Procom MN100TPA-B Quick start guide

VENT-FREE GAS
SPACE HEATER
OWNER’S OPERATION AND
INSTALLATION MANUAL
INFRARED MODELS
MN100TPA-B
ML100TPA-B
Questions, problems, missing parts? Before returning to your retailer, call
our customer service department at 1-866-573-0674, 8:00 am - 4:30 pm CST,
Monday through Friday or email [e-mail]
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 quali-
ed installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
PFS
®
US
F09-022
CSA/ANS
Z21.11.2-2019
UNVENTED ROOM
HEATERS

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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: FIRE, EXPLOSION, AND ASPHYXIATION
HAZARD
Improper adjustment, alternation, service, maintenance,
or installation or this heater or its controls can cause
death or serious injury. Read and follow instructions
and precautions in User's Information Manual provided
with this heater.
This appliance may be installed in an aftermarket,* per-
manently located, manufactured (mobile) home, where
not prohibited by local codes.
This appliance is only for use with the type of gas indi-
cated 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.
SAVE THIS BOOK
TABLE OF CONTENTS
Safety ........................................................ 3
Specications ............................................ 4
Product Identication................................. 5
Qualied 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................................................. 15
Inspecting Burners................................... 17
Care And Maintenance............................ 18
Troubleshooting....................................... 19
Parts ........................................................ 22
Replacement Parts.................................. 23
Accessories ............................................. 23
Service Hints ........................................... 23
Technical Service..................................... 23
Warranty .................................................. 24

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SAFETY
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op-
erate, 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 qualied 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.
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 af-
fected by carbon monoxide than others. These
include pregnant women, people with heart or
lung disease or anemia, those under the inu-
ence of alcohol and those at high altitudes.
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: Do not use any
accessories not approved for
use with this heater.
WARNING: Carefully super-
vise young children when they
are in the room with the heater.
The re screen or guard
designed for this unvented ap-
pliance must be installed prior
to operation.
WARNING: Due to high tem-
peratures, the appliance should
be located out of tra󰀩c 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 cloth-
ing ignition. Heater will remain
hot for a time after shuto󰀨. 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.
WARNING: Any change to
this heater or its controls can
be dangerous.

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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 shuto󰀨
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 o󰀨, 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 o󰀨, do not relight until you
have provided fresh, outside air. If heater
keeps shutting o󰀨, have it serviced.
6. Do not run heater:
• Where ammable liquids or vapors are
used or stored.
• Under dusty conditions.
SAFETY
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 o󰀨.
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 qualied
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 o󰀨 heater and let cool before servic-
ing. Only a qualied 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.
MODEL MN100TPA-B ML100TPA-B
Ignition Piezo Piezo
Control Type Thermostat Thermostat
Gas Type Natural Propane
BTU/Hr (available) 10,000 10,000
Pressure Regulator Setting 6" W.C. 10" W.C.
Inlet Gas Pressure*
(inches of water)
Max 10.5" Max 14"
Min 7" Min 11"
Heater Weight 14 lbs 14 lbs
Shipping Weight 16.7 lbs 16.7 lbs
Heater Dimensions (HxWxD) 21.2" × 15.79" × 6.85"
Carton Dimensions (HxWxD) 22.83" × 17.95" × 8.23"
SPECIFICATIONS
Note: Dimensions listed are outer most points on the heater (includes control knobs and grill).
* For purposes of input adjustment.

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QUALIFIED INSTALLING AGENCY
Only a qualied agency should install and re-
place gas piping, gas utilization equipment or
accessories. Repair and equipment servicing
should allways be done by a qualied agency.
The term “qualied agency” means any in-
dividual, 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 precau-
tions required; and that has complied with
all the requirement of the authority having
jurisdiction.
PRODUCT FEATURES
SAFETY PILOT
This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shuto󰀨 system. The
ODS/pilot shuts o󰀨 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.
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.
PRODUCT IDENTIFICATION
Figure 1 - Vent-Free Gas Heater
Control Knob
Ignitor
Button
Front Panel
Grill
Burners
Heater Cabinet

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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
State of Massachusetts: The installation
must be made by a licensed plumber or
gas tter in the Commonwealth of Mas-
sachusetts.
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.
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.
Water vapor is a by-product of gas combustion.
An unvented room heater produces approxi-
mately 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.
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 dehu-
midier 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.
AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall
not be installed in a conned
spaceor unusuallytight construc-
tion unless provisions are provid-
ed for adequate combustion and
ventilation air. Read the following
instructionsto insureproper fresh
air for this and other fuel-burning
appliances in your home.
WATER VAPOR: A BY-PRODUCT OF
UNVENTED ROOM HEATERS
Today’s homes are built more energy e󰀩cient
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
e󰀩cient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.

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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, combus-
tion 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
AIR FOR COMBUSTION AND VENTILATION
Figure 2 - Ventilation Air from Inside
Building
Figure 3 - Ventilation Air from Outdoors
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent 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 unconned space. The combined
spaces must have enough fresh air to supply
all appliances in both spaces.
Ventilation Air From Inside Building
This fresh air would come from an adjoining
unconned space. When ventilating to an
adjoining unconned 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.
Or
Remove
Door into
Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
12"
12"
Ventilation
Grills into
Adjoining
Room,
Option 1
Outlet
Air
Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic

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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 pri-
mary 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 qualied ser-
vice person must install heater.
Follow all local codes.
WARNING: Never install the
heater
• in high tra󰀩c areas
• in windy or drafty areas
• 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
Do not install heaters over 10,000
Btu/Hr in a bedroom.
Do not install heaters over
6,000Btu/Hr in a bathroom.
Figure 4 - Mounting Clearances as
Viewed From Front of Heater
CAUTION: This heater cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as to-
bacco 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 benecial, 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 heat-
er. 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
2" Minimum to Top Surface of Carpeting,
Tile or Other Combustible Material
FLOOR

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INSTALLATION
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.
Figure 5 - Removing Front Panel Of
Heater
LOCATING HEATER
This heater is designed to be mounted on a
wall. For convenience and e󰀩ciency, 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 car-
peting, 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).
Methods For Attaching Mounting
Bracket To Wall
Use only the last hole on each end of mount-
ing 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.
Marking Screw Locations
1. Tape mounting bracket to wall where
heater will be located. Make sure mount-
ing bracket is level.
WARNING: Maintainminimum
clearances shown in Figure 4,
page 8. If you can, provide greater
clearances from oor and join-
ing 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.
Screw
Front
Panel
Figure 6 - Mounting Bracket Clearances
7 3/4"
Min. 12 1/4"
16"
Min.
Only Insert Mounting
Screws Through Last
Hole On Each End
Adjoining Wall
Non-combustible Flooring or Top of
Combustible Tile Carpeting or Other Material

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INSTALLATION
Figure 10 - Installing Bottom Mounting
Screws
Figure 7 - Folding Anchor
Figure 8 - Popping Open Anchor Wings
For Thin Walls
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.
Figure 9 - Mounting Heater Onto
Mounting Bracket
Attaching Mounting Bracket To
Wall
Note: Wall anchors, mounting screws, and
spacers are in hardware package. The hard-
ware 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.
Mounting Bracket (attached to back)
Horizontal Slots
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.
Side View
Front View
Wall
Spacer
Heater

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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
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 connec-
tions and checking for leaks.
Figure 11 - Installing Base Feet
INSTALLATION OF BASE STAND
(If Used)
Base Feet
Sheet Metal Screws
Before installing heater to base, please make
sure you have a hardware packet that con-
tains the following items:
2 - Base Feet
4 - Sheet Metal Screws
1. Carefully lay heater on its back on a table
with the bottom of the heater extending
outside the table edge.
2. Attach base feet to heater using sheet
metal screws.

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CONNECTING TO GAS SUPPLY
WARNING: A qualied ser-
vice 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. Inter-
nally 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 exter-
nal regulator between the heater
and gas supply. Gas supplier
provides external regulator for
natural gas. The installer pro-
vides 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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INSTALLATION
Figure 12 - Gas Connection
* Purchase the optional CSA design-certied equipment
shuto󰀨 valve from your dealer.
Figure 13- External Regulator
with Vent Pointing Down
External
Regulator with
Vent Pointing
Down
Propane
Supply Tank
Equipment
Shuto󰀨 Valve
Ground
Joint Union 3/8" NPT
Pipe Nipple
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test Gauge
Connection*
Sediment
Trap
Tee Joint
Pipe Nipple
Gap
3" Minimum
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.
Pressure)

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INSTALLATION
Figure 13 - Equipment Shuto Valve
Open
Closed
Equipment
Shuto󰀨 Valve
Figure 15 - Propane Gas Supply
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
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect heater with its appliance main
gas valve (control valve) and equipment
shuto󰀨 valve from gas supply piping sys-
tem. Pressures in excess of 1/2 PSIG will
damage heater regulator.
2. Cap o󰀨 open end of gas pipe where equip-
ment shuto󰀨 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 shuto󰀨
valve to gas supply. Check reconnected
ttings for leaks.
3. Check all joints from gas meter to equip-
ment shutoff valve for natural gas or
propane supply to equipment shuto󰀨 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.
Figure 14 - Natural Gas Supply
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shuto󰀨 valve (see Fig-
ure 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 shuto󰀨
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 15 or 16). Check all other internal
joints for leaks.
7. Turn o󰀨 heater (see To Turn O Gas Ap-
pliance, page 16).
8. Replace front panel.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shuto󰀨 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.
LP REGULATOR INSTALL 2
Equipment
Shuto󰀨 Valve
Propane
Supply Tank
Gas Meter
Gas Valve
Equipment
Shuto󰀨 Valve

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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, per-
sonal 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.
• 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 qualied
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 qualied service technician to inspect
the appliance and to replace any part of
the control system and any gas control
which has been under water.
THERMOSTAT MODEL
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information on
page 15.
2. Make sure equipment shuto󰀨 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 16).
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 qualied 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 qualied 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 qualied service technician or
gas supplier for repairs.
Figure 16 - Control Knob in the OFF
Position
Note: If pilot goes out, repeat steps 3
through 7. This heater has a safety inter-
lock system. Wait one (1) minute before
lighting pilot again.
LO
OFF
HI
PILOT
IGNITOR
Ignitor Button Control Knob

www.usaprocom.com 200049-02A16
Figure 17 - Pilot
OPERATION
Pilot Burner
Ignitor Electrode
Thermocouple
The thermostatic control used on this model
di󰀨ers from standard thermostats. You set
standard thermostats to a specic tempera-
ture such as 72° F. The control of this heater
establishes a "comfort level". In order for the
thermostat to operate e󰀨ectively, the heater
should be the main source of heat in the
room. Follow the instructions for lighting the
heater on page 16. When the room reaches
the desired comfort level, rotate the control
knob clockwise slowly until the main burner
turns o󰀨 and the pilot remains on (this position
on the knob will change depending on room
temperature).
THERMOSTAT CONTROL OPERATION
Turn the knob counter-clockwise slowly until
the main burner reignites. Note the position
of the control knob by the numbers printed
on the knob. Leave the knob in this position.
As the room temperature increases, the main
burner will turn o󰀨 and the pilot will remain on.
When the room temperature cools, the heat-
er's main burner will come back on. If left at
this set point the thermostat will turn the main
burner on or o󰀨 as needed to maintain the
room temperature at the desired comfort level.
Note: The thermostat sensing bulb reacts
to the temperature depending on house's
construction.
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 shuto󰀨 valve.
TO TURN OFF GAS TO APPLIANCE
Shutting Off Heater
Turn control knob clockwise to the OFF position.
Shutting Off Burner Only
(pilot stays lit)
Turn control knob clockwise to the PILOT position.
MANUAL LIGHTING PROCEDURE
1. Remove front panel.
2. Follow steps 1 through 5 under Lighting Instructions, page 15 or 16.
3. With control knob pressed in, strike match. Hold match to pilot until pilot lights.
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 15 or 1.
5. Replace front panel.

www.usaprocom.com 17200049-02A
Figure 18 shows a correct pilot ame pattern.
Figure 19 shows an incorrect pilot ame pat-
tern. The incorrect pilot ame is not touching
the thermocouple. This will cause the ther-
mocouple to cool, which shuts the heater o󰀨.
Figure 18 - Correct Pilot Flame Pattern Figure 19 - Incorrect Pilot Flame Pattern
IMPORTANT: Owner’s should check pilot ame pattern and burner ame pattern often.
Incorrect ame patterns indicate the need for cleaning (see Care and Maintenance,
page 18) or service.
WARNING: Only a qualied service person should service and
repair heater. This includes maintenance requiring replacement or
alteration of components.
PILOT FLAME PATTERN
If pilot ame pattern is incorrect, as shown
in Figure 19
• turn heater o󰀨 (see To Turn O Gas to Ap-
pliance, page 16)
• see Troubleshooting pages 19 through 21.
BURNER FLAME PATTERN
Figure 20 shows a correct burner ame pat-
tern. Figure 21 shows an incorrect burner
ame pattern. The incorrect burner ame
pattern shows yellow tipping of the ame. It
also shows the ame higher than 1/2 the heat
shield height.
If burner ame pattern is incorrect, as shown
in Figure 21
• turn heater o󰀨 (see To Turn O Gas to Ap-
pliance, page 16)
• see Troubleshooting pages 18 through 20.
INSPECTING BURNERS
Figure 20 - Correct Burner Flame Pattern Figure 21 - Incorrect Burner Flame
Pattern
WARNING: If yellow tipping
occurs, your heater could pro-
duce increased levels of carbon
monoxide. If the burner ame
pattern shows yellow tipping,
follow instructions below.
Notice: Do not mistake orange ames with
yellow tipping. Dirt or other ne particles
enter the heater and burn causing brief
patches of orange ame.

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CARE AND MAINTENANCE
WARNING: Turn o󰀨 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 qualied service techni-
cian. 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.
MAIN BURNER
We recommend that you clean the unit ev-
ery 2,500 hours of operation or every three
months. We also recommend that you keep
the burner tube and pilot assembly clean
and free of dust and dirt. To clean these
parts we recommend using compressed air
no greater than 30 PSl. Your local computer
store, hardware store, or home center may
carry compressed air in a can. You can use
a vacuum cleaner in the blow position. If us-
ing compressed air in a can, please follow
the directions on the can. If you don’t follow
Figure 22 - Pilot Inlet Air Hole
directions on the can, you could damage the
pilot assembly.
1. Shut o󰀨 the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
2. Remove four screws securing front panel.
3. Pull front panel forward.
4. Inspect burner and pilot for dust and dirt.
5. Blow air through the ports/slots and holes
in the burner.
6. Replace front panel using screws re-
moved in step 2.
ODS/PILOT
Periodically inspect all burner ame holes with
the heater running. All slotted burner ame
holes should be open with yellow ame pres-
ent. All round burner ame holes should be
open with a small blue ame present. Some
burner ame holes may become blocked by
debris or rust, with no ame present. If so,
turn o󰀨 the heater and let it cool, and remove
blockage or replace burner. Blocked burner
ame holes will create soot.
BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE
Use a vacuum cleaner, pressurized air, or a
small, soft bristled brush to clean.
A yellow tip on the pilot ame indicates dust
and dirt in the pilot assembly. There is a small
pilot air inlet hole about 2" from where the
pilot ame comes out of the pilot assembly
(see Figure 22). With the unit o󰀨, lightly blow
air through the air inlet hole. You may blow
through a drinking straw if compressed air is
not available.
CABINET
Air Passageways
Use a vacuum cleaner or pressurized air to
clean.
Exterior
• Use a soft cloth dampened with a mild soap
and water mixture.
• Wipe the cabinet to remove dust.
Pilot Air Inlet Hole
Pilot Burner
Ignitor Electrode
Thermocouple

www.usaprocom.com 19200049-02A
TROUBLESHOOTING
WARNING: If you smell gas:
• Shut o󰀨 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. Fol-
low the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the re department.
WARNING: Only a qualied service technician should service and
repair heater. Make sure that power is turned o󰀨 before proceeding.
Turn o󰀨 and let cool before servicing.
CAUTION: Never use a wire, needle, or similar object to clean
ODS/pilot. This can damage ODS/pilot unit.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning sup-
plies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc.,
create fumes. These fumes may mix with combustion air and create odors.
Note: All troubleshooting items are listed in order of operation.
Problem Possible Cause Corrective Action
When ignitor button is
pressed in, there is no
spark at ODS/pilot.
1. Ignitor electrode is posi-
tioned wrong. Ignitor elec-
trode is broken.
2. Ignitor electrode is not con-
nected to ignitor cable.
3. Ignitor cable is pinched or
wet.
4 Broken ignitor cable.
5. Bad piezo ignitor.
1. Replace pilot assembly.
2. Replace ignitor cable.
3. Free ignitor cable if pinched
by any metal or tubing. Keep
ignitor cable dry.
4. Replace ignitor cable.
5. Replace piezo ignitor.
When ignitor button is
pressed in there is a
spark at ODS/pilot but
no ignition.
1. Gas supply is turned o󰀨 or
equipment shuto󰀨 valve is
closed.
2. Control knob not fully
pressed in while pressing
ignitor button.
3. Air in gas lines when in-
stalled.
4. ODS / pilot is clogged.
5. Incorrect inlet gas pressure
or inlet regulator is damaged.
6. Control knob not in PILOT
position.
7. Depleted gas supply (pro-
pane).
1. Turn on gas supply or open
equipment shuto󰀨 valve.
2. Fully press in control knob
while pressing ignitor button.
3. Continue holding down con-
trol knob. Repeat igniting op-
eration until air is removed.
4. Clean ODS/pilot (see Care
and Maintenance, page 18) or
replace ODS/pilot assembly.
5. Check inlet gas pressure or
replace inlet gas regulator.
6. Turn control knob to PILOT
position.
7. Contact local propane gas
company.

www.usaprocom.com 200049-02A20
Problem Possible Cause Corrective Action
ODS/pilot lights but ame
goes out when control
knob is released.
1. Control knob is not fully
pressed in.
2. Control knob is not pressed
in long enough.
3. Equipment shuto󰀨 valve is
not fully open.
4. Thermocouple connection is
loose at control valve.
5. Pilot flame not touching
thermocouple, which allows
thermocouple to cool, caus-
ing pilot ame to go out. This
problem could be caused by
one or both of the following:
A) Low gas pressure
B) Dirty or partially clogged
ODS/pilot
6. Thermocouple damaged.
7. Control valve damaged.
1. Press in control knob fully.
2. After ODS/pilot lights, keep
control knob pressed in 30
seconds.
3. Fully open equipment shuto󰀨
valve.
4. Hand tighten until snug, and
then tighten 1/4 turn more.
5. A) Contact local natural or
propane gas company
B) Clean ODS/pilot (see
Care and Maintenance,
page 18) or replace ODS/
pilot assembly
6. Replace thermocouple
7. Replace control valve.
Burner(s) does not light
after ODS/pilot is lit.
1. Burner orice is clogged.
2. Burner orice diameter is too
small.
3. Inlet gas pressure is too low.
1. Clean burner orifice (see
Care and Maintenance,
page 18) or replace burner
orice.
2. Replace burner orice.
3. Contact local gas supplier.
Delayed ignition of
burner(s).
1. Manifold pressure is too low.
2. Burner orice is clogged.
1. Contact local gas supplier.
2. Clean burner (see Care and
Maintenance, page 18) or
replace burner orice.
Burner backring during
combustion.
1. Burner orice is clogged or
damaged.
2. Burner is damaged.
3. Gas regulator is damaged.
1. Clean burner orifice (see
Care and Maintenance,
page 18) or replace burner
orice.
2. Replace burner.
3. Replace gas regulator.
Burner plaque(s) does
not glow.
1. Plaque is damaged.
2. Inlet gas pressure is too low.
3. Control knob set between
locked positions.
1. Replace burner.
2. Contact local gas company.
3. Turn control knob until it
locks at desired setting.
High yellow ame during
burner combustion
1. Not enough air.
2. Gas regulator is defective.
3. Inlet gas pressure is too low.
1. Check burner for dirt and
debris. If found, clean burner
(see Care and Maintenance,
page 18).
2. Replace gas regulator.
3. Contact local gas supplier.
TROUBLESHOOTING