Desa Firewerks VFRMV18NB Quick start guide

For more information, visit www.desatech.com
WARNING: If the information in this manual is not fol-


         


— WHAT TO DO IF YOU SMELL GAS
 
• Do not touch any electrical switch; do not use any

 

 

 -

UNVENTED (VENT FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
MODELS VFRMV18NB, VFRMV18PB,
VFRMV24NB AND VFRMV24PB



APPROVED



www.desatech.com 116412-01B2
    -
-

      -


       
      

     
-
-
          


-

Air for Combustion and Ventilation

-


-
-


TABLE OF CONTENTS
Safety Information ............................................... 3
Product Identication........................................... 5
Local Codes......................................................... 5
Unpacking............................................................ 5
Optional Remote Control Accessories................. 5
Product Features................................................. 5
Air For Combustion and Ventilation..................... 6
Installation ........................................................... 8
Operating Heater............................................... 16
Inspecting Burners............................................. 19
Cleaning and Maintenance................................ 20
Wiring Diagram.................................................. 21
Troubleshooting................................................. 22
Specications .................................................... 26
Replacement Parts............................................ 26
Service Hints ..................................................... 26
Technical Service............................................... 26
Accessories ....................................................... 26
Illustrated Parts Breakdown and Parts List........ 28
Warranty Information ...........................Back Cover

www.desatech.com
116412-01B 3
SAFETy INFORMATION
   
  
    

-



    -
     

    
   
   



   Early signs of
carbon monoxide poisoning resemble the u, 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 mon-
oxide than others. These include pregnant women,
people with heart or lung disease or anemia, those
under the inuence of alcohol and those at high
altitudes.
 Natural & Propane/LP
gas are 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: Do not use a
   
insert or other accessory not
 -


    -


WARNING: Do not allow fans



    
   



    




    




children and adults away from
     
   
remain hot for a time after shut-
    

   -
dren when they are in the room

hand-held remote accessory,



    

    


www.desatech.com 116412-01B4
    
-
-




    
-


1. This appliance, as supplied, 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) in-
side the structure. Locate propane/LP supply
tank(s) outdoors (propane/LP units only).
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 re department
4. This heater shall not be installed in a bedroom
or bathroom, unless installed as a vented appli-
ance. See Installing Damper Clamp Accessory
for Vented Operation, page 12.
5. Before installing in a solid fuel burning replace,
the chimney ue and rebox must be cleaned of
soot, creosote, ashes and loose paint by a qualied
chimney cleaner. Creosote will ignite if highly
heated. Inspect chimney ue for damage. If dam-
aged, repair ue before operating appliance.
6. If replace has glass doors, never operate with
glass doors closed, If you operate heater with
doors closed, heat buildup inside replace will
cause glass to burst. Also if replace opening
has vents at the bottom, you must open the
vents before operating heater.
7. To prevent the creation of soot, follow the instruc-
tions in Cleaning and Maintenance, page 20.
SAFETy INFORMATION
Continued
8. 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 the burner
box or on adjacent walls and furniture.
9. This heater needs fresh, outside air ventilation
to run properly this heater has an Oxygen De-
pletion Sensing (ODS) safety shutoff system.
The ODS shuts down the heater if enough fresh
air is not available. See Air Combustion and
Ventilation page 6. If the heater keeps shutting
off, see Troubleshooting, page 22.
10. Do not run heater
• where ammable liquids or vapors are used
or stored
• under dusty conditions
11. Do not use heater to cook food or burn paper
or other objects.
12. Do not use heater if any part has been exposed
to or under water. Immediately call a qualied
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.
13. Do not operate heater if any log is broken. Do
not operate heater if a log is chipped (dime-
size or larger).
14. Turn heater off and let cool before servicing,
installing or repairing. Make sure the selector
switch is in the OFF position. Only a quali-
ed service person should install, service or
repair heater.
15. Make sure the selector switch is in the OFF
position when you are away from home for
long periods of time.
16. Remote-ready heaters shall not be connected
to any external electrical source.
17. Operating heater above elevations of 4,500
feet may cause pilot outage.
18. To prevent performance problems, do not use
propane/LP tank(s) of less than 100 lb. capac-
ity (propane/LP units only).
19. Provide adequate clearances around air
openings.
 -
    
    
    

    


www.desatech.com
116412-01B 5
PRODUCT
IDENTIFICATION
Figure 1 - Product Identication
Log Set
Chassis Assembly
LOCAL CODES
Install and use the heater 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.
Battery march park
Quincy, MA 02269
Note: Where listed vented decorative logs are
required, thermostat operations is not permitted.
The installation of appliances designed for manu-
factured home (U.S. only) or mobile home instal-
lation must conform with the Standard CAN/CSA
Z240 MH, Standard, Title 24 CFR, Part 3280, in
the United States or when such a Standard is not
applicable, ANSI/NCSBCS A225.1/NFPA 501A
Manufactured Home Installations Standard.
UNPACkING

     -

   

1. Remove log set assembly from carton.
Note: Do not pick up assembly by logs.
This could damage the unit. Always handle
assembly by grate.
2. Remove all protective packaging applied to
log set for shipment.
3. Check all items for any shipping damage. If
damaged, promptly inform dealer where you
bought appliance.
OPTIONAL REMOTE
CONTROL ACCESSORIES
There are four optional remote controls that can
be purchased separately:
Wall switch Hand-held ON/OFF remote
Wall thermostat Hand-held thermostat remote
See Accessories, page 26.
The wall thermostat or hand-held thermostat may not
be used where vented decorative listings is required.
PRODUCT FEATURES
OPERATION
This heater is clean burning. It requires no outside
venting. There is no heat loss out a vent or up a
chimney. Heat is generated by both realistic ames
and glowing coals. This heater is designed for
vent-free operation with ue damper closed. It
has been tested and approved to ANSI Z21.11.2
standard for unvented heaters. State and local
codes in some areas prohibit the use of vent-free
heaters. This heater may also be operated as a
vented decorative (ANSI Z21.60) product by
opening the ue damper.

This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shut off system. The
ODS/pilot is a required feature for vent-free room
heaters. The ODS/pilot shuts off the heater if there
is not enough fresh air.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system re-
quires no matches, batteries or other sources to
light heater.
State of Massachusetts: The installation
must be made by a licensed plumber or
gas tter in the Commonwealth of Mas-
sachusetts.
Sellers of unvented propane or natural
gas-red supplemental room heaters shall
provide to each purchaser a copy of 527
CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for
bedroom and bathroom installation in the
Commonwealth of Massachusetts.

www.desatech.com 116412-01B6
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This heater shall
    
    -

-


     
  

Today’s homes are built more energy efcient
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 ef-
cient, 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, replaces, 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.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Section 5.3,
Air for Combustion and Ventilation.
All spaces in homes fall into one of the three fol-
lowing ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 6 through 8 will help
you classify your space and provide adequate
ventilation.

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.

as construction where:
 -
    
      
-112

and
 
and
      
     


    


If your home meets all of the three
     -
    Ventilation Air
From Outdoors
If your home does not meet all of the three
    Determining
Fresh-Air Flow For Appliance Location

The National Fuel Gas Code, ANSI Z223.1/NFPA
54 denes a conned space as a space whose vol-
ume 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 unconned
space as a space whose volume is not less than 50
cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of
the aggregate input rating of all appliances installed
in that space. Rooms communicating directly with
the space in which the appliances are installed*,
through openings not furnished with doors, are
considered a part of the unconned space.
* Adjoining rooms are communicating only if
there are odorless passageways or ventilation grills
between them.
DETERMINING FRESH-AIR FLOW



Use this work sheet to determine if you have a
conned or unconned space.
 Includes the room in which you will install
appliance plus any adjoining rooms with door-
less passageways or ventilation grills between
the rooms.

www.desatech.com
116412-01B 7
1. Determine the volume of the space (length x
width x height).
Length x Width x Height =_________cu. ft.
(volume of space)
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 cu. ft.
(volume of space)
If additional ventilation to adjoining room is sup-
plied with grills or openings, add the volume of
these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine
the maximum Btu/Hr the space can support.
____________(volume of space) x 20 =
(Maximum Btu/Hr the space can support)
Example: 2560 cu. ft. (volume of space) x
20 = 51,200 (maximum Btu/Hr the space can
support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free appliance _________Btu/Hr
Gas water appliance* _________ Btu/Hr
Gas furnace _________Btu/Hr
Vented gas appliance _________Btu/Hr
Gas replace logs _________Btu/Hr
Other gas appliances* +_________Btu/Hr
Total =_________Btu/Hr
* Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
Gas water appliance _________Btu/Hr
Vent-free appliance +_________Btu/Hr
Total =_________Btu/Hr
4. Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
___________ Btu/Hr (maximum the space
can support)
____________Btu/Hr (actual amount of
Btu/Hr used)
Example: 51,200 Btu/Hr (maximum the
space can support)
73,000 Btu/Hr (actual amount of
Btu/Hr used)
AIR FOR COMBUSTION
AND VENTILATION
Continued
The space in the previous example is a conned
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
unconned space, remove door to adjoining
room or add ventilation grills between rooms.
See Ventilation Air From Inside Building.
B. Vent room directly to the outdoors. See Ven-
tilation Air From Outdoors, page 8.
C. Install a lower Btu/Hr appliance, if lower
Btu/Hr size makes room unconned.
If the actual Btu/Hr used is less than the
maximum Btu/Hr the space can support, the
space is an unconned space. You will need
no additional fresh air ventilation.
WARNING:Iftheareainwhich


     
    



in the National Fuel Gas Code,
ANSI Z223.1/NFPA54 Section 5.3

VENTILATION AIR

This fresh air would come from an adjoining un-
conned space. When ventilating to an adjoining
unconned space, you must provide two perma-
nent openings: one within 12" of the ceiling and
one within 12" of the oor on the wall connecting
the two spaces (see options 1 and 2, Figure 2 on
page 8). You can also remove door into adjoining
room (see option 3, Figure 2). Follow the National
Fuel Gas Code, ANSI Z223.1/NFPA 54, Section
5.3, Air for Combustion and Ventilation for re-
quired size of ventilation grills or ducts.
40,000
33,000
73,000

www.desatech.com 116412-01B8
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 oor. 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, ANSI Z223.1/NFPA 54,
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.
AIR FOR COMBUSTION
AND VENTILATION
Continued
Figure 3 - Ventilation Air from Outdoors
Figure 2 - Ventilation Air from Inside
Building
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
INSTALLATION

    



     




-


-



-
    

    
-



    
  -

-




  


www.desatech.com
116412-01B 9
WARNING: Seal any fresh
air vents or ash clean-out doors
-

     
   

WARNING: Never install
the heater
•     
unless installed as a vented

• in a recreational vehicle
• where curtains, furniture,
   
    

heater
 
• in windy or drafty areas
 -
    
currents move heat to wall sur-
    
heater next to vinyl or cloth wall
   


-

the air exist, may discolor walls

IMPORTANT: Vent-free heaters add moisture to
the air. Although this is benecial, installing heater
in rooms without enough ventilation air may cause
mildew to form from too much moisture. See Air
for Combustion and Ventilation, page 6.

Use the correct gas type (natural or propane/LP) for
your unit. If your gas supply is not correct, do not
install in replace. Call dealer where you bought
the appliance for proper type of appliance.
INSTALLATION
Continued    
-



FOR VENT-FREE OPERATION
WARNING: Maintain the
   



*Measured at 14" depth
Allow adequate clearances for accessibility for
purposes of servicing and proper operation
Carefully follow the instructions below. This will
ensure safe installation into masonry, UL127-
listed manufactured replace or listed vent-free
rebox.



A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 4, page 10.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material must be
4" from the side of the replace to the cabinet
(see Figure 4, page 10).
B. Clearances from the top of the replace open-
ing to the ceiling should not be less than 42".


SIDE WALL 16"
CEILING 42"
FLOOR 5"
LOG SIZING REQUIREMENTS
MINIMUM FIREBOX SIZE
LOG
SIZE HEIGHT DEPTH
FRONT
WIDTH
REAR
WIDTH
18" 18" 14" 30" 20.5"
24" 18" 14" 35" 24.5"

www.desatech.com 116412-01B10
   -


always run heater with chimney
    

-

     
Installing Damper Clamp Ac-
cessory for Vented Operation,
.



Note: If using a mantel proceed to If Using Man-
tel. If not using mantel, follow the information
on this page.
You must have noncombustible material(s) above
the replace opening. Noncombustible materi-
als (such as slate, marble, tile, etc..) Must be at
least 1/2" thick. With sheet metal, you must have
noncombustible material behind it. Noncombus-
tible material must extend at least 8" up (for all
models). If noncombustible material is less than
12", you must install the replace hood accessory
(24" Models Only). See Figure 5 for minimum
clearances.
INSTALLATION
Continued
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace

You must have noncombustible material(s) above the
replace opening. Noncombustible materials (such
as slate, marble, tile, etc.) must be at least 1/2" thick.
With sheet metal, you must have noncombustible
material behind it. Noncombustible material must
extend at least 8" up (for all models). If noncombus-
tible material is less than 12", you must install the
replace hood accessory (24" Models Only). Even if
noncombustible material is more than 12", you may
need the hood accessory to deect heat away from
your mantel shelf. See Figure 5 and Figures 6 and
7, page 11, for minimum clearances.
IMPORTANT: If you cannot meet these minimum
clearances, you must operate heater with chimney
ue damper open. Go to Installing Damper Clamp
Accessory for Vented Operation, page 12.
  
 
12" or more Noncombustible
material OK.
Between 8" and 12" 24" Models:
Install replace hood
accessory (GA6050,
GA6052, GA6053, see
Accessories, page 26).
18" Model: Noncom-
bustible material OK.
Less than 8" Noncombustible
material must be
extended to at least
8". See Between 8"
and 12", above. If you
cannot extend material,
you must operate
heater with ue damper
open and damper
clamp installed.