Desa FVMR18 Quick start guide

For more information, visit www.desatech.com
NATURAL GAS LOGS
VENTED DECORATIVE APPLIANCE
OWNER’S OPERATION AND INSTALLATION MANUAL
Vanguard Burner Models VVMR18 and VVMR24
For Use with Vanguard Log Set Models VMLR18 and VMLR24
FMI Burner Models FVMR18 and FVMR24
For Use with FMI Log Set Models FMLR18 and FMLR24
O-TL REPORT # 114-L-31-4
ANSI Z21.84
WARNING: If the information in this manual is not


         


— WHAT TO DO IF YOU SMELL GAS
 
 

 

 

 -


CONSUMER: Retain this manual for future reference.
-
        

fire-parts.com

www.desatech.com 901267-01E2
SAFETY
-

known to the State of California






    -
     

    
   
   



   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.  Have
log set serviced. Some people are more af-
fected by carbon monoxide than others. These
include pregnant women, people with heart or
lung disease or anemia, those under the inu-
ence 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.
-
  
service or maintenance can

Refer to this manual for correct
  
   
additional information consult
   

   
is for installation only in a
   
  

material and connected to a
     


    
from the room in which it is in-



National Fuel Gas Codes, ANSI
Z233.1/NFPA 54,Air for Combus-
tion and Ventilation.




local codes.


TABLE OF CONTENTS
Safety .................................................................. 2
Local Codes......................................................... 4
Unpacking............................................................ 4
Product Identication ........................................... 4
Optional Product Features................................... 4
Installation ........................................................... 5
Operation ........................................................... 12
Cleaning and Maintenance ................................ 13
Technical Service............................................... 13
Troubleshooting ................................................. 14
Replacement Parts ............................................ 17
Parts .................................................................. 18
Accessories ....................................................... 22
Warranty ..............................................Back Cover
fire-parts.com

www.desatech.com
901267-01E 3
    


1. This appliance, as supplied, is only for
use with the type of gas indicated on the
rating plate. This appliance is convert-
ible for use with propane/LP, using the
GA9050A-1 or GA9150A 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 re department
3. Never install the log set
• in a recreational vehicle
• where curtains, furniture, clothing or other
ammable objects are less than 42" from
the front, top or sides of the log set
• in high trafc areas
• in windy or drafty areas
4. 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 and rebox
for damage. If damaged, repair ue before
operating heater.
5. You must operate this log set with a re-
place screen in place. Make sure replace
screen is closed before running log set.
6. This log set is designed to be smokeless.
If logs ever appear to smoke, turn off appli-
ance and call a qualied service person.
Note: During initial operation, slight smok-
ing could occur due to log curing and
the burning of manufacturing residues.
You may wish to add more ventilation by
opening a window.
SAFETY
Continued
7. To reduce the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 13.
8. Do not allow fans to blow directly into the
replace. Avoid any drafts that alter burner
ame patterns. Ceiling fans can create
drafts that alter burner ame patterns.
Altered burner patterns can increase
sooting.
9. Do not use a blower insert, heat exchang-
er insert or other accessory not approved
for use with this log set.
10. This installation and provisions for com-
bustion and ventilation air must conform
to the National Fuel Gas Code, ANSI
Z233.1/NFPA 54, Air for Combustion and
Ventilation.
11. Do not run log set
• where ammable liquids or vapors are
used or stored
• under dusty conditions
12. Do not burn solid fuel in the replace 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 qualied service technician to in-
spect the room appliance and to replace
any part of the control system (if using
GA9050A-1 or GA9150A) and any gas
control which has been under water.
16. To help prevent breakage, new logs must
be broken-in (see Curing Logs, page 12).
17. Turn log set off and let cool before servic-
ing, installing or repairing. Only a qualied
service person should install, service or
repair log set.
fire-parts.com

www.desatech.com 901267-01E4
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
Figure 1 - Product Identication
UNPACKING
CAUTION: Do not remove

    
   
information.
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 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.
Grate
Burner
Pan
Burner Manifold Right Side
Burner
Left Side
Burner Burner Inlet
Fitting
PRODUCT IDENTIFICATION
Hearth Kit Model:____________________
Serial Number:______________________
Log Set Model: _____________________
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 sys-
tem requires no matches, batteries or other
sources to light. You must use this optional
system for LP conversion. See Accessories,
page 22.
REMOTE CONTROL READY

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 Accessories,
page 22.
REMOTE CONTROL ACCESSORIES
There is an optional hand-held ON/OFF re-
mote control that can be purchased separately
for this log set. You must use the millivolt
valve/safety pilot kit to use remote acces-
sories with this appliance. See Accessories,
page 22.
A wall switch is also available for this appli-
ance. You must use the millivolt valve/safety
pilot kit to use the wall switch with this appli-
ance. See Accessories, page 22.
OPTIONAL PRODUCT FEATURES
fire-parts.com

www.desatech.com
901267-01E 5
INSTALLATION
CAUTION: Do not remove

    
   -
formation.


    
-

   
    



-
-

NOTICE: Installation, service

-




listed in these instructions may

 

    -
   
this kit or use of unauthorized

   
warranty and may result in a
hazardous condition.
FLUE OPENING SPECIFICATIONS
Note: This vented appliance must be installed
only in a solid-fuel burning replace with a
working ue and constructed of noncombus-
tible material.
The charts in Figure 2 indicate technical
information regarding the installation of your
gas log set. Please make sure that all of the
specications shown are applicable before
installation is attempted.
The replace must include a working ue and
venting system with the minimum openings
shown in the Figure 2.
MODEL
Btu/Hr

Natural
Gas
Btu/Hr


LP Gas
Minimum
Vent

VVMR18
FVMR18
18" Multi-Side
55,000 45,000 8" dia.
VVMR24
FVMR24
24" Multi-Side
65,000 55,000 8" dia.
MINIMUM FIREBOX SIZES
LOG
SIZE
FRONT
WIDTH*
BACK
WIDTH**
DEPTH HEIGHT
18" 28" 28" 16" 18"
24" 29 3/4"29 3/4" 16" 18"
**At depth indicated
FUEL INLET PRESSURE

Min. Max.
NG 5.5" 10.5"
LP 11" 13"
Figure 2 - Technical Information Charts
BURNER ORIFICE

Size
Natural 
In. Num. In. Num.
18" 0.111 34 0.073 49
24" 0.129 30 0.086 44
fire-parts.com

www.desatech.com 901267-01E6
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 22).
Call dealer where you bought log set.
If the replace does not have a gas supply
shutoff valve, one must be installed.
VENTING SPECIFICATIONS FOR
INSTALLATION
The replace chimney ue 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 replace. 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 ame and remove any obstruc-
tion until proper venting is achieved.
The chimney ue must remain open a mini-
mum 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 replace, another suitable clamp
or permanent stop must be installed or the
damper blade must be cut or removed.
INSTALLATION
Continued
Figure 3 - Attaching Damper Clamp
CONNECTING TO GAS SUPPLY
-
    
     
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,
     -


     



volume will occur.
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).
Figure 4 - Gas Connection
* Purchase the optional CSA design-certied
equipment shutoff valve from your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
3" Minimum
Sediment Trap
From Gas
Meter
(5" W.C.** to
10.5" W.C.
Pressure)
CSA Design-Certied
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved
Gas Hose
Cap Pipe Tee
Nipple Joint
Damper
Damper
Clamp
Damper


Damper
Clamp
Damper
fire-parts.com

www.desatech.com
901267-01E 7
INSTALLATION
Continued
Figure 5 - Checking Gas Joints
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 NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could
result in a clogged burner injector.
    


We recommend that you install a sediment
trap in supply line as shown in Figure 4, page
6. Locate sediment trap where it is within
reach for cleaning. Install in piping system
between fuel supply and heater. Locate sedi-
ment 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

and connections, internal and
external to unit, for leaks after

all leaks at once.




a leak. Correct all leaks at once.

System
Test Pressures In Excess Of 1/2 PSIG

1. Disconnect appliance with its appliance
main gas valve (control valve) and equip-
ment 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 equip-
ment shutoff valve was connected.
Gas Meter
Equipment
Shutoff
Valve
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 sys-
tem. Apply noncorrosive leak detection
uid 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
ttings for leaks.


1. Close equipment shutoff valve (see Fig-
ure 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 equip-
ment shutoff valve (see Figure 5). Apply
mixture of liquid soap and water to gas
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
HEARTH KIT ASSEMBLY AND
INSTALLATION

1. Unscrew burner inlet tting from burner
manifold.
2. Place burner manifold in pan with
threaded opening facing open knockout
plug (see Figure 6, page 8). Make sure
the burner ports face downward.
3. Using thread sealant (resistant to the action
of propane/LP gas) on larger end of tting,
screw the burner inlet tting through hole
and into burner manifold. Tighten using
a wrench. If using propane/LP gas, see
Propane/LP Gas Conversion, page 10.
fire-parts.com

www.desatech.com 901267-01E8
4. If using optional GA9050A-1 kit, go to
Optional GA9050A-1 ON/OFF Safety
Valve/Pilot Kit section for installation
instructions. If using optional GA9150A
kit, follow instructions included with kit for
installation and operation.
5. Using thread sealant on male threads,
install burner connection fittings into
1/8" NPT holes on each side of burner
manifold.
6. Press right and left side burners onto
burner connection ttings. Burner porting
should face downward (see Figure 6).
Figure 6 - Installing Burner
Burner Inlet Fitting
Burner Manifold
Burner Connection
Fittings
Side
Burners
INSTALLATION
Continued
Installation and Gas Connection
1. Place burner pan assembly in center of
replace oor. Make sure inlet end of pan
faces gas supply.
2. Thread gas supply tting to replace gas
supply pipe. Use thread sealant.
3. Install adapter tting onto burner inlet tting
using thread sealant on male threads of
burner inlet tting (see Figure 7). Adjust to
most convenient position.
4. Install gas connector tube to gas supply
tting. Carefully shape tube to attach to
adapter tting. Be careful not to cause
kinks in tube.
5. Using 1/4" x #8 provided, install cover over
inlet tting.

OFF SAFETY VALVE/PILOT KIT
ASSEMBLY
For additional convenience and safety or for
propane/LP conversion, an optional ON/OFF
Safety Valve/Pilot Kit is available. See Acces-
sories, page 22.
WARNING: You must use a
ON/OFF Safety Valve/Pilot Kit for

Note: The control cover provided with
GA9050A-1 should be discarded and replaced
with control cover provided with log set.
Natural Gas Installation
1. Thread gas control valve onto burner inlet
tting (see Figure 8). Use thread sealant
on male threads of burner inlet tting. Hold
burner inlet tting with a wrench to prevent
overtightening connection to burner. Make
sure control rod is facing the front (see
Figure 8).
Figure 7 - Connecting Gas to Appliance
Adapter Fitting
Gas Connector
Tube
Burner Inlet
Fitting
Gas
Control
Valve
Burner Pan
Assembly
Figure 8 - Installing Gas Control Valve
Control Rod
Burner Pan
Assembly
fire-parts.com

www.desatech.com
901267-01E 9
INSTALLATION
Continued
Figure 9 - Gas Control Valve with
Thermocouple and Pilot
Thermocouple
and Line
Pilot and
Line
Gas Control Valve
Figure 10 - Installing Inlet Fitting and
Gas Connector Tube
Gas Control
Valve
Gas
Inlet
Fitting
Gas Connector
Tube
Inlet
Opening
2. Attach pilot gas line to pilot outlet of gas
control valve and tighten. Connect ther-
mocouple to rear of gas control valve.
See Figure 9. Do not overtighten. If us-
ing propane/LP gas, see Changing Pilot
Orice, page 10.
3. Install inlet tting into inlet opening of gas
control valve (see Figure 10). Use thread
sealant on male pipe threads.
4. Place burner pan assembly in center of
replace oor. Make sure front of pan
faces the room from which you wish to
control appliance.
5. Thread gas supply tting to replace gas
supply pipe. Adjust to most convenient
position.
6. Install gas connector tube to gas supply
tting. Carefully shape tube to attach to
adapter tting. Be careful not to cause
kinks in tube.
7. Test for leaks following instructions under
Testing Burner for Leaks, page 11.
8. Retighten and adjust location of gas con-
trol as necessary. Gas control should be
level, with control rod to the front.
9. Attach cover, provided with log set, to
burner pan using screws provided.
10. Install thermocouple, pilot and ignitor onto
valve cover as shown in Figure 11. Use
the provided screws.
11. Push control rod extension onto “D”
shaped control rod through center hole
in cover.
Piezo
Ignitor
Control Rod Extension
Screw
Valve
Cover
Control
Knob
Figure 11 - Installing Cover, Control
Knob and Piezo Ignitor
Thermocouple
Pilot
12. Install control position decal and control
knob making sure to align marks with
correct stop positions of gas control. Pilot
position will allow knob to push in about
1/2". Align decals in pilot position.
Ignitor
fire-parts.com

www.desatech.com 901267-01E10
INSTALLATION
Continued

To convert to propane/LP gas, burner inlet
tting and pilot orice must be replaced. The
propane/LP burner inlet tting is supplied with
orice installed for a 24" log set. If you have an
18" set, you must change this orice also. See
Figure 1, page 4, for product identication.

1. Remove burner inlet tting from burner
pan assembly (see Figure 12). DO NOT
remove orice from tting. Propane/LP
burner inlet tting is included in hard-
ware kit (see Figure 13).
2. Be sure to use correct orice for your ap-
pliance. The hardware kit included with
this appliance contains two orices with
a cone-like shape. If you have an 18"
set, orice for burner inlet tting is red. If
you have a 24" log set, orice is already
installed inside the tting. The black orice
will not be used in any multi-side unit and
may be discarded.
3. For an 18" set, use a 10 mm socket or nut
driver to remove orice from propane/LP
burner inlet tting. Choose the correct
orice for your log set size and install in
place of orice you just removed.
4. Using thread sealant (resistant to action
of propane/LP gas) on larger end of tting,
screw burner inlet tting through hole
and into burner manifold. Tighten using a
wrench.
5 . Follow steps 1 through 12 under Natural
Gas Installation, page 8.
Figure 13 - Burner Inlet Fittings with
Injectors
Figure 12 - Remove Burner Inlet Fitting
Burner Inlet Fitting
for Natural Gas
Figure 14 - Installing Propane/LP Pilot
Orice
Pilot Injector

The pilot is provided with a natural gas ori-
ce installed. For propane/LP gas you must
remove natural gas orice and replace it with
a propane/LP orice. The hardware kit con-
tains a propane/LP orice with a red stripe for
converting pilot.
1. Gently loosen and remove pilot line connec-
tion from bracket (see Figure 14).
2. Replace injector (see Figure 14) with
propane/LP pilot injector with red stripe.
3. Replace and tighten pilot line to bracket.
4. Continue with step 3 under Natural Gas
Installation, page 8.
NATURAL
GAS
FITTING
PROPANE/
LP GAS
FITTING
Injector for
Natural Gas
Injector for
Propane/LP Gas
fire-parts.com