Procom ML300TGA, 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 T O 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
ML300HGA
ML300TGA
NON-THERMOST AT AND
THERMOSTAT MODEL
Table of Contents
Important Safety Information..................................... 2
Fresh Air for Combustion and Ventilation ............... 4
Installation..................................................................... 8
Operating Y our Heater ............................................... 1 1
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
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.
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.
5 Musick
Irvine
CA 92618
PRO-COM PHONE NUMBER: (877)886-5989
4600 Highlands parkway S.E
SUITE # D/E
Smyrna, GA 30080
the fire department.
Installation and service must be performed by a
qualified installer, service agency or gas
supplier.
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.
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.
WA TER VAPOR: A BY -PRODUCT OF 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.
Installer: Please leave these instructions with
the consumer.
Consumer: Please retain these instructions for
future use.
*Aftermarket: Completion of sale, not for purpose of
resale, from the manufacturer.
1
IMPORTANT
SAFETY INFORMATION
WARNINGS
IMPORTANT: Read this
owner’s manual carefully and
completely before trying to
assemble, operate, or service
this heater. Improper use of
this heater can cause serious
injury or death from burns,
fire, explosion, electrical
shock, and carbon monoxide
poisoning.
WARNING: Do not use any
accessory not approved 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
should be kept out of
traffic and away from furniture
and draperies.
Surface of heater becomes
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. Allow surface to cool
before touching.
Carefully supervise young
children when they are in the
same room with heater.
Make sure grill guard is in
place before running the heater.
Keep the appliance area clear
and free from combustible
materials, gasoline, and other
flammable vapors and liquids.
State of Massachusetts: The
installation must be made by a licensed plumber or gas fitter in the
Commonwealth of Massachusetts.
Sellers of unvented propane or natural
gas-fired 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-fired
space heaters shall be prohibited in
bedrooms and
bathrooms.
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/LP
supply tank(s) inside any
structure. Locate propane/LP
supply tank(s) outside.
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 fire department.
4. This heater shall not be
installed in a bathroom or
bedroom.
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 Fresh Air for
Combustion and Ventilation
pages 4 and 5.
6. Keep all air openings in 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 run heater
where flammable liquids or vapors
are used or stored
under dusty conditions
9. Turn heater off before using
furniture polish, wax, carpet
cleaner, or similar products. If
heated, the vapors from these
products may create a white
powder residue within burner
box or on adjacent walls or
furniture.
10. Do not use heater if any part
has been under water.Immediately
call a qualified 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.
11. Turn off heater and let cool
before servicing. Only a qualified
service person should service
and repair heater.
12. Operating heater above elevations
of 4,500 feet could cause pilot
outage.
13. To prevent performanc problems,
do not use propane/LP fuel tank
of less than 100 lbs. capacity.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning.
Early signs of carbon monoxide
poisoning resemble the flu with
headaches, dizziness, or nausea
If you have these signs, the heater
may not be working properly. Get
fresh air at once! Have heater
serviced. Some people are more
affected by carbon monoxide than
others. These include pregnant
women, persons with heart or lung
disease or anemia, those under the
influence of alcohol, and those
at high altitudes.
Propane/LP GAS: Propane/LP gas
is odorless. An odor-making agent is
added to propane/LP gas. The odor
helps you detect a propane/LP gas
leak . However, the odor added to
propane/LP gas can fade. Propane/LP
gas may be present even though
no odor exists.
Make certain you read and understand
all warnings. Keep this manual for
reference. It is your guide t o safe
and proper operation of this heater.
2
PRODUCT FEATURES
Figure1-Vent-Free Propane/LP Gas Heater(Model ML300TGA Shown)
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 HEAT
CONTROL ON THERMOSTAT
MODEL ML300TGA
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
room heater produces approximately one (1) ounce (30ml) of
wter for every 1,000 BTU’s (.3KW’s) of gas input per hour.
Unvented room heaters are remommended as supplemental
heat (a room) rather than a primary heat source (an entire
house) .In most supplemental heat application, the water
vapor does not create a problem. In most applications, the
water vapor enhances the low humidity atmosphere
experience during cold weather.
3
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
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.
The following steps will help insure that water
vapor does not become a problem.
1. Be sure the heater is sized properly for the
application, including ample combusion air and
circulation air.
2. If high humidity is experienced, a dehumidifier
may be used to help lower the water vapor content
of the air.
3. Do not use an unvented room heater as the
primary heat source.
FRESH AIR FOR
COMBUSTION AND
VENTILATION
WARNING: This heater
shall not be installed in a
confined space or unusually
tight construction unless
provisions are provided for
adequate combustion and
ventilation air. Read the
following instructions to
insure proper fresh air for this
and other fuel-burning
appliances in your home.
PRODUCING ADEQUATE
VENTILATION
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
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
defined 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
per pa-sec-m
openings gasketed or sealed
b. weather stripping has been
added on openable windows and
doors
and
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.
If your home does not meet all of
the three criteria above, see
Determining Fresh-Air Flow for
Heater Location, page 5.
2
) or less with
-11
10
kg
×
and
Confined and
Unconfined Space
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 m
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 m
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.
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.
3
per kw) of the
3
per kw)
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
Length
Example: Space size 20ft. (length)
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.
Width×Height= cu.ft. (volume of space)
×
16ft( width)×8ft. (ceiling height)=2560cu. ft. (volume of space)
×
width×height).
×
4
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 =
*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.
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Example:
Gas water heater 40,000 Btu/Hr
Vent free heater
Total = 60,000 Btu/Hr
+ 20,000 Btu/Hr
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
and one within 12
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
unconfined space. The combined spaces
must have enough fresh air to supply all
appliances in both spaces.
" of the ceiling
" of the floor on the
Figure 2 -Ventilation Air from Inside Building
5
Figure 3 -Ventilation Air from Outdoors
INSTALLATION
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
12
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.
Heated air entering the attic will activate
the power vent.
" of the ceiling and one within
" of the floor.
NOTICE: This heater is
intended for use as supplemental
heat. Use this heater along with
your primary heating system. Do
not install this heater as your
primary heat source. If you have
a central heating system, you
may run system’s circulating
blower while using heater. This
will help circulate the heat throughout the house. In the event of a
power outage, you can use this
heater as your primary
heat source.
WARNING: A qualified
service person must install
heater. Follow all local codes.
CHECK GAS TYPE
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
Before installing heater, make sure
you have the items listed below.
piping (check local codes)
sealant (resistant to propane/LP gas)
equipment shutoff valve*
ground joint union
test gauge connection*
sediment trap
tee joint
pipe wrench
*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.
"
LOCATING HEA TER
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
needed. Purchase the floor
mounting stand from your dealer.
See Accessories, page 17.
For convenience and efficiency,
install heater
where there is easy access for
operation, inspection, and service
in coldest part of room
An optional fan kit is available from
your dealer. See Accessories,
page 17. If planning to use fan,
locate heater near an electrical
outlet.
CAUTION: If you install the
heater in a home garage
heater pilot and burner must
be at least 18 inches above
floor.
locate heater where moving
vehicle will not hit it.
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 fluids, oil or kerosene
lamps, etc.) in the air exist may
discolor walls.
WARNING: Never install
the heater
in a bedroom or bathroom.
in a recreational vehicle.
where curtains, furniture,
clothing, or other flammable
objects are less than 36 inches
from the front, top, or sides
of the heater.
as a fireplace insert.
in high traffic areas.
in windy or drafty areas.
6
INSTALLATION
WARNING: Maintain the
minimum clearances shown
in Figure 4. If you can,
provide greater clearances from
floor, ceiling, and joining wall.
Figur 4 -Mounting Clearances As
Viewed From Front Of Heater
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
from too much moisture. See
Fresh Air for Combustion and
Ventilation, page s 4 and 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 shipping. Remove
mounting 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).
Attaching to Wall Anchor: This
method allows you to attach
mounting bracket to hollow walls
(wall areas between studs) or to
solid walls (concrete or masonry).
Decide which method better
suits your needs. Either method
will provide a secure hold for the
mounting bracket.
Marking Screw Locations
1. Tape mounting bracket to wall
where heater will be located.
Make sure mounting bracket is
level.
WARNING: Maintain
minimum clearances shown in
Figure 8. If you can, provide
greater clearances from floor
and joining wall.
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.
3. Remove tape and mounting
bracket from wall.
INSTALLING THERMOSTAT
SENSING BULB
For ML300TGA
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).
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
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
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.
7
Model ML300TGA, ML300HGA
Figure 8 - Mounting Bracket
Clearances
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