Desa VDCFTNB Quick start guide

UNVENTED (VENT-FREE) GAS
COMPACT CLASSIC HEARTH®
DUAL BURNER FIREPLACE
OWNER’S OPERATION AND
INSTALLATION MANUAL
For more information, visit www.desatech.com
THERMOSTAT MODELS VDCFTNB AND VDCFTPB
REMOTE-READY MODELS CDCFPRA, CDCFNRA, VDCFRPB AND
VDCFRNB
Shown with Optional Cabinet Mantel/Hearth Base Accessory
WARNING: If the information in this manual is not


         
vapors and liquids in the vicinity of this or any other

— WHAT TO DO IF YOU SMELL GAS
 
 

 

 

— Installation and service must be performed by a quali-




www.desatech.com 123502-01C2
WARNING: Improper
 
alteration, service or
maintenance can cause
   -

for correct installation
and operational proce-
   
additional information
consult a qualified in-


WARNING: This is an
  -
    
from the room in which

for adequate combustion
and ventilation air must
Air
for Combustion and Ven-
tilation

SAFETY
This appliance may be in-
stalled in an aftermarket,*
permanently located,
 
home, where not prohib-

This appliance is only for
     
   
   
not convertible for use

* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer
WARNING: This product
  
chemicals known to the State
of California to cause cancer or
birth defects or other reproduc-


manual carefully and completely
    -
    
    
    
    -
sion,electricalshockandcarbon

TABLE OF CONTENTS
Safety .................................................................. 2
Product Identication........................................... 4
Optional Remote Control Accessories................. 4
Local Codes......................................................... 5
Product Features................................................. 5
Unpacking............................................................ 5
Hood Assembly .................................................. 6
Air for Combustion and Ventilation ...................... 6
Installation ........................................................... 9
Operation........................................................... 19
Inspecting Burners............................................. 25
Cleaning and Maintenance................................ 25
Wiring Diagram.................................................. 26
Troubleshooting................................................. 27
Specications .................................................... 31
Replacement Parts............................................ 31
Service Hints ..................................................... 31
Technical Service............................................... 31
Parts .................................................................. 32
Accessories ....................................................... 38

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123502-01C 3
DANGER: Carbon monoxide

   Early signs
of carbon monoxide poisoning resemble the
u, with headaches, dizziness or nausea. If
you have these signs, the replace may not
be working properly. 
Have replace 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 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 replace.
    


WARNING: Do not use a
   
insert or other accessory not
-

WARNING: Do not allow fans

Avoid any drafts thatalter burner

create drafts that alter burner
   

    
appliance should be located out


  
    


Fireplace front and screen be-
    

away from hot surfaces to avoid
-
place will remain hot for a time


   -
dren when they are in the room
    
hand-held remote accessory
  
keep selector switch in the OFF
position to prevent children from



    

    
and free from combustible ma-
-

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.
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 replace shall not be installed in a
bedroom or bathroom.
SAFETY
Continued

www.desatech.com 123502-01C4
PRODUCT IDENTIFICATION
Ignitor Button
Screen
Fireplace
Cabinet
Log
Control
Knob
Figure 1 - Vent-Free Compact Dual Flame Fireplace
Hood
Fireplace Cabinet
Logs
Ignitor
Button
Remote Control
(Optional)
Control Knob
Hood
OPTIONAL REMOTE CONTROL ACCESSORIES
SAFETY Continued
5. Do not use this replace as a wood-burn-
ing replace. Use only the logs provided
with the replace.
6. Do not add extra logs or ornaments such as
pine cones, vermiculite or rock wool. Using
these added items can cause sooting. Do not
add lava rock around base. Rock and debris
could fall into the control area of replace.
7. This replace is designed to be smokeless.
If logs ever appear to smoke, turn off re-
place and call a qualied service person.
Note: During initial operation, slight smok-
ing could occur due to log curing and re-
place burning manufacturing residues.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 25.
9. Before using furniture polish, wax, carpet
cleaner or similar products, turn replace
off. If heated, the vapors from these products
may create a white powder residue within
burner box or on adjacent walls or furniture.
10. This replace needs fresh air ventilation to
run properly. This replace has an Oxygen
Depletion Sensing (ODS) safety shutoff
system. The ODS shuts down the re-
place if not enough fresh air is available.
See Air for Combustion and Ventilation,
page 6. If replace keeps shutting off, see
Troubleshooting, page 27.
11. Do not run replace
• where ammable liquids or vapors are
used or stored.
• under dusty conditions.
12. Do not use this replace to cook food or
burn paper or other objects.
13. Never place any objects in the replace
or on logs.
14. Do not use replace if any part has been
under water. Immediately call a qualied
service technician to inspect the room
replace and to replace any part of the
control system and any gas control which
has been under water.
15. Turn off and unplug replace and let cool
before servicing. Only a qualied service
person should service and repair replace.
16. Operating replace above elevations of
4,500 feet could cause pilot outage.
17. Do not operate replace if log is broken.
Do not operate replace if log is chipped
(dime-sized or larger).
18. To prevent performance problems, do
not use propane/LP fuel tank of less than
100 lb. capacity.
19. Provide adequate clearances around air
openings.

There are four optional remote controls that
can be purchased separately for Remote-
Ready Models only:
• wall switch
• hand-held ON/OFF remote
• wall thermostat
• hand-held thermostat remote
See Accessories, page 38.

www.desatech.com
123502-01C 5
LOCAL CODES
Install and use replace 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
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.
PRODUCT FEATURES

This replace has a pilot with an Oxygen
Depletion Sensing (ODS) safety shutoff
system. The ODS/pilot is a required feature
for vent-free room replaces. The ODS/pilot
shuts off the replace if there is not enough
fresh air.

This replace has a piezo ignitor. This sys-
tem requires no matches, batteries or other
sources to light replace.
THERMOSTATIC HEAT CONTROL
FOR THERMOSTAT-CONTROLLED
MODELS
Thermostat-Controlled models have a ther-
mostat sensing bulb and a control valve.
The thermostat will automatically modulate
the heat output to maintain a consistent
room temperature. This results in greater
replace comfort. This can also result in
lower gas bills.
UNPACKING
1. Remove replace and hood from carton.
Log is wrapped and inside replace. Do
not remove at this time.
2. Remove all protective packaging applied
to replace for shipment.
3. Make sure your replace includes one
hardware packet.
4. Check replace for any shipping damage.
If replace is damaged, call DESA Heat-
ing, LLC at 1-866-672-6040 for replace-
ment parts before returning to dealer.


WARNING: Ceramic brick
liners are located behind upper
louver and must be removed

1. Remove screws from top louver and care-
fully remove louver (see Figure 2).
2. Remove ceramic brick liners with protec-
tive packaging. The brick liners will be
installed later.
3. Remove yellow sticker from top of re-
box.
4. Replace top louver using screws removed
in step 1.
Figure 2 - Removing Brick Liners
Top Louver
Screws
Wrapped
Brick Liners

www.desatech.com 123502-01C6
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 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, Air for
Combustion and Ventilation.
Figure 4 - Assembling Hood
Hood
Sheet Metal
Screws
Firebox Top
Louver
AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall
notbeinstalledinaroomorspace
unless the required volume of
indoorcombustion airis provided
by the method described in the
National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International
Fuel Gas Code, or applicable

instructionstoinsureproperfresh


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
WARNING: Always have

-
 

WARNING: Failure to position
thepartsinaccordancewiththese
     

-

Tools Required:
• Phillips screwdriver • slotted screwdriver
• 5/16" hex wrench • scissors
1. If equipped, lift replace screen up and
pull out to remove (see Figure 3). Set
screen aside until installation has been
completed.
2. Cut two plastic straps to remove log from
rebox cavity. Set log aside.
3. An optional blower is available. See Ac-
cessories, page 38. Install optional blower
now. Follow installation instructions pro-
vided with blower.
4. Locate four black Phillips sheet metal
screws in hardware packet.
5. Slide hood between louver and rebox top
and align screw holes.
Figure 3 - Removing and Installing Screen
Screen
Shoulder Screw
HOOD ASSEMBLY
6. Insert screws as shown in Figure 4.
Tighten screws rmly.

www.desatech.com
123502-01C 7
AIR FOR COMBUSTION AND VENTILATION
Continued
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.

The air that leaks around doors and windows
may provide enough fresh air for combustion
and ventilation. However, in buildings of un-
usually tight construction, you must provide
additional fresh air.

construction where:
 -
side atmosphere have a continuous

2
and
 
openable windows and doors and
      
     
and door frames, between sole plates

between wall panels, at penetrations


If your home meets all of these three criteria,

Ventilation Air From Outdoors
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Fireplace 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 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 doorless 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.
Space: Includes the room in which you will install
replace plus any adjoining rooms with door-
less passageways or ventilation grills between
the rooms.
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 16 ft. (length) x 14 ft.
(width) x 8 ft. (ceiling height) = 1792 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 support.
________ (volume of space) x 20 = (Maxi-
mum Btu/Hr the space can support)
Example: 1792 cu. ft. (volume of space) x
20 = 35,840 (maximum Btu/Hr the space
can support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free replace __________ 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 replace ________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 space can support)
______ Btu/Hr (actual amount used)
Example: 35,840 Btu/Hr (maximum the
space can support)
40,000 Btu/Hr (actual amount of
Btu/Hr used)
30,000
+ 10,000
= 40,000

www.desatech.com 123502-01C8
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 sup-
port. 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 replace, 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:If theareainwhich
the heater may be operated does
not meet the required volume for
indoor combustion air, combus-
tion and ventilation air shall be
provided by one of the methods
described in the National Fuel
Gas Code,ANSI Z223.1/NFPA54,
the International Fuel Gas Code,

VENTILATION AIR

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 5). You can also remove door
into adjoining room (see option 3, Figure 5).
Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.
Ventilation Air From Outdoors
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 6 - Ventilation Air from Outdoors
Outlet
Air
V e ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air V e ntilated
Crawl Space
T o
Crawl
Space
T o Attic
Figure 5 - 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"

www.desatech.com
123502-01C 9
INSTALLATION
IMPORTANT: Vent-free replaces add mois-
ture to the air. Although this is benecial,
installing replace in rooms without enough
ventilation air may cause mildew to form from
too much moisture. See Air for Combustion
and Ventilation, page 6.
Note: Your replace is designed to be used in
zero clearance installations. Wall or framing ma-
terial can be placed directly against any exterior
surface on the rear, sides or top of your replace,
except where standoff spacers are integrally at-
tached. If standoff spacers are attached to your
replace, these spacers can be placed directly
against wall or framing materials.
Note: When installing replace directly on
carpeting, tile or other combustible material,
other than wood ooring, the replace shall be
installed on a metal or wood panel extending
the full width and depth of the replace.
Use the dimensions shown for rough openings
to create the easiest installation (see Built-In
Fireplace Installation, page 10).

Use the correct gas type (natural or propane/LP)
for your unit. If your gas supply is not correct,
do not install replace. Call dealer where you
bought replace for proper type replace.
WARNING: This appliance is


Gas type is indicated on the rat-


INSTALLATION ITEMS
Before installing replace, make sure you
have the items listed below.
• external regulator (supplied by installer, for
propane/LP units only)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection*
• ground joint union
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certied equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional
CSA design-certied equipment shutoff valve
from your dealer. See Accessories, page 38.
NOTICE: This heater is intended











 -
    -

WARNING: Never install the

 
 
 -



 
 
 
WARNING: Never install in a
-



 -
-
rents move heat to wall surfaces


-

tobacco smoke, aromatic candles,
    
      


www.desatech.com 123502-01C10
Note: If desired, purchase a four-sided pe-
rimeter trim kit for built-in installations. See
Accessories, page 38.

WARNING: Maintain the
minimum clearances shown

   

If your replace is to be used with an optional
mantel, the installation instructions included
with your mantel shows an CSA approved
method of attaching the replace/mantel sys-
tem to a wall. IMPORTANT: Only use optional
cabinet or corner mantels specied in this
manual. Purchase the optional mantel from
your dealer (see Accessories, page 38).
If your replace is to be recessed into the wall,
see Built-In Fireplace Installation on page 10
to secure your replace into the wall.
CAUTION: If you install the

 

 

For convenience and efciency, install re-
place
• where there is easy access for operation,
inspection and service
• in coldest part of room
An optional blower kit is available from your
dealer. See Accessories, page 38. If planning
to use blower, follow instructions provided with
blower for power source.
Minimum Clearances For Side
Combustible Material, Side Wall and

A. Clearances from the side of the replace
cabinet to any combustible material and
wall should follow diagram in Figure 6.
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 opening (see Figure 7).
INSTALLATION
Continued
Figure 7 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
B. Clearances from the top of the replace
opening to the ceiling should not be less
than 36".
C. For mantel clearances, see Figure 11 on
page 12.
MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
Top 36", Left and Right Sides 6",
Bottom and Rear 0", Front 36"

Built-in installation of this replace involves
installing replace into a framed-in enclosure.
This makes the front of replace ush with wall.
An optional trim kit accessory is available (see
Accessories, page 38). Trim will extend past
sides of replace approximately 1/2". This will
cover the rough edges of the wall opening. If
installing a built-in mantel above the replace,
you must follow the clearances shown in Figure
11, page 12. Follow the instructions below to
install the replace in this manner.
Actual Framing
Height 26" 26 7/8"
Front Width 26 3/4"26 7/8"
Depth 14 1/4"15 1/4"
1. Frame in rough opening. Use dimensions
shown in Figure 8, page 11, for the rough
opening. If installing in a corner, use
dimensions shown in Figure 9, page 11,
for the rough opening. The height is 26 7/8"
which is the same as the wall opening
above.