Procom MN180TPH, MN180HPH, MN300TPH, MN300HPH, ML150TPH Installation & Operation Instructions
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Vent-Free Gas
Infrared space Heater
Printed in China
PC-MEL110-01D-0708
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
ML150TPH
ML150HPH
ML250TPH
ML250HPH
MN180TPH
MN180HPH
MN300TPH
MN300HPH
WARNING: IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED
EXACTLY, A FIRE MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL
INJURY, OR LOSS OF LIFE.
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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 5 of this manual.
INSTALLER: DO NO 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 only for use
with the type of gas indicated on the rating plate. This appliance is not convertible for
use with other gases.
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TABLE OF CONTENTS
Important Safety Information ..........................................................................................................................3
Air for Combustion & Ventilation ....................................................................................................................5
Product Features .............................................................................................................................................7
Preparing for Installation.................................................................................................................................8
Installation .......................................................................................................................................................11
Operation........................................................................................................................................................14
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.
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.
Product Specifications ...........................................................................................................................17
Troubleshooting ............................................................................................................................................18
Replacement Parts.........................................................................................................................................21
Part lists.........................................................................................................................................................22
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IMPORTANT SAFETY INFORMATION
WARNING: Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or
any other appliance.
Installation and service must be performed by a qualied installer, service agency, or local gas supplier.
This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not
convertible for use with other gases.
WARNING: When used without fresh air, heater may give off CARBON MONOXIDE, an odorless, poisonous gas.
DO NOT INSTALL HEATER UNTIL ALL NECESSARY PROVISIONS ARE MADE FOR COMBUSTION
AND VENTILATION. CONSULT THE WRITTEN INSTRUCTIONS PROVIDED WITH THE HEATER FOR
INFORMATION CONCERNING COMBUSTION AND VENTILATION. IN THE ABSENCE OF INSTRUCTIONS. REFER TO THE NATIONAL FUEL GAS CODE. ANSI Z223. 1. SECTION 5.3 OR APPLICABLE
LOCAL CODES.
This heater is equipped with a PILOT LIGHT SAFETY SYSTEM designed to turn off the heater if not
enough fresh air is available.
DO NOT TAMPER WITH PILOT LIGHT SAFETY SYSTEM! If heater shuts off, do not relight until you provide fresh air. If heater keeps shutting off have it serviced. Keep burner and control compartment clean.
CARBON MONOXIDE POISONING MAY LEAD TO DEATH! Early signs of carbon monoxide poison-
ing 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: Models MN180TPH, MN180HPH, MN300TPH, MN300HPH are equipped for natural gas. Field
conversion is not permitted. Models ML150TPH, ML150HPH, ML250TPH, ML250HPH are equipped for
propane gas. Field conversion is not permitted.
WARNING: Do not use any accessories not approved for use with this heater.
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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.
1. This appliance is for use with only the type of gas indicated on the rating plate. This appliance is not
convertible for use with other gases.
2. Do not place Propane/LP supply tank(s) inside any structure. Place Propane/LP supply tank(s) outdoors.
3. 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 yo u ca nn ot reach your gas supplier, call the re department.
4. Models MN/L 100HPH and MN/L100TPH shall not be installed in a bathroom.
5. 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 5 through 6. If heater keeps shutting off, see Troubleshooting, pages 18
through 20.
6. Keep all air openings in front and bottom of heater clear and free of debris. This will ensure enough air for
proper combustion.
7. If heater shuts off. Do not relight until you provide fresh, outside air. If heater keeps shutting off, have it ser
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viced.
8. Do not run heater:
Where ammable liquids or vapors are used or stored.
Under dusty conditions.
9. 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.
10. Always run heater with control knob at PILOT/IGN, LOW or HIGH locked positions. Never set control knob
between locked positions. Poor combustion and higher levels of carbon monoxide may result.
11. 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.
12. Turn off and unplug heater and let cool before servicing. Only a qualied service person should service and
repair heater.
13. Operating heater above elevations of 4,500 feet could cause pilot outage.
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AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall not be installed in a conned space or unusually tight construction unless pro-
visions are provided for adequate combustion and ventilation air. Read the following instructions to insure
proper fresh air for this and other fuel-burning appliances in your home.
Providing Adequate Ventilation
The following are excerpts from National Fuel Gas Code, NFPA 54/ANSI Z223.1, Section 5.3, Air for Combustion
and 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 5 through 6 will help you classify your space and provide adequate ventilation.
Conned and Unconned Space
The National Fuel Gas Code, ANSI Z223.1 denes a conned space as a space whose volume is less than 50
cubic feet per 1,000 Btu per hour (4.8 m3 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 per hour
(4.8 m3 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:
Walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating
of one perm (6×10
-11
kg per pa-sec-m2) or less with openings gasketed or sealed and
Weather stripping has been added on openable windows and doors and
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”.
a)
b)
c)
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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 20ft. (length)×16ft. (width)×8ft. (ceiling height) =2560cu. 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:
Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconned
space, remove door to adjoining room or add ventilation grills between rooms. See “Ventilation Air From
Inside Building”.
Vent room directly to the outdoors. See “Ventilation Air From Outdoors”.
Install a lower Btu/Hr heater if lower Btu/Hr size makes room unconned.
WARNING: If the area in which the heater may be operated is smaller than that dened as an unconned 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, Air for Combustion and Ventilation, or
applicable local codes.
a)
b)
c)
Example:
Gas water heater 30,000 Btu/Hr
Vent-free heater + 26,000 Btu/Hr
Total = 56,000 Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
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. NFPA 54/ANSI Z223.1,
Section 5.3, Air for Combustion and Ventilation
for required size of ventila-
tion grills or ducts.
Figure 1 - Ventilation Air from Outdoors
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Figure 2 - Ventilation Air from
Inside Building
NOTE: Base Not included. Not for
use in bedrooms or bathrooms.
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 an automatic control system. This system requires AAA batteries (provided).
Thermostatic Heat Control (MN180TPH, MN300TPH, ML150TPH, ML250TPH models)
This heater has a control with a thermostat sensing bulb. This results in the greatest heater comfort and will
result in lower gas bills.
LOCAL CODES
This heater is designed for vent free operation. Some state and local codes prohibit the use of vent-free gas heaters.
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, also known as 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
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. Fol-
low the National Fuel Gas Code, NFPA 54/ANSI Z223.1, Section 5.3, Air for
Combustion and Ventilation for required size of ventilation grills or ducts.
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 adjoin-
ing unconned space. The combined spaces must have enough fresh air to
supply all appliances in both spaces.
State of M as sa ch usetts: T he installation must be ma de by a licensed p lu mb er or g as fitter i n 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-fired 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.
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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 design-certied 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.
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Figure 3- Vent - Free Gas Heater
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS
Water vapor is a by-product of gas combustion. An un-
vented room heater produces approximately one (1)
ounce (30ml) 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 applica-
tions, the water vapor does not create a problem. In
most applications, the water vapor enhances the low
humidity atmosphere experience during cold weather.
The following steps will help insure that water vapor
does not become a problem.
1. Be sure the heater is sized properly for the ap
plication, 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.
NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heat-
ing 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.
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