VENT-FREE PROPANE/LP GAS
SPACE HEATER
OWNER’S OPERATION AND
INSTALLATION MANUAL
INFRARED MODELS
ML1PHG, MN1PHG
ML1PTG, MN1PTG
WARNING: If the information in this manual is not
followed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other ammable va-
pors 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 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.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Questions, problems, missing parts? Before returning to your retailer, call
our customer service department at 1-866-573-0674, 8:00 am - 4:45 pm CST,
Monday through Friday or email contact@usaprocom.com
TABLE OF CONTENTS
Safety ........................................................ 3
Specications ............................................ 4
Product Identication ................................. 5
Qualied Installing Agency ........................ 5
Product Features ....................................... 5
Air For Combustion and Ventilation ........... 6
Local Codes............................................... 6
Unpacking.................................................. 6
Water Vapor: A By-Product Of
Unvented Room Heaters ...................... 6
Installation ................................................. 8
Operation ................................................. 14
Inspecting Burners................................... 17
Care And Maintenance ............................ 18
Troubleshooting ....................................... 19
Replacement Parts .................................. 23
Accessories ............................................. 23
Service Hints ........................................... 23
Technical Service..................................... 23
Warranty .................................................. 24
SAVE THIS BOOK
This is an unvented gas-red heater. It uses air (oxygen)
from the room in which it is installed. Provisions for ad-
equate combustion and ventilation air must be provided.
Refer to Air For Combustion and Ventilation section on
page 6 of this manual.
WARNING: Improper installation, adjustment, al-
teration, service or maintenance can cause injury or
property damage. Refer to this manual for correct installation and operational procedures. For assistance
or additional information consult a qualied installer,
service agency or the gas supplier.
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 convert-
ible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.
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200314-01D2
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.
NATURAL AND PROPANE GAS: Natural and
Propane gas are odorless. An odor-making
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.
Only a qualied installer, service
agent, or local gas supplier may
install and service this product.
WARNING: Keep the appli-
ance area clear and free from
combustible materials, gasoline,
and other ammable vapors and
liquids.
This heater is equipped for either
natural or propane gas. Field
conversion is not permitted.
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.
DANGER: Carbon monoxide
poisoning may lead to death!
CARBON MONOXIDE POISONING: Early
signs of carbon monoxide poisoning resemble
the u, with headaches, dizziness or nausea.
If you have these signs, the heater may not be
working properly. Get fresh air at once! Have
heater serviced. Some people are more affected by carbon monoxide than others. These
include pregnant women, people with heart or
lung disease or anemia, those under the inuence of alcohol and those at high altitudes.
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: 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. Children
and adults should be alerted
to the hazards of high surface
temperatures and should stay
away to avoid burns and clothing ignition. Heater will remain
hot for a time after shutoff. Allow
surfaces to cool before touching.
WARNING: Do not place
clothing or other flammable
material on or near the appli-
ance. Never place any objects
in the heater.
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3200314-01D
SAFETY
1. Do not place propane supply tank(s) inside
any structure. Propane supply tank(s)
must be placed outdoors.
2. Heaters with a maximum input over
6,000 Btu/Hr shall not be installed in a
bathroom. Heaters with a maximum input
over 10,000 Btu/Hr shall not be installed
in a bedroom.
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
6 and 7. If heater keeps shutting off, see
Troubleshooting, page 19.
4. Keep all air openings in front and bottom
of heater clear and free of debris. This will
ensure enough air for proper combustion.
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. For manual controlled models, always run
heater with control knob at the ON, locked
position. Never set control knob between
locked positions. Poor combustion and
higher levels of carbon monoxide may
result.
8. 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.
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 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 fuel tank of less than 100 lbs.
capacity.
SPECIFICATIONS
MODEL MN1PHG ML1PHG MN1PTG ML1PTG
Ignition Piezo Piezo Piezo Piezo
Gas Type Natural Propane Natural Propane
BTU/Hr (available) 10,000 10,000 10,000 10,000
Pressure Regulator Setting 6" W.C. 10" W.C. 6" W.C. 10" W.C.
Inlet Gas Pressure*
(inches of water)
Heater Weight 13 lbs 13 lbs 14 lbs 14 lbs
Shipping Weight 15.7 lbs 15.7 lbs 16.7 lbs 16.7 lbs
Heater Dimensions (HxWxD) 21.2" × 15.79" × 6.85"
Carton Dimensions (HxWxD) 22.83" × 17.95" × 8.23"
Note: Dimensions listed are outer most points on the heater (includes control knobs and grill).
* For purposes of input adjustment.
Max 10.5" Max 14" Max 10.5" Max 14"
Min 7" Min 11" Min 7" Min 11"
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200314-01D4
PRODUCT IDENTIFICATION
Ignitor Button
Control Knob
Grill
Burner
Front Panel
Heater Cabinet
Figure 1 - Vent-Free Gas Heater
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:
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 a piezo ignitor.
this system requires no matches, batteries, or
other sources to light heater.
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.
THERMOSTATIC CONTROL
(Thermostat Models Only)
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.
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5200314-01D
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.
25 West 43rd Street
New York, NY 10036
National Fire Protection Association, Inc.
1 Batterymarch Park
Quincy, MA 02269-9101
UNPACKING
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 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.
1. Remove heater from carton.
2. Remove all protective packaging applied
to heater for shipping
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. In most applications,
the water vapor enhances the low humidity
atmosphere experienced during cold weather.
AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall
not be installed in a conned
space or unusually tight construction unless provisions are provid-
ed 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.
3. Check heater for any shipping damage. If
heater is damaged, promptly inform dealer
where you bought heater.
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.
Today’s homes are built more energy efcient
than ever. New materials, increased insulation
and new construction methods help reduce
heat loss in homes. Home owners weather
strip and caulk around windows and doors
to keep the cold air out and the warm air in.
During heating months, home owners want
their homes as airtight as possible.
While it is good to make your home energy
efcient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning appliances need fresh air for proper combustion
and ventilation.
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200314-01D6
AIR FOR COMBUSTION AND VENTILATION
Ventilation
Grills into
Exhaust fans, replaces, clothes dryers and fuel burning appliances draw air from the house
to operate. You must provide adequate fresh air for these appliances. This will insure proper
venting of vented fuel-burning appliances.
WARNING: This heater shall not be installed in a room or space
unless the required volume of indoor combustion air is provided by
the method described in the National Fuel Gas Code, ANSI Z223.1/
NFPA 54, the International Fuel Gas Code, or applicable local codes.
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
Ventilation Air From Inside 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" of the
ceiling and one within 12" of the oor on the
wall connecting the two spaces (see options
1 and 2, Figure 2). You can also remove 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 ventilation
grills or ducts.
12"
Adjoining
Room,
Option 1
Or
Remove
Door into
Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two permanent openings: one within 12" of the ceiling
and one within 12" 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.
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.
Ventilated
Attic
To Attic
Outlet
Air
Outlet
Air
12"
Figure 2 - Ventilation Air from Inside
Building
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To
Crawl
Inlet
Air
Inlet Air
Ventilated
Crawl Space
Space
Figure 3 - Ventilation Air from Outdoors
7200314-01D
INSTALLATION
2" Minimum to Top Surface of Carpeting,
FLOOR
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: When installing
heater in a home garage
• heater pilot and burner must
be at least 18" above oor
• locate heater where moving
vehicle will not hit it
WARNING: A qualied ser-
vice person must install heater.
Follow all local codes.
WARNING: Never install the
heater
• over 6,000 Btu/Hr in a bathroom.
Do not install heaters over
10,000 Btu/Hr in a bedroom.
• in a recreational vehicle
• where curtains, furniture,
clothing, or other ammable
objects are less than 36" 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
6 and 7.
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
WARNING: Maintain the
minimum clearances shown
in Figure 4. If you can, provide
greater clearances from oor,
ceiling, and joining wall.
CEILING
36"
Minimum
8"
Minimum
From
Sides of
Heater
Left
Side
Right
Side
Tile or Other Combustible Material
Figure 4 - Mounting Clearances as
Viewed From Front of Heater
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200314-01D8
INSTALLATION
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.
When installing the appliance directly on carpeting, tile or other combustible material other
than wood ooring, the appliance shall be
installed on a metal or wood panel extended
the full width and depth of the appliance.
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 5).
Screw
Front
Panel
Figure 5 - Removing Front Panel Of
Heater
FASTENING HEATER TO WALL
Mounting Bracket
The mounting bracket is located on back panel
of heater. It has been taped there for shipping.
Remove mounting bracket from back panel.
Methods For Attaching Mounting
Use only the last hole on each end of mounting bracket to attach bracket to wall. Attach
mounting bracket to a wall only in one of two
ways:
1. Attaching to wall stud: This method pro-
vides the strongest hold. Insert mounting
screws through mounting bracket and into
wall studs.
2. Attaching to wall anchor: This method
allows you to attach mounting bracket to
hollow walls (wall areas between studs)
or to solid walls (concrete or masonry).
Decide which method better suits your needs.
Either method will provide a secure hold for
the mounting bracket.
1. Tape mounting bracket to wall where
heater will be located. Make sure mounting bracket is level.
Bracket To Wall
Marking Screw Locations
WARNING: Maintain minimum
clearances shown in Figure 4,
page 8. If you can, provide greater
clearances from oor and joining wall.
2. Mark screw locations on wall (see Figure
6). 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.
Adjoining Wall
7 3/4"
Min.
Only Insert Mounting
Screws Through Last
Hole On Each End
12
1
/4"
16"
Min.
Combustible Tile Carpeting or Other Material
Figure 6 - Mounting Bracket Clearances
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Non-combustible Flooring or Top of
9200314-01D
INSTALLATION
Side View
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. Place mounting bracket onto wall. Line
up last hole on each end of bracket with
holes drilled in wall.
3. Insert mounting screws through bracket
and into wall studs.
4. Tighten screws until mounting bracket is
rmly fastened to wall studs.
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" drill bit. For solid walls (concrete or
masonry), drill at least 1" deep.
2. Fold wall anchor as shown in Figure 7.
3. Insert wall anchor (wings rst) into hole.
Tap anchor ush to wall.
4. For thin walls (1/2" or less), insert red key
into wall anchor. Push red key to “pop”
open anchor wings (see Figure 8).
IMPORTANT: Do not hammer anchor key! For
thick walls (over 1/2" thick) or solid walls, do
not pop open wings.
5. Place mounting bracket onto wall. Line up
last hole on each end of bracket with wall
anchors.
6. Insert mounting screws through bracket
and into wall anchors.
7. Tighten screws until mounting bracket is
rmly fastened to wall.
Placing Heater On Mounting
Bracket
1. Locate two horizontal slots on back panel
of heater (see Figure 9).
2. Place heater onto mounting bracket. Slide
horizontal slots onto stand-out tabs on
mounting bracket.
Horizontal Slots
StandOut
Tab
Mounting Bracket (attached to wall)
Figure 9 - Mounting Heater Onto
Mounting Bracket
Installing Wall Spacers
1. Place heater on wall mounting bracket.
2. Mark screw locations on wall.
3. Remove heater from mounting bracket.
4. If installing bottom mounting screws into
hollow or solid wall, install wall anchors.
Front View
Wall
Figure 7 - Folding Anchor
Figure 8 - Popping Open Anchor Wings
For Thin Walls
Heater
Figure 10 - Installing Bottom Mounting
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Spacer
Screws
200314-01D10
INSTALLATION
Follow steps 1 through 4 under Attaching
To Wall Anchor Method, page 10. If install-
ing bottom mounting screw into wall stud,
drill holes at marked locations using 9/64"
drill bit.
5. Replace heater onto mounting bracket.
6. Place spacers between bottom mounting
holes and wall anchor or drilled hole.
7. Hold spacer in place with one hand. With
other hand, insert mounting screw though
CONNECTING TO GAS SUPPLY
bottom mounting hole and spacer. Place
tip of screw in opening of wall anchor or
drilled hole.
8. Tighten both screws until heater is rmly
secured to wall. Do not over tighten.
Note: Do not replace front panel at this time.
Replace front panel after making gas connections and checking for leaks.
WARNING: A qualied service technician 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.
WARNING: For natural gas,
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. Check
your local codes. Use pipe of
1/2" diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
CAUTION: For natural gas,
check your gas line pressure
before connecting heater to gas
line. Gas line pressure must be
no greater than 10.5" of water. If
gas line pressure is higher, heater
regulator damage could occur.
CAUTION: For propane gas,
Never connect heater directly
to the gas supply. This heater
requires an external regulator
(not supplied). Install the external regulator between the heater
and gas supply. Gas supplier
provides external regulator for
natural gas. The installer provides the external regulator for
propane gas.
CAUTION: Avoid damage to
regulator. Hold gas regulator
with wrench when connecting
into gas piping and/or ttings.
CAUTION: Use pipe joint
sealant that is resistant to gas
(Propane or Natural Gas).
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11200314-01D
INSTALLATION
Before installing heater, make sure you have
the items listed below:
• piping (check local codes)
• sealant (resistant to natural gas and propane 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" NPT tap is an acceptable alternative to test gauge connection. Purchase
the optional CSA design certied equipment
shutoff valve from your dealer.
Typical Inlet Pipe Diameters
Use 3/8" black iron pipe or greater. Installation must include an equipment shutoff valve,
union, and plugged 1/8" NPT tap. Locate
NPT tap within reach for test gauge hook up.
NPT tap must be upstream from heater (see
Figure 11).
IMPORTANT: Install an equipment shutoff
valve in an accessible location. The equipment shutoff valve is for turning on or shutting
off the gas to the appliance.
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" 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 12. Pointing the vent down
protects it from freezing rain or sleet.
Install sediment trap in supply line as shown
in Figure 11. 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.
Ground
Joint Union
Tee Joint
Reducer
Test Gauge
Connection*
Sediment
Trap
* Purchase the optional CSA design-certied equipment
shutoff valve from your dealer.
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Tee Joint
Pipe Nipple
Gap
Figure 11 - Gas Connection
3/8" NPT
Pipe Nipple
Equipment
Shutoff Valve
Natural Gas
From Gas Meter
(7" W.C.** to 10.5"
W.C. Pressure)
Propane
From External
Regulator (11"
W.C.** to 14" W.C.
3" Minimum
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Pressure)
External
Propane
Supply Tank
Figure 12 - External Regulator
with Vent Pointing Down
Regulator with
Vent Pointing
Down
200314-01D12
INSTALLATION
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
ame to check for a leak. Apply a
noncorrosive leak detection uid
to all joints. If bubbles form, there
is a leak. Correct all leaks at once.
PRESSURE TESTING GAS SUPPLY
Test Pressures In Excess Of 1/2 PSIG
1. Disconnect heater with its appliance main
gas valve (control valve) and equipment
shutoff valve from gas supply piping system. Pressures in excess of 1/2 PSIG will
damage heater regulator.
2. Cap off open end of gas pipe where equip-
ment shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane supply tank valve for
propane gas or opening main gas valve
located on or near gas meter for natural
gas or using compressed air.
4. Check all joints of gas supply piping sys-
tem. Apply a noncorrosive leak detection
uid to all joints. If bubbles form, there
may be a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected
ttings for leaks.
Equipment
Shutoff Valve
Figure 13 - Equipment Shutoff Valve
Test Pressures Equal To or Less Than
1. Close equipment shutoff valve (see Fig-
ure 13).
2. Pressurize supply piping system by either
opening propane supply tank valve for
propane gas or opening main gas valve
located on or near gas meter for natural
gas or using compressed air.
PIPING SYSTEM
(3.5 kPa)
Open
Closed
1/2 PSIG (3.5 kPa)
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3. Check all joints from gas meter to equipment shutoff valve for natural gas or
propane supply to equipment shutoff valve
for propane (see Figure 14 or 15). Apply
a noncorrosive leak detection uid to all
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Gas Valve
Gas Meter
(Regulator
supplied by
gas company)
Equipment Shutoff Valve
Figure 14 - Natural Gas Supply
Gas Valve
Propane
Supply Tank
Equipment
Shutoff Valve
Figure 15 - Propane Gas Supply
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 13).
2. Open gas supply tank valve.
3. Make sure control knob of heater is in the
OFF position.
4. Check all joints from equipment shutoff
valve to control valve (see Figure 14 or 15).
Apply a noncorrosive leak detection uid to
all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Lighting Instructions,
page 14 or 15). Check all other internal
joints for leaks.
7. Turn off heater (see To Turn Off Gas Ap-
pliance, page 16).
8. Replace front panel.
13200314-01D
OPERATION
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
a re 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 oor because some gas is
heavier than air and will settle on the
oor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
MANUAL CONTROL MODEL
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information above.
2. Make sure equipment shutoff valve is fully
open.
3. Push in gas control knob slightly and turn
clockwise to the OFF position.
Note: Knob cannot be turned from PILOT to
OFF unless knob is pushed in slightly. Do
not force.
4. Wait ve (5) minutes to clear out any gas.
Then smell for gas, including near the
oor. If you smell gas, STOP! Follow "B"
in the safety information above. If you do
not smell gas, go to the next step.
5. Push in gas control knob slightly and turn
counterclockwise to "PILOT/IGN"
and press for ve (5) seconds
Note: The rst time that the heater is oper-
ated after connecting the gas supply, the
control knob should be pressed for about
thirty (30) seconds. This will allow air to
bleed from the gas system.
6. With control knob pressed in, push down
and release the ignitor button. This will
light pilot. The pilot is attached to the front
of burner. If needed, keep pressing ignitor
button until pilot lights.
Note: If pilot does not stay lit, refer to
Troubleshooting, pages 19 though 21.
• Do not touch any electric 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.
C. Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn by
hand, don’t try to repair it, call a qualied
service technician. Force or attempted
repair may result in a re or explosion.
D. Do not use this appliance if any part
has been under water. Immediately call
a qualied service technician to inspect
the appliance and to replace any part of
the control system and any gas control
which has been under water.
Also contact a qualied service technician
or gas supplier for repairs. Until repairs
are made, light pilot with match. To light
pilot with match, see Manual Lighting
Procedure.
7. Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob. If control
knob does not pop up when released,
contact a qualied service technician or
gas supplier for repairs.
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.
Ignitor Button
IGNITOR
Control Knob
ON
PILOT/ IGN
OFF
Figure 16 - Control Knob in the OFF
Position
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200314-01D14
OPERATION
8. Partially press down control knob and
turn counterclockwise . Release
the downward pressure on the knob while
continuing to turn until the knob locks at
the locked ON position. The main burner
should light. Do not operate between
locked positions.
Thermocouple
Ignitor Electrode
Pilot Burner
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
THERMOSTAT MODEL
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information on
page 14.
2. Make sure equipment shutoff valve is fully
open.
3. Turn control knob clockwise to the
OFF position.
4. Wait ve (5) minutes to clear out any air.
Then smell for gas, including near the
oor. If you smell gas, STOP! Follow "B"
in the safety information, page 16. If you
do not smell gas, go to the next step.
5. Turn control knob counterclockwise
to the PILOT position. Press in control
knob for ve (5) seconds (see Figure 17).
Note: The rst time that the heater is oper-
ated after connecting the gas supply,the
control knob should be pressed for about
thirty (30) seconds. This will allow air to
bleed from the gas system. If pilot does not
stay lit, refer to Troubleshooting, pages 19
though 21. Also contact a qualied service
technician or gas supplier for repairs. Until
repairs are made, light pilot with match.
6. With control knob pressed in, push
down and release ignitor button. This
will light pilot. The pilot is attached to
the front of burner. If needed, keep
pressing ignitor button until pilot lights.
Note: If pilot does not stay lit, refer to
Troubleshooting, pages 19 though 21.
Also contact a qualied service technician
or gas supplier for repairs. Until repairs
are made, light pilot with match. To light
pilot with match, see Manual Lighting
Procedure.
7. Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob. If control
www.usaprocom.com
Figure 17 - Pilot
knob does not pop up when released,
contact a qualied service technician or
gas supplier for repairs.
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.
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
Ignitor Button
IGNITOR
Figure 18 - Control Knob in the OFF
Thermocouple
Control Knob
PILOT
OFF
HI
Position
Ignitor Electrode
Pilot Burner
Figure 19 - Pilot
LO
15200314-01D
OPERATION
THERMOSTAT CONTROL OPERATION
The thermostatic control used on these models differ from standard thermostats. Standard
thermostats simply turn the burner on and off.
The thermostat used on this heater senses
the room temperature. At times the room may
exceed the set temperature. If so, the burner
will shut off. The burner will cycle back on
when room temperature drops below the set
temperature. The control knob can be set to
any comfort level between HI and LO.
ALL MODELS
TO TURN OFF GAS TO APPLIANCE
Shutting Off Heater
Turn control knob clockwise to the
OFF position.
MANUAL LIGHTING PROCEDURE
1. Remove front panel.
2. Follow steps 1 through 5 under Lighting
Instructions, page 14 or 15.
3. With control knob pressed in, strike match.
Hold match to pilot until pilot lights.
Note: The thermostat sensing bulb measures
the temperature of air near the heater cabinet.
This may not always agree with room temperature (depending on housing construction,
installation location, room size, open air temperatures, etc.) Frequent use of your heater
will let you determine your own comfort levels.
Shutting Off Burner Only
(pilot stays lit)
Turn control knob clockwise to the
PILOT position.
4. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds,
release control knob. Follow step 8 under
Lighting Instructions, page 14 or 15.
5. Replace front panel.
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200314-01D16
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