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BLUE FLAME VENT-FREE
PROPANE/PL GAS HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
Do not store, or use gasoline or other ammable
vapors 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.
Im m ediatel y 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
qua l i fied in s ta ller , se r v ice ag e n cy or gas
ML100HBAHR & ML100TBAHR
supplier.
Table of Contents
Important Safety Information....................................2
Product Features.....................................................3
Air For Combustion& Ventilation .................................4
Installation................................................................6
Operating Your Heater............................................13
Care & Maintenance...............................................14
Troubleshooting......................................................15
Specications..........................................................18
Parts List..................................................................20
WARN ING: This is an unvented gasred heater. It uses air (oxygen) fr o m
t h e ro o m in wh i c h it is install ed.
Pr ovisions for ad e quate combustion and
ventilation air must be pr ov i d e d. Re f e r
t o Ai r F or Combustion and Ventilation
section on page 4 of this manual.
WARNING: If the information in this
manual is not followed exactly, a re o r
ex pl os io n m ay r e su lt causing property
damage, personal injury, or loss of life.
WARNING: Improper installation, adjustment, alteration, 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 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 convertible for use with other
gases.
*Aftermarket: Completion of sale, not for purpose of
resale, from the manufacturer.
Installer: Please leave these instructions with
the consumer.
Consumer: Please retain these instructions for
future use.
Questions about installation, operation, or troubleshooting? Before returning to your retailer, contact our
customer service department at (877)-886-5989,
PC-ML062-16HR-1202
IMPORTANT
SAFETY INFORMATION
I M P ORTAN T : Read this
ow ner ’s m anual care fully and
co mp l et e ly be fo r e tr y in g t o
assem b l e , o p e ra te , or serv i c e
this heate r. Impro p e r us e of
this heater can cause serious
injury or death fr o m burns,
f i re , e xp l o si o n , e l e c t r ic a l
sh o c k , and ca r b o n monoxide
poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning.
Early signs of carbon monoxide
poiso ning rese mble the flu with
headaches, dizz iness, 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
ot hers. The se i nclud e pregn ant
women, persons with heart or lung
disease or anemia, those under
the inuence of alcohol, and those
at high altitudes.
Propane/PL: Propane/PL gas is
odorless. An odor-making agent is
added to natural gas. The odor
hePLs you detect a natural gas leak
. However, the odor added to natural
gas can fade. natural gas may be
present even though no odor exists.
Make certain you read and unde r st a nd a l l war n in g s. Ke e p
this manual for reference. It is your
guide to safe and proper operation
of this heater.
WARNING: Do not use any
acces s o r y no t appr o v e d for
use with this heater.
WARNING: Any change to
this heater or its controls can
be dangerous.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.
Due to high temperatures, heater
s h o u l d b e k e p t o u t o f
tr a f f i c an d away fr o m fu r n i t u r e
and draperies.
Sur f ace o f hea t e r b e c ome s
very hot when running heater.
Keep children and adults away
from hot surface to avoid burns
or clothing ignition. Heater will
remain hot for a time after shut
down. Al l ow surf a c e to co o l
before touching.
C a r e fu l l y s u pe r v i s e y o u n g
children when they are in the
same room with heater.
Ma k e sure grill guard is in
place before running heater.
Keep the appliance area clear
an d fr e e fr o m co m bu s ti b le
materi a l s , ga s o l i ne , and ot he r
flammabl e vapo rs and liqu ids.
WARNING
Models ML100HBAHR, ML100TBAHR
are equipped for propane gas. Field
conversion is not permitted.
1. 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.
2. Do not place propane/PL supply
tank(s) inside any structure. Locate
propane/PL 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 you cannot reach your gas
supplier, call the re department.
4. Do not install in a bathroom
5. This heater needs fresh, outside
air ventilation to run properly. This
heater has an Oxygen Depletion
Sensor (ODS) safety shutoff
system.
The ODS shuts down the
heater if not enough fresh air
is available. See Air For
Combustion And Ventilation,
pages 4 through 6
6. Keep all air openings in the
front and bottom of heater
clear and free of debris. This
will insure 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 serviced.
8. Do not operate heater
l where ammable liquids or
vapors are used or stored
l 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 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.
14. Install and use heater with care.
Follow all local ordinances and
codes. In the absence of local
ordinances and codes, refer to
the Standard for Storage and
Handling of Liqueed Petroleum
Gas, ANSI/NFPA 58 Installation
Code, CAN/CGAB149.2. This
instructs on the safe storage and
handling of propane/PL gases.
2
15. This heater may be used in a recreational enclosure or
temporary construction work enclosure with a remote
rellable propane/PL cylinder ONLY when the cylinder is
located outdoors and the heater is used with the hose
(included with this heater). NEVER bring a rellable
propane/PL cylinder indoors. A re or explosion can occur
causing property damage, serious injury or death.
16. Use only the hose and factory preset regulator provided
with the heater, when connecting to portable supply gas
tank. Use only replacement pressure regulators and hose
assemblies specied in this manual.
17. Inspect the hose before each use of the heater. If it is
evident there is excessive abrasion or wear or the hose is
cut, it must be replaced prior to the heater being put into
operation.
18. Use only propane gas set up for vapor withdrawal.
19. This heater can only be used in a recreational or
commercial enclosure with a window or roof vent. This
heater is not for outdoor use
PRODUCT FEATURES
SAFETY DEVICE
A standard requirement for all vent-free room
heaters, this heater has a pilot with an Oxygen
Depletion Sensor(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.
THERMOSTATIC CONTROL ON
THERMOSTAT MODEL
These heaters have a control valve with a
thermostat sensing bulb. This results in the
greatest heater comfort and may result in
lower gas bills.
LOCAL CODES
Install and use heater with care. Follow all local
codes. In the absence of local codes, use the
latest edition of National Fuel Gas Code ANSZ223.1,
also known as NFPA 54*.
*Available from :
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Propane/PL gas and propane/PL tank(s) are to be furnished by the user. The propane/PL cylinder to be used must
be constructed and marked in accordance with the specications for the propane/PL gas cylinders of the U.S.
Department of Transportation (DOT). Use this heater only with a propane/PL vapor withdrawal supply system. See
Chapter 5 of the Standard for Storage and Handling of Liqueed Petroleum Gas, ANSI/NFPA 58 and/or CAN/
CGAB 149.2. Your local library or re department will have this booklet. The amount of propane/PL gas ready for
use from propane/PL tanks varies. Two factors decide this amount:
1. The amount of propane/PL gas in tank(s)
2. The temperature of tank(s)
This heater is designed for use with a 20 or 40 pound rellable propane/PL cylinder when used as a self contained
heating system (with hose and regulator). Larger tanks may be used if installed in a permanent gas supply system.
The propane/PL cylinder used must include a collar to protect the cylinder valve and a listed over-lling prevention
device (OPD).
Propane/PL Supply
Figure1-Vent-Free Propane/PL Gas Heater
State of Massachusetts: The installation must
be made by a licensed plumber or gas tter in the
Commonwealth of Massachusetts.
Sellers of unvented propane or natural gas-red
supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit.
In the state of Massachusetts, unvented propane or
nature gas-red space heaters shall be prohibited in
bedrooms and bathrooms.
UNPACKING
1. Remove heater from carton.
2. Remove all protective packaging applied to
heater for shipment.
3. Check heater for any shipping damage. If heater
is damaged, promptly inform dealer where you
bought heater.
3
FRESH AIR FOR
COMBUSTION AND
VENTILATION
WARN I N G : If the ar e a in
which the heater may be operated
do e s no t m ee t t he r e qu i re d
volume for indoor combustion air,
co m b ustion and ventilati o n air
shall be provided by one of the
methods described in the National
F u e l G a s C o d e , A N S I
Z 2 2 3 . 1 / N F P A 5 4 , t h e
International Fuel Gas Code, or
a p p l i c a b l e l o c a l c o d e s .
PROVIDING ADEQUATE
VENTILATION
All spaces in homes fall into one of
the three following ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 4
through 6 will help you classify
your space and provide adequate
ventilation.
Unusually Tight Construction
The air that leaks around doors
and windows may provide enough
fresh air for combustion and ventilation.
However, in buildings of unusually
tight construction, you must provide
additional fresh air.
Unusually tight construction is
dened as construction where:
a. walls and ceilings exposed to
the outside atmosphere have a
continuous water vapor retarder
with a rating of one perm (6×10
kg per pa-sec-m2) or less with
openings gasketed or sealed and
b. weather stripping has been
added on open able win dows and
doors and
c. caulking or sealants are applied to
areas such as joints around window and door frames, between sole
plates and oors, between wallceiling 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,
pages 5 and 6. If your home does
not meet all of the three criteria
above, see Determining Fresh-Air
Flow for Heater Location, page 4, 5
-11
Conned and
Unconned Space
Conned space is 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 communicating directly
with the space in which the
appliances are installed*, through
openings not furnished wit h
doors, are considered a part of
the unconned space.
This heater shall not be installed in a conned space or
unusually tight construction unless
pr ovisi ons are pr ovide d for
adequate combustion and
ventilation air.
* A d j oi n i n g r o om s a r e
communicating only if there
are doorless passageways or
ventilation grills between them.
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).
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)
Example: 2560 cu. ft. (volume of space)÷50 cu.ft.=51.2 or 51,200(maximum Btu/Hr the space can support)
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
Ga s Co d e , ANSI Z2 2 3 . 1 / NFPA 54 , th e In ternational Fu e l Ga s Co de, or applicabl e lo c a l co des.
4
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater Btu/Hr
Gas water heater* Btu/Hr
Gas furnace Btu/Hr
Vented gas heater Btu/Hr
Gas Fireplace logs Btu/Hr
Other gas appliances* + Btu/Hr
Total = Btu/Hr
*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)
54,000 Btu/Hr(actual amount of Btu/Hr used)
The space in the above example is a conned space because the actual Btu/Hr used is more than the
maximum Btu/Hr the space can support.
You must provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconned
space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From
Inside Building, page 5.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6 .
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconned.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an
unconned space. You will need no additional fresh air ventilation.
Example:
Gas water heater 44,000 Btu/Hr
Vent free heater + 10,000 Btu/Hr
total = 54,000 Btu/Hr
AIR FOR COMBUSTION AND
VENTILATION
Continued
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
NFPA 54/ANS Z223.1. Section 5.3, Air for
Combustion and Ventilation for required size of
ventilation grills or ducts
WARNING: Rework worksheet ,
adding the space of the adjoining
unconned space. The combined spaces
must have enough fresh air to supply all
appliances in both spaces.
Figure 2 -Ventilation Air from Inside Building
5
Figure 3 -Ventilation Air from Outdoors
INSTALLATION
NOTICE: This heater is
intended for use as supplemental
heat. Use this heater along with
your primary heating system.
Do not install this heater as
your primary heat source. If you
have a central heating system,
you may run system’s circulating blower while using heater.
This will help circulate the heat
throughout the house. In the
event of a power outage, you can
use this heater as your primary
heat source.
WARNING: A qualied
service person must install
heater. Follow all local codes.
CHECK GAS TYPE
Us e o nly natur al g as. If yo ur
gas supply is not natural, do
no t instal l heate r. Cal l dealer
wh e re yo u bo ught h e a ter f o r
proper type heater.
Ventilation Air From Outdoors
Pr o vide extr a fresh ai r by usi n g venti lation gril l s or duct s : You mus t pro vi d e t w o p e rm a n en t op e nin g s: o ne
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.
Th ese spa ces inc lude attics and cra w l
spaces. Follow the National Fuel Gas
Code NFPA 54/ANS 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.
INSTALLATION NEEDS
Before installing heater, make sure
you have the items listed below.
piping (check local codes)
sealant (resistant to natural
gas)
equipment shutoff valve*
ground joint union
test gauge connection*
sediment trap
tee joint
pipe wrench
*A CSA/AGA design-certied equipment shutoff valve with 1/8” NPT
tap is an acceptable alternative to
test gauge connection. Purchase the
optional CSA/AGA design certied
equipment shutoff valve from your
dealer.
LOCATING HEATER
This heater is designed to be
mounted on a wall.
For convenience and efficiency,
install heater
where there is easy access for
operation, inspection, and
service.
in coldest part of room.
CAUTION: If you install the
heater in a home garage
heater pilot and burner must
be at least 18 inches above
oor.
locate heater where moving
vehicle will not hit it.
WARNING: Never install
the heater
in a bathroom
in a recreational vehicle.
where curtains, furniture,
clothing, or other ammable
objects are less than 36 inches
from the front, top, or sides
of the heater.
as a replace insert.
in high trafc areas.
in windy or drafty areas.
When the heater is installed in
Bathrooms,do not use ammable
products such as aerosol hair foot
spary or any product that contains
ammable vapors and keep towels
away from heater.
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 discolor walls.
6
INSTALLATION
WA R NI N G: Ma i nt a in t h e
min i mu m cl e ar anc e s sho w n
i n F ig u r e 4 . I f yo u c a n,
provide greater clearances from
oor, ceiling, and joining wall.
Figure 4 -Mounting Clearances
As Viewed From Front Of Heater
INSTALLING THERMOSTAT
SENSING BULB
For T-Stat Model Only
1. Pull out the sensing bulb from the
two clips located in the shippng
position according to the direction
as shown by the arrow. There is no
need to take out the two bulb clips.
2. Take out the bulb clip from the
hardware package and insert it into
the square hole and then insert the
sensing bulb into the bulb clip (see
Figure 5).
FASTENING HEATER TO WALL
Mounting Bracket
The mounting bracket is located
on back panel of heater (see
Figure 6). It has been taped there
for shipp i n g . R e m o ve m o u n ti ng
bracket from back panel.
Figure 6 -Mounting Bracket
Location
Removing Lower 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 7).
At tach ing to Wal l Stud: This
method provides the strongest hold.
Insert mounting screws through
mounting bracket and into wall studs.
Attaching to Wall Anchor: This
method al l o w s 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 heate r w ill be locat ed.
Make sure mounting bracket is
level.
WARNING: Maintain
minimum clearances shown in
Figure 8. If you can, provide
greater clearances from oor
and joining wall.
2. Mark screw locat i o n s on
wall. (see Figure 8)
Note: Only mark last hole on
each end of mounting bracket.
Insert mounting screws through
these holes only.
3. Remove tape and mounting
bracket from wall.
Figure 5 -Moving Thermostat
Sensing Bulb
Figure 7 - Removing Lower Front
Panel Of Heater
Methods For Attaching Mounting
Bracket To Wall
Only use last hole on each end
of mou nti ng bracket to attach
bracket to wall. Attach mounting
bracket to wall only in one of two ways:
1. Attaching to wall stud
2. Attaching to wall anchor
7
Figure 8 - Mounting Bracket
Clearances
INSTALLATION
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 9 below.
Figure 9 - Folding Anchor
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 10).
IMPORTANT: Do not
hammer key! For thick walls
(over 1/2” thick) or solid walls,
do not pop open wings.
Figure 10 - Popping Open An-
chor Wing For Thin Walls
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.
Placin g H eate r on Mount ing
Bracket
1. Locate two horizontal slots on
back pane l of h eate r (se e
Figure 11).
2. Place heater onto mounting
bracket. Slide horizontal slots
onto stand-out tabs on
mounting bracket.
Figure 11 - Mounting Heater Onto
Mounting Bracket
Figure 12 - Installing Bottom
Mouting Screw
Installing Bottom Mounting Screws
1. Locate bottom mounting hole. This
hole is near bottom on back
panel of heater (see Figure 12).
2. Mark screw locations on wall.
3. Remove heater from mounting
bracket.
4. If installing bottom mounting
screw into hollow or solid wall,
install wall anchors. Follow
steps 1 through 4 under Attach
ing to Wall Anchor Method. If
installing botto 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 through bottom
mounting hole and spacer. Place
tip of screw in opening of wall
anchor or drilled hole.
8. Tighten screw until heater is rmly
secured to wall. Do not over
tighten.
Note: Do not replace lower front
panel at this time. Replace loweer
front panel after making gas
connections and checking for
leaks (see page 10).
8
INSTALLATION
Continued
CONNECTING TO PORTABLE
CYLINDER GAS SUPPLY
WARNING: Review and understand
the warnings in the Safety Information
2. They are needed to safely operate
this heater. Follow all local codes
when using this heater.
WARNING: Test all gas piping
and connections for leaks after
installation or servicing. Never use an
open ame to check for a leak. Apply a
noncorrosive leak detection uid to all
joints. Bubbles forming show a leak.
Correct all leaks at once.
WARNING: Use pipe joint sealant
that is resistant to liquid petroleum
(PL) gas. Never bring a rellable
propane/PL cylinder indoors. A re or
explosion can occur causing property
damage, serious injury or death.
WARNING: This appliance requires a
3/8 in. NPT (National Pipe Thread) inlet
connection to the pressure regulator.
1. Remove gas tting from
hardware bag.
2. Apply pipe joint sealant lightly to
male NPT threads (see Figure
13-A). This will prevent excess
sealant from going into pipe.
Excess sealant in pipe could
result in clogged heater
valves.
3. Hold gas pressure regulator
with wrench when connecting
the gas tting. Do not over
tighten connection to regulator.
The regulator body could be
damaged.
4. Provide propane/PL supply
system (see Propane/PL
Supply, page 3).
5. Connect fuel gas tting on
hose/regulator assembly to
propane/PL tank(s). Turn fuel
gas tting counterclockwise
into threads on tank.
6. Connect hose to heater inlet.
Tighten rmly using a wrench.
You must use the regulator
supplied with heater.
7. Open propane/PL supply valve
on propane/PL tank(s) slowly.
Note: If not opened slowly,
excess-ow check valve on
propane/PL tank may stop gas
ow. If this happens, close
propane/PL supply valve and
open again slowly.
8. Check all connections for leaks.
Apply a noncor rosive leak
detection uid to gas joints.
Bubbles forming indicate a leak
that must be corrected.
9. Close propane/PL supply valve
WARNING: A qualied service
technician must connect heater to gas
supply. Follow all local codes.
IMPORTANT: You must use a propane/
PL gas supply cylinder that is compatible
with the connection device provided with
the hose and regulator.
Figure 13-A-Gas Connection
9
CONNECTING TO PERMANENTLY
LOCATED 100# OR LARGERGAS
SUPPLY
WARNING: A qualified
service person 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: Never con-
nect heater private (non-utility)
gas well. This gas is commonly
known as well-head gas.
CAUTION: Never connect
h e a t e r d i r e c t l y t o t h e
propane/PL supply. This heater
requires an external regulator
(not suppl ied). Install the
external regulator between the
heater and propane/PL supply.
The installer must supply an
external regulator. The external
regulator will reduce incoming gas
pressure. You must reduce
incoming gas pressure to between
11 and 14 inches of water. If you
do not reduce incoming gas
pressure, heater regulator damage
could occur. Install external
regulator with the vent pointing
down as shown in Figure 13.
Pointing the vent down protects it
from freezing rain or sleet.
Figure 14 - External Regulator with
Vent Pointing Down
INSTALLATION
Figure 13-B -Gas Connection
*A CSA/AGA design-certied equipment shutoff valve with 1/8” NPT
tap is an acceptable alternative to test gauge connection. Purchase
the optional CSA/AGA design-certied equipment shutoff valve from
your dealer. See Accessories, page 18.
CAUTION: Use only new,
black iron or steel pipe. Internallytinned copper tubing may be used
in certain areas. Check your local
codes. Use pipe of large enough
diameter to allow proper gas volume to heater. If pipe is too small,
undue loss of pressure will occur.
Typical Inlet Pipe Diameters
All models up to 20,000 BTU’s use
3/8’’ or greater pipe;
All models 25,000 BTU’s and higher,
use 1/2” or greater pipe.
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 14).
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
10
excess sealant from going into
pipe. Excess sealant in pipe could
result in clogged heater valves.
CAUTION: Use pipe
joint sealant that is resistant to
liquid petroleum (PL) gas.
Install sediment trap in supply line
as shown in Figu re 13- B. Locate
se d i m e n t trap where it is wi t h i n
reach for cleaning. Locate sediment
tr ap where tra pped matte r 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 insta lled wrong, heater may
not run properly.
IMPORTANT: Hold pressure
regulator with wrench when
connecting it to gas piping and/or
ttings.
WARNING:Do not over tighten
gas connections.
INSTALLATION
OPERATING YOUR HEATER
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 mixture of liquid soap
and water to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
Pressure Testing Gas Supply
Piping System
Test Pressures In Excess Of
1/2 PSIG (3.5 K Pa)
1. Disconnect appliance 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 equipment shutoff valve
was connected.
3. Pressurize supply piping system
by either using compressed air
or opening
main gas valve located on or
near gas meter.
4. Check all joints of gas supply
piping system. Apply mixture of
liquid soap and water to gas
joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment
shutoff valve to gas supply. Check
reconnected ttings for leaks.
Test Pressures Equal To or
Less Than 1/2 PSIG (3.5 K Pa)
1. Close equipment shutoff valve
(see Figure 15).
2. Pressurize supply piping system
by either using compressed air
or opening main gas valve
located on or near gas meter.
3. Check all joints from gas meter
to equipment shutoff valve (see
Figure 16). Apply mixture of
liquid soap and water to gas joints.
Bubbles forming show a leak.
4. Correct all leaks at once.
Pressure Testing Heater Gas
Connections
1. Open equipment shutoff valve
(see Figure 15).
2. Open main gas valve located on
or near gas meter.
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 16 ). Apply mixture of
liquid soap and water to gas
joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
6. L i g ht he a t er (s e e O pera t in g
He a t e r, pages 12 and 13 fo r
n o n - t he r mo s t a t m o d e l s o r
page 14 for thermostat model).
Check the res t of the intern a l
j o i n t s f o r l e a k s
7. Turn off heater (see To Turn Off
Gas to Ap pliance, page 12 for
non-thermostat models or page
13 f o r t h e r m os t a t mo d e l) .
8. Replace lower front panel.
Figure 15-Equipment Shutoff Valve
Figure 16 -Checking Gas Joints
NON-THERMOSTAT MODEL
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do
not follow these instructions
exactly, a re or explosion
may result causing property damage personal injury or loss of life.
A. 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 qualied service technician or
gas supplier. Force or attempted
repair may result in a fire or
explosion.
D. Do not use this appliance if any
pa r t has b een u n der w a ter.
Imm ediatel y call a qua lified
service technician to inspect
the appliance and to replace
any part of the control system
and any gas control which has
been under water.
11
OPERATING YOUR HEATER
ML100HBAHR
Manual Control Models
LIGHTING
INSTRUCTIONS
1. STO P ! Re a d the saf e t y
infor mation on the side of
heater.
2. Check th at g as s upply to
heater is on.
3. Push in gas contro l knob
slightly and turn 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 on the side of the
heater. If you do not smell
gas, go to the next step.
5. Pu s h in g as c o nt r ol k n o b
slightly and turn counter-
clockwise to“PILOT/IGN”
and depress for ve (5) seconds
NOTE: The rst time that the
heater is operated after connecting the gas supply , the control
knob should be depre ssed 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. If needed, keep pressing
ignitor button until pilot lights.
7. Keep control knob depressed
for ten (10) s e conds afte r
lighting pilot. If pilot goes out,
repeat steps 5,6 and 7.
8. To select the desired heating
level, partially press down the
control knob slightly and rotate
counterclockwise . Release the
downward pressure on the knob
while continuing to turn until the
knob locks at the desired setting
p o si t io n . Do n o t op e ra t e
between locked positions.
• Set control knob to desired
heating position.
NOTE: Both HIGH and LOW are
locked positions. You must press
in control knob before turning it
from these positions.
Figure 17 - Control Knob In The
OFF Position
Figure 18 - Pilot
WARNING: If you do not follow
these instructions exactly, a re
or explosion may result causing
property damage, personal injury
or loss of life.
CAUTION: Do not try to adjust
heating levels by using the
equipment shutoff valve.
TO TURN OFF
GAS TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise
to the OFF position.
2. Turn off all electric power to
the appliance if service is to
be performed.
Shutting Off Burner Only (Pilot
Stays Lit)
Turn control knob clockwise
to the PILOT/IGN position.
MANUAL LIGHTING
PROCEDURE
1. Remove lower front panel (see
Figure 7 page 7)
2. Follow steps 1 through 5
under Lighting Instructions.
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.
5. Replace lower front panel.
12
OPERATING YOUR HEATER
ML100TBAHR
THERMOSTAT MODEL
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. 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
sup p l ier f r o m a ne i gh -
bor ’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
or gas supplier. 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.
LIGHTING
INSTRUCTIONS
1. STOP! Read the safety
information on the side of heater.
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 gas. Then smell for gas,
including near the oor. If you
smell gas, STOP! Follow “B” in the
safety information on the side of
heater. If you don’t 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 19).
Note: You may be running this
heater for the rst time after
hooking up to gas supply. If so,
the control knob may need to be
pressed in for 30 seconds. This
will allow air to bleed from the
gas system.
If control knob does not pop
up when released, contact a
qualied service person or gas
supplier for repairs.
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 15
through 17. Also contact a qualif ied s ervic e perso n or gas
suppl ier 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 person or gas
supplier for repairs.
Note: If pilot goes out,repeat steps 3
through 7.This heater has a safety
inter lock syste m. Wait one( 1)
minute before lighting pilot again.
8. Turn control knob counter clock-
wise to desired seating
level. The main burner should
light. Set control knob to any
heat level between HI and LO
(5-1).
CAUTION: Do not try to
adjust heating levels by using the
equipment shutoff valve.
Figure 19 - Control Knob In The
OFF Position
Figure 20 - Pilot
THERMOSTAT CONTROL OPERATION
The thermostatic control used on this
model differs from standard
thermostats. Standard thermostats
simply turn on and off the burner. 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 t o any
comfort level between HI and Low (5-1).
Note: The thermostat sensing bulb
measures the temperature of air near
the heater cabinet.This may not always
agree with room temperatur(depending
on housing construction, installation
location, room size, open air
temperatres,etc.) Frequent use of your
heater will let you determine your own
comfort levels.
TO TURN OFF
GAS TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise
to the OFF position.
2. Turn off all electric power to the
appl ianc e i f serv ice is to
be performed.
Shutting Off Burner Only (pilot
stays lit )
Turn control knob clockwise to
the PILOT position.
13
OPERATING HEATER
Continued
MANUAL LIGHTING
PROCEDURE
1. Remove lower front panel (see
Figure 7 page 7).
2. Follow steps through 5 under
Lighting Instructions on page12.
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
Instuctions on page 12.
5. Replace lower front panel.
INSPECTING BURNER
Check pi lot flame p attern and
burner ame pattern often.
PILOT FLAME PATTERN
Figure 21 shows a correct pilot
ame pattern. Figure 22 shows an
incorrect pilot ame pattern. The
incorrect pilot ame is not touching
thermocouple. This will cause the
thermocouple to cool. When the
thermocouple cools, the heater will
shut down. If pilot ame pattern is
incorrect, as shown in Figure 22.
turn heater off (see To Turn Off
Gas to Appliance. page12
see Troubleshooting. pages15
through 17.
BURNER FLAME PATTERN
Figure 23 shows a correct burner
ame pattern. Figure 24 shows an
incorrect burner ame pattern.
If burner ame pattern is incorect, as
shown in Figure 24
WARNING: If yellow tipping
occurs, your heater could produce
increased levels of carbon monoxide.
If burner ame pattern shows yellow
tipping, follow instructions at bottom
of this page.
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.
turn heater off(see To Turn Off Gas
to Appliance page12)
see Troubleshooting, pages 15
through 17)
Figure 23 - Correct Burner Flame
Pattern
Figure 24 - Incorrect Burner Flame
Pattern
ODS/PILOT AND BURNER
Use a vacuum cleaner, pres-
surized air.
CLEANING BURNER
PILOT AIR INLET HOLE
We recommend that you clean the
unit every 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 using compressed air in a can, please follow
the directions on the can. If you don’t
follow directions on the can, you
could damage the pilot assembly.
1. Shut off the unit, including the
pilot. Allow the unit to cool for
at least thirty minutes.
2. Inspect burner, and pilot for dust
and dirt.
3. Blow air through the ports/slots
and holes in the bumer.
Also clean the pilot assembly. A yellow
tip on the pilot ame indicates dust
and dirt in the pilot assembly. There
is a small pilot air inlet hole about
two inches from where the pilot ame
comes out of the pilot assembly (see
Figure 25). With the unit off , lightly
blow air through the air inlet hole. You
may blow through a drinking straw
if compressed air is not available.
Figure 21 - Correct Pilot Flame
Pattern
Figure 22 - Incorrect Pilot Flame
Pattern
CARE AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: you must keep con-
trol areas, burner, and circulating
air passageways of heater clean.
Inspect these areas of heater before
each use. Have heater inspected
yearly by a qualied service person. Heater may need more frequent
cleaning due to excessive lint from
carpeting, bedding material, pet hair,
etc.
14
Figure 25 - Pilot Air Inlet Hole
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.
TROUBLESHOOTING
Note : All troubleshooting
items are listed in order of
operation.
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
When ignitor button is pressed
and control knob is pressed in and
turned to the PILOT position, there
is no spark at ODS/pilot.
When ignitor button is pressed
and control knob is press in and
turned to the PILOT position, there
is a spark at ODS/pilot but no
ignition.
ODS/pilot lights but ame goes
out when control knob is
released.
WARNING: Only a qualied
service person should service and
repair heater.
1. Ignitor electrode is positioned
wrong.
2. Ignitor electrode is broken.
3. Ignitor electrode is not connected
to ignitor cable.
4. Ignitor cable is pinched or wet.
5. Broken ignitor cable.
6. Bad piezo ignitor.
1. Gas supply turned off or equipment
shutoff valve is closed.
2. Control knob not fully pressed in
while pressing ignitor button.
3. Air in gas lines when installed.
4. ODS/pilot is clogged.
5. Gas regulator setting is not correct.
6. Control knob not in PILOT position.
1. Control knob is not fully pressed in.
2. Control knob is not pressed in
long enough.
3. Equipment shutoff valve is not
fully open.
4. Thermocouple connection is
loose at control valve.
5 Pilot ame is not touching
thermocouple, This allows
thermocouple to cool, causing
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.
CAUTION: Never use a
wire, needle, or similar object to
clean ODS/pilot. This can damage
ODS/pilot unit.
1. Replace ignitor.
2. Replace ignitor.
3. Reconnect ignitor cable.
4. Free ignitor cable if pinched by
any metal or tubing. Keep
ignitor cable dry.
5. Replace ignitor cable.
6. Replace piezo ignitor.
1. Turn on gas supply of open
equipment shutoff valve.
2. Fully press in control knob
while pressing ignitor button.
3. Continue holding down control
knob. Repeat igniting operation
until air is removed.
4. Clean ODS/pilot (see Cleaning and
Maintenance, Page 14) or re-
place ODS/pilot assembly.
5. Replace gas regulator.
6. Turn controlknob to PILOT position.
1. Press in control knob fully.
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds.
3. Fully open equipment shutoff valve.
4. Hand tighten until snug, then
tighten 1/4 turn more.
5. A) Contact local natural gas
company.
B) Clean ODS/pilot (see Cleaning
and Maintenance, Page 13) or
replace ODS/pilot assembly.
6. Replace thermocouple.
7. Contact Dealer or PRO-COM.
15
TROUBLESHOOTING
Continued
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
Bu r ne r (s ) do e s n ot li g ht af t er
ODS/pilot is lit.
1 Burner orice is clogged.
2. Burner orice diameter is too small.
3. Inlet gas pressure is too low.
1. Clean burner orice (see Cleaning
and Maintenance, Page 14) or
replace burner orice.
2. Replace burner orice.
3. Contact local natural gas company.
Delayed ignition of burner(s). 1. Manifold pressure is too low.
2. Burner orice is clogged.
Burner backring during combustion 1. Burner orifice is clogged or
damaged.
2. Burner is damaged.
3. Gas regulator is defective
Yellow ame during burner
combustion..
Slight smoke or odor during
initial operation.
Heater produces a whistling noise
when burner is lit.
1. Not enough air.
2. Gas regulator is defective.
3. Inlet gas pressure is too low.
1. Residues from manufacturing
processes.
1. Turning control knob to HI position
when burner is cold.
2. Air in gas line.
3. Air passageways on heater
are blocked.
4. Dirty or partially clogged burner
orice.
1. Contact local natural gas company.
2. Clean burner (see Cleaning and
Maintenance, Page 14) or replace
burner orice
1. Clean burner orice (see Cleaning
and Maintenance, Page 14) or
replace.
2. Contact Dealer or PRO-COM.
3. Replace gas regulator
1. Check burner for dirt and debris. If
found, clean burner (see Cleaning
and Maintenance Page 14).
2. Replace gas regulator.
3. Contact local propane/PL gas
company.
1. Problem will stop after a few
hours of operation.
1. Turn control knob to LO position
and let warm up for a minute.
2. Operate burner until air is removed
from line. Have gas line checked
by local propane/PL gas company.
3. Observe minimum installation
clearances (Figure 4, p7).
4. Clean burner (see Cleaning and
maintenance Page 14) or replace
burner orice.
Heater produces clicking/ticking
noise just after burner is lit or
shut off.
Wh i te po w der resid u e forming
within burner box or on adjacent
walls or furniture.
1. Metal is expanding while heating
or contracting while cooling.
1. When heated, the vapors from
furniture polish, wax, carpet
cleaners, etc. turn into white
powder residue.
16
1. Th i s is co mm o n wi t h m o s t
heaters. If noise is excessive,
contact qualied service person.
1. Turn heater off when using
furniture polish, wax, carpet
cleaner, or similar products.
TROUBLESHOOTING
Continued
WARNING: If you smell gas
Shut off gas supply.
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the gas
supplier’s instructions.
If you cannot reach your gas supplier, call the re department.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning
supplies, 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.
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
Heater produces unwanted
odors.
Heater shuts off in use (ODS
operates).
Gas odor exists even when control
k n o b i s i n O F F p o s i t i o n .
1. Heater is burning vapors from
paint, hair spray, glues, etc.
(See IMPORTANT statement
above).
2. Gas leak. See Warning Statement
at the top of page.
3. Low fuel supply.
1. Not enough fresh air is available.
2. Low line pressure.
3. ODS/pilot is partially clogged.
1. Gas leak. See Warning Statement
at top of page.
2. Control valve is defective.
1. Ventilate room. Stop using odor
causing products while heater
is running.
2. Locate and correct all leaks(see
Checking Gas Connections,
page 10).
3. Rell supply tank
1. Open window and/or door for
ventilation.
2. Contact local propane/PL
gas company.
3. Clean ODS/pilot (see Cleaning
Page 14).
1. Locate and correct all leaks (see
Checking Gas Connections,
Page 11).
2. Contact Dealer or PRO-COM.
Gas odor during combustion. 1. Gas leak. See Warning Statement
at top of page.
Moisture/condensation noticed on
windows.
1. Not enough combustion/ventilation
air.
17
1. Locate and correct all leaks
(see Checking Gas Connections,
Page 10).
1. Refer to Air for Combustion
and Ventilation requirements
Page 4.
SPECIFICATIONS
Btu(available)
Gas Type
Ignition
Pressure Regulator setting
Inlet Gas Pressure* (inches of water)
Maximum
Minimum
Dimensions, Inches (HxWxD)
Heater
Carton
Weight (pounds)
Heater
Shipping
Note: Dimensions listed are outer most points on the heater (includes control knobs and grill).
* For purposes of input adjustment.
ML100HBAHR
5,500/10,000
Propane/PL Only
Piezo
8” W.C.
11”
14”
19-1/8×14-1/8×6-3/8
22×16-3/4×8-1/8
13
16
TECHNICAL SERVICE
You may have further questions about installation, operation,
or troubleshooting. If so, contact
PRO-COM through phone number
1-877-886-5989.The information is
listed on the front of manual.
SERVICE HINTS
When Gas Pressure Is Too
Low
Pilot will not stay lit
Burner will have delayed ignition
Heater will not produce specied
heat
When Gas Quality Is Bad
Pilot will not stay lit
Burner will produce ames and
soot
Heater will backre when lit
You may feel your gas pressure is
too low or the gas quality is poor.
If so, contact your local natural gas
supplier.
EQUIPMENT SHUTOFF VALVE
For all models. Equipment shutoff
valve with 1/8” NPT tap.
ACCESSORIES
Purchase these heater accessories
from your local dealer. If they
can not supply these accessories,
contact PRO-COM for information.
ML100TBAHR
10,000
Propane/PL Only
Piezo
8” W.C.
11”
14”
19-1/8×14-1/8×6-3/8
22×16-3/4×8-1/8
14
17
REPLACEMENT PARTS
Note: Use only original replacement
parts. This will protect your warranty
coverage for parts replaced under
warranty.
PARTS UNDER WARRANTY
Contact authorized dealer from
whom you purchased this product.
If they are unable to supply original
replacement part(s), call the number
on the front of this manual. When
contacting your dealer or PRO-COM,
have ready:
your name
your address
model and serial numbers of
your heater
how heater was malfunctioning
type of gas used (propane/PL or
natural gas)
purchase date
warranty card
Usually, we will ask you to return the
defective part to the factory.
PARTS NOT UNDER
WARRANTY
Co ntact aut h orized de a lers o f
this product. If they can’t supply
original replacement part(s), contact
PRO-COM through phone number 1877- 886-5989.
18
ILLUSTRATED PARTS
BREAKDOWN
ML100HBAHR
19
PARTS LIST
ML100HBAHR
This list contains replaceable parts for your heater. When ordering replacement parts,
follow the instructions listed under Replacement Parts on page18 of this manual.
KEY
NO. PART NO. DESCRIPTION QTY.
1 MB10008 Cabinet Assembly 1
2 MB09003 Lower Front Panel Assembly 1
3 MB11005 Reector Unit 1
4 ML086-03 Glass 1
5 ML087-03 Upper Glass Retainer 1
6 ML088-03 Lower Glass Retainer 1
7 ML069-02 Self Tapping Screw 12
8 NV2020-1209 Control Valve 1
9 ML073-02 Ignitor Line 1
10 ML029-01 Control Valve Fixed Nut 1
11 MB16002 Control Knob Assembly 1
12 NRV81FI-8 Pressure Regulator 1
13 ML079-01 Self Locking Screw 2
14 MB40034A Main Inlet Tube Assembly 1
15 MB40056 ODS Line Assembly 1
16 MB40054 Gas Outlet Tube Assembly 1
17 NBB10-000M2 Burner 1
18 ML101-01 Burner Connector 1
19 ML091-10 Injector 1
20 ML103-02 Left Burner Support Bracket 1
21 ML129-02 Regulator Mounting Bracket 1
22 ND1308x600x7 ODS/pilot Assembly 1
22-1 ND0803-6 Thermocouple 1
22-2 ND0807 Ignitor Electrode 1
23 ML105-02 ODS Deector 1
24 6170-5Z Nut 2
25 MB29003 Grill Guard 1
26 ML084-03 Middle Panel 1
27 MB060-02 Mounting Bracket Assembly 1
28 ML083-03 Ignitor Assembly 1
29 PL023-01 Connector 1
30 NR02-02 Hose/Regulator Assemblly 1
MB28001 Assembly Hardware 1
ML070-14HR CSA/AGA Label 1
ML071-02 Gas Instruction Decal 1
20
ILLUSTRATED PARTS
BREAKDOWN
ML100TBAHR
21
PARTS LIST
ML100TBAHR
This list contains replaceable parts for your heater. When ordering replacement parts,
follow the instructions listed under Replacement Parts on page 18 of this manual.
KEY
NO. PART NO. DESCRIPTION QTY.
1 MB10007 Cabinet Assembly 1
2 MB09003 Lower Front Panel Assembly 1
3 MB11005 Reector Unit 1
4 ML086-03 Glass 1
5 ML087-03 Upper Glass Retainer 1
6 ML088-03 Lower Glass Retainer 1
7 ML069-02 Self Tapping Screw 12
8 SIT544-090-B SIT Thermostat Valve Assembly 1
9 ML111-02A Thermostat Valve Base/Bracket 1
10 6170-5Z Nut 2
11 845-4.8x60Z Screws 2
12 MB29003 Grill Guard 1
13 ML079-01 Self Locking Screw 2
14 ML084-03 Middle Panel 1
15 NRV81FI-8 Pressure Regulator 1
16 ML073-02 Ignitor Line 1
17 MB060-02 Mounting Bracket Assembly 1
18 MB40037 MAin Inlet Tube Assembly 1
19 MB40049 ODS Inlet Tube Assembly 1
20 MB40050 Burner Inlet Tube Assembly 1
21 NBB10-000M2 Burner 1
22 ML101-01 Burner Connector 1
23 ML091-10 Injector 1
24 ML103-02 Left Burner Support Bracket 1
25 ML129-02 Regulator Mounting Bracket 1
26 ND1308x600x7 ODS/pilot Assembly 1
26-1 ND0803-6 Thermocouple 1
26-2 ND0807 Ignitor Electrode 1
27 ML105-02 ODS Deector 1
28 ML083-03 Ignitor Assembly 1
29 PL023-01 Connector 1
30 NR02-02 Hose/Regulator Assemblly 1
MB28001 Assembly Hardware 1
ML070-14HR CSA/AGA Label 1
ML071-02 Gas Instruction Decal 1
ML065-01 Thermostat Sensing Bulb Clip 1
22
WARRANTY INFORMATION
Keep This Warranty
IMPORTANT: We urge you to ll your warranty registration card within TEN(10) days of date of installation, complete
with the entire serial number which can be found on the rating plate. Retain this portion of the card for your record.
Always specify model and serial numbers when communicating with customer service.
We reserve the right to amend these specications at any time without notice. The only warranty applicable is our
standard written warranty. We make no other warranty, expressed or implied.
LIMITED WARRANTY:
PRO-COM warrants this product to be free from defects in materials and components for ONE (1) year from the date
of rst purchase, provided that the product has been properly installed, operated and maintained in accordance with all
applicable instructions, to make a claim under this warranty, the Bill of Sale or cancelled check must be presented.
RESPONSIBILITY OF OWNER
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to
restore this heater to proper operating condition and an allowance for labor when provided by a PRO-COM Authorized
Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or PRO-COM who
will provide original factory replacement parts. Failure to use original factory replacement parts voids this warranty. The
heater MUST be installed by a qualied installer in accordance with all local codes and instructions furnished with the
unit.
WHAT IS NOT COVERED
This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that
fail or become damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by improper
installation. Travel, diagnostic cost, labor, transportation and any and all such other costs related to repairing a
defective heater will be the responsibility of the owner.
TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF
THE PRODUCT, THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES
AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES. INCLUDING WARRA NTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO ONE (1) YEARS ON ALL COMPONENTS
FROM THE DATE OF FIRST PURCHASE. PRO-COM'S LIABILITY IS HEREBY LIMITED TO THE PURCHASE
PRICE OF THE PRODUCT AND PRO-COM SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER
INCLUDING INDIRECT. INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of accidental
or consequential damages, the above limitation on implied warranties, or exclusion or limitation on damages may not
apply to you.
This warranty gives you specic legal right, and you may also have other rights that vary from state to state.
23
Printed in China
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