Heatmaster HM2-IPI-ECO User manual

WARNING: FAILURE TO FOLLOW THESE INSTRUCTIONS CAREFULLY AND WITHOUT
ERROR OR FAILURE TO HEED ANY AND ALL WARNINGS IN THESE INSTRUCTIONS CAN
RESULT IN AN EXPLOSION, FIRE OR THE PRODUCTION OF CARBON MONOXIDE GAS
WHICH CAN CAUSE PROPERTY DAMAGE, BODILY INJURY OR DEATH.
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 telephone in your building.
• Immediately call your gas supplier from a neighbor’s telephone.
• 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 the
gas supplier.
This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is in-
stalled. Provisions for adequate combustion and ventilation air must be provided. Refer to
page 4.
This appliance is intended for supplemental heating.
ANSI Z21.11 2-2016 APPROVED / ANSI Z21.60-2017 CSA 2.26 2017
State and local codes may only allow operation of this appliance in a vented configuration. Check your local and state codes.
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.
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
IM-149
10/2018
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Installation and Operating Instructions for Natural & LP Gas
Unvented Gas Log Heater
HM2-IPI-ECO and HM2-MIL
18", 24" and 30/33" BURNER UNITS.
IMPORTANT: READ INSTRUCTIONS CAREFULLY BEFORE BEGINNING INSTAL-
LATION OF THIS ROOM HEATER.

Important safety information
1. Due to high temperatures, the heater should be located out of traffic and away from furniture and
draperies.
2. Children and adults should be alerted to the hazard of high surface temperature and should stay away
to avoid burns or clothing ignition.
3. Young children should be carefully supervised when they are in the same room as the heater.
4. Do not place clothing or other flammable material near the fireplace when the heater is in use.
5. Any safety screen or guard removed for servicing must be replaced prior to operating the heater.
6. Installation and repair should be done by a qualified service person.
7. To prevent malfunction and/or sooting, an unvented gas heater should be cleaned at least annually by a
professional service person. More frequent cleaning may be required due to excessive lint from carpet-
ing, etc. It is imperative that control compartments, burners and circulating air passageways be kept
clean.
8. CARBON MONOXIDE POISONING: Early signs of carbon monoxide poisoning are similar to the
flu with headaches, dizziness and/or nausea. If you have these signs, obtain fresh air immediately.
Have the heater serviced as it may not be operating properly.
9. The installation must conform with local codes or, in the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.1/NFPA54./
10. This unit complies with ANSI Z21.11.2a-2008 Unvented heaters and also complies with
ANSI Z21.60-2004 Decorative Vented appliances for Solid Fuel Burning fireplaces. State and local
codes may only allow operation of this appliance in a vented configuration. Check your state or
local codes. For vented operation, see “Vented Instructions” in this manual.
11. Do not install the heater in a bedroom or bathroom.
12. Correct installation of the logs, proper location of the heater and annual cleaning are necessary to
avoid potential problems with sooting. Sooting, resulting from improper installation or operation,
can settle on surfaces outside the fireplace. See log placement instructions for proper installation.
13. Avoid any drafts that alter burner flame patterns. Do not allow fans to blow directly into the fireplace.
Do not place a blower inside burn area of the firebox. Ceiling fans may create drafts that alter burner
flame patterns. Sooting and improper burning will occur.
14. 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 installation
guidelines.
15. Keep appliance area clear and free from combustible materials, gasoline and other flammable
vapors and liquids.
• Any change to this heater or its controls can be dangerous and void any warran-
ty.
• Do not allow fans to blow directly into fireplace. Avoid drafts that alter
burner flame patterns.
• Do not use a blower insert, heat exchanger insert or any other accessory not ap-
proved
for use with this heater.
• Improper installation or use of this heater can cause serious injury or death
from fire, burns, explosion or carbon monoxide poisoning.
WARNING
Page 2
Children and adults should be alerted to the hazard of high surface temperature
and should stay away to avoid burns or clothing ignition.

Do not use this room heater if any part has been under water. Immediately call a qualified service
technician to inspect the room heater and to replace any part on the control system and any gas
control which has been underwater.
This room heater is for installation in a solid fuel burning fireplace or listed unvented firebox enclo-
sure only.
A fireplace screen must be in place when the appliance is operating and, unless other provisions for
combustion air are provided, the screen shall have an opening (s) for introduction of combustion air.
Any glass door should be fully opened when the appliance is in operation.
Solid fuels shall not be burned in a fireplace in which an unvented room heater is installed.
Any outside air ducts and/or ash dumps in the fireplace should be permanently closed at time
of appliance installation.
Clearances around air openings of fireplace must be kept clear. Do not stack anything in
front of air vents or fireplace openings.
This appliance is equipped for (natural or Propane) gas. Field conversion is not
permitted. The appliance may be returned to the manufacture for conversion.
WARNING
This appliance is for installation only in a solid fuel burning masonry or UL 127 Factory-built
fireplace or in a listed unvented firebox enclosure. It has been design certified for these
installations. Exception: DO NOT install this appliance in a factory-built fireplace that includes
instructions stating it has not been tested or should not be used with unvented gas logs.
WARNING
Page 3
Important safety information cont
The installation of appliances designed for manufactured home or mobile home
installation must conform with Manufactured Home Construction and Safety Standard,
Title 24 CFR, Part 3280, in the United States, or when such standard is not applicable,
ANSI/NCSBCS A225.1/NFPA 501A, Manufactured Home Installations Standard.

PRODUCT SPECIFICATIONS
Page 4
Gas Log Size
Dimension
18" 24" 30/33"
Height of Front Opening 15"
15" 15"
Width of Front Opening
21 1/2" 26 1/2" 35 1/2"
Depth
14" 14" 14"
Width of Rear Opening 16” 21” 25”
MINIMUM SIZE FIREPLACE DIMENSIONS
LP 33,000 40,000 40,000
BTU Ratings 18" 24" 30/33”
NAT 34,000 40,000 40,000
BTU'S RATING
General Instructions
PROVISIONS FOR ADEQUATE COMBUSTION AND VENTILATION AIR
This heater shall not be installed in a confined space or unusually tight construction unless
provisions are provided for adequate combustion and ventilation air.
The National Fuel Gas Code ANSI Z223.1/NFPA54 defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000 Btu per hour (4.8m
3
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 that
50 cubic feet per 1,000 Btu per hour (4.8m
3
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.
Unusually tight construction is defined as construction where:
a) Walls and ceiling exposed to the outside atmosphere have a continuous water vapor retarder with
a rating of 1 perm ( 6 x 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 sealant are applied to areas such as joints around windows 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 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 venti-
lation air by one of the methods described in the “National Fuel Gas Code, ANSI Z223.1/NFPA
54, the international Fuel Gas Code” or applicable local codes.
Keep burner and control compartment clean. See Installation and Operating Instructions ac-
companying heater.
If the area in which the heater may be operated does not meet the required volume for indoor com-
bustion air, combustion and ventilation air shall be provided by one of the methods described in
the “National Fuel Gas Code, ANSI Z223.1/NFPA 54, the international Fuel Gas Code” or appli-
cable local codes.
WARNING

General Installation Information
Figure 1. Example of large room with 1/2 wall
divider.
The following formula can be used to determine the maximum heater
rating per the definition of confined space:
BTU/HR= (L 1 + L 2 ) FT X (W)FT X (H)FT X 1000
50
Example: Refer to Figure 1. Two (2) connecting rooms with and open
area between , with the following dimensions.
L 1 = 15 1/2
L 2 = 12 ’
W = 12 ’
H = 8 ’
(15 1/2 + 12 ) x (12) x (8) x 1000 = 52800 btu./hr
50
If there was a door between the two rooms the calculation would be based
only on the room with the heater.
(15 1/2 ) x (12) x (8) x 1000 = 27760 btu./hr
50
Figure 2. Sidewall
and Ceiling Clearances.
The dimensions shown in Figure 2 and defined in the fireplace manufacturer’s instructions are minimum
clearances to maintain in installing this heater. Left and right clearances are determined when facing the
front of the heater.
When heater is installed into a unvented firebox, minimum clearances as specified by the unvented fire-
box manufacturer must be met.
Follow these instructions carefully to ensure safe installation. Failure to follow instructions exactly can
create a fire hazard.
WARNING
Sidewall and ceiling clearances
The sides of the fireplace opening must be at least 16” from any combustible wall. The ceiling must be at
least 42” from the top of the fireplace opening.
Left Side
Front
Right Side
L2
L1
H
W
Counter
Fireplace
42"
16"16"
Page 5

Figure 5. Minimum Mantel Clearance with No
Hood.
Example: The bottom of the mantel may project
from the wall a maximum of 10” at a
minimum of 28” above the opening.
Figure 6.
Is an example of an unsafe mantel installation. This
mantel projects 4” at 8” above the opening, exceeding
the maximum acceptable distance of 2-1/2”. The
mantel also projects 7” at 14-1/2” above the opening,
exceeding the maximum acceptable distance of
6”.
If your mantel profile is unsafe, you may either:
Raise the mantel to an acceptable height or,
Remove the mantel.
Figure 4.
Minimum Mantel Clearance with Hood.
Example: A mantel may project from the wall
a maximum of 2-1/2” at a minimum of 8”
above the opening and a maximum of 6” at
a minimum of 14-1/2” above the opening.
Figure 3.
Minimum Mantel Clearance with No Hood.
Example: The bottom of a mantel may project from
the wall a minimum of 14” above the opening. The
top side of the mantel may project a maximum of
6” at a minimum of 20-1/2” above the opening.
28"
245/8
201/2
14
10
8
6
21/2
28"
12
26"
12
221/2"
185/8
141/2
8"
10
8
6
21/2
4"
141/2"
8"
7"
6"
21/2"
Heat resistant
material
Hood
Heat resistant
material
Heat resistant
material
10” and Less
Mantel
Minimum of 8” heat resistant
material Hood
Page 6
CLEARANCE/ HEIGHT REQUIREMENTS

CLEARANCE/ HEIGHT REQUIREMENTS cont
Figure 7.
Measuring heat resistant material for mantel.
Heat resistant material ( minimum requirements) with
wooden mantel or other combustible projection:
To install the heater with a wooden mantel, shelf or
other combustible projection above, first measure
the heat resistant material shown in Figure 7.
12” or more Hood not required. Observe profiles
(side elevations) shown in Figure 3. Hood not required. Observe profiles (side elevations) shown in Figure 5.
8” to less than 12” Install hood and observe profiles
shown in Figure 4. Or extend heat
resistant material to at least 12”
observe profiles shown in Figure 3.
Install hood and observe profiles
shown in Figure 4. Or extend heat
resistant material to at least 12”
observe profiles shown in Figure 5.
Less than 8” Extend heat resistant material to at
least 8” . Install hood and observe
profiles shown in Figure 4. Or
extend heat resistant material to at
least 12” and observe profiles shown
in Figure 3.
Extend heat resistant material to at
least 8” . Install hood and observe
profiles shown in Figure 4. Or
extend heat resistant material to at
least 12” and observe profiles shown
in Figure 3.
FLOOR CLEARANCE
This gas log heater must be installed at least 5” above any combustible flooring material, such as
carpeting or tile, which is closer than 14” to the base of the fireplace. This minimum distance must be
maintained from the top surface of carpeting, tile, etc. Refer to Figure 8.
8"ormoreof
heatresistant
material
8” or more of heat
resistant material
Heater in Fireplace
or Firebox
5"Minimum
14"Minimum
Figure 8.
Minimum
clearance above
combustible
flooring.
Figure 9.
Minimum
clearance above
combustible
flooring with
non-combustible
material installed
at base of fireplace.
This gas log heater may be installed nearer to the floor if a minimum of 14” of noncombustible material
such as slate or marble is installed between the base of the fireplace and the combustible flooring.
Refer to Figure 9.
Page 7
Combustible
material
5” Minimum
14” Minimum
Heat Resistant Material Requirements for safe installation with wooden mantel, shelf
measurement or other combustible projection.
Combustible
material

FIREPLACE PREPARATION
Before fully installing the unit:
• Turn OFF the gas supply to the fireplace or firebox.
• Seal any fresh air vents and/or ash clean-out doors located on the floor or wall of the fireplace. If left
unsealed, drafting may cause pilot outage or sooting. Use a heat resistant sealant. Do not seal the
chimney flue damper.
OPTIONALVENTED APPLICATIONS
Manual and Remote controlled gas logs may be installed as a vented decorative log set in compliance with
ANSI Z21.60 and National Fuel Gas Code, Section 6.6. Since the gas logs are operated with the damper
open, non-combustible material and minimum mantel requirements do not apply.
Before installing the appliance:
• Turn OFF the gas supply to the fireplace or firebox.
• Have the fireplace floor and chimney professionally cleaned to remove ashes, soot, creosote or other
obstructions. Have this cleaning performed annually after installation.
• Seal any fresh air vents and/or ash clean-out doors located on the floor or wall of the fireplace. If left
unsealed, drafting may cause pilot outage or sooting. Use a heat resistant sealant. Do not seal the
chimney flue damper.
Install and operate the appliance as directed in this manual.
Damper Stop Installation:
Damper Stop sold separately.
A damper stop must be provided with the unit.
Contact your dealer to obtain one. The damper
stop must be installed as shown in Figure 10 to pre-
vent full closure of the fireplace damper blade and
provide a minimum 29 sq. in. flue opening.
Before installing in a solid fuel burning fireplace, the chimney flue
and firebox must be cleaned of soot, creosote, ashes and loose paint by a
qualified chimney cleaner.
This appliance is for installation only in a solid fuel burning fireplace
(masonry of manufactured fireplace) with a working flue and
constructed of non-combustible material.
Figure 10.
Damper stop installation.
Damper Stop sold separately.
WARNING
WARNING
Page 8

MAINTENANCE OFTHE SYSTEM
Under normal use this appliance will require only limited cleaning. Constant airflow through this appliance
will cause dust to collect on the burners, base and logs. An excessive build up of dust can cause the
pilot and burners to operate incorrectly and produce high levels of carbon monoxide, a poisonous gas.
To clean the burner and base, turn the control to OFF and allow the system to cool down. Remove top logs
and front log very carefully. Vacuum or brush away all dust and lint from the system. Do not use any
cleaning fluids to clean the logs or any other part of the appliance.
Replace the logs in their proper positions and relight the pilot. At least once a year, the log set and all gas piping
should be inspected by a qualified service person.
WARNING
When used without fresh air, appliance may give off carbon monoxide, an odorless, poisonous gas.
OPEN WINDOW AN INCH OR TWO FOR FRESH AIR WHEN USING APPLIANCE.
This appliance has a Pilot Light Safety System that turns the appliance off if enough fresh air is not available.
DO NOT TAMPER WITH PILOT LIGHT SAFETY SYSTEM.
If appliance shuts off, do not re-light until you provide fresh air. If the appliance continues to shut off,
have it serviced by a qualified technician. Keep burner and control compartment clean.
CARBON MONOXIDE POISONING MAY LEAD TO DEATH.
Early signs of carbon monoxide poisoning resemble the flu, with headache, dizziness and/or nausea.. If you experience any
of these symptoms, the appliance may not be working property. Get fresh air at once! Have appliance serviced by a
qualified service technician.
Some individuals, pregnant women, persons with heart or lung disorders, anemia, those under the
influence of alcohol or at locations of high altitudes are more likely to be affected by carbon monoxide than others.
Due to high temperatures, this appliance must be located out of traffic and away from furniture and draperies.
Adults and specially young children should be alerted to the hazard of high surface temperatures and
should be kept away to avoid burns or clothing ignition.
Young children should be carefully supervised when in the same room as the appliance.
Any safety screen or guard removed for servicing the appliance must be replaced prior to operating the appliance.
Do not place clothing or other flammable material on or near the appliance.
Installation and repair should only be done by a qualified service technician.
The appliance should be inspected before use and at least once a year by a qualified service technician.
More frequent cleaning may be required due to excessive lint from carpeting, bedding or other materials.
It is imperative that control compartments, burners and circulating air passageways of this appliance
be kept clean.
WARNING: DO NOT allow fans to blow directly into fireplace. Avoid any drafts that alter burner flame patterns.
WARNING: DO NOT use a blower insert, heat exchanger insert or other accessories not approved for use with this heater.
Page 9

TROUBLESHOOT-
Turn appliance OFF and allow to cool before servicing. Only a qualified service
person should service and/or repair the heater.
WARNING
Note: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
Page 10
(Millivolt unit only)
When igniter is pushed there is no
spark at the ODS/pilot.
1. Igniter electrode positioned
wrong.
2. Igniter electrode is broken.
3. Igniter electrode not
connected to igniter cable.
4. Igniter cable pinched or wet.
5. Broken igniter cable.
6. Bad piezo igniter.
1. Replace igniter.
2. Replace igniter.
3. Reconnect igniter cable.
4. Free igniter cable if pinched
by any metal or tubing.
5. Replace igniter cable.
6. Replace piezo igniter.
Appliance produces unwanted
odors. 1. Appliance burning vapors from paint, hair spray, glues,
etc.
2. Gas leak.
1 Ventilate room. Stop using
odor causing products while
heater is in use.
2. Call gas company.
Appliance shuts off during use 1. Not enough fresh air is
available for ODS/pilot to
operate.
2. Low gas line pressure.
3. ODS/pilot is partially clogged.
4. Defective thermocouple.
(Millivolt only)
1. Open window and/or door for
ventilation.
2. Contact local gas company.
3. Clean ODS/pilot.
4. Have thermocouple checked
by qualified person.
Gas odor even when control knob
is in the OFF position. 1. Gas leak. 2. Control valve defective 1. Call gas company. 2. Replace control valve.
(Millivolt unit only)
When igniter is pushed there is a
spark at the ODS/pilot, but no
ignition.
1. Gas supply turned off or
shutoff valve closed.
2. Control knob not in pilot
position.
3. Control knob not pressed in
while in PILOT position.
4. Air in gas lines when installed.
5. ODS/pilot is clogged.
1. Turn on gas supply or open
shutoff valve.
2. Turn control knob to PILOT
position.
3. Press in control knob while
turning to PILOT position.
4. Continue holding down
control knob. Repeat igniting
operation until air is removed.
5. Replace ODS/pilot assembly
or get it serviced.
HM2 MILLIVOLT

TROUBLESHOOTING
(Millivolt unit only)
ODS/pilot lights, but flame goes out
when control knob is released.
1. Control knob not fully pushed in.
2. Control knob not pressed in
long enough.
3. Manual shut off valve not fully
open.
4. Thermocouple connection loose
at the control valve.
5. Pilot flame not touching
thermocouple, which allow the
thermocouple to cool, causing pilot
flame to go out. This problem
could be caused by either low gas
pressure or a dirty or partially
clogged ODS pilot.
6. Thermocouple damaged.
7. Control valve damaged.
1. Press in control knob fully.
2. After ODS/pilot lights, keep control
knob pressed in for 30 seconds.
3. Fully open manual shutoff valve.
4. Hand tighten until snug, then tight-
en 1/4 turn more.
5. Contact your local gas company or
clean the pilot.
6. Replace thermocouple.
7. Replace control valve.
Burner will not light after ODS/pilot
is lit. 1. Burner ports are clogged. 2. Inlet gas pressure too low.
3. Control knob not in the “on” position.
4. Bad thermopile
5. Pilot clogged.
1. Clean burner ports.
2. Contact qualified service person.
3. Turn control knob to “on” position.
4. Replace thermopile.
5. Clean pilot.
Burner backfires during combustion. 1. Manifold pressure is too low.
2. Burner clogged.
1. Contact local gas company.
2. Clean burner tube.
Odor during initial operation. 1. New logs . 1. Allow to burn several hours.
Heater produces a whistling
noise when burner is lit. 1. Turn control knob (Millivolt) to high position or remote to high position (IPI)
when burner is cold.
2. Air in the gas line.
3. Dirty or partially clogged burner
orifice.
4. Bad burner orifice.
1. Turn control knob (Millivolt) to low
position or remote to low position
(IPI) and let warm up for a minute.
2. Operate burner until air is removed
from the gas line. Have gas line
checked by local gas company.
3. Clean burner or replace burner
orifice.
4. Replace burner orifice.
No gas to pilot. 1. LP regulator shut down due to inlet
pressure being too high.
2. Gas is cut off.
3. Air in pilot gas line.
1. Verify LP tank regulator is
installed and set at 10” to 11”
W.C.
2. Verify gas is on.
3. Refer to lighting instructions.
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
Page 11
HM2 MILLIVOLT Cont’

TROUBLESHOOTING
ODS pilot lights but pilot flame goes
out before burner lights. 1. Gas shutoff valve not fully open. 2. Missing or weak batteries at power sup-
ply box or remote.
3. Thermocouple circuit between the ODS
pilot and control module is loose or
damaged.
4. Pilot flame is not touching thermocou-
ple.
5. Thermocouple damaged.
6. Control valve damaged.
1. Fully open gas shutoff valve.
2. Replace batteries.
3. Check thermocouple terminal con-
nection at the control module.
4. Clean ODS pilot with canned air or
call service technician.
5. Replace ODS pilot assembly.
6. Replace control valve.
Burner system lights from the remote
but not from the switch. 1. Switch cable disconnected or broken. 2. Connect or replace the switch or cable.
Produces unwanted odors 1. Heater burning vapors from paint, hair
spray, glues, cleaners, chemicals, new
carpet, etc.
2. Low fuel supply (LP only).
3. Gas Leak (see warning on front page).
1. Open window to ventilate room.
Stop using odor causing products
while gas logs are running.
2. Call LP gas company.
3. Turn off gas. (see warning on front
page).
Log set cycles to pilot, but room tem-
perature drops to a lower than ideal
level before log set comes back on.
1. Thermostat remote control is too close
to heater.
2. Air in the gas line.
3. Dirty or partially clogged burner
orifice.
4. Bad burner orifice.
1. Move hand-held remote control
farther away from heater.
2. Operate burner until air is removed
from the gas line. Have gas line
checked by local gas company.
3. Clean burner or replace burner
orifice.
4. Replace burner orifice.
Delayed ignition of burner. 1. Manifold pressure is too low or pilot
and or burner need cleaning.
1. Contact service technician.
Either the remote or switch are
pressed to start the burner ignition
sequence and there is no function or
response.
1. Missing or weak batteries at power
supply box or remote.
2. Box is unplugged.
3. The switch cable is not plugged into the
module.
4. Control valve wiring harness not
plugged in or not in proper position.
5. Remote not communicating with the
control module.
6. Igniter cable is not connected.
7. Broken igniter cable
8. Igniter electrode positioned wrong.
9. Igniter electrode is broken.
1. Check batteries and replace if need-
ed. Set the multimeter to DC volt-
age, initiate the ignition sequence
and observe the voltage while the
system is lighting (under load). The
system will not function under 3.8
volts and batteries should be re-
placed if the voltage is under 40
volts.
2. Plug battery box into module.
3. Plug switch cable into module.
4. Check to see that the control valve
wiring harness (blue connector) is
plugged into the module correctly.
5. Remote may need to go through the
“Learn” process with the module.
6. Check the igniter connection at both
the control module and the ODS
pilot.
7. Replace igniter cable.
8. Replace ODS pilot assembly.
9. Replace ODS pilot assembly.
Burner will not light after ODS/pilot
is lit. 1. Inlet gas pressure too low. 1. Call for service.
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
Page 12
HM2 IPI ECO

TROUBLESHOOTING
When igniter button is pressed on the
remote or switch pad, the pilot sparks
but there is no ignition.
1. Gas supply turned off or equipment
shutoff valve is closed.
2. Air in gas lines.
3. Thermocouple circuit between the con-
trol valve and the control module is
open.
4. No gas to the ODS pilot.
5. Depleted LP gas supply.
6. Valve cable is disconnected or broken.
7. ODS pilot is clogged.
8. Gas appliance regulator is not correct.
1. Turn on the gas supply or open
equipment shutoff valve.
2. Continue turning the burner system
ON and OFF. Repeat igniting opera-
tion until air is removed. This may
take several attempts.
3. Check the thermocouple at the con-
trol valve and also at the control mod-
ule. The thermocouple connection at
the control valve should be hand tight
plus 1/4 to 1/2 turn. Check the ther-
mocouple terminal connection at the
control module.
4. If no flow is present at the gas valve,
check to see if all shut off valves are
open. Verify proper pressure is sup-
plied to the valve. Excessive pressure
can lock out the appliance’s regulator.
Contact you LP gas supplier.
5. Connect valve cable correctly.
6. Clean ODS pilot with canned air or
replace the pilot.
7. Replace the regulator.
Low battery power in remote. 1. Batteries are weak.
1. Replace batteries in remote.
Slight smoke or odor during initial
operation. 1. Residues from manufacturing processes and logs curing.
1. Problem will stop after a few hours.
Moisture/condensation noticed on
windows. 1. Not enough combustion/ventilation air. 1. Refer to Air for Combustion and Ventilation requirements (page 4).
Module audible alert beeps once per
second. 1. Pilot does not light within trial period 1. Cycle on/off switch or Remote to off. Reset to On.
Module audible alert beeps twice per
second. 1. Pilot is proven then lost up to 3 times without being reset.
1. Module will beep for 5 minutes.
Place switch in off position once
beeping has stopped. Reset to on.
Module audible alert beeps constantly. 1. System cycled off and back on within
30 seconds. Ground wire loose. 2. Cycle system to off and wait 30 sec- onds to relight. Check that the ground
wire is tight.
Module audible alert beeps 4 times
every 2 seconds. 1. Module internal temperature has ex- ceeded 170 degrees. 1.Cycle system to off and allow module to cool below 160 degrees.
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
Page 13
HM2 IPI ECO Cont’

FOR YOUR SAFETY READ BEFORE LIGHTING
If you do not follow these instructions exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
WARNING
A. This appliance is equipped with an electronic ignition pilot. This pilot lights itself with either the
manual on/off button or with the remote control transmitter that is provided.
B. 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.
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 instruc-
tions.
♦ If you cannot reach your gas supplier, call the fire department.
C. Use only your hand to push in the switch buttons. Never use tools. If the buttons will not push in by
hand, do not try to repair it. Call a qualified service technician. Force or attempted repair may result
in fire or explosion.
D. Do not use room heater if any part has been under water. Immediately call a qualified service techni-
cian to inspect the room heater and to replace any part of the control system and any gas control
which has been under water.
TO TURN OFF GAS TO APPLIANCE
1. Press the off button on the remote control. If not using a remote control press the on/off rocker switch.
2. Close the appliance shutoff valve.
LIGHTING INSTRUCTIONS
1) STOP! Read safety information previously listed above.
(2) Insure main gas supply is turner on to the appliance.
(3) Wait 5 minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP!
Follow “B” in the safety information above. If you do not smell gas, go on to the next step.
(4) To start pilot ignition manually, move ON/OFF switch to on. After a few seconds pilot will spark and ignite
pilot and burner flame to high flame position.
(5) For low flame move HI/LO switch to on and flame will move to low position. To return to high flame move
HI/LO switch back to HI and flame will go back to high position.
(6) To turn burner off move ON/OFF switch to off position.
(7) Remote will operate system manually or thermostatically. To light manually press ON button once. Press H/L
button to cycle between Hi, Med, and Low settings. Press OFF button to cut system off.
(8) To operate system thermostatically, press MODE button and the word Room will appear on the screen. Press
Set button to achieve desired operational temperature.
(9) If you start system remotely with ON button while in thermostat mode, remote reverts back to manual func-
tion and you will have to reset mode button to return to thermostatic function.
(10) Pressing the Continuous Pilot button with unit off will light pilot only and pilot will continue to burn until
system gets command for main burner operation. Pressing Continuous Pilot button again will cut pilot off and
return system back to pilot spark ignition function. Note: Wait 5 minutes before trying to relight pilot with spark
ignitor or remove battery power for 30 seconds.
ECO Electronic Ignition

FOR YOUR SAFETY READ BEFORE LIGHTING
A. This appliance is equipped with a push button piezo ignition device, which can be used to light the pilot. If the piezo
fails to ignite the pilot, then follow the instructions for lighting pilot with match.
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.
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.
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, do not try to repair it. Call a qualified service technician. Force or attempted repair may result in fire or
explosion.
D. Do not use this room heater if any part has been under water. Immediately call a qualified service technician to inspect
the room heater and replace any part of the control system and any gas control that has been under water.
LIGHTING INSTRUCTIONS
1.STOP! Read the safety information previously listed above.
2. Turn main gas control knob (FIG. 7) clockwise to the “OFF” position.
3. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP!
Follow “B” in the safety information above on this label. If you don’t smell gas, go to the next step.
4. Locate pilot - mounted on the inside of the right hand bracket that holds the burner in place, just behind the front part
of the burner. (FIG. 6)
5. Depress main control knob (FIG. 7) and turn counterclockwise to the “PILOT” position. With main control
knob (FIG. 7) at “PILOT”, depress until it stops and press on the igniter push-button several times. (FIG. 7) This will
cause a spark at the pilot burner, which will ignite the pilot flame. Continue to hold the main control knob (FIG. 7) in
for about (1) minute after the pilot is lit. Release knob and it will pop back out. Pilot should remain lit. If it goes out,
repeat steps 1 through 5.
♦ If the knob does not pop out when released, stop and immediately call your service technician or gas supplier.
♦ LIGHTING PILOT WITH MATCH: Turn main control knob (FIG. 7) to the “PILOT” position. Place a lit match at
the pilot burner, then push the main control knob in. Continue to hold the control knob in for about one (1) minute
after the pilot is lit. Release knob and it will pop back out. Pilot should remain lit. If it goes out, repeat the above step.
♦ If the pilot will not stay lit after several tries, turn the gas control knob (FIG. 7) to “OFF” and call your service
technician or gas supplier.
6. Depress main control knob (FIG. 7) and turn counterclockwise to the “ON” position. Adjust heat output to the
desired level by turning the HI/LOW control knob.
TURN OFF GAS TO APPLIANCE
Turn main gas control knob (FIG. 7) clockwise to the “OFF” position. Do not force.
WARNING: If you do not follow these instructions exactly a fire or explosion may result causing property
damage, personal injury, or loss of life.
PILOT BURNER
IGNITOR
Page 15
MILLIVOLT

UNIT PLACEMENT
Place the entire unit system in the center of the fireplace to allow proper air flow on all sides of the unit.
GAS PIPING AND GAS PRESSURE REQUIREMENTS
Check the type of gas that is supplied to your fireplace. Use only the gas type indicated on the heat-
er’s rating plate. If the gas listed on the plate is not your type of gas supply, DO NOT INSTALL
THE SYSTEM. Contact your dealer.
All gas piping must be installed to comply with local and National Fuel Gas codes. Do not use
flexible hose unless it is allowed by local codes. Compounds used on threaded joints of gas
piping must be resistant to the action of LP gas.
The gas supply line to the fireplace should not be less than 1/2” inside dimension.
GAS PRESSURE: Minimum inlet gas supply pressure must be 7.0" WC for natural gas or
11" WC for LP gas for the purpose of input adjustment. Maximum inlet gas supply pressure
must not exceed 10.5" WC for natural gas, or 13" WC for LP gas. The gas line supplying the
appliance must be of sufficient size to furnish the appropriate supply pressure to the
appliance when being operated on the high setting. Manifold pressure for natural gas is 4”
WC and 10” WC for LP gas.
Include a manual shutoff valve and union in the line so the appliance may be disconnected for
servicing. Provide a 1/8” NPT plugged tapping for pressure gauge connection between shutoff
valve and the appliance. Test for leaks using a soap and water solution after completing the
connection. DO NOT USE AN OPEN FLAME!
The appliance and its appliance main gas valve must be disconnected from the gas
supply piping system during any pressure testing of that system at test pressures in
excess of ½ psig (3.5kPa). The appliance must be isolated from the gas supply piping
system by closing its equipment shut-off valve during any pressure testing of the gas
supply piping system at test pressures equal to or less than ½ psig (3.5kPa).
WARNING
FLAME APPEARANCE
Periodically check the pilot and burner flame:
The pilot flame must always be present when the heater is in operation. It should just touch the top
of the thermocouple tip.
Flames from the pilot should be visually checked as soon as the heater is installed. Periodically
check the flames visually during operation. See Figure 18.
If the pilot flame does not touch the thermocouple, then the main burner cannot function reliably.
Refer to Figure 19 for incorrect shape of the pilot flame.
Figure 18.
Correct
appearance
of pilot flame.
Figure 19.
Incorrect
appearance
of pilot flame.
Page 16

PLACEMENT OF LAVA GRANULES
Pour the lava granules on the floor of the fireplace in front of the bottom burner.
NOTE: These granules are for use only to cover the fireplace floor and are not to be used in or on the burner itself.
Do not place lava rock on or near the burner. Place in front and
around sides of the burner, not on it.
CONTACT WITH BURNER CAN CAUSE CARBON MONOXIDE.
Page 17
Periodically clean loose particles, dust and lint from pilot and front and rear
burner ports. Clean burner air intake holes. Failure to do so may result in soot-
ing and poor combustion.
Logs and volcanic rock must be positioned correctly. Failure to do so may re-
sult in sooting and poor combustion.
“All previously applied loose material must be removed prior to reapplication”.
Do not operate ceiling fans while using this heater. Drafts from fans may alter
flame pattern, which could result in sooting and poor combustion.
If unit is installed in an existing fireplace, do not operate heater with glass doors
closed. This will result in sooting and poor combustion.
WARNING
INSTALLER: Please be sure the homeowner understands these key points.

Regular Oak 18” Log Part Numbers:
444
409
429
430
432
431
Regular Oak 24” Log Part Numbers
424
409
426
427
410
408
428
Page 18

Regular Oak 33” Log Part Numbers:
411
408
409
405
406
410
274
407
Page 19

Split Oak 18” Log Part Numbers:
438
415
439 440
416
441
Split Oak 24” Log Part Numbers:
415
438
435 436
416
437
Page 20