additional fresh air ventilation.
99
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 unconned
space. When ventilating to an adjoining unconned
space, you must provide two permanent openings: one
within 12 inches of the ceiling and one within 12 inches
of the oor on the wall connecting the two spaces
(see options 1 and 2, Figure 2). You can also remove
the door into adjoining room (see option 3, Figure 2).
Follow the National Fuel Gas Code. ANSI Z223.1/
NFPA 54, Air for Combustion and Ventilation for
required size of entilation grills or ducts.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or
ducts. You must provide two permanent openings: one
within 12 inches of the ceiling and one within 12 inches
of the oor. 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, ANSI Z223.1/ NFPA 54, Air for Combustion and
Ventilation for required size of ventilation grills or ducts.
Figure 2 - Ventilation Air from Inside Building
NOTE: Ba se n ot included. No t for use i n
bedrooms or bathrooms.
IMPORTANT: Do not provide openings for inlet or
outlet air into attic if attic has a thermostat-controlled
power vent. Heated air entering the attic will activate
the power vent. Rework worksheet, adding the space of
the adjoining unconned space. The combined spaces
must have enough fresh air to supply all appliances in
both spaces.
Figure 3 - Ventilation Air from Outdoors
1010
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.
CAUTION: If you install the heater in a home garage:
• Heater pilot and burner must be at least 18 inches above the oor.
• Place heater where moving vehicle will not hit it.
WARNING: A qualied service person must install heater. Follow all local codes.
WARNING: Never install the heater
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture, clothing, or other ammable objects are less than 36 inches from the front, top, or
sides of the heater
• in high trafc areas
• in windy or drafty areas
CAUTION: This heater creates warm air currents. These currents move heat to wall surfaces next to heater.
Installing heater next to vinyl or cloth wall coverings or operating heater where impurities (such as tobacco
smoke, aromatic candles, cleaning uids, oil or kerosene lamps, etc.) in the air exist, may cause walls to discolor.
IMPORTANT: Vent-free heaters add moisture to the air. Although this is benecial, installing heater in rooms
without enough ventilation air may cause mildew to form too much moisture. See Air for Combustion and
Ventilation, pages 8 through 10
Check Gas Type
Be sure your gas supply is right for your heater.
Otherwise, call dealer where you bought the
heater for proper type heater.
Clearances To Combustibles
Carefully follow the instructions below. This
heater is a freestanding unit designed to be
mounted on a wall or set directly on the oor.
WARNING: Maintain the minimum clearances
shown in Figure 4. If you can, provide greater
clearances from oor, ceiling, and joining wall.
LOCATING HEATER
This heater is designed to be mounted on a wall.
For convenience and efciency, install heater:
1) where there is easy access for operation,
inspection, and service.
2) In the coldest part of room.
Figure 4 - Mounting clearances as viewed from
front of heater (inches)
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