Desa FLAME-MAX FVFM27NR Quick start guide

UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
FLAME-MAX®
Multi-Sided Log Design
Patent Pending
For more information, visit www.desatech.com
WARNING: If the information in this manual is not


         


— WHAT TO DO IF YOU SMELL GAS
 
 

 

 

 -

      

FVFM27NR AND FVFM27PR
Remote Control Ready Models


www.desatech.com 110398-01D2
SAFETy
  
 
alteration, service or
maintenance can cause
   -

for correct installation
  -
   
additional information
   -
staller, service agency or

   -

-
ing masonry or UL127 fac-

-
-

in accordance with ANSI
  


that includes instructions
    
    
used with unvented gas

WARNING: This is an
  -
    
from the room in which


and ventilation air must
Air
for Combustion and Ven-
tilation

-
stalled in an aftermarket,*
 
 
-


     
indicated on the rating
   
   



TAbLE OF CONTENTS
Safety .................................................................. 2
Product Identication........................................... 5
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features................................................. 6
Remote Control Accessories ............................... 6
Air for Combustion and Ventilation ...................... 6
Installation ........................................................... 9
Operation........................................................... 17
Inspecting Burners ............................................ 21
Cleaning and Maintenance................................ 22
Wiring Diagram.................................................. 23
Specications .................................................... 23
Replacement Parts............................................ 23
Service Hints ..................................................... 23
Technical Services............................................. 23
Troubleshooting................................................. 24
Parts .................................................................. 28
Accessories ....................................................... 30
Warranty ..............................................Back Cover

www.desatech.com
110398-01D 3
   
contains and/or generates
chemicals known to the State
of California to cause cancer or
-



    -
    

    
   
   



   Early signs
of carbon monoxide poisoning resemble the
u, with headaches, dizziness, or nausea.
If you have these signs, the heater may not
be working properly. 
Have heater serviced. Some people are
more affected by carbon monoxide than oth-
ers. 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
and propane/LP gases are fuel gases. Fuel
gases are odorless. An odor-making agent
are added to fuel gases. The odor helps you
detect a fuel gas leak. However, the odor
added to fuel gas can fade. Fuel 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.
WARNING: Any change to
this heater or its controls can

WARNING: Do not use a
   
-

WARNING: Do not allow fans



    
   

    



   
    



    


   
will remain hot for a time after


-
dren when they are in the room

-



    

    

SAFETy
Continued

www.desatech.com 110398-01D4
SAFETy
Continued
    
-
-

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) outdoors (propane/LP units
only).
3. To prevent performance problems, the
use of a propane/LP tank of less than
100 lbs. capacity is not recommended
(propane/LP units only).
4. 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
5. This heater shall not be installed in a
bedroom or bathroom unless installed as
a vented appliance (see Installing Damper
Clamp Accessory for Vented Operation,
page 12).
6. Before installing in a solid fuel burning re-
place, 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. A dirty
chimney ue may create and distribute
soot within the house. Inspect chimney
ue for damage. If damaged, repair ue
and rebox before operating heater.
7. Do not burn solid-fuel in a masonry or
UL127 factory-built replace in which a
vent-free room heater is installed.
8. If replace has glass doors, never operate
this heater with glass doors closed. If you
operate heater with doors closed, heat
buildup inside replace will cause glass to
burst. Make sure there are no obstructions
across openings of replace.
9. This log heater is designed to be smoke-
less. If logs ever appear to smoke, turn off
heater and call a qualied service person.
Note: During initial operation, slight smok-
ing could occur due to log curing and
heater burning manufacturing residues.
10. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 22.
11. Before using furniture polish, wax, carpet
cleaner, or similar products, turn heater
off. If heated, the vapors from these prod-
ucts may create a white powder residue
within burner box or on adjacent walls or
furniture.
12. This heater needs fresh, outside air ven-
tilation to run properly. This heater has an
oxygen depletion sensing (ODS) pilot light
safety system. The ODS shuts down the
heater if not enough fresh air is available.
See Air for Combustion and Ventilation,
page 6. If heater keeps shutting off, see
Troubleshooting, page 24.
13. Do not run heater
• where ammable liquids or vapors are
used or stored
• under dusty conditions
14. Do not use this heater to cook food or burn
paper or other objects.
15. Do not use heater if any part has been ex-
posed 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.
16. Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
(dime-sized or larger).
17. Turn heater off and let cool before servic-
ing, 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.
18. Make sure the selector switch is in the
OFF position when you are away from
home for long periods of time.
19. This heater must not be connected to any
external electrical source.
20. Operating heater above elevations of
4,500 feet could cause pilot outage.
21. Provide adequate clearances around air
openings.

www.desatech.com
110398-01D 5
Figure 1 - Product Identication
Control Knob
Piezo
Ignitor
Log Set
Base Assembly
Optional
Remote
Control
Flame Adjustment Knob
Optional Selector Switch
PRODUCT IDENTIFICATION
LOCAL CODES
Install and use 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.
Batterymarch Park
Quincy, MA 02269
Note: Where listed vented decorative logs
are required, thermostat operation is not
permitted.
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.
UNPACkING
CAUTION: Do not remove
     
   
   -
formation warranty and safety

1. Remove logs and heater base assembly
from carton.
Note: Do not pick up heater base as-
sembly by the burner. This could damage
heater. Always handle base assembly by
grate.
2. Remove all protective packaging applied
to logs and heater for shipment.
3. Check heater for any shipping damage. If
heater is damaged call DESA Heating, LLC
at 1-866-672-6040 for replacement parts
before returning to dealer.

www.desatech.com 110398-01D6
WARNING: This heater shall

-


National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International
Fuel Gas Code,-
-



Today’s homes are built more energy efcient
than ever. New materials, increased insula-
tion, 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
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 realistic,
dancing yellow ames. 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 product (ANSI
Z21.60) by opening ue damper (non-thermo-
stat operation only).
APPLICATION
These multisided logs are designed to be
equally beautiful when viewed from any angle.
They are designed specically for use in see-
through, peninsula, and island reboxes with
multiple openings. You may also install this
log heater in a standard rebox.
SAFETY PILOT
This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff 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
requires no matches, batteries, or other
sources to light heater.
REMOTE CONTROL ACCESSORIES
There are four optional remote controls that
can be purchased separately for this log
heater:
• wall switch
• wall thermostat
• hand-held ON/OFF remote
• hand-held thermostat remote
See Accessories, page 30.
Note: The wall thermostat or hand-held
thermostat may not be used where vented
decorative listing is required.
AIR FOR COMbUSTION AND VENTILATION
air must enter your home. All fuel-burning ap-
pliances 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.


The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, SAir for
Combustion and Ventilation.
All spaces in homes fall into one of the three
following 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.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion

www.desatech.com
110398-01D 7
and ventilation. However, in buildings of un-
usually tight construction, you must provide
additional fresh air.

as construction where:
 -
    

-112
and
 
and
      
     


    


If your home meets all of the three criteria
above, you must provide additional fresh air.
See Ventilation Air From Outdoors, page 8.
If your home does not meet all of the three
criteria above, proceed to Determining Fresh-
Air Flow For Heater Location.

The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 denes a conned space as a space
whose volume is less than 50 cubic feet per
1,000 Btu/hr (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/hr (4.8 m3 per kw) of the ag-
gregate 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 un-
conned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation
grills between them.
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION


Use this work sheet to determine if you have
a conned or unconned space.
 Includes the room in which you will
install heater plus any adjoining rooms with
doorless passageways or ventilation grills
between the rooms.
1. Determine the volume of the space (length
x width x height).
Length x Width x Height =__________ c u .
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 supplied 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 sup-
port.
________ (volume of space) x 20 = (Maxi-
mum 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 heater _________Btu/Hr
Gas water heater* _________Btu/Hr
Gas furnace _________Btu/Hr
Vented gas heater _________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 heater* __________ Btu/Hr
Vent-free heater + _________ 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
40,000
33,000
73,000

www.desatech.com 110398-01D8
Outlet
Air
V e ntilated
Attic
Outlet
Air
Inlet
Air
Inlet Air V e ntilated
Crawl Space
T o
Crawl
Space
T o Attic
AIR FOR COMbUSTION AND VENTILATION
Continued
The space in this 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 adjoin-
ing room or add ventilation grills between
rooms. See Ventilation Air From Inside
Building.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors.
C. Install a lower Btu/Hr heater, if lower Btu/Hr
size makes room unconned.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
an unconned space. You will need no additional
fresh air ventilation.
WARNING:Iftheareainwhich


-


   National Fuel
Gas Code,ANSI Z223.1/NFPA54,
the International Fuel Gas Code,



This fresh air would come from an adjoining
unconned space. When ventilating to an
adjoining unconned space, you must provide
two permanent 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). You can also remove door
into adjoining room (see option 3, Figure 2).
Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.
Figure 2 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ve ntilation Grills
Into Adjoining Room,
Option 2
Ve ntilation
Grills Into
Adjoining
Room,
Option 1
12"
12"

Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent 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, 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 thermo-
stat-controlled power vent. Heated air entering
the attic will activate the power vent.
Figure 3 - Ventilation Air from Outdoors

www.desatech.com
110398-01D 9
INSTALLATION
WARNING: Never install the
heater
     
unless installed as a vented

 
 -

arelessthan 42"fromthefront,

 
 
CAUTION: This heater cre-
    
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 Ventila-
tion, page 6.
CHECK GAS TYPE
Use only the correct type of gas (natural or
propane/LP). If your gas supply is not the
correct gas type, do not install heater. Call
dealer where you bought heater for proper
type heater.



-


NOTICE: This heater is intended
    
Use this heater along with your

     -

central heating system, you may


circulate the heat throughout the

outage, you can use this heater

 -


NOTICE:Stateorlocalcodes may
-
    



    
-

-


    


    

WARNING: Seal any fresh
air vents or ash clean-out doors
-

     
   


www.desatech.com 110398-01D10

Log
Size

Height  Width
27" 17" 19" 32"
Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured replace, or listed
vent-free rebox.
Minimum Clearances For Side

Ceiling
A. Clearances from side of replace cabinet
to any combustible material and wall
should follow diagram in Figure 4.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1/2" from the wall. This com-
bustible material must be 4" from the side
of the replace cabinet (see Figure 4).
Note: When installing your gas logs into
a manufactured rebox, follow rebox
manufacturer’s instructions for minimum
clearances to combustible materials.
B. Clearances from top of replace opening
to ceiling should not be less than 42".
INSTALLATION
Continued
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
NOTICE: Manual control heaters

If so, you must always run heater

    


 Installing Damper
Clamp Accessory for Vented
Operation

MATERIAL CLEARANCES
If Not Using Mantel
Note: If using a mantel, proceed to If Using
Mantel, page 10 If not using a mantel, follow
the information below.

Material Distance


Installation
12" or more Noncombustible mate-
rial OK.
Between 8" and
12"
Install fireplace hood
accessory (GA6050,
GA6052, or GA6053 see
Accessories, page 30).
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.
INSTALLATION AND CLEARANCES

WARNING: Maintain the
   

    -

MINIMUM FIREPLACE CLEARANCE TO

Side Wall 16", Ceiling 42", Front 36"