Comfort Glow HFVMR18, HFVMR24 Owner's Operation And Installation Manual
For more information, visit www.desatech.com
For more information, visit www.desatech.com
RGA 2-72
NATURAL GAS LOG
VENTED DECORATIVE APPLIANCE
OWNER’S OPERATION AND INSTALLATION MANUAL
APPROVED
TESTED AND
LISTED BY
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.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a
qualified installer, service agency, or the gas supplier.
Burner Models
HFVMR18 and
HFVMR24
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 the gas supplier.
WARNING: This appliance is for
installation only in a solid-fuel burning masonry or UL127 factory-built
fireplace, constructed of noncombustible material, and connected to
a working flue. (See page 4 for minimum flue opening.)
WARNING: This is a gas-fired appliance. It uses air (oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventilation air must be provided. Refer to
Combustion and Ventilation
section on page 4 of this manual.
This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Save this manual for future reference.
Save this manual for future reference.
Air for
TABLE OF CONTENTS
SAFETY INFORMATION
2
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
UNPACKING............................................................................... 3
PRODUCT IDENTIFICATION ..................................................... 3
LOCAL CODES........................................................................... 3
OPTIONAL PRODUCT FEATURES ........................................... 4
AIR FOR COMBUSTION AND VENTILATION ........................... 4
INSTALLATION ........................................................................... 4
OPERA TING APPLIANCE .......................................................... 8
SAFETY INFORMATION
WARNINGS
WARNING ICON G 001
WARNING: This product contains and/or generates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.
WARNING: Keep flue open when operating unit.
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or service this log set. Improper use of this log set can cause
serious injury or death from burns, fire, explosion,
electrical shock, and carbon monoxide poisoning.
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 log set may not be working properly. Get
fresh air at once! Have log set serviced. Some people are more
affected by carbon monoxide than others. These include pregnant
women, people with heart or lung disease or anemia, those under the
influence of alcohol, and those at high altitudes.
Natural Gas: Natural gas is odorless. An odor-making agent is
added to the gas. The odor helps you detect a gas leak. However, the
odor added to the gas can fade. 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 log set.
WARNING: Any change to this log set or its
controls can be dangerous.
CLEANING AND MAINTENANCE .............................................. 9
REPLACEMENT PARTS ............................................................ 9
PARTS CENTRALS .................................................................... 9
TROUBLESHOOTING .............................................................. 10
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 12
OWNER’S REGISTRATION FORM.......................................... 15
ACCESSORIES ........................................................................ 17
WARRANTY INFORMATION ...................................... Back Cover
1. This appliance, as supplied, is only for use with the type of gas
indicated on the rating plate. This appliance is convertible for
use with propane/LP, using the GA9050 or GA9150 pilot kit.
2. 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
3. Never install the log set
• in a recreational vehicle
• where curtains, furniture, clothing, or other flammable ob-
jects are less than 42 inches from the front, top, or sides of
the log set
• in high traffic areas
• in windy or drafty areas
4. 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. Creosote will ignite if highly heated. Inspect chimney flue for damage. If damaged, repair flue before operating heater.
5. You must operate this log set with a fireplace screen in place.
Make sure fireplace screen is closed before running log set. If the
fireplace has glass doors, they must remain fully OPEN while
this log set is in operation.
6. This log set is designed to be smokeless. If logs ever appear to
smoke, turn off appliance and call a qualified service person.
Note:
During initial operation, slight smoking could occur due
to log curing and the burning of manufacturing residues. You
may wish to add more ventilation by opening a window.
7. To reduce the creation of soot, follow the instructions in Clean-
ing and Maintenance, page 9.
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901915-01B
SAFETY INFORMATION
UNPACKING
PRODUCT IDENTIFICATION
LOCAL CODES
3
3
SAFETY INFORMATION
Continued
8. Do not allow fans to blow directly into the fireplace. Avoid
any drafts that alter burner flame patterns. Ceiling fans can
create drafts that alter burner flame patterns. Altered burner
patterns can increase sooting.
9. Do not use a blower insert, heat exchanger insert or other accessory not approved for use with this log set.
10. This log set needs fresh, outside air ventilation to run properly .
See Air for Combustion and Ventilation, page 4.
11. Do not run log set
• where flammable liquids or vapors are used or stored
• under dusty conditions
12. Do not burn solid fuel in the fireplace after installing the log
set. Do not use this log set to cook food or burn paper or other
objects.
13. Log set becomes very hot when in use. Keep children and adults
away from hot surface to avoid burns or clothing ignition. Log
set will remain hot for a time after shutdown. Allow surface to
cool before touching.
14. Carefully supervise young children when they are in the room
with log set.
15. Do not use appliance if any part has been exposed to or under
water. Immediately call a qualified service technician to inspect
the room appliance and to replace any part of the control system (if using GA9050 or GA9150) and any gas control which
has been under water.
16. To help prevent breakage, new logs must be broken-in (see
Curing Logs, page 9).
17. Turn log set off and let cool before servicing, installing, or repairing. Only a qualified service person should install, service, or repair log set.
UNPACKING
CAUTION: Do not remove the data plates from the
burn er pan. The d ata plates contain important warranty and safety information.
PRODUCT IDENTIFICATION
Burner Manifold
Right Side Burner
Grate
Burner
Pan
Left Side
Burner
Figure 1 - Product Identification (HFVMR24 Shown)
Burner Inlet
Fitting
Hearth Kit Model: _______________________
Serial Number: _________________________
Log Set Model: HFVMR18 or HFVMR24
LOCAL CODES
Install and use log set with care. Follow all local codes. In the absence
of local codes, use the latest edition of The National Fuel Gas Code,
ANSI Z223.1/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
1. Remove logs, hearth kit, pan materials, and hardware from
carton.
2. Remove all protective packaging applied to logs and base for
shipment.
3. Check all items for any shipping damage. If damaged, promptly
inform dealer where you bought the product.
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901915-01B
OPTIONAL PRODUCT FEATURES
4
AIR FOR COMBUSTION AND VENTILATION
INSTALLATION
Flue Opening Specifications
OPTIONAL PRODUCT
FEATURES
ON/OFF SAFETY VALVE/PILOT KIT AND
PROPANE/LP CONVERSION
An optional valve/safety pilot kit with a piezo ignitor is available for
this appliance. This system requires no matches, batteries, or other
sources to light. You must use this optional system for LP conversion. See Accessories, page 17.
REMOTE CONTROL READY (MILLIVOLT)
SAFETY VALVE/PILOT KIT
An optional millivolt valve/safety pilot kit with a piezo ignitor is
available for this appliance. This system requires no matches,
batteries, or other sources to light. This system may be connected to
a wall switch or hand-held wireless remote control. See Accesso-
ries, page 17.
REMOTE CONTROL ACCESSORIES
There is an optional hand-held ON/OFF remote control that can be
purchased separately for this log set. You must use the millivolt
valve/safety pilot kit to use remote accessories with this appliance.
See Accessories, page 17.
A wall switch is also available for this appliance. You must use the
millivolt valve/safety pilot kit to use the wall switch with this
appliance. See Accessories, page 17.
AIR FOR COMBUSTION AND
VENTILATION
WARNING: This appliance 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.
INSTALLATION
CAUTION: Do not remove the data plates attached
to the burner pan. The data plates contain important
warranty and safety information.
WARNING: 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. Creosote will ignite if highly heated.
A dirty chimney flue may create and distribute soot
within the house. Inspect chimney flue for damage. If
damaged, repair flue before operating heater.
NOTICE: Installation, service, and repair of this appliance must be performed by a qualified installer,
service agency, company or gas supplier experienced with this type of gas appliance. Only factory
authorized components listed in these instructions
may be used in accordance with the manufacturer’s
instructions and all codes and requirements of the
authority having jurisdiction. Any modifications to
this kit, or use of unauthorized components or accessory items will void the manufacturer’s warranty, and
may result in a hazardous condition.
FLUE OPENING SPECIFICATIONS
Note:
This vented appliance must be installed only in a solid-fuel
burning fireplace with a working flue and constructed of noncombustible material.
The charts in Figure 2, page 5 indicate technical information
regarding the installation of your gas log set. Please make sure that
all of the specifications shown are applicable before installation is
attempted.
The fireplace must include a working flue and venting system with
the minimum openings shown in the Figure 2, page 5.
Today’s homes are built more energy efficient than ever. New
materials, increased insulation, and new construction methods help
reduce heat loss in homes. Home owners weather strip and caulk
around windows and doors to keep the cold air out and the warm air
in. During heating months, home owners want their homes as airtight
as possible.
While it is good to make your home energy efficient, your home
needs to breathe. Fresh air must enter your home. All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances
draw air from the house to operate. You must provide adequate fresh
air for these appliances. This will insure proper venting of vented
fuel-burning appliances.
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901915-01B
INSTALLATION
Continued
Flue Opening Specifications (Cont.)
INSTALLATION
Check Gas Type
Venting Specifications for Installation
Installing Damper Clamp
Connecting To Gas Supply
5
5
MODEL
DESCRIPTION
Btu Input
Natural
Gas
Btu Input
Propane/LP
Gas
Minimum
Vent
Opening
HFVMR18 18" Multi-Side 55,000 45,000 8" dia.
HFVMR24 24" Multi-Side 65,000 55,000 8" dia.
MINIMUM FIREBOX SIZES
LOG FRONT BACK
SIZE WIDTH* WIDTH** DEPTH HEIGHT
18" 28" 28" 16" 18"
24" 29
* Add 6" if safety valve/pilot is used
**At depth indicated
3
/4" 29 3/4" 16" 18"
FUEL INLET PRESSURE
SPECIFICATIONS (W.C.)
Min. Max.
NG 5.5" 10.5"
LP 11" 13"
BURNER ORIFICE
LOG NATURAL PROPANE/LP
SIZE IN. NUM. IN. NUM.
18" .111 34 .073 49
24" .129 30 .086 44
Figure 2 - Technical Information Charts
CHECK GAS TYPE
Use only natural gas. If your gas supply is not natural gas, you must
install ON/OFF Safety Valve/Pilot Kit (see Accessories, page 17).
Call dealer where you bought log set.
If the fireplace does not have a gas supply shut-off valve, one must
be installed.
VENTING SPECIFICATIONS FOR
INSTALLATION
The fireplace chimney flue and vent must be drafting properly. To
check the vent for proper drafting: Light a tightly rolled newspaper
on one end and place it at the inside front edge of the fireplace.
Observe the smoke and be sure the vent is properly drawing it up the
chimney. If the smoke spills out into the room, extinguish the flame
and remove any obstruction until proper venting is achieved.
The chimney flue must remain open a minimum of 3" at all times
during the operation of this log set.
INSTALLING DAMPER CLAMP
Secure the damper stop clamp provided to the leading edge of the
damper as shown in Figure 3. If for any reason this clamp doesn't
work on your fireplace, another suitable clamp or permanent stop
must be installed, or the damper blade must be cut or removed.
Damper Clamp
Damper
Masonry Fireplace
Figure 3 - Attaching Damper Clamp
Manufactured Fireplace
Damper
Damper Clamp
Damper
CONNECTING TO GAS SUPPLY
WARNING: A qualified service person must connect log set to gas supply. Follow all local codes.
Installation Items Needed
Before installing log set, make sure you have the items listed below.
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve
• test gauge connection
• adjustable (crescent) wrench or pliers
• sediment trap
• tee joint
• pipe wrench
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in certain
areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to log set. If
pipe is too small, undue loss of volume will occur.
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901915-01B
INSTALLATION
6
Connecting To Gas Supply (Cont)
Checking Gas Connections
INSTALLATION
Continued
Installation must include an equipment shutoff valve, union, and
plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from log set (see Figure 4).
IMPORTANT:
Install equipment shutoff valve in an accessible
location. The equipment shutoff valve is for turning on or shutting
off the gas to the appliance.
Apply pipe joint sealant lightly to male threads. This will prevent
excess sealant from going into pipe. Excess sealant in pipe could
result in a clogged burner injector.
Approved
Gas Hose
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
From Gas Meter
3" Minimum
Cap
Figure 4 - Gas Connection
Pipe Nipple
Sediment Trap
(5" W.C.** to 10.5"
W.C. Pressure)
Tee Joint
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, page 17.
** Minimum inlet pressure for purpose of input adjustment.
WARNING: Use pipe joint sealant that is resistant
to liquid petroleum (LP) gas.
We recommend that you install a sediment trap in supply line as
shown in Figure 4. Locate sediment trap where it is within reach for
cleaning. Install in piping system between fuel supply and heater.
Locate sediment trap where trapped matter is not likely to freeze. A
sediment trap traps moisture and contaminants. This keeps them
from going into log set controls. If sediment trap is not installed or
is installed wrong, log set may not run properly.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections,
internal and external to unit, for leaks after installing
or servicing. Correct all leaks at once.
WARNING: Never use an open flame to check for
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect appliance with its appliance main gas valve (control
valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
3. Pressurize supply piping system by either using compressed air or
opening main gas valve located on or near gas meter.
4. Check all joints of gas supply piping system. Apply noncorrosive leak detection fluid to gas joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
6. Reconnect log set and equipment shutoff valve to gas supply.
Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 5).
2. Pressurize supply piping system by either using compressed air or
opening main gas valve located on or near gas meter.
3. Check all joints from gas meter to equipment shutoff valve (see
Figure 5). Apply noncorrosive leak detection fluid t o g as joi nts .
Bubbles forming show a leak.
4. Correct all leaks at once.
Equipment Shutoff Valve
Gas Meter
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Figure 5 - Checking Gas Joints
901915-01B
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