INFRARED VENT-FREE
PROPANE/LP GAS
SPACE HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
ML150HPA ML150TPA ML250HPA ML250TPA
Table of Contents
Important SafetyInformation................................. |
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2 |
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Product Features..................................................... |
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Proper Ventilation & FreshAir.............................. |
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4 |
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Installation................................................................ |
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6 |
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OperatingYour Heater............................................ |
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10 |
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Cleaning & Maintenance....................................... |
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13 |
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Trouble Shooting................................................... |
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14 |
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Specifications.......................................................... |
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PartsList.................................................................. |
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WARNING: If |
the |
information |
in this |
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manual |
is |
not |
followed |
exactly, a |
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fire or |
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explosion |
may |
result causing |
property |
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damage, personal injury, |
or |
loss of |
life. |
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WARNING: This |
is |
an |
unvented gas- |
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fired heater. It uses air |
(oxygen) from the |
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room |
in |
which |
it |
is installed. Provi- |
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sions for |
adequate combustion and ventila- |
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tion |
air |
must |
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be |
provided. |
Refer |
to |
Air |
For Com- |
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bustion |
and Ventilation section on page 4 |
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of this manual. |
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CONTINENTAL APPLIANCE INC/U.S. OFFICE |
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5 Musick |
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4600 Highlands Parkway S.E. |
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Irvine |
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Suite |
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D/E |
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CA 92618 |
Smyrna, GA 30080 |
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Nanjing PRO-COM Electric Appliance Co.,Ltd.
#6 Chuangye Road,High New Tech.Zone,
Great Bridge Road North,Nanjing,210061,
China.
TOLL FREE NUMBER: 1-877-886-5989
Do not store, or use gasoline or other flammable
vapors |
and |
liquids |
in the vicinity |
of this |
or |
any |
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other appliance. |
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WHAT TO DO IF YOU SMELL GAS |
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Do not try to light any |
appliance. |
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Do |
not |
touch |
any |
electrical |
switch; |
do |
not |
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use |
any |
phone |
in your building. |
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•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. |
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.
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS
Water vapor is a by-product of gas combustion.An unvented room heater productes approximately one (1) ounce (30ml) of water for every 1,000 BTU’s (.3KW’s) of gas input per hour. Refer to page 3.
*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.
PR-ML062-12-0803
IMPORTANT
SAFETY INFORMATION
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IMPORTANT: Read |
this |
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owner’ s |
manual |
carefully |
and |
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c o m p le t e ly |
b e f o r e t r ying |
t o |
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assem ble , operate, |
or |
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service |
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this |
heater. Im proper |
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use |
of |
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this |
heater |
can |
cause |
serious |
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inj ury |
or |
death |
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f rom |
burns, |
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f i r e , e x p l o s i o n , |
e l e c t r i c a l |
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shock, |
and |
carbon |
m onoxide |
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poisoning. |
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WARNING: Do not use any |
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accessory |
not |
approved |
f or |
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use |
with |
this |
heater. |
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WARNING: Any |
change to |
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this |
heater |
or its |
controls |
can |
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be dangerous. |
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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 ho ul d b e k e pt ou t o f 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.
Caref ully 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 heat-
ers 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.
WARNING
Modeles ML150HPA, ML150TPA, ML250HPA, ML250TPA 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/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 bedroom or bathroom
5.Always run heater with control knob at LOW or HIGH locked positions. Never set control knob between locked positions. Poor combustion and higher levels of carbon monoxide may result.
6.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.
7.Keep all air openings in front and bottom of heater clear and free of debris. This will insure enough air for proper combustion.
8.If heater shuts off. Do not relight until you provide fresh, outside air. If heater keeps shutting off, have it serviced.
9.Do not operateT
•where flammable liquids or vapors are used or stored
•under dusty conditions
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10.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.
11.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.
12.Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.
13.Operating heater above elevations of 4,500 feet could cause pilot outage.
14.To prevent performance 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 det ec t 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 to safe and proper operation of this heater.
PRODUCT FEATURES
Figure1-Vent-Free Propane/LP Gas Heater
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 MODELS
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 ANSI Z223.1, also known as NFPA 54*.
*Available from :
American National Standards Institute, Inc. 1430 Broadway
New York, NY 10018 National Fire Protection Association, Inc.
1 Batterymarch Park
Quincy, MA 02269-9101
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.
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS
Water vaporis a by-product of gas combustion.An unvented room heater productes approximately one (1) ounce (30ml) of wter for every 1,000 BTU’s (.3KW’s) of gas input per hour.
Unvented room heaters are recommended as supplemental heat (a room) rather than a primary heat source (an entire house) .In most supplemental heat application, the water vapor does not create a problem. In most applications, the water vapor enhances the low humidity atmosphere experience during cold weather.
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.
3
FRESH AIR FOR
COMBUSTION AND
VENTILATION
WARNING: This heater shall not be installed in a
confined space |
or |
unusually |
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tight construction |
unless |
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provisions |
are |
provided |
for |
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adequate |
combustion |
and |
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ventilation |
air. |
Read |
the |
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follow ing |
ins tructions |
to |
insure proper fresh air for this and other fuel-burning appliances in your home.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code. NFPA 54/ANSI 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 (6×10-11 kg per pa-sec-m2) or less with openings gasketed or sealed and
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.
Confined and Unconfined Space
The National Fuel Gas Code ANSI 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 |
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t he |
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 |
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in a |
confined |
space |
or |
unusually |
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t ig ht |
c ons t ru c t ion |
unl es s |
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provisions |
are |
provided |
for |
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adequate |
combustion |
and |
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ventilation ai r. |
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* |
A d j o i n i n g |
r o o m s |
a r e |
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communicating only |
if |
there |
are |
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dooles |
passageways |
or ventilation |
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grills between them. |
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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 |
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or |
ventilation |
grills between |
the rooms. |
× |
× |
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1. |
Determine |
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the |
volume of |
the space (length width |
height). |
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× |
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cu.ft. (volume of space) |
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Length Width |
Height= |
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× |
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Example: Space size20ft. (length) |
× |
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16ft.( width) 8ft. (ceiling height)=2560cu. ft. (volume of space) |
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If |
additional ventilation to adjoining room |
is supplied |
with grills or openings, |
add the volume of these rooms |
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to the total volume of the space. |
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2. Divide the |
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space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support. |
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(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, ANSI Z223.1/NFPA 54, Air for Combustion and Ventilation, or applicable local codes.
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3. Add the Btu/Hr of all fuel burning appliances in the space. |
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Vent-free heater |
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Btu/Hr |
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Gas water heater* |
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Btu/Hr |
Example: |
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Gas furnace |
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Btu/Hr |
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Gas water |
heater |
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40,000 |
Btu/Hr |
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Vented gas heater |
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Btu/Hr |
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Vent |
free |
heater |
+ |
18,000 |
Btu/Hr |
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Gas Fireplace logs |
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Btu/Hr |
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Total |
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58,000 |
Btu/Hr |
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Other gas appliances* |
+ |
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Btu/Hr |
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Total |
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*Do not include direct-vent gas |
appliances. Direct-vent |
draws |
combustion |
air |
from the |
outdoors and |
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vents to the outdoors. |
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4. Compare the maximum Btu/Hr the |
space can support with |
the actual amount of Btu/Hr used. |
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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) 58,000 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. |
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B. Vent room directly to |
the outdoors. See |
Ventilation Air From Outdoors, page 6 . |
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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/ANSI 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.
Figure 2 -Ventilation Air from Inside Building
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VENTILATION AIR
Figure 3 -Ventilation Air from Outdoors
INSTALLATION
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or ducts: You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the 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/ANSI 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.
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NOTICE: |
This heater is |
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intended |
for |
use |
as |
supplemental |
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heat. Use this heater along with |
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your primary heating system. Do |
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not install this heater as your |
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primary |
heat |
source. If you have |
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a central heating system, you |
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may run system’s circulating |
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blower while using heater. This |
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will |
help |
circulate the |
heat |
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throughout |
the |
house. |
In the |
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event of a power outage, you can |
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use this heater as your primary |
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heat |
source. |
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WARNING: |
A qualified |
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service |
person |
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must |
install |
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heater. Follow all local codes. |
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CHECK GAS TYPE |
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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 equip-ment 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 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 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.
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CAUTION: |
This |
heater |
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creates |
warm air |
currents. |
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These |
currents |
move |
heat |
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to wall |
surfaces |
next |
to |
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heat er . |
Ins t alling |
heat er |
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next |
to |
vinyl |
or |
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cloth |
wall |
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c o v e ri ngs |
or |
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ope ra t i ng |
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heater |
where impurities |
(such as |
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tobacco smoke, aromatic |
candles, |
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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
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WARNING: |
Maintain the |
FASTENING HEATER TO WALL |
Attaching |
to |
Wall |
Anchor: This |
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minimum |
clearances |
shown |
Mounting Bracket |
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method |
allows |
you |
to attach |
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in Figure 4. |
If |
you |
can, |
The mounting bracket is located |
mounting bracket to hollow walls |
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provide greater clearances |
from |
on |
back panel of heater (see |
(wall areas between |
studs) or to |
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floor, |
ceiling, and |
joining wall. |
figure 6). It has been taped there |
solid |
walls |
(concrete |
or masonry). |
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for |
shipping. Remove mounting |
Decide |
which |
method |
better |
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bracket |
from |
back panel. |
suits your needs. Either method |
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will provide a |
secure |
hold |
for |
the |
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mounting bracket. |
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Marking Screw Locations |
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1. Tape mounting bracket to wall |
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where heater will be located. |
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Make sure mounting bracket is |
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level. |
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Figure 6 -Mounting Bracket |
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WARNING: |
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Maintain |
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Location |
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minimum |
clearances |
shown |
in |
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Removing Lower Front Panel Of |
Figure 8. If |
you can, |
provide |
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Heater. |
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greater |
clearances from floor |
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Figure 4 -Mounting Clearances As |
1. |
Remove |
two screws |
near |
and joining |
wall. |
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Viewed From Front Of Heater |
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bottom corners of front panel. |
2. |
Mark |
screw |
locations |
on |
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IMPORTANT: |
Vent-free |
2. |
Pull bottom of lower front panel |
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wall. (see |
Figure 8) |
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forward, then down (see Figure |
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heaters add moisture |
to |
the |
Note: |
Only |
mark |
last |
hole |
on |
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7). |
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air. Although this is beneficial, |
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each end of mounting bracket. |
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installing |
heater |
in |
rooms |
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Insert |
mounting |
screws |
through |
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without enough |
ventilation air |
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these holes only. |
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may |
cause mildew |
to |
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form |
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3. |
Remove |
tape and |
mounting |
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from too much moisture. See |
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bracket |
from |
wall. |
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Fresh |
Air |
for Combustion and |
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Ventilation, |
pages |
4 and 5. |
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INSTALLING THERMOSTAT |
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SENSING BULB |
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For T-Stat Models Only |
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1. Pull out the sensing bulb from the |
Figure 7 - Removing Lower Front |
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two clips located in the shippng |
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position according to the direction |
Panel of Heater |
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as shown by the arrow. There is no |
Methods For Attaching |
Mounting |
Model ML250HPA ML250TPA |
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need to take out the two bulb clips. |
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Bracket To Wall |
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2. Take out the bulb clip from the |
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hardware package and insert it into |
Only use last hole on |
each end |
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the square hole and then insert the |
of mounting bracket to attach |
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sensing bulb into the bulb clip (see |
bracket |
to |
wall. These |
two holes |
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Figure 5). |
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are |
16 |
inches apart |
from their |
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c ent ers . |
At tac h |
m ount ing |
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Figure 5 - Moving Thermostat
Sensing Bulb
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.
Model ML150HPA ML150TPA
Figure 8 - Mounting Bracket
Clearances
7
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 Wal l 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 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)
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 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).
INSTALLATION
IMPORTANT: Do not hammer key! For thick walls (over 1/2" thick) or solid walls, do not pop open wings.
Figure 10 - Popping Open Anchor
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 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 onto stand-out tabs on mounting bracket.
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).
Figure 12 - Installing Bottom
Mounting Screws
2. Mark screw locations on wall.
3.Remove heater from mounting bracket.
4.If installing bottom mounting screws into hollow or solid wall, install wall anchors.Follow steps
1 through |
4 under |
Attaching |
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To |
Wall |
Anchor |
Method. |
If |
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installing |
bottom |
mounting |
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screw |
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into |
wall |
stud, drill |
holes |
at |
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marked |
locations using 9/64" |
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drill |
bit. |
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5.Replace heater onto mounting bracket.
6.Place spacers between bottom mounting holes and wall anchor or drilled holes.
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 |
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holes . |
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8. Tighten both screws until heater is firmly secured to wall. Do not over tighten.
•Note: Do not replace lower front panel at this time. Replace lower front panel after making gas connections and checking for leaks (see pages 9 and 10).
8