Procom Gas Heater ML300HGA User Manual

BLUE FLAME VENT-FREE  
PROPANE/LP GAS GARAGE  
HEATER  
OWNER S OPERATION AND INSTALLATION MANUAL  
Do not store, or use gasoline or other flammable  
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.  
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 fire department.  
ML300HGA  
ML300TGA  
Installation and service must be performed by a  
qualified installer, service agency or gas  
supplier.  
NON-THERMOSTAT AND  
THERMOSTAT MODEL  
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 qualified  
installer, service agency, or gas supplier.  
Table of Contents  
Important Safety Information..................................... 2  
Fresh Air for Combustion and Ventilation ............... 4  
Installation..................................................................... 8  
Operating Your Heater............................................... 11  
Cleaning&Maintenance.............................................13  
Trouble Shooting.........................................................14  
Specifications..............................................................17  
Illustrate Parts Breakdown ML300TGA .................18  
Parts List ML300TGA .................................................19  
Illustrate Parts Breakdown ML300HGA .................20  
Parts List ML300HGA .................................................21  
This appliance may be installed in an aftermar-  
ket* 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.  
WARNING: If the information in this  
manual is not followed exactly, a fire or  
explosion may result causing property  
damage, personal injury, or loss of life.  
WATER VAPOR:ABY-PRODUCTOF UNVENTED ROOM  
HEATERS  
Water vaporis a by-product of gas combustion.An  
unvented room heater produces approximately one (1)  
ounce (30ml) of water for every 1,000 BTU’s (.3KW’s)  
of gas input per hour. Refer to page 3.  
WARNING: This is an unvented gas-fired  
heater. It uses air (oxygen) from the room  
in which it is installed. Provisions for  
adequate combustion and ventilation air must  
be provided. Refer to Air For Combustion  
and Ventilation section on page 4 of this  
manual.  
Installer: Please leave these instructions with  
the consumer.  
Consumer: Please retain these instructions for  
future use.  
5 Musick  
Irvine  
4600 Highlands parkway S.E  
SUITE # D/E  
CA 92618  
*Aftermarket: Completion of sale, not for purpose of  
resale, from the manufacturer.  
Smyrna, GA 30080  
PRO-COM PHONE NUMBER: (877)886-5989  
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
PRODUCT FEATURES  
Figure1-Vent-Free Propane/LP Gas Heater(Model ML300TGA Shown)  
SAFETY DEVICE  
LOCAL CODES  
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.  
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  
PIEZO IGNITION SYSTEM  
New York, NY 10018  
National Fire Protection Association, Inc.  
Batterymarch Park  
This heater is equipped with a piezo ignitor.  
This system requires no matches, batteries, or  
other sources to light heater.  
Quincy, MA 02269  
THERMOSTATIC HEAT  
CONTROL ON THERMOSTAT  
UNPACKING  
1. Remove heater from carton.  
MODEL ML300TGA  
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.  
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.  
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS  
Water vaporis a by-product of gas combustion.An unvented The following steps will help insure that water  
room heater produces approximately one (1) ounce (30ml) of vapor does not become a problem.  
wter for every 1,000 BTU’s (.3KW’s) of gas input per hour.  
1. Be sure the heater is sized properly for the  
Unvented room heaters are remommended as supplemental application, including ample combusion air and  
heat (a room) rather than a primary heat source (an entire circulation air.  
house) .In most supplemental heat application, the water 2. If high humidity is experienced, a dehumidifier  
vapor does not create a problem. In most applications, the may be used to help lower the water vapor content  
water vapor enhances the low humidity atmosphere of the air.  
experience during cold weather.  
3. Do not use an unvented room heater as the  
primary heat source.  
3
Download from Www.Somanuals.com. All Manuals Search And Download.  
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  
defined as construction where:  
a. walls and ceilings exposed to the  
Confined and  
Unconfined Space  
FRESH AIR FOR  
COMBUSTION AND  
The National Fuel Gas Code  
ANS Z223.1 defines a confined  
space as a space whose volume  
is less than 50 cubic feet per  
1,000 Btu per hour (4.8 m3 per kw)  
of the aggregate input rating of all  
appliances installed in that space  
and an unconfined 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 with  
doors, are considered a part of  
the unconfined space.  
VENTILATION  
WARNING: This heater  
shall not be installed in a  
confined space or unusually  
tight  
provisions are provided for  
adequate combustion and  
construction  
unless  
outside  
atmosphere  
have  
a
ventilation air. Read the  
following instructions to  
insure proper fresh air for this  
continuous water vapor retarder  
with a rating of one perm (6 10-11 kg  
×
per pa-sec-m2)  
or less with  
and  
other  
fuel-burning  
openings gasketed or sealed and  
b. weather stripping has been  
added on openable windows and  
doors and  
appliances in your home.  
PRODUCING ADEQUATE  
VENTILATION  
c. caulking or sealants are applied  
to areas such as joints around  
window and door frames, between  
sole plates and floors, between  
wall-ceiling joints, between wall  
panels, at penetrations for plumbing,  
electrical, and gas lines, and at  
other openings. If your home meets  
all of the three criteria above, you  
must provide additional fresh air.  
See Ventilation Air from Outdoors,  
page 6.  
The following are excerpts from  
National Fuel Gas Code. NFPA  
54/ANS Z223.1, Section 5.3. Air for  
Combustion and Ventilation. All  
spaces in homes fall into one of  
the three following ventilation  
classifications:  
1. Unusually Tight Construction  
2. Unconfined Space  
3. Confined Space  
This heater shall not be installed  
in a confined space or unusually  
tight construction unless  
provisions are provided for  
adequate  
combustion  
and  
ventilation air.  
Adjoining rooms are  
*
communicating only if there are  
doorless passageways or  
ventilation grills between them.  
The information on pages 4  
through 6 will help you classify  
your space and provide adequate  
ventilation.  
If your home does not meet all of  
the three criteria above, see  
Determining Fresh-Air Flow for  
Heater Location, page 5.  
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION  
Determining if you have a Confined or Unconfined Space*  
Use this worksheet to determine if you have a confined or unconfined 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 is smaller than that defined as an  
unconfined space or if the building is of unusually tight construction, provide adequate combustion and  
ventilation air by one of the methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3  
or applicable local codes.  
4
Download from Www.Somanuals.com. All Manuals Search And Download.  
3. Add the Btu/Hr of all fuel burning appliances in the space.  
Vent-free heater  
Gas water healer*  
Gas furnace  
Vented gas heater  
Gas Fireplace logs  
Other gas appliances* +  
Total  
Btu/Hr  
Btu/Hr  
Btu/Hr  
Btu/Hr  
Btu/Hr  
Btu/Hr  
Btu/Hr  
Example:  
Gas water heater  
Vent free heater  
Total  
40,000  
20,000  
60,000  
Btu/Hr  
Btu/Hr  
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)  
60,000 Btu/Hr(actual amount of Btu/Hr used)  
The space in the above example is a confined space because the actual Btu/Hr used is more than the  
maximum Btu/Hr the space can support.  
You must provide additional fresh air. Your options are as follows:  
A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined  
space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From  
Inside Building, 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 unconfined.  
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an  
unconfined space. You will need no additional fresh air ventilation.  
VENTILATION AIR  
Ventilation Air From Inside Building  
This fresh air would come from an  
adjoining unconfined space. When  
ventilating to an adjoining unconfined  
space, you must provide two permanent  
openings: one within 12" of the ceiling  
and one within 12" of the floor 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, add-  
ing the space of the adjoining  
unconfined space. The combined spaces  
must have enough fresh air to supply all  
appliances in both spaces.  
Figure 2 -Ventilation Air from Inside Building  
5
Download from Www.Somanuals.com. All Manuals Search And Download.  
VENTILATION AIR  
Ventilation Air From Outdoors  
Provide extra fresh air by using  
ventilation grills or duels: You must  
provide two permanent openings: one  
within 12" of the ceiling and one within  
12" of the floor.  
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 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.  
Figure 3 -Ventilation Air from Outdoors  
Heated air entering the attic will activate  
the power vent.  
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 through-  
out the house. In the event of a  
power outage, you can use this  
*A CSA/AGA design-certified  
equipment shutoff valve with 1/8"  
NPT tap is an acceptable alternative  
to test gauge connection. Purchase  
the optional CSA/AGA design certi-  
fied equipment shutoff valve from  
your dealer. See Accessories, page  
17.  
CAUTION: This heater  
creates warm air currents.  
These currents move heat  
to wall  
heater. Installing  
next to vinyl or cloth wall  
c o v e r i n g s o r o p e r a t i n g  
surfaces next to  
heater  
heater where impurities (such as  
tobacco smoke, aromatic candles,  
cleaning fluids, oil or kerosene  
lamps, etc.) in the air exist may  
discolor walls.  
LOCATING HEATER  
This heater is designed to be  
mounted on a wall. You can locate  
heater on floor, away from a wall.  
An optional floor mounting stand is  
heater  
as  
your primary  
heat source.  
needed. Purchase  
the  
floor  
mounting stand from your dealer.  
See Accessories, page 17.  
For convenience and efficiency, in a bedroom or bathroom.  
WARNING: Never install  
the heater  
WARNING: A qualified  
service person must install  
heater. Follow all local codes.  
install heater  
in a recreational vehicle.  
where there is easy access for where curtains, furniture,  
CHECK GAS TYPE  
operation, inspection, and service  
in coldest part of room  
clothing, or other flammable  
objects are less than 36 inches  
from the front, top, or sides  
of the heater.  
Use only Propane/LP gas. If your gas  
supply is not propane/LP, do not  
install heater. Call dealer where you  
bought heater for proper type heater.  
INSTALLATION NEEDS  
An optional fan kit is available from  
your dealer. See Accessories,  
page 17. If planning to use fan, as a fireplace insert.  
locate heater near an electrical in high traffic areas.  
Before installing heater, make sure  
you have the items listed below.  
outlet.  
in windy or drafty areas.  
CAUTION: If you install the  
heater in a home garage  
piping (check local codes)  
sealant (resistant to propane/LP gas)  
equipment shutoff valve*  
ground joint union  
test gauge connection*  
sediment trap  
heater pilot and burner must  
be at least 18 inches above  
floor.  
locate heater where moving  
vehicle will not hit it.  
tee joint  
pipe wrench  
6
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
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.  
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 shipping. Remove  
mounting bracket from back panel.  
WARNING: Maintain the  
minimum clearances shown  
in Figure 4. If you can,  
provide greater clearances from  
floor, ceiling, and joining wall.  
Marking Screw Locations  
1. Tape mounting bracket to wall  
where heater will be located.  
Make sure mounting bracket is  
level.  
Figure 6 -Mounting Bracket  
Location  
WARNING:  
Maintain  
minimum clearances shown in  
Figure 8. If you can, provide  
greater clearances from floor  
and joining wall.  
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).  
Figur 4 -Mounting Clearances As  
Viewed From Front Of Heater  
2. Mark screw locations on  
wall (see Figure 8).  
Note: Only mark last hole on  
each end of mounting bracket.  
Insert mounting screws through  
these holes only.  
IMPORTANT: Vent-free  
heaters add moisture to the  
air. Although this is beneficial,  
installing heater in rooms  
without enough ventilation air  
may cause mildew to  
form  
3. Remove tape and mounting  
bracket from wall.  
from too much moisture. See  
Fresh Air for Combustion and  
Ventilation, page s 4 and 5.  
INSTALLING THERMOSTAT  
SENSING BULB  
For ML300TGA  
Figure 7 - Removing Lower Front  
Panel Of Heater  
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).  
Methods For Attaching Mounting  
Bracket To Wall  
Only use last hole on each end of  
mounting bracket to attach bracket to  
wall. These two holes are 16 inches  
apart from their centers.Attach mounting  
bracket to wall only in one of two ways:  
1. Attaching to wall stud  
Model ML300TGA, ML300HGA  
Figure 8 - Mounting Bracket  
Clearances  
2. Attaching to wall anchor  
Attaching to Wall Stud: This method  
provides the strongest  
hold. Insert  
mounting screws through mounting  
bracket and into wall studs.  
Figure 5 - Moving Thermostat  
Sensing Bulb  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
Attaching Mounting Bracket To  
Wall  
IMPORTANT: Do not  
hammer  
key! For thick walls  
(over 1/2" thick) or solid walls,  
do not pop open wings.  
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  
Figure 12 - Installing Bottom  
Mounting Screws  
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 firmly 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)  
2. Mark screw locations on wall.  
3. Remove heater from mounting  
bracket.  
Figure 10 - Popping Open Anchor  
Wing For Thin Walls  
4. If installing bottom mounting  
screws into hollow or solid wall,  
install wall anchors. Follow steps  
1 through 4 under Attaching  
To Wall Anchor Method. If  
installing 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.  
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 firmly fastened to wall.  
Placing Heater On Mounting  
Bracket  
1. Locate two horizontal slots on  
back panel of heater (see  
Figure 11).  
2. Place heater onto mounting  
bracket. Slide horizontal slots  
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.  
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.  
onto stand-out  
mounting bracket.  
tabs  
on  
8. Tighten both screws until heater  
is firmly secured to wall. Do not  
over tighten.  
Note: Do not replace front panel  
at this time. Replace front  
panel  
after  
making  
gas  
connections and checking for  
leaks (see pages 9,10).  
Figure 9 - Folding Anchor  
3. Insert wall anchor (wings  
first) into hole. Tap anchor  
flush 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).  
Figure 11 - Mounting Heater Onto  
Mounting Bracket  
Installing Bottom Mounting  
Screws  
1. Locate two bottom mounting  
holes. These holes are near  
bottom on  
back panel of  
heater(see Figure 12).  
8
Download from Www.Somanuals.com. All Manuals Search And Download.  
INSTALLATION  
CONNECTING TO GAS SUPPLY  
WARNING: qualified  
A
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.  
CAUTION: Never connect  
heater directly to the propane/LP  
supply. This heater requires an  
external regulator (not supplied).  
Install the external regulator between  
the heater and propane/LP 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 -Gas Connection  
*A CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is  
an acceptable alternative to test gauge connection. Purchase the optional  
CSA/AGA design-certified equipment shutoff valve from  
your dealer. See Accessories, page 17.  
Apply pipe joint sealant lightly to  
CAUTION: Use only new,  
male threads. This will prevent  
black iron or steel pipe.  
excess sealant from going into  
Internally-tinned copper tubing  
pipe. Excess sealant in pipe could  
may be used in certain areas.  
result in clogged heater valves.  
Check your local codes. Use pipe  
of large enough diameter to  
allow proper gas volume to heater.  
CAUTION: Use pipe joint  
sealant that is resistant to  
liquid petroleum (LP) gas.  
If  
pipe  
is  
too  
small,  
undue loss of pressure will occur.  
Typical Inlet Pipe Diameters  
ML300HGA / ML300TGA 1/2" or  
greater  
Install sediment trap in supply line  
as shown in Figure 14. Locate  
sediment trap where it is within  
reach  
sediment  
for cleaning. Locate  
trap where trapped  
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).  
matter is not likely to freeze. A  
sediment trap traps moisture and  
contaminants. This keeps them  
from going into heater controls. If  
sediment trap is not installed or is  
installed wrong, heater may  
not run properly.  
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.  
Figure 13 - External Regulator with  
Vent Pointing Down  
IMPORTANT:  
Hold pressure  
regulator with wrench when  
connecting it to gas piping and/or  
fittings.  
9
Download from Www.Somanuals.com. All Manuals Search And Download.  
OPERATING YOUR HEATER  
INSTALLATION  
THERMOSTAT MODEL  
ML300TGA  
CHECKING GAS  
CONNECTIONS  
Pressure Testing Heater Gas  
Connections  
1. Open equipment shutoff valve  
(see Figure 15).  
2. Open propane/LP supply tank  
valve.  
FOR YOUR SAFETYꢀ  
READ BEFORE LIGHTING  
WARNING: Test all gas piping  
and connections for leaks after  
installing or servicing. Correct all  
leaks at once.  
WARNING: If you do not  
follow  
exactly, a fire or explosion may  
result causing property  
these  
instructions  
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. Light heater (see Operating  
Heater, pages 10 and 11 for  
thermostat model or page 12  
for non-thermostat model).  
Check the rest of the internal  
joints for leaks.  
WARNING: Never use an open  
flame to check for a leak. Apply  
a
damage, personal injury or  
loss of life.  
mixture of liquid soap and water  
to all joints. Bubbles forming  
show a leak. Correct all leaks at  
once.  
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 floor because some gas is  
heavier than air and will settle  
on the floor .  
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.  
7. Turn off heater (see To Turn Off  
Gas To Appliance, page 11 for  
thermostat model or page  
12 for non-thermostat model).  
8. Replace lower front panel.  
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.  
2. Cap off open end of gas pipe  
where equipment shutoff valve  
was connected.  
3. Pressurize  
supply  
piping  
Immediately  
supplier from  
call  
a
your gas  
neighbor’s  
system by either using  
compressed air or opening  
propane/LP supply tank valve.  
4. Check all joints of gas supply  
piping system. Apply mixture of  
liquid soap and water to gas  
joints. Bubbles forming show  
a leak.  
phone. Follow  
the  
gas  
supplier’s instructions.  
If you cannot reach your  
gas supplier, call the fire  
department.  
Figure 15 -Equipment Shutoff Valve  
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 qualified service technician or  
gas supplier. Force or attempted  
repair may result in a fire or  
explosion.  
5. Correct all leaks at once.  
6. Reconnect heater and equipment  
shutoff valve to gas supply. Check  
reconnected fittings 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 propane/LP supply  
tank valve.  
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.  
D. Do not use this appliance if any  
part has been under water.  
Immediately call  
a
qualified  
service technician to inspect  
the appliance and to replace  
any part of the control system  
and any gas control which has  
been under water.  
Figure 16 -Checking Gas Joints  
4. Correct all leaks at once.  
1 0  
Download from Www.Somanuals.com. All Manuals Search And Download.  
OPERATING YOUR HEATER  
LIGHTINGꢀ  
7. Keep control knob pressed in  
for thirty (30) seconds after  
This increases or decreases the  
burner flame height. At times the room  
may exceed the set temperature. If so,  
the burner will shut off. The burner  
will cycle back on when room tem-  
INSTRUCTIONS  
lighting  
pilot.  
After  
30  
1. STOP! Read  
the safety  
seconds, release control knob.  
If control knob does not pop  
up when released, contact a  
qualified service person or  
gas supplier for repairs.  
information on the side of  
heater.  
2. Check that gas supply to  
heater is on.  
3. Push in gas control knob  
slightly and turn clockwise  
to the OFF position.  
perature drops  
below the set  
temperature. The control knob can be  
set to any heat level between HI and  
LO. Selecting the HI setting will cause  
the burner to remain fully on without  
modulating down in most cases.  
NOTE: If pilot goes out, repeat  
steps 3 through 7. Wait one (1)  
minute before lighting pilot again  
NOTE: Knob cannot be turned from  
"PILOT" to "OFF" unless knob is  
pushed in slightly. Do not  
force.  
NOTE: the thermostat sensing  
bulb  
8. Turn  
control  
knob  
to  
measures the temperature of air near  
the heater cabinet. This may not al-  
ways agree with room temperature  
(depending on housing construction.  
installation location, room size, open  
air temperatures, etc.). frequent use of  
your heater will let you determine  
counterclockwise  
desired heating Level. The  
main burner should light. Set  
control knob to any heat level  
between HI and LO.  
4. Wait five (5) minutes to clear  
out any air. Then smell for  
gas, including near the floor.  
If  
you  
smell gas, STOP!  
your  
own  
comfort  
levels.  
Follow "B" in the safety  
information on the side of the  
heater. If you do not smell  
gas, go to the next step.  
TO TURN OFF ꢀ  
GAS TO APPLIANCE  
5. Push  
slightly  
counterclockwise  
in gas control knob  
and turn  
to  
Shutting Off Heater  
1. Turn control knob clockwise  
to the OFF position.  
Figure 17 - Control Knob in The  
OFF Position  
"PILOT/IGN" and depress for  
five(5) seconds  
2. Turn off all electric power to  
the appliance if service is to  
be performed.  
SHUTTING OFF BURNER ONLY  
(PILOT STAYS LIT)  
NOTE: The first time that the  
heater is operated after connecting  
the gas supply , the control knob  
should be depressed for about thirty  
(30) seconds. This will allow air to  
bleed from the gas system.  
Turn control knob clockwise  
to the PILOT/IGN position.  
MANUAL LIGHTINGꢀ  
PROCEDURE  
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.  
Figure 18 - Pilot  
1. Remove lower front panel (see  
Figure 7 page 7).  
THERMOSTATꢀ  
CONTROL  
2. Follow steps  
1
through 5  
under Lighting Instructions.  
3. With control knob pressed in,  
strike match. Hold match to  
pilot until pilot lights.  
OPERATION  
NOTE: If pilot does not stay lit,refer  
to Troubleshooting, pages 14 through  
16. Also contact a qualified service  
person or gas supplier for repairs.  
Until repairs are made, light pilot  
with match. To light pilot with match,  
see Manual Lighting Procedure.  
The thermostatic control used on  
these models differs from standard  
thermostats. Standard thermostats  
simply turn on and off the burner.The  
thermostat used on this heater  
senses the room temperature. The  
thermostat adjusts the amount  
4.  
Keep control knob pressed in  
for 30 seconds after lighting  
pilot. After 30 seconds, release  
control knob. Follow step 8  
under Lighting Instructions.  
of gas flow to the  
burner.  
5. Replace lower front panel.  
11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
OPERATING YOUR HEATER  
LIGHTINGꢀ  
INSTRUCTIONS  
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.  
NON-THERMOSTAT MODEL  
ML300HGA  
1. STOP!  
Read  
the  
safety  
information on the side of heater.  
2. Check that gas supply to  
heater is on.  
FOR YOUR SAFETYꢀ  
READ BEFORE LIGHTING  
7.  
Keep control knob depressed  
for ten (10) seconds after lighting  
pilot. If pilot goes out, repeat  
steps 5,6 and 7.  
WARNING: If you do not  
follow these instructions exactly,  
a fire or explosion may result  
causing property damage,  
personal injury or loss of life.  
3.  
Push in control knob slightly  
and turn clockwise to the  
OFF position.(see Figure 19)  
NOTE: Knob cannot be turned  
from "PILOT " to "OFF" unless  
knob is pushed in slightly. Do  
not force.  
8.  
To select the desired heating  
level, partially press down the  
control knob slightly and rotate  
A.  
This appliance has a pilot  
which must be lighted by hand.  
When lighting the pilot, follow these  
instructions exactly.  
counterclockwise  
. Release  
the downward pressure on the  
knob while continuing to turn  
until the knob locks at the  
desired setting position. Do not  
4. Wait five minutes to clear out  
any gas. Then smell for gas, in-  
cluding near the floor. 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.  
B.  
BEFORE LIGHTING smell all  
around the appliance area for gas.  
Be sure to smell next to the floor  
because some gas is heavier than  
air and will settle on the floor.  
operate  
positions.  
between locked  
5.  
Push in and turn control knob  
counterclockwise to PILOT  
position. Press in control knob  
for five(5) seconds.  
Note: You may be running  
this heater for the first time  
after hooking up to gas supply.  
If so, you may need to press in  
control knob for 30 seconds. This  
will allow air to bleed from  
the gas system.  
WHAT TO DO IF YOU SMELL GAS  
TO TURN OFFꢀ  
GAS TO APPLIANCE  
Shutting Off Heater  
Do not try to light any appliance.  
Do not touch any electric  
switch, do not use any phone  
in your building.  
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 )  
Slightly press in control turn  
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  
fire  
control knob clockwise  
PILOT position.  
to the  
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 qualified  
service technician or gas supplier.  
Force or attempted repair may  
result in a fire or explosion.  
D. Do not use this appliance if any  
part has been under water.  
Immediately call a qualified service  
technician to inspect the  
appliance and to replace any part of  
the control system and any gas  
control which has been under water.  
MANUAL LIGHTINGꢀ  
PROCEDURE  
1. Remove lower front panel (see  
Figure 7 page 7).  
Figure 19 - Control Knob In The  
OFF Position  
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.  
Figure 20 - Pilot  
5. Replace lower front panel.  
1 2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CLEANING ODS/PILOT AND  
BURNER  
INSPECTING BURNER  
Check pilot flame pattern and  
burner flame pattern often.  
WARNING: If yellow tipping  
occurs, your heater could  
produce increased levels of  
carbon monoxide. If burner  
flame pattern shows yellow  
tipping, follow instructions at  
bottom of this page.  
Use  
a
vacuum cleaner,  
pressurized air or small, soft  
bristled brush to clean.  
PILOT FLAME PATTERN  
Figure 21 shows a correct pilot  
flame pattern. Figure 22 shows an  
incorrect pilot flame pattern. The  
incorrect pilot flame is not touching  
thermocouple. This will cause the  
thermocouple to cool. When the  
thermocouple cools, the heater will  
shut down. If pilot flame pattern is  
incorrect, as shown in Figure 22.  
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.  
Notice: Do not mistake orange  
flames with yellow tipping. Dirt  
or other fine particles enter the  
heater and burn causing brief  
patches of orange flame.  
turn heater off (see To Turn  
Off Gas To Appliance on page  
12 for non-thermostat model or  
page 11 for thermostat model)  
see Troubleshooting on pages 14  
through 16  
Figure 23 - Correct Burner Flame  
Pattern  
1.  
Shut off the unit, including the  
pilot. Allow the unit to cool for  
at least thirty minutes.  
2.  
3.  
Inspect burner, pilot for dust  
and dirt.  
Blow air through the ports/slots  
and holes in the burner.  
Figure 21 - Correct Pilot Flame  
Pattern  
Figure 24 - Incorrect Burner Flame  
Pattern  
Clean the pilot assembly also. A  
yellow tip on the pilot flame  
indicates dust and dirt in the pilot  
assembly. There is a small pilot air  
inlet hole about two inches from  
where the pilot flame 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.  
CLEANING AND  
MAINTENANCE  
Figure 22 - Incorrect Pilot Flame  
Pattern  
WARNING: Turn off heater  
and let cool before servicing.  
BURNER FLAME PATTERN  
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 qualified service person. Heater may  
need more frequent cleaning due to  
excessive lint from carpeting, bedding  
material, pet hair, etc.  
Figure 23 shows a correct burner  
flame pattern. Figure 24 shows an  
incorrect burner flame pattern. If  
pilot flame pattern is incorrect, as  
shown in Figure 24.  
turn heater off (see To Turn Off  
Gas To Appliance on page 12 for  
non-thermostat model or page  
11 for thermostat model)  
see Troubleshooting on pages 14  
through 16  
Figure 25 - Pilot Inlet Air Hole  
CLEANING HEATER CABINET  
Air Passageways  
Use  
pressurized air to clean.  
Exterior  
Use a soft cloth dampened with  
a
vacuum cleaner or  
a mild soap and water mixture.  
Wipe the cabinet to remove dust.  
13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
TROUBLESHOOTING  
Note :  
All  
troubleshooting  
CAUTION: Never use a wire,  
needle, or similar object to clean  
ODS/pilot. This can damage  
ODS/pilot unit.  
WARNING: Only a qualified  
service person should service and  
repair heater.  
items are listed in order of  
operation.  
OBSERVED PROBLEM  
POSSIBLE CAUSE  
REMEDY  
When ignitor button is pressed in,  
there is no spark at ODS/pilot.  
1. Ignitor electrode is positioned  
wrong.  
1. Replace ignitor.  
2. Ignitor electrode is broken.  
3. Ignitor electrode is not connected  
to ignitor cable.  
2. Replace ignitor.  
3. Reconnect ignitor cable.  
4. Ignitor cable pinched or wet.  
4. Free ignitor cable if pinched by  
any  
metal or tubing. Keep  
ignitor cable dry.  
5. Broken ignitor cable.  
6. Bad piezo ignitor.  
5. Replace ignitor cable.  
6. Replace piezo ignitor.  
When ignitor button is pressed in,  
there is a spark at ODS/pilot but no  
ignition.  
1. Gas supply turned off or  
equipment shutoff valve is closed.  
2. Control knob not fully pressed in  
while pressing ignitor button.  
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.  
3. Air in gas lines when installed.  
4. ODS/pilot is clogged.  
4. Clean ODS/pilot (see Cleaning  
and Maintenance. Page 13) or  
replace ODS/pilot assembly.  
5. Replace gas regulator.  
6. Turn control knob to pilot position.  
7. Contact local propane/LP gas  
campany.  
5. Gas regulator setting is not correct.  
6. Control knob not in PILOT position.  
7. Depleted gas supply.  
ODS/pilot lights but flame goes out  
when control knob is released.  
1. Control knob is not fully pressed in.  
2. Control knob is not pressed in  
long enough.  
1. Press in control knob fully.  
2. After ODS/pilot lights, keep control  
knob pressed in 30 seconds.  
3. Equipment shutoff valve is not  
fully open.  
3. Fully open equipment shutoff valve.  
4. Thermocouple connection loose  
at control valve.  
4. Hand tighten until snug, then  
tighten 1/4 turn more.  
5 Pilot flame is not touching  
thermocouple. This allows  
thermocouple to cool, causing pilot  
flame to go out.  
5. A) Contact local propane/LP gas  
company.  
B) Clean ODS/pilot (see Cleaning  
and Maintenance. Page 13) or  
replace ODS/pilot assembly.  
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.  
6. Replace thermocouple.  
7. Replace control valve.  
1 4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
TROUBLESHOOTING  
Continued  
OBSERVED PROBLEM  
POSSIBLE CAUSE  
REMEDY  
Burner(s)does not light after  
ODS/pilot is lit.  
1. Burner orifice is clogged.  
1. Clean burner orifice (see Cleaning  
and Maintenance, page 13) or  
replace burner orifice.  
2. Burner orifice diameter is too small  
3. Inlet gas pressure is too low.  
2. Replace burner orifice.  
3. Contact local Propane/LP gas company.  
Delayed ignition of burner(s).  
1. Manifold pressure is too low.  
2. Burner orifice is clogged.  
1. Contact local Propane/LP gas company.  
2. Clean burner (see Cleaning and  
Maintenance, page 13) or replace  
burner orifice.  
Burner backfiring during combustion.  
1. Burner orifice is clogged or  
damaged.  
1. Clean burner orifice (see Cleaning  
and Maintenance, page 13) or  
replace.  
2. Burner damaged.  
2. Replace burner.  
3. Gas regulator defective.  
3. Replace gas regulator.  
Yellow flame during burner  
combustion.  
1. Not enough air.  
1. Check burner for dirt and debris. If  
found, clean burner (see Cleaning  
and Maintenance, Page 13).  
2. Gas regulator defective.  
2. Replace gas regulator.  
3. Inlet gas pressure is too low.  
3. Contact local propane/LP gas company.  
Slight smoke or odor during  
initial operation.  
1. Residues from manufacturing  
processes.  
1. Problem will stop after a few hours  
of operation.  
Heater produces a whistling noise  
when burner is lit.  
1. Turning control knob to HI position  
when burner is cold.  
2. Air in gas line.  
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/LP gas company.  
3. Observe minimum installation  
clearances (Figure 4, p7).  
3. Air passageways on heater  
blocked.  
4. Dirty or partially clogged burner  
orifice.  
4. Clean burner (see Cleaning and  
maintenance, Page13) or replace  
burner orifice.  
Heater produces a clicking/ticking  
noise just after burner is lit or  
shut off.  
1. Metal expanding while heating or  
contracting while cooling.  
1. This is common with most  
heaters. If noise is excessive,  
contact qualified service person.  
White powder residue forming within  
burner box or on adjacent  
walls or furniture.  
1. When  
heated, vapors from  
1. Turn heater off when using  
furniture polish, wax, carpet  
cleaner or similar products.  
furniture polish, wax, carpet  
cleaners, etc. turn into white  
powder residue.  
15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
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 fire department.  
IMPORTANT: Operating heater where impurities in air exist may create odors. Clean-  
ing 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.  
REMEDY  
POSSIBLE CAUSE  
OBSERVED PROBLEM  
1. Ventilate room. Stop using odor  
causing products while heater  
is running.  
2. Locate and correct all leaks(see  
Checking Gas Connections,  
page 10).  
1. Heater burning vapors from  
paint, hair spray, glues, etc.  
(See IMPORTANT statement  
above).  
2. Gas leak. See Warning  
Statement at top of page.  
Heater produces unwanted odors.  
3. Refill supply tank.  
3. Low fuel supply.  
1. Open window and/or door for  
ventilation.  
2. Contact local Propane/LP gas  
company.  
1. Not enough fresh air is available.  
2. Low line pressure.  
Heater shuts off in use (ODS operates).  
3. Clean ODS/pilot (see Cleaning  
Page 13).  
3. ODS/pilot is partially clogged.  
1. Locate and correct all leaks(see  
Checking Gas Connections,  
Page 10).  
1. Gas leak. See Warning  
Statement at top of page.  
2. Control valve is defective.  
Gas odor even when control knob is  
in OFF position.  
2. Replace control valve.  
1. Take apart gas tubing and  
remove foreign matter.  
1. Foreign matter between control  
valve and burner.  
Gas odor during combustion.  
2. Locate and correct all leaks  
(see Checking Gas Connections,  
Page 10).  
2. Gas  
leak.  
See Warning  
Statement at top of page.  
1. This is common with most  
heaters. if noise is excessive,  
contact qualified service person.  
1. Metal is expanding while heating  
or contracting while cooling.  
Heater produces a clicking/ticking  
noise just after burner is lit or shut off.  
1. Refer to Air for Combustion and  
1. Not enough combustion/ventilation  
air.  
Moisture/condensation noticed on  
windows.  
Ventilation requirements, Page  
4.  
1 6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SPECIFICATIONS  
ML300HGA  
15,000/28,000  
Propane/LP Only  
Piezo  
ML300TGA  
14,000/28,000  
Propane/LP Only  
Piezo  
Btu(available)  
Gas Type  
Ignition  
8" W.C.  
8"W.C  
Pressure Regulator Setting  
Inlet Gas Pressure* (inches of water)  
14"  
11"  
14"  
11"  
Maximum  
Minimum  
Dimensions, Inches (HxWxD)  
Heater  
23 1/2 26 5/8 8  
23 1/2 26 5/8 8  
×
×
×
×
×
×
×
×
26 1/2 28 1/2 91/4  
26 1/2 28 1/2 91/4  
Carton  
Weight (pounds)  
Heater  
26  
31  
26  
31  
Shipping  
Note: Dimensions listed are outer most points on the heater (includes control knobs and grill).  
* For purposes of input adjustment.  
For all models, provides better heat  
TECHNICAL SERVICE  
REPLACEMENT PARTS  
Note: Use only original replacement  
parts. This will protect your warranty  
coverage for parts replaced under  
warranty.  
distribution. Makes heater or efficient.  
Complete installation and operating  
instructions included.  
You may have further questions  
about installation, operation, or  
troubleshooting. If so, contact  
PRO-COM. The information on the  
back of this manual.  
Thermostatically-controlled PF06-  
YJLF-B, includes three settings  
ON/OFF/AUTO  
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 this back of the manual. When  
contacting your dealer or PRO-COM,  
have ready:  
ACCESSORIES  
Purchase these heater accessories  
from your local dealer. If they can  
not supply these accessories,  
contact PRO-COM for information.  
You can also write to the address  
listed on the back page of this  
manual.  
your name  
your address  
model and serial numbers of  
your heater  
how heater was malfunctioning  
type of gas used (propane/LP or  
natural gas)  
purchase date  
Warranty Card  
Usually, we will ask you to return the  
defective part to the factory.  
FAN PF06-YJLF-B  
PARTS NOT UNDER  
EQUIPMENT SHUTOFF VALVE  
For all models. Equipment shutoff  
valve with 1/8" NPT tap. This part  
is not currently available from  
PRO-COM.  
WARRANTY  
Contact authorized dealers of this  
product. If they can’t supply original  
replacement part(s),contact PRO-COM.  
17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ILLUSTRATED  
PARTS  
B
M
1 8  
Download from Www.Somanuals.com. All Manuals Search And Download.  
This list contains replaceable parts used in your heater. When ordering replacement  
parts, follow the instructions listed under Replacement Parts 17 on page of this manual.  
PARTS LIST  
ML300TGA  
ML300TGA  
PART NO.  
KEY  
NO.  
QTY  
DESCRIPTION  
MB10002  
MB09001  
MB11002  
ML089-01  
ML084-01  
MB29001  
ML069-02  
SIT545-175  
845-4.8x60Z  
ML111-01  
ML083-03  
ML073-01  
NRV81FI-8  
96-4Z  
ML079-01  
MB40006  
MB40022  
MB40023  
NBB30-000B1  
ML101-01  
ML091-07  
ML103-01  
ML104-01  
ND2008x800x9  
ND0803-8  
ND0807-B2  
ML105-01  
6170-5Z  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
24_1  
24_2  
25  
26  
27  
1
1
1
1
1
1
12  
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
Cabinet Assembly  
Lower Front Panel Assembly  
Reflector Unit  
Steel Wind Shield  
Middle Panel  
Grill Guard  
Self Tapping Screw  
Thermostat Valve Assembly  
Screws  
Thermostat Valve Base/Bracket  
Ignitor Assembly  
Ignitor Line  
Pressure Regulator  
Washer  
Self Locking Screw  
Main Inlet Tube Assembly  
ODS Line Assembly  
Burner Inlet Tube Assembly  
Burner  
Burner Connector  
Injector  
Left Burner Support Bracket  
Right Burner Support Bracket  
ODS/pilot Assembly  
Thermocouple  
Ignitor Electrode  
ODS Upper Deflector  
NUT  
ML060-01  
Mounting Bracket  
PARTS AVAILABLE NOT SHOWN  
Assembly Hardware  
CSA Label  
Gas Instruction Decal  
Inside Warning Label  
Thermostat Sensing Bulb Clip  
MB28001  
ML070-28  
ML071-02  
ML072-01  
ML065-01  
1
1
1
1
2
19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ILLUSTRATED  
PARTS  
BREAKDOWN  
2 0  
Download from Www.Somanuals.com. All Manuals Search And Download.  
PARTS LIST  
ML300HGA  
This list contains replaceable parts used in your heater. When ordering replacement  
parts, follow the instructions listed under Replacement Parts on page 17 of this manual.  
KEY  
ML300HGA  
QTY  
DESCRIPTION  
NO.  
PART NO.  
1
2
3
4
5
6
7
8
9
MB10003  
MB09001  
MB11002  
ML089-01  
MB29001  
ML084-01  
ML083-03  
ML069-02  
NV2020-14  
ML073-01  
MB16002  
ML029-01  
NRV81FI-8  
96-4Z  
ML079-01  
MB40016  
MB40018  
MB40019  
MB40020  
MB40021  
ML096-01  
MB40017  
NBB30-000B1  
ML101-01  
ML091-01  
ML103-01  
ML104-01  
ND2008x800x9  
ND0803-8  
ND0807-B2  
ML105-01  
6170-5Z  
1
1
1
1
1
1
1
12  
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
Cabinet Assembly  
Lower Front Panel Assembly  
Reflector Unit  
Steel Wind Shield  
Grill Guard  
Middle Panel  
lgnitor Assembly  
Self Tapping Screw  
Control Valve  
Ignitor Line  
Control Knob Assembly  
Control Valve Fixed Nut  
Pressure Regulator  
Washer  
Self Locking Screw  
Main Inlet Tube Assembly  
ODS Line Assembly  
Lower Gas Outline Tube Assembly  
Medium Gas Outline Tube Assembly  
High Gas Outline Tube Assembly  
4-Way Connector  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
28-1  
28-2  
29  
30  
31  
Burner Inlet Tube Assembly  
Burner  
Burner Connector  
Injector  
Left Burner Support Bracket  
Right Burner Support Bracket  
ODS/Pilot Assembly  
Thermocouple  
Ignitor Electrode  
ODS Upper Deflector  
NUT  
ML060-01  
Mounting Bracket  
PARTS AVAILABLE.NOT SHOWN  
Assembly Hardware  
CSA Label  
Gas Instruction Decal  
Inside Warning Label  
Thermostat Sensing Bulb Clip  
MB28001  
ML070-26  
ML071-02  
ML072-01  
ML065-01  
1
1
1
1
2
21  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Pelco Video Games CM6700 User Manual
Perle Systems Universal Remote S 1110 S 1110 SFP S 1110 XT User Manual
Philips Automobile Accessories SBCHP195 User Manual
Philips Baby Accessories 240BW8 User Manual
Philips Electric Shaver 4203 000 51541 User Manual
Philips Headphones SHK2010 User Manual
POSIFLEX Business Machines Utility Vehicle LM 6601 User Manual
Poulan Snow Blower 183615 User Manual
Powermate Portable Generator PMC543250 User Manual
ProForm Treadmill 831293230 User Manual