Desa Vanguard EVGL850N Quick start guide

Save this manual for future reference.
OWNER’S OPERATION AND INSTALLATION MANUAL
B-VENT DECORATIVE GAS FIREPLACE
®
EVGL850N (NATURAL) ELECTRONIC IGNITION
This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited by state
or local codes.
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, unless a certified kit is used.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.
FOR YOUR SAFETY
— Do not store or use gasoline or any other flam-
mable vapors or liquids in the vicinity of this or
any other appliance.
— WHAT TO DO IF YOU SMELL GAS :
• Do not try to light any appliance.
• Do not touch any electrical switch;
• Do not use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• Ifyoucannotreachyourgassupplier,callthe
fire department.
— Installationandservicemustbeperformedbya
qualified installer, service agency, or the gas
supplier.
SAVE THIS BOOK
Thisbookisvaluable.Inadditiontoinstructing
you on how to install and maintain your appli-
ance, it also contains information that will
enable you to obtain replacement parts or
optional accessory items when needed. Keep
it with your other important papers.
WARNING: Improper installation,
adjustment, alteration, service or
maintenance can cause injury or
property damage. Refer to this
manual.Forassistanceoradditional
information consult a qualified in-
staller, service agency, or the gas
supplier.
NOT FOR USE WITH SOLID FUEL
CHECK LOCAL CODES PRIOR TO
INSTALLATION
WARNING: If the information in these instruc-
tions is not followed exactly, a fire or explosion
may result causing property damage, personal
injury or death.

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107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
29"
(737mm)
5/8"
(16mm)
15 3/8"
(391mm)
9"
(229mm)
36"
(914mm)
38 1/8"
(968mm)
21 3/4"
(552mm)
4 7/8"
(124mm)
33 3/8"
(848mm)
34 1/4"
(870mm)
22 1/2"
(572mm)
9 5/8"
(244mm)
27"
(686mm)
10 3/4"
(273mm)
Left Side
9 3/4"
(248mm)
Right Side
13"
(330mm)
2 3/8"
(60mm)
32"
(813mm)
33 13/16"
(859mm)
HEARTH AREA
DIMENSIONS
TOP VIEW
FRONT VIEW
RIGHT SIDE VIEW
FRONT INSIDE VIEW
Figure 1 - Appliance Dimensions
Control Access Door
Outside Air
Kit Location
(Optional)
For Use With
5" ø Type B-1
Vent Pipe
Only
Glass Door
Control Valve (Behind
Control Access Door)

3
107050
OWNER’S MANUAL
ModelEVGL850Nisaradiantheatdecora-
tive gas appliance that use an electronic gas
control valve with electronic ignition sys-
tem. A 5” B-Type venting system and a
listed type vent cap are not supplied but are
required for proper operation. See venting
instructions on pages 6 and 7.
This appliance, when installed, must be
electrically grounded in accordance with
localcodes or,intheabsenceoflocalcodes,
with the National Electrical Code, ANS/
NFPA 70 or the Canadian Electrical Code,
CSA C22.1.
The installation must conform with local
codesor, inthe absenceof localcodes, with
the current National Fuel Gas Code, ANS
Z223.1 or with the current CAN/CGA B149
Installation Codes.
This appliance complies with ANS Z21.50-
1998 and CSA 2.22-M98 as Vented Gas
Fireplaces and is listed and tested by the
Canadian Standards Association to the
above test standards.
INTRODUCTION
WARNING: This gas appli-
ance must not be connected to a
chimney flue servicing a solid
fuel burning appliance.
• Model EVGL850N uses NATURAL
GAS ONLY.
If you have any doubts as to which gas your
particularunitisapprovedandtestedforuse
with, please check the rating plate located
behind the control access door (Figure 1,
page 2).
BEFORE YOU BEGIN
Before beginning the installation of your
appliance, read these instructions through
completely.
ThisDESAapplianceanditsapprovedcom-
ponentsaresafewheninstalledaccordingto
this installation manual and are operated as
recommended by DESA. Unless you use
DESA approved components tested for this
appliance, YOU MAY CAUSE A FIRE
HAZARD!
The DESA warranty will be voided by, and
DESA disclaims any responsibility for the
following actions :
A) Modification of the appliance or any of
the components.
B) Use of any component part not ap-
proved by DESA in combination with
this appliance.
C) Installation and/or operation in a man-
nerother than instructed in this manual.
D) The burning of anything other than the
type of gas approved for use in this gas
appliance.
WARNING:Installationofthis
appliancemustbedonebyaquali-
fied service person well trained
in the installation of such appli-
ances.Youwillalsoneedabuild-
ing permit from your local Build-
ing and Safety Commissioner
before installing this appliance;
otherwiseyourinsuranceco.may
not cover this appliance.
Thisapplianceisnotintendedto
be used as a primary source of
heat.
CAUTION: Do not connect
appliance before pressure test-
ing gas piping. Damage to gas
valve may result and an unsafe
condition may be caused.
Theapplianceandit’sindividualequipment
shutoffvalvemustbedisconnectedfromthe
gas supply piping system during any pres-
sure testing of that system at test pressures
in excess of 1/2 psig (3.5 kPa).
Theappliancemustbeisolatedfromthegas
supply piping system by closing its indi-
vidual equipment shutoff valve during any
pressure testing of the gas supply piping
systemat testpressures equalto orless than
1/2 psig (3.5 kPa).
For the purpose of input adjustment two
pressure taps (for IN and OUT pressures)
areprovidedonthegascontrolvalvefortest
gauge connections to the appliance.
GAS RATING
Type of Gas Natural
Max. Input Rating: 21,000 Btu/hr
Manifold Pressure: 3.5 in. WC (.87 kPa)
Minimum Supply Pressure: 4.5 in. WC (1.12 kPa)
Maximum Supply Pressure: 10.5 in. WC (2.66 kPa)
Orifice Size: # 45

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107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
CLEARANCES
Minimum clearances to combustibles are:
• Back and Sides
of Outer Surround: ................1/2" min.
• Drywall to Sides of
Front Face (Nailing Flanges): ..0" min.
• "B" Vent Surfaces:.................... 1" min.
• Ceiling to Opening:........... 41 1/2" min.
• Floor: ........................................0" min.
Figure3-MinimumClearances(TopView)
Figure 4 - Minimum Clearances (Front
View)
CAUTION: Do not block re-
quired air spaces with insula-
tionoranyothermaterial.Donot
obstructeffectiveopeningofap-
pliance with any type of facing
material.
1/2" MIN.
(13mm) 1/2" MIN. (13mm)
0"
Nailing
Flange
Front Face
Left Side
Surround Back
41
1
/ 2 "
(1054mm)
Min. Clearance
From Opening
To Ceiling
1" (25mm) Min.
Clearance to “B”
Vent’s Outer Pipe
0" Clearance
0" Clearance
To Floor (On
Noncombustible
Surface)
Do Not Block
Or Obstruct
Opening
PRE-INSTALLATION
PREPARATION
To determine the safest and most efficient
location for your appliance, you must take
intoconsiderationthefollowingguidelines:
1. The location must allow for proper
clearances (see Clearances).
2. Consider a location where heat output
wouldnot beaffectedby drafts, air con-
ditioning ducts, windows, or doors.
3. A location that avoids the cutting of
joists or roof rafters will make installa-
tion easier. Figure 2 shows a plan view
of a few common locations.
4. Do not use this appliance if any part
has been under water. Immediately call
aqualified service technician to inspect
the appliance and to replace any part
of the control system and any gas con-
trol that has been under water.
Flush installations are recommended
where living space is limited or at a pre-
mium, and since the space required to en-
close the appliance would be located be-
yondanoutsidewall,thiswouldalsoreduce
the cutting of joists, roof rafters, and such.
Check local codes for any restrictions.
Projected installations can extend any
distanceintotheroom. A projection maybe
ideal for a new addition on an existing,
finished wall.
Corner installations make use of space
thatmay not normally be usedand provides
a wider and more efficient range for radiant
heat transference.
Internal wall installations provide a dis-
creetoptionforroomseparationandcanalso
be ideal as an addition to an existing wall.
SELECTING
LOCATION
Figure2-PossibleLocationsforInstalling
Appliance
INTERNAL WALL
INSTALLATION
CORNER
INSTALLATION
FULL
PROJECTION
INSTALLATION
FLUSH
INSTALLATION
Also, in selecting a location, the following
precautions must be observed:
1. Do not connect this appliance to a
chimney system used for a solid fuel
burning fireplace.
2. Install in an area providing ventilation
and adequate combustion air.
3. Due to high temperatures, theappliance
should be located out of traffic and
away from furniture and draperies.
4. NEVER obstruct the front opening of
the appliance or the flow of combus-
tion and ventilation air. Keep control
compartments accessible.
5. Do not locate in the vicinity where
gasoline or other flammable liquids
maybe stored.The appliancearea must
be kept clear and free from these com-
bustible materials.
6. Ahearth extension is not required with
this appliance. If one is installed, it is
foraesthetic purposes onlyand doesnot
haveto meetthe standard requirements.
7. If the appliance is installed on a sur-
face other than wood flooring (such as
carpeting, tiles, etc.) a metal or wood
panel should be added, extending the
full width and depth of the appliance.
Drywall
2 x 4 Stud
Ceiling
Areas Indicated with
an “✳” are Required
Air Spaces. Do Not
Pack with Insulation
or any Other Material.

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107050
OWNER’S MANUAL
MANTEL CLEARANCES AND
WALL DETAILS
Acombustiblemantel shelfmaybeinstalled a
maximum 9" (229mm) from the wall and
musthaveaminimumdistanceof18"(457mm)
above the fireplace opening. Figures 5 and 6
show the minimum allowable distances from
various combustible mantle components in
relation to the fireplace opening.
Figure 5 - Mantel Clearances - Side View
(Cross Section)
Figure 6 - Side Clearances - Top View
(Cross Section)
FRAMING
1. Frame appliance enclosure as illus-
trated in Figures 7 and 8.
Note: If a wall covering is used to line
the enclosure, then all measurements
mustbefromthesurfaceofthe covering.
2. Place the applianceinto theframing and
secure it.
Note: If appliance is to be raised above
floor level, a platform must be built to
support the appliance.
3. Install the supply line to the appliance
usinga 1/2"NPTblackiron gas line ter-
minating 2 5/16" above the bottom of the
appliance.The gas line may be installed
from either side or from the rear of the
appliance (see Figure 15, page 9).
Figure7-RoughOpeningforInstallingin
Wall
Figure 8 - Rough Opening for Corner
Installation
41
7
/ 8 "
(1061mm)
15"
(381mm)
36
1
/ 4 "
(921mm)
59
1
/ 4 "
(1505mm)
29
5
/ 8 "
(752mm)
21
3
/ 16 "
(538mm)
CORNER INSTALLATION
15
5
/ 8 " Min.
(397mm)
36
1
/ 4 "
(921mm) Min.
38
1
/ 8 "
(968mm) Min.
29.5°
9"
(229mm)
6"
(152mm)
12"
(305mm)
6" Min.
(152mm)
3" (76mm)
1
1
/ 2 "
(38mm) Max.
1
1
/ 2 "
(38mm) Max.
3" (76mm) Max.
6" (152mm) Min. Within 12"
(305mm)
18" (457mm)
Min.
33°
TOP VIEW
Safe
Zone
Combustible
Materials
Spacer
Header
Combustible
Material May
Be Used
WARNING:Whenfinishingap-
pliance, Do not overlap combus-
tiblematerialontotheblackfront
face.Brick,tile,orothernoncom-
bustiblematerialsmaybeapplied
to the face provided that any gap
isbetweenthematerialused and
the face is caulked with a non-
combustible caulking.
4. Feedflexiblegaslinethroughoneofthree
gas line conduit sleeve and repack insu-
lationto coverany openings. Prepare the
incominggaslinewith teflon tape or pipe
joint compound and hook-up incoming
gas line to the flexible gas line.
Note: If 1/2" NPT black iron pipe does
not mate with fitting at the end of flex-
ible gas line, remove fitting and replace
witha37 degree flare3/4"-12,1/2"NPT
(female) fitting.
Outer Surround

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107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
VENTING
INSTALLATION
AB-typeventingsystemmustbeconnected
totheappliance forventingto the outsideof
the building.
Thefollowingsectionisprovidedasaguide
to a standard B-type vent installation.
StandingcodesrequirementsconcerningB-
typeventinstallationsmayvarywithinyour
state, province or local codes jurisdiction.
Therefore,itisrecommendedthatyoucheck
with your local building codes for specific
requirements or in absence of local codes,
follow Section 7.0 of the current National
Fuel Gas Code NFPA No. 54/ANS Z223.1
and in Canada with CAN/CGA B149 for
Category I systems using double wall B-1
vent pipe.
Thisgasappliancemust be vertically vented
to the outdoors only and may not be termi-
nated into an attic space or into a chimney
flueservicingasolid-fuelburningappliance.
This appliance may be vented through a
manufacturedchimneysystemoramasonry
chimney using a B-vent adapter or a chim-
ney liner system if all are listed, inspected
andapprovedbylocalcodesand/orbuilding
authorities.
TheexamplesshowninFigure9aretypical
ofmostB-ventinstallationsandcodesprac-
tices.
Example1: Showstheminimumallowable
system height and lateral offset for a 60°
degreeorgreaterinclination.Codespecifies
that offsets at 60°degrees or greater are
considered horizontal and must follow the
75% percent rule for lateral to total vertical
system height. Codes also allows only one
offset in the total system when at 60°de-
grees or greater. The total vertical height in
thisexamplerepresentstheminimumheight
of 8 feet and therefore the allowable lateral
is 6 feet when the 75% percent rule applies.
If the lateral length must exceed 75% then
thesystemmustbesizedinaccordancewith
the Category I venting tables.
Maintain
Listed
Clearance
12' Min.
12' Min. 45°
45°
6'
8'
12' Min.
60°45°
Position
Firestop
Position
Firestop
Position
Firestop
Listed
Vent Cap
Listed
Vent Cap
Listed
Vent Cap
Maintain
Listed
Clearance
Maintain
Listed
Clearance
Maintain
Listed
Clearance
Maintain
Listed
Clearance
Maintain
Listed
Clearance
Support Each
Lateral At
Least Every
Six (6) Feet
Maintain
Listed
Clearance
10'
EXAMPLE 3EXAMPLE 2EXAMPLE 1
Example 2: Shows a multiple offset each
at 45°degrees of inclination. Multiple off-
sets are permitted if they do not exceed 60°
degrees of inclination. The total lengths of
the two offsets are not required to meet the
75% percent allowable rule.
Example 3: Shows a single offset at 45°
degrees of inclination and therefore the
lateral length at 10 feet of offset does not
have to meet the 75% percent rule.
In each case the offsets must be supported
and firestops must be positioned wherever
the vent must pass through a sub-floor,
ceiling joist or an attic overhang. The vent
pipe must terminate vertically into a listed
typevent cap andextend a sufficientheight
through an approved roof flashing, roof
jackoraroofthimble.Atallpointsthelisted
clearances must be maintained.
Figure 9 - Typical B-Vent Configuration

7
107050
OWNER’S MANUAL
CHECKING FOR PROPER
VENTING
Aftercompletingandcheckingtheelectrical,
gasandventconnections,followthelighting
instructionsandallow the mainburnertorun
for approximately 5 minutes. Hold a lighted
match or cigarette near the top edge of the
window frame and play it along the entire
lengthofthe window (seeFigure11).Proper
venting should tend to draw the flame or
smoke into the appliance. Improper venting
or escaping of spillage of burned gas, is
indicated when the match flickers or goes
out. Smoke from a cigarette will also tend to
disperse away from the appliance.
If the appliance is found to be improperly
venting, shut it off and notify your installer
or a qualified service agency to inspect the
venting system.
WARNING: This appliance
must be properly connected to a
B-Vent system and must not be
connectedto achimney flueser-
vicingaseparatesolidfuelburn-
ing appliance.
NOTICE: This appliance is
equipped with a vent safety
shutoff switch which will shut
downtheapplianceinthecaseof
a venting problem. Do not by-
passtheventsafetyswitch.Ifthe
applianceshouldshutdown,con-
tact a qualified installer, service
agency, or your gas supplier to
have the vent inspected before
operating.
Ventterminations must belocated in accor-
dance with height and proximity rules of
NFPA No. 54 or CAN/CGA B149. These
rulesapplytoventsat12in.diameterorless
and require a minimum height in accor-
dancewith theroof pitchand aminimum of
8ft.distancefromaverticalwallorobstruc-
tion (see Figure 10).
VENTING
INSTALLATION
Continued
If venting horizontally through a side wall
becomes necessary, a listed thimble ap-
proved for use with B-type vent must be
used. Check with your local codes before
venting through a side wall.
Some codes areas allow the use of existing
B-type vent systems if the system is at or
above the recommended diameter of the
flue; in this case 5".
The flue connection must be made using
listed B-type connectors and the existing
system must be code inspected for damage
and proper installation.
Itisnotrecommendedthatthisappliancebe
common vented with an existing gas burn-
ing appliance. However, if it becomes nec-
essary to common vent this appliance, the
venting system must be sized and config-
ured in accordance with the common vent-
ing guides Appendix G of the current Na-
tional Fuel Gas Code NFPA No. 54/ANS
Z223.1andinCanadawithCAN/CGAB149.
Note: Before connecting this appliance to
an existing vent system or a common vent-
ingsystemconsultwithyourlocalarchitect,
planner, or building official.
Lowest
Discharge
Opening
Listed
Vent Cap
8 Ft. Min.
Roof Pitch x/12
Listed Clearance
12
x
Listed Gas
Vent
H (Min)
Height
From Roof
H (Min.)
Roof Pitch Ft. m
Flat to 6/12 1.0 0.30
6/12 to 7/12 1.25 0.38
Over 7/12 to 8/12 1.5 0.46
Over 8/12 to 9/12 2.0 0.61
Over 9/12 to 10/12 2.5 0.76
Over 10/12 to 11/12 3.25 0.99
Over 11/12 to 12/12 4.0 1.22
Over 12/12 to 14/12 5.0 1.52
Over 14/12 to 16/12 6.0 1.83
Over 16/12 to 18/12 7.0 2.13
Over 18/12 to 20/12 7.5 2.27
Over 20/12 to 21/12 8.0 2.44
Figure 10 - B-Vent Terminations
Check this area along the entire top edge
of the glass frame. Smoke or flame should
be drawn into the appliance opening.
Figure 11 - Checking for Spillage

8
107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
INSTALLATION
OPTIONAL REMOTE
CONTROL INSTALLATION
(Model WRC)
Note: If using optional wireless hand-held
remote control, the wall switch must be in
the ON position to be operational. The re-
mote control then becomes the switching
mechanism for fireplace operation.
1. The WRC model receiver does not re-
quire a battery. The receiver can be in-
stalled by first plugging the short ex-
tension cord into the fireplace recep-
tacle. Then plug the receiver unit into
the extension cord. Finally plug the ig-
nitionmodule plug intothe receiver unit
(see Figure 12).
2. Activate the remote handset battery by
removingthe insulating tab on the back
of the handset (see Figure 13). The bat-
tery is included pre-installed.
3. Once the battery is activated the unit is
ready to use.
WALL SWITCH
INSTALLATION (EVGL850N)
The installation of a wall switch allows you
toactivatethegascontrolvalveandturnthe
fireplaceonandoff.Thewallswitchistobe
connected to the incoming 120 volt regular
household wiring that supplies the electric-
ity to the fireplace. Refer to wiring diagram
in this manual on page 14.
Figure 13 - Installing Battery into Back of Handset
Pull to Remove
Insulation Tab
Battery Cover
12 Volt Battery
Figure 12 - Installing the WRC Remote Receiver
Fireplace
Receptacle
Remote Control
Receiver
Extension Cord
Ignition Module Plug
Back of Handset

9
107050
OWNER’S MANUAL
INSTALLATION
Continued
Continued
WARNING: All gas piping
andconnectionsmustbetested
for leaks after the installation is
completed.
After ensuring that the gas valve
is on, apply a soap and water
solution to all connections and
joints. If bubbles appear, leaks
can be detected and corrected.
Donotuseanopenflameforleak
testing and do not operate any
appliance if a leak is detected.
Complete your gas installation by connect-
ingincoming gasline with flexible gas line.
Secure tightly with wrench but Do NOT
Overtighten.
CAUTION: Compounds used
on threaded joints of gas piping
shall be resistant to the action of
Liquefied Petroleum (LP or pro-
pane), and should be applied
lightly to ensure excess sealant
does not enter the gas line.
GAS LINE HOOK-UP
Figure 14 - Equipment Shutoff Valve
Installation
Figure 15 - Routing Incoming Gas Line
WARNING: Gas line hookup
should be done by your gas sup-
plieroraqualifiedserviceperson.
WARNING: Before you pro-
ceed,makesureyour gassupply
is OFF.
11"
(279mm)
4
5
/ 8 "
(117mm)
5
5
/ 8 "
(143mm)
1/2" NPT Incoming
Black Iron Gas
Line
Flexible Gas Line (1 Provided) Can Be
Extended Out from 3 Sides
Typical Exterior Wall Gas
Shutoff Installation
CAUTION: Do not kink flex-
ible gas line.
DESA recommends that a black iron gas
line be routed from the gas source, through
a sediment trap (shown in Figure 16), and
intothe appliance, Once connected through
the appliance, a flexible gas line may be
used for ease of installation to gas control
valve (see Figure 17).
Beforeconnectingtheblackirongaslinetothe
insideoftheapplianceasedimenttrapmustbe
included outside the appliance between the
gas line and the equipment shutoff valve. It
mustextenddownthree(3)inchesbeyondthe
center of the pipe. Prepare incoming black
iron gas line with teflon tape or pipe joint
compound(Checkwithlocalbuildingcodes).
An equipment shutoff valve has been in-
cludedintheappliance’sgassupplysystem.
You may consider installing an extra gas
shutoffvalve outside theappliance’s enclo-
sure(checkwithlocalcodes)whereitcanbe
accessed more conveniently with a key
through a wall as shown in Figure 14.
Inconformancewithlocalcodes,routea1/2”
NPT gas line towards the appliance coming
in from any of the 3 directions shown in
Figure 15.
Key Extension
Equipment
Shutoff Valve
3" Min.
(76mm)
Side Wall
Of Appliance
Incoming 1/2" Gas Line
Permitted by Local Codes
Sediment Trap
(Not Supplied)
Figure 16 - Sediment Trap
Equipment
Shutoff
Valve
Flexible Gas Line
Do NOT Kink
1/2" NPT
Incoming
Gas Line
Inlet
Pressure
Tap
Outlet
Pressure
Tap
Note:
1) Wire Connections
Not Shown for Clarity
2) * 1/8" NPT Plugged
Tapping
Figure 17 - Connecting Flexible Gas Line to Electronic Valve
Red Surface Indicates
For Propane/LP Use Only

10
107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
4
3
2
1
INSTALLATION
Continued
GAS BURNER SUPPLY
HOOK-UP
1. Disconnect the burner form the burner
mounting flange by removing two
screws (see Figure 18).
2. Disconnect the pilot from the burner by
removing three screws holding the pi-
lot mounting bracket (see Figure 18).
3. Rotate the back of the burner forward
and lift out of the firebox. Note: Do
not damage pilot and gas line.
4. Remove the bottom refractory by lift-
ing and sliding out the front (see Fig-
ure 19). Note: Do not kink or damage
the flex line connector.
5. Remove the hearth pan with controls
intact by removing two screws at ei-
ther side of the pan.
6. Follow steps 1,2,3,4, and 5 in reverse
order to reinstall burner assembly.
LOG & EMBER PLACEMENT
1. Center the rear log on the support
bracket welded to the back of the
burner. Press the log down onto the
bracket (see Figure 20).
2. Align the groove cut into the bottom of
the front log over the metal strip on the
burner. Make sure the metal strip is
completely in the groove. Also make
sure the notches in the bottom of the
logalign over theburner holes asshown
in Figure 21.
3. Place the straight, left log piece into the
notches on the left side of the front and
rear logs (see Figure 22).
4. Place the “T”-shaped, right log piece
into the notches on the right side of the
front and rear logs (see Figure 23).
NOTICE: Do not put lava rock on
burner or under burner. Placing
lava rock on burner could cause
performance problems.
Figure 18 - Removing Burner Assembly
Figure 19 - Removing Bottom Refractory
Burner Mounting
Screws (2)
Pilot Attaching
Screws (3)
1. Remove
Front of
Burner
2. Lift Refractory Over
Front Edge of Burner
Mounting Pan and
Remove from Firebox
Next remove the ember material from the
bag and flatten small amounts into pieces
about the size of a dime. Place the pieces
loosely onto the exposed section of the
burner ember tray, which is located on the
very front of the burner grate. This will
create the glowing appearance as the flame
touches the ember material. Do not block
burner ports by using too much ember ma-
terialinonearea.Sprinkleasmallamountof
vermiculite provided in the separate bag
over the embers to complete the effect. It is
not necessary to use all of the ember or
vermiculite materials provided.
To enhance the look of the hearth you may
optionallyplacethelavarockprovidedaround
the front and sides of the burner. When fin-
ished replace the glass door, see Glass Door
Removal and Replacement on page 11.
Figure 20 - Installing Rear Log
Figure 21 - Installing Front Log
Figure 22 - Installing Left Log Piece
Figure 23 - Installing Right Log Piece
Rear Log
Burner Bracket
Front Log
Metal Alignment
Strip
Left Log
Piece
Notches
Right Log
Piece
Notches
Notches
Ember
Material

11
107050
OWNER’S MANUAL
COMBUSTION AIR KIT
MODEL AKGL (OPTIONAL)
The outside air kit may be installed on the
rightsideof the fireplaceonly.Theventcan
be installed through the outside wall or a
ventilated crawl space. The handle to oper-
ate the damper door for the outside air inlet
will be located behind the burner valve
access door when the kit is installed (see
Figure 24). Pull the handle to open or push
to close.
APPLIANCE ENCLOSURE
Before finishing the enclosure around the
appliance, inspect all joints around the outer
surround. Any gaps between the nailing
flangesandtheframingshouldbesealedwith
noncombustible insulation or caulking.
If the appliance is mounted on a raised
platform, it must be a continuous surface
and not on blocks without a solid surface.
This will prevent the entry of cold air by
means of conduction through the total bot-
tom of the appliance. (see Figure 25).
CAUTION: Air inlet ducts are
not to terminate in attic space.
To replace, insert top door pins into spring
clipslocatedonthetopface.Makesurepins
are properly secured to the clips. As you
hold top portion in place, swing bottom of
door towards bottom face until the bottom
doorpins cleartheflangeandtheninsertthe
lowerpinsintothelocatingslotsuntilseated
(see Figure 26).
Note: some adjustment maybe required in
order to align door pins to clip (top) and
locating slots (bottom).
This can be done by loosening the screw
securingbothspringclipandpivotplateand
sliding it to the proper location.
GLASS DOOR REMOVAL
AND REPLACEMENT
To remove, hold the glass door firmly at
handles and evenly push straight up until
bottom pins are free from location slots
(see Figure 26). Slightly swing door to-
wards you. At this point, while maintain-
ing glass door secured at one handle, grasp
the side of glass panel for better grip and
slightly pull glass door down to free top
pins from spring clips.
Note: Glass door may be heavy for some
individuals.Ifthisisthecase,pleaserequest
help from someone else.
CAUTION: For use with glass
doorscertifiedwiththeappliance
only.
CAUTION: Do not operate
theappliancewiththeglassdoor
removed.
WARNING: Children and
adults should be alerted to the
hazardsofhighsurfacetempera-
tures and should stay away to
avoid burns or clothing ignition.
Youngchildren should besuper-
vised when they are in the same
room as the appliance.
• Whenordering replacement or accessory
itemspleasehave yourappliance’smodel
name or number and the part number of
the item (s) you are ordering ready. The
model name or number for your particu-
lar appliance may be found on the rating
plate located inside the appliance.
• Refer to Replacement Parts, page 17
when ordering replacement parts for
your appliance.
• Repair parts or accessory items may be
bought from your local representative.
• All product specifications are subject to
change without notice.
WARNING: Installation and
repair should be done by a quali-
fiedserviceperson.Theappliance
should be inspected before each
useandatleastannuallybyaquali-
fiedserviceperson.Morefrequent
cleaning may be required due to
excessivelintfromcarpeting,bed-
ding material, pet hair, etc. It is
imperative that the control com-
partments, burners, and circulat-
ing air system be kept clean.
Figure 24 - Air Kit Handle Location
Air Kit Handle
Side
Framing Side
Framing
Caulk Here Pack Insulation
Figure 25 - Sealing Between Appliance
and Framing
INSTALLATION
Continued
Spring Clip
Locating Slot
Figure 26 - Removing Glass Door
Instructionsfortheinstallationofthegaskit
are included with the glass door package.
Use of any other glass door assembly not
testedwiththeEVGL850Nmodelmaycon-
stitute a fire hazard and will void the DESA
International warranty. Please read and fol-
low the maintenance instructions for your
glass doors as outlined below.
• Never use an abrasive material to clean
the glass. Use a rag and a liquid cleaner.
• Never clean the glass while they are hot.
• Always operate the appliance with the
glass door in place. (If the glass is left
off the unit while operating hot combus-
tion gas may enter the room)

12
107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
TO TURN OFF GAS
TO APPLIANCE
1. Turn off the wall switch.
2. Turn off all electric power to the ap-
pliance if service is to be performed.
3. Remove the glass door.
4. Open control access panel.
5. Turn equipment shutoff valve clock-
wise
Clockwise
to“OFF”. Donot force.
6. Close control access panel.
7. Replace the glass door.
Figure 28 - Pilot
OPTIONAL REMOTE
OPERATION
Note: The WRC receiver and hand-held
remotecontrolkitmustbepurchasedsepa-
rately (see Accessories, page 17). Follow
installation instructions on page 8.
1. Turn equipment shutoff valve to ON
position. You can now turn the
burneron andoff withthe hand-held
remote control unit.
IMPORTANT: Be sure to press the
ON/OFF buttons on the hand-held
remote control unit for up to 3 sec-
onds to assure proper operation.
2. PresstheON/OFF buttonto turnthe
burner on and off.
OPERATING
FIREPLACE
FOR YOUR SAFETY
READ BEFORE
LIGHTING
WARNING: If you do not fol-
low these instructions exactly, a
fireorexplosionmayresultcaus-
ing property damage, personal
injury or loss of life.
A. This appliance is equipped with an
ignition device which automatically
lightsthe pilot. Donot try to lightthe
pilot by hand.
B. BEFORE LIGHTING smell all
aroundtheappliance areaforgas. Be
suretosmell nextto thefloor because
some gas is heavier than air and will
settle on the floor.
WHAT TO DO IF YOU SMELL
GAS
• Do not try to light any appliance.
• Do not touch any electric switch.
• Do not use any phone in your
building.
• Immediatelycall yourgassupplier
from a neighbor’s phone. Follow
the gas supplier’s instructions.
• If you cannot reach your gas sup-
plier, call the fire department.
C. Do not use this appliance if any part
has been under water. Immediately
call a qualified service technician to
inspect the appliance and to replace
any part of the control system and
any gas control which has been un-
der water.
LIGHTING
INSTRUCTIONS
1. STOP! Read the safety information,
column 1.
2. Turn off all electric power to the
appliance.
3. Turnwall switchtothe OFFposition.
4. Remove the glass door.
5. Open control access panel.
6. Turn the equipment shutoff valve
clockwise
Clockwise
to the OFF posi-
tion (see Figure 27). Do not force.
7. Wait five (5) minutes to clear out any
gas. Then smell for gas, including
near the floor. Ifyousmellgas,STOP!
Follow “B” in the safety information,
column 1. If you don’t smell gas, go to
the next step.
8. Turn the equipment shutoff valve
counterclockwise
C-clockwise
to the ON
position. Do not force.
9. Close control access panel.
10. Replace the glass door.
11. Turn on all electric power to the ap-
pliance.
12. Turn the wall switch to the ON posi-
tion.
13. Visually locate the pilot.The ignitor
should begin to spark and the main
burner should ignite once flame ap-
pears at pilot.
• If lighting the appliance for the
first time each season, it may take
several attempts before the supply
gas can reach the pilot and main
burners.
• If the appliance will not stay lit af-
ter several attempts, follow the in-
structions To Turn Off Gas To Ap-
pliance, column 3, and call your
service technician or gas supplier.
Figure27-TurningtheEquipmentShutoff
Valve to the OFF position
Equipment Shutoff Valve
Control Valve
Pilot
Assembly Ignitor/Sensor

13
107050
OWNER’S MANUAL
OPERATING
GUIDELINES AND
MAINTENANCE
INSTRUCTIONS
WARNING: The logs can be
hot. Handle only when cool.
PILOT ASSEMBLY
ADJUSTMENT
Turn the adjustment screw marked pilot
clockwise to decrease or counterclockwise
to increase the flame to proper size (see
Figure 29).
Do not remove the adjustment screw.
BURNER FLAME
ADJUSTMENT
Figure 29 - Correct Pilot Flame Pattern
Themainburnerflameshouldbeablueflame
somewhere between a long blue flame and a
short, sharp flame that tends to blow off the
ports. If flameis short,very sharpor blowing,
theburnerairshuttershouldbeclosedenough
to obtain a long blue flame (see Figure 30).
Long yellow flame produce excess carbon
monoxide and could cause sooting.
TO SHUT OFF
1. For temporary shutoff, turn off electri-
cal power to unit either by wall switch
or remote control.
2. For long term shutoff, depress the gas
valvecock valve, locatedunder thefire-
box,turnclockwise totheOFF position.
Figure 30 - Burner Flame Patterns
CORRECT
INCORRECT
CLOSE
SHUTTER
INCORRECT
OPEN
SHUTTER
Short, Sharp,
Blowing Flame
Long, Blue Flame
with Yellow Tips
Long, Uneven,
Yellow Flame
3/8" Min. Thermopile
Pilot Burner
1. Upon completing your gasline connec-
tion, a small amount of air will be in
the lines. When first lighting the appli-
ance it will take the appliance a few
minutes to purge the air. Once purging
is complete, the pilot and burner will
light and operate as indicated in the
instruction manual. Subsequent light-
ing of the appliance will not require
such purging.
1. When lit for the first time, the appli-
ance will emit a slight odor for an hour
or two. This is due to the “curing” of
thelogs and“burn-in” ofinternal paints
and lubricants used in the manufactur-
ing process.
2. Keep control compartment, logs burn-
ers, and area surrounding the logs
clean by vacuuming or brushing at
least twice a year. Do not vacuum the
mineral wool located in the front of
the burner assembly.
3. Always turn off gas to pilot before
cleaning. For example relighting, refer
to the lighting instructions.
4. Aqualifiedfieldservicetechnicianshould
inspecttheapplianceandventingsystem
before use or at least annually.
5. Always keep the appliance area clear
and free from combustible materials,
gasoline and other flammable vapors
and liquids.
6. Never obstruct the flow of combustion
and ventilation air. Keep the front of
the appliance clear of all obstacles and
materials.
7. Never leave children unattended when
the appliance is operating.
WARNING: Turn off gas and
electricalpowerbeforeservicing
appliance.Itisrecommendedthat
a qualified serviceman perform
these checkups at the beginning
of each heating season.
In order to properly clean the burner and
pilotassemblyremovethelogsexposingthe
burner and pilot assembly.
CLEANING BURNER AND
PILOT
Clean all foreign materials from the top of
burnerandfrombottompanelbelow.Check
to make sure that burner orifice is clean.
Visually inspect pilot. Brush or blow away
any dust and lint accumulations. If pilot
orifice is plugged, disassembly maybe re-
quiredtoremoveanyforeignmaterialsfrom
orificeand/ortubing.Whenapplianceisput
back in service, check pilot flame patterns
(see Figure 29).
MAINTENANCE

14
107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
TECHNICAL
SERVICE
You may have further questions about in-
stallation, operation, or troubleshooting.
If so, contact DESA International’s Techni-
cal Service Department at 1-800-323-5190.
You can also visit DESA International’s
technical services web site at
www.desatech.com.
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burner will have delayed ignition
• fireplace will not produce specified heat
• propane/LP gas supply may be low
When Gas Quality Is Bad
• pilot will not stay lit
• burner will produce flames and soot
• fireplace will backfire when lit
Youmayfeelyourgaspressureistoolowor
gas quality is bad. If so, contact your local
propane/LP gas supplier.
WIRING DIAGRAM
Control
Valve
Pilot
Robertshaw
MODEL SP745 IGNITION CONTROL
STEP DOWN
TRANSFORMER
PV GND
PV/MV
TR MV
TH
HEAT
LIMIT
SWITCH
IGN
EV2
SUPPLY
INCOMING
MAIN GAS
EV1
TO
GAS LINE
BURNER
24V AC
120V AC
120V AC
INCOMING
OR BREAKER)
(FUSE BOX
OFF
ON
(SUPPLIED)
WALL SWITCH
GREEN BLACK WHITE
120v, 60Hz, 0.7A
ELECTRICAL RATING:
BLACK
WHITE
GREEN
OPTIONAL
REMOTE
CONTROL
Ignitor
Hearth Pan
Connectors
(Not Supplied)
Field Wire

15
107050
OWNER’S MANUAL
TROUBLESHOOTING The two most common causes of a malfunctioning gas appliance are:
1. Loose wiring connections
2. Construction debris clogging the pilot and/or gas control valve filter
OBSERVED PROBLEM
Ignitor will not spark or pilot will not light
Pilot lights but will not stay lit
Nogastomainburner,althoughwallswitch
and valve are set to the ON position
Frequent main burner outage
POSSIBLE CAUSE
1. No gas supply, or equipment shutoff
valve is OFF
2. Air in gas line
3. Construction debris cloggingpilot orifice
4. Low gas pressure
5. Kinked pilot line
6. Control valve knob is not opening
7. No power to unit or the ignition module
or power transformer is bad
1. Loose wiring on ignitor wire to ignition
module and/or poor ground to ignition
module
2. Pilot flame too low to sense
1. Wall switch wires defective or too long
2. Sensor, valve, or ignition module is not
operating
1. Pilot flame may be too low, causing
safety pilot to “drop out”
2. Vent may be blocked or restricted
REMEDY
1. Check to see if you have gas supply and
that the equipment shutoff valve is
opened
2. Repeat lighting procedure several times
to purge all air out of lines. If after re-
peated attempts appliance does not light
call for qualified service and repair
3. Remove debris and dirt, inspect and
clean any other possible obstructions
4. Contact your gas supplier to check pres-
sure
5. Have a qualified technician replace pi-
lot line
6. Replace control valve (Refer to Replace-
ment Parts, page 17)
7. Check that main power is on and that all
wire connections are made correctly to
theignition model (see WiringDiagram,
page 14). Check for 24 VAC at the sec-
ondarysideof thetransformer. If24VAC
is present and the module does not op-
erate, have the module replaced other-
wise have the transformer replaced
1. Check ignitor wire connection. Refer to
wiring diagram (see Wiring Diagram,
page 14) and/or check ground wire to
ignition module
2. Clean and adjust pilot burner and check
gas supply and inlet pressure to unit
Note: Have a qualified technician replace
pilot assembly if broken or corroded
1. Check electrical connections
2. Recheck problems 1 and 2
1. Clean and adjust pilot flame for maximum
flame impingement on sensor
2. Have vent inspected for blockage or
damage
Note: For additional help, visit DESA
International’s technical service web
site at www.desatech.com.
www.desatech.com
Note: Before troubleshooting the system,
makesuretheequipmentshutoffvalveisON.
Continued

16
107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
TROUBLESHOOTING
Continued
WARNING: 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.
• Immediatelycallyourgassupplierfromaneighbor’sphone.Followthe
gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
IMPORTANT: Operatingfireplacewhereimpuritiesinairexistmaycreateodors.Cleaning
supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles,
etc., create fumes. These fumes may mix with combustion air and create odors.
POSSIBLE CAUSE
1. Metal expanding while heating or con-
tracting while cooling
1. Fireplace burning vaporsfrom paint,hair
spray, glues, etc. (See IMPORTANT
statement above)
2. Gas leak. SeeWarning statement at
top of page
1. Gas leak. SeeWarning statement at
top of page
2. Control valve defective
1. Foreign matter between control valve
and burner
2. Gas leak. SeeWarning statement at
top of page
1. Improper log placement
2. Air holes at burner inlet blocked
3. Burner flame holes blocked
OBSERVED PROBLEM
Fireplace produces a clicking/ticking noise
just after burner is lit or shut off
Fireplace produces unwanted odors
Gas odor even when control knob is in OFF
position
Gas odor during combustion
Dark residue on logs or inside of fireplace
REMEDY
1. This is common with most fireplaces. If
noise is excessive, contact qualified ser-
vice person
1. Ventilate room. Stop using odor caus-
ing products while fireplace is running
2. Locate and correct all leaks (see Gas
Line Hook-Up, page 9)
1. Locate and correct all leaks (see Gas
Line Hook-Up, page 9)
2. Replace control valve
1. Take apart gas tubing and remove for-
eign matter
2. Locate and correct all leaks (see Gas
Line Hook-Up, page 9)
1. Properly locate logs (see Log & Ember
Placement, page 10)
2. Clean out air holes at burner inlets. Pe-
riodically repeat as needed
3. Remove blockage or replace burner
www.desatech.com

17
107050
OWNER’S MANUAL
ACCESSORIES
RECEIVER AND HAND-HELD
REMOTE CONTROL KIT
00710 (WRC)
For all models. Allows the gas log heater to
be turned on and off by using a hand-held
remote control.
LOG SET - 14586 (105855-01)
Top Left Log - 105856-01
Top Right Log - 105857-01
Bottom Rear Log - 105858-01
Bottom Front Log - 105859-01
AIR KIT - 90325 (AKGL)
Optional kit helps offset the negative pres-
sure often existing in today's tightly con-
structed homes.
ORIFICE
Natural - 23099 (105862-01)
REFRACTORY PIECES
Back - 20938 (105864-01)
Left/Right Side - 20939 (105865-01)
Bottom - 20937 (105866-01)
BURNER ASSEMBLY
27109 (107223-01)
Rear Log Front Log
Left Log
Piece
Right Log Piece
Receiver Transmitter
Note: Use only original replacement parts.
Thiswillprotect yourwarrantycoveragefor
parts replaced under warranty.
PARTS UNDER WARRANTY
Contactauthorizeddealersofthisproduct.If
theycan’tsupplyoriginalreplacementpart(s)
call DESA International’s Technical Ser-
vice Department at 1-800-323-5190 for re-
ferral information.
When calling DESA International, have
ready
• your name
• your address
• model and serial numbers of your fire-
place
• how fireplace was malfunctioning
• type of gas used (propane/LP or natural
gas)
• purchase date
Usually,we willask youto returnthe defec-
tive part to the factory.
PARTS NOT UNDER
WARRANTY
Contactauthorizeddealersofthisproduct.If
theycan’tsupplyoriginalreplacementpart(s)
callDESAInternational’sPartsDepartment
at 1-800-972-7879 for referral information.
When calling DESA International, have
ready
• model number of your fireplace
• the replacement part number
REPLACEMENT
PARTS

18
107050
VENTED TYPE DECORATIVE APPLIANCE
EVGL850N
®
REPLACEMENT
PARTS
Continued
HEAT LIMIT SWITCH
14519 (105911-01)
Shouldthelimitswitchneedreplacing,have
a qualified technician replace it (see Wiring
Diagram, page 14). The limit switch is
locatedunder thetop doortrack onthe right
hand side.
FIXED GLASS DOORS
01605 (105863-01)
IGNITION MODULE
14301 (107221-01)
TRANSFORMER
14129 (107222-01)
PILOT ASSEMBLY
Natural (Electronic) - 27197
(107220-01)
If in need of replacing, have a qualified
technician replace it.
GAS CONTROL VALVE
Natural - 14569 (107219-01)
If in need of replacing, have a qualified
technician replace it.
WALL SWITCH
22180 (105742-01)
Wall switch, cover plate, and wires are
supplied with the appliance. If wires need
replacing, use proper gauge.
Millivolt
Wires
Wall Switch
and Cover
Plate

19
107050
OWNER’S MANUAL
NOTES
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_______________________________________________________________________________________________

LIMITED WARRANTY
B-VENT FIREPLACE
DESAInternationalwarrantsthisproducttobefreefromdefectsinmaterialsandcomponentsforfour(4)yearsfromthedateoffirstpurchase,
providedthattheproducthasbeenproperlyinstalled,operatedandmaintainedinaccordancewithallapplicableinstructions.Tomakeaclaim
under this warranty the Bill of Sale or cancelled check must be presented.
Thiswarrantyisextendedonlytotheoriginalretailpurchaser.Thiswarrantycoversthecostofpart(s)requiredtorestorethisheatertoproper
operating condition and an allowance for labor when provided by a DESA Authorized Service Center. Warranty part(s) MUST be obtained
through authorized dealers of this product and/or DESA International who will provide original factory replacement parts. Failure to use
originalfactoryreplacementpartsvoidsthiswarranty.TheheaterMUSTbeinstalledbyaqualifiedinstallerinaccordancewithalllocalcodes
and instructions furnished with the unit.
Thiswarranty does notapply to partsthatare notinoriginal condition becauseof normal wearand tear, orpartsthat fail orbecome damaged
as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel, diagnostic cost, labor,
transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner.
TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT;
THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION
OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE TO FOUR (4) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE; AND DESA
INTERNATIONAL’S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA INTERNA-
TIONAL SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential
damages, so the above limitation on implied warranties, or exclusion or limitation on damages may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
For information about this warranty write:
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
INTERNATIONAL
KEEP THIS WARRANTY
WARRANTY INFORMATION
Model
Serial No.
Date Purchased
Always specify model and serial numbers when communicating with the factory.
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written
warranty. We make no other warranty, expressed or implied.
107050-01
Rev. A
02/00
NOT A UPC
107050 01