Desa VGL18PRA Quick start guide

Save this manual for future reference.

For more information, visit www.desatech.com

WARNING: If the information in this manual is not fol-

lowed exactly, a ﬁre or explosion may result causing

property damage, personal injury, or loss of life.

— Do not store or use gasoline or other ﬂammable

vapors and 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.

• If you cannot reach your gas supplier, call the ﬁre

department.

— Installation and service must be performed by a quali-

ﬁed installer, service agency, or the gas supplier.

UNVENTED (VENT-FREE) GAS LOG HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Also Design-Certiﬁed As Vented Decorative Appliances When

Not Used With Hand-Held Thermostat Remote

MODELS

VGL18NRA, VGL18PRA

VGL24NRA, VGL24PRA

VGL30NRA, VGL30PRA

www.desatech.com 112882-01B

WARNING: Improper installation, adjustment, altera-

tion, service, or maintenance can cause injury or prop-

erty damage. Refer to this manual for correct installation

and operational procedures. For assistance or addi-

tional information consult a qualiﬁed installer, service

agency, or the gas supplier.

WARNING: This appliance is for installation only in

a solid-fuel burning masonry or UL127 factory-built

ﬁreplace, or in a listed ventless ﬁrebox enclosure. It is

design-certiﬁed for these installations in accordance

with ANSI Z21.11.2. Exception: Do not install this appli-

ance in a factory-built ﬁreplace that includes instructions

stating it has not been tested or should not be used with

unvented gas logs.

WARNING: This is an unvented gas-ﬁred heater. It uses

air (oxygen) from the room in which it is installed. Provi-

sions for adequate combustion and ventilation air must

be provided. Refer to Air for Combustion and Ventilation

section on page 6 of this manual.

This appliance may be installed in an aftermarket,* per-

manently located, manufactured (mobile) home, where

not prohibited by local codes.

This appliance is only for use with the type of gas indi-

cated on the rating plate. This appliance is not convert-

ible for use with other gases.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer

TABLE OF CONTENTS

Safety Information ............................................... 3

Product Identiﬁcation ........................................... 5

Local Codes ........................................................ 5

Unpacking ........................................................... 5

Product Features ................................................. 5

Remote Control Accessories ............................... 5

Air For Combustion and Ventilation ..................... 6

Installation ........................................................... 8

Operating heater ............................................... 19

Inspecting Burners ............................................ 22

Cleaning and Maintenance ................................ 23

Troubleshooting ................................................. 24

Wiring Diagram .................................................. 28

Service Hints ..................................................... 28

Technical Service .............................................. 28

Replacement Parts ............................................ 28

Speciﬁcations .................................................... 28

Accessories ....................................................... 29

Illustrated Parts Breakdown and Parts List ....... 30

Warranty Information ...........................Back Cover

www.desatech.com

112882-01B 3

SAFETY INFORMATION

WARNING: This product con-

tains and/or generates chemicals

known to the State of California

to cause cancer or birth defects,

or other reproductive harm.

IMPORTANT: Read this owner’s

manual carefully and completely

before trying to assemble, op-

erate, or service this heater.

Improper use of this heater can

cause serious injury or death

from burns, fire, explosion,

electrical shock, and carbon

monoxide poisoning.

DANGER: Carbon monoxide

poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon

monoxide poisoning resemble the ﬂu, with head-

aches, dizziness, or nausea. If you have these signs,

the heater may not be working properly. Get fresh

air at once! Have heater serviced. Some people

are more affected by carbon monoxide than others.

These include pregnant women, people with heart

or lung disease or anemia, those under the inﬂuence

of alcohol, and those at high altitudes.

Natural and Propane/LP Gas: Natural and pro-

pane/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 warn-

ings. Keep this manual for reference. It is your

guide to safe and proper operation of this heater.

WARNING: Any change to

this heater or its controls can

be dangerous.

WARNING: Do not allow fans

to blow directly into the ﬁreplace.

Avoid any drafts that alter burner

ﬂame patterns. Ceiling fans can

create drafts that alter burner

ﬂame patterns. Altered burner

patterns can cause sooting.

WARNING: Do not use a blow-

er insert, heat exchanger insert,

or other accessory not approved

for use with this heater.

Due to high temperatures, the

appliance should be located out

of trafﬁc and away from furniture

and draperies.

Do not place clothing or other

ﬂammable material on or near

the appliance. Never place any

objects on the heater.

Heater base assembly becomes

very hot when running heater.

Keep children and adults away

from hot surface to avoid burns

or clothing ignition. Heater

will remain hot for a time after

shutdown. Allow surface to cool

before touching.

Carefully supervise young chil-

dren when they are in the room

with heater. When using the hand-

held remote accessory, keep se-

lector switch in the OFF position

to prevent children from turning

on burners with remote.

Keep the appliance area clear

and free from combustible ma-

terials, gasoline, and other ﬂam-

mable vapors and liquids.

www.desatech.com 112882-01B

SAFETY INFORMATION

Continued

1. This appliance is only for use with the type of

gas indicated on the rating plate. This appliance

is not convertible for use with other gases.

2. Do not place propane/LP supply tank(s) in-

side any structure. Locate propane/LP supply

tank(s) outdoors (propane/LP units only).

3. To prevent performance problems, the use of

a propane/LP fuel tank of less than 100 lb.

capacity is not recommended (propane/LP

units only).

4. If you smell gas

• shut off gas supply

• do not try to light any appliance

• do not touch any electrical switch; do not use

any phone in your building

• immediately call your gas supplier from a

neighborʼs phone. Follow the gas supplierʼs

instructions

• if you cannot reach your gas supplier, call

the ﬁre department

5. This heater shall not be installed in a bedroom

or bathroom unless installed as a vented appli-

ance (see Installing Damper Clamp Accessory

for Vented Operation, page 12).

6. Before installing in a solid fuel burning ﬁre-

place, the chimney ﬂue and ﬁrebox must be

cleaned of soot, creosote, ashes, and loose paint

by a qualiﬁed chimney cleaner. Creosote will

ignite if highly heated. A dirty chimney ﬂue

may create and distribute soot within the house.

Inspect chimney ﬂue for damage. If damaged,

repair ﬂue before operating heater.

7. Do not burn solid-fuel in a masonry or UL127

factory-built ﬁreplace in which a vent-free

room heater is installed.

8. If ﬁreplace has glass doors, never operate this

heater with glass doors closed. If you operate

heater with doors closed, heat buildup inside

ﬁreplace will cause glass to burst. Make sure

there are no obstructions across openings of

ﬁreplace.

9. This log heater is designed to be smokeless. If

logs ever appear to smoke, turn off heater and

call a qualiﬁed service person. Note: During

initial operation, slight smoking may occur due

to log curing and heater burning manufacturing

residues.

10. To prevent the creation of soot, follow the

instructions in Cleaning and Maintenance,

page 23.

11. Before using furniture polish, wax, carpet

cleaner, or similar products, turn heater off.

If heated, the vapors from these products may

create a white powder residue within burner

box or on adjacent walls or furniture.

12. This heater needs fresh, outside air ventilation

to run properly. This heater has an Oxygen De-

pletion Sensing (ODS) safety shutoff system.

The ODS shuts down the heater if not enough

fresh air is available. See Air for Combustion

and Ventilation, page 6. If heater keeps shutting

off, see Troubleshooting, page 24.

13. Do not run heater

• where ﬂammable liquids or vapors are used

or stored

• under dusty conditions

14. Do not use this heater to cook food or burn

paper or other objects.

15. Do not use heater if any part has been exposed

to or under water. Immediately call a qualiﬁed

service technician to inspect the room heater

and to replace any part of the control system

and any gas control which has been under

water.

16. Do not operate heater if any log is broken. Do

not operate heater if a log is chipped (dime-

sized or larger).

17. Turn heater off and let cool before servicing,

installing, or repairing. Make sure the remote

selector switch is in the OFF position. Only a

qualiﬁed service person should install, service,

or repair heater.

18. Make sure the remote selector switch is in the

OFF position when you are away from home

for long periods of time.

19. This heater must not be connected to any

external electrical source.

20. Operating heater above elevations of 4,500

feet may cause pilot outage.

21. Provide adequate clearances around air

openings.

www.desatech.com

112882-01B 5

PRODUCT IDENTIFICATION

Figure 1 - Vent-Free Gas Log Heater

Optional Remote

Control

LOCAL CODES

Install and use heater with care. Follow all local

codes. In the absence of local codes, use the lat-

est edition of The National Fuel Gas Code, ANSI

Z223/NFPA 54*.

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

Note: Where listed vented decorative logs are

required, thermostat operation is not permitted.

UNPACKING

CAUTION: Do not remove the

data plates attached to the heater

base assembly. The data plates

contain important warranty and

safety information.

1. Remove logs and heater base assembly from

carton. Note: Do not pick up heater base as-

sembly by back burner. This could damage

heater.

2. Remove all protective packaging applied to

logs and heater for shipment.

3. Check all items for any shipping damage. If

damaged, promptly inform dealer where you

bought heater.

PRODUCT FEATURES

OPERATION

This heater is clean burning. It requires no outside

venting. There is no heat loss out a vent or up a

chimney. Heat is generated by realistic dancing,

yellow ﬂames. This heater is designed for vent-

free operation with ﬂue damper closed. It has been

tested and approved to ANSI Z21.11.2 standard

for unvented heaters. This heater may also be

operated as a vented decorative (ANSI Z21.60)

product by opening ﬂue damper (non-thermostat

models only).

SAFETY PILOT

This heater has a pilot with an Oxygen Deple-

tion Sensing (ODS) safety shutoff system. The

ODS/pilot is a required feature for vent-free room

heaters. The ODS/pilot shuts off the heater if there

is not enough fresh air.

ELECTRONIC IGNITION SYSTEM

This heater has an electronic ignitor. This system

requires no matches or other sources to light

heater.

REMOTE CONTROL

ACCESSORIES

There are two optional remote controls that can be

purchased separately for this log heater:

• hand-held ON/OFF remote

• hand-held thermostat remote

See Accessories, page 29.

Electronic

Ignitor Button

Ember Bed Burner

Flame Adjustment

Knob Control Knob

Left Bottom Log

Left Top Log

Rear Log

Right Crossover Log

Right Top Log

Right

Bottom Log

Remote Sensor

with Switch

www.desatech.com 112882-01B

AIR FOR COMBUSTION

AND VENTILATION

WARNING: This heater shall

not be installed in a conﬁned

space or unusually tight con-

struction unless provisions are

provided for adequate combus-

tion and ventilation air. Read the

following instructions to insure

proper fresh air for this and

other fuel-burning appliances

in your home.

Todayʼs homes are built more energy efﬁcient

than ever. New materials, increased insulation, and

new construction methods help reduce heat loss

in homes. Home owners weather strip and caulk

around windows and doors to keep the cold air out

and the warm air in. During heating months, home

owners want their homes as airtight as possible.

While it is good to make your home energy efﬁ-

cient, your home needs to breathe. Fresh air must

enter your home. All fuel-burning appliances need

fresh air for proper combustion and ventilation.

Exhaust fans, ﬁreplaces, clothes dryers, and fuel

burning appliances draw air from the house to

operate. You must provide adequate fresh air for

these appliances. This will insure proper venting

of vented fuel-burning appliances.

PROVIDING ADEQUATE

VENTILATION

The following are excerpts from National Fuel

Gas Code, ANSI Z223.1/NFPA 54, Section 5.3,

Air for Combustion and Ventilation.

All spaces in homes fall into one of the three fol-

lowing ventilation classiﬁcations:

1. Unusually Tight Construction

2. Unconﬁned Space

3. Conﬁned Space

The information on pages 6 through 8 will help

you classify your space and provide adequate

ventilation.

Unusually Tight Construction

The air that leaks around doors and windows

may provide enough fresh air for combustion and

ventilation. However, in buildings of unusually

tight construction, you must provide additional

fresh air.

Unusually tight construction is deﬁned as

construction where:

a. walls and ceilings exposed to the out-

side atmosphere have a continuous

water vapor retarder with a rating of one

perm (6 x 10-11 kg per pa-sec-m2) or less

with openings gasketed or sealed and

b. weather stripping has been added on

openable windows and doors and

c. caulking or sealants are applied to

areas such as joints around window

and door frames, between sole plates

and ﬂoors, between wall-ceiling joints,

between wall panels, at penetrations

for plumbing, electrical, and gas lines,

and at other openings.

If your home meets all of the three criteria

above, you must provide additional fresh

air. See Ventilation Air From Outdoors,

page 8.

If your home does not meet all of the three

criteria above, proceed to Determining

Fresh-Air Flow For Heater Location.

Conﬁned Space and Unconﬁned Space

The National Fuel Gas Code, ANSI Z223.1/NFPA

54 deﬁnes a conﬁned space as a space whose

volume is less than 50 cubic feet per 1,000 Btu

per hour (4.8 m3 per kw) of the aggregate input

rating of all appliances installed in that space and

an unconﬁned space as a space whose volume is

not less than 50 cubic feet per 1,000 Btu per hour

(4.8 m3 per kw) of the aggregate input rating of

all appliances installed in that space. Rooms com-

municating directly with the space in which the

appliances are installed*, through openings not

furnished with doors, are considered a part of the

unconﬁned space.

* Adjoining rooms are communicating only if

there are doorless passageways or ventilation grills

between them.

DETERMINING FRESH-AIR FLOW

FOR FIREPLACE LOCATION

Determining if You Have a Conﬁned or

Unconﬁned Space

Use this work sheet to determine if you have a

conﬁned or unconﬁned space.

Space: Includes the room in which you will install

ﬁreplace plus any adjoining rooms with doorless pas-

sageways 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)

www.desatech.com

112882-01B 7

Example: Space size 20 ft. (length) x 16 ft.

(width) x 8 ft. (ceiling height) = 2,560 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: 2,560 cu. ft. (volume of space) x 20 =

51,200 (maximum Btu/Hr the space can support)

3. Add the Btu/Hr of all fuel burning appliances in

the space.

Vent-free ﬁreplace __________ Btu/Hr

Gas water heater* __________ Btu/Hr

Gas furnace __________ Btu/Hr

Vented gas heater __________ Btu/Hr

Gas ﬁreplace logs __________ Btu/Hr

Other gas appliances* + ________ Btu/Hr

Total = ________ Btu/Hr

* Do not include direct-vent gas appliances. Di-

rect-vent draws combustion air from the outdoors

and vents to the outdoors.

Example:

Gas water heater __________ Btu/Hr

Vent-free ﬁreplace + ________ Btu/Hr

Total = ________ Btu/Hr

4. Compare the maximum Btu/Hr the space can

support with the actual amount of Btu/Hr used.

_________

Btu/Hr (maximum the space can support)

_________

Btu/Hr (actual amount of Btu/Hr used)

Example: 51,200 Btu/Hr (maximum the space

can support)

79,000 Btu/Hr (actual amount of

Btu/Hr used)

The space in the example is a conﬁned space because

the actual Btu/Hr used is more than the maximum

Btu/Hr the space can support. You must provide ad-

ditional fresh air. Your options are as follows:

A. Rework worksheet, adding the space of an adjoin-

ing room. If the extra space provides an unconﬁned

space, remove door to adjoining room or add

ventilation grills between rooms. See Ventilation

Air From Inside Building.

B. Vent room directly to the outdoors. See Ventila-

tion Air From Outdoors, page 8.

C. Install a lower Btu/Hr ﬁreplace, if lower Btu/Hr

size makes room unconﬁned.

40,000

39,000

79,000

If the actual Btu/Hr used is less than the maximum

Btu/Hr the space can support, the space is an un-

conﬁned space. You will need no additional fresh

air ventilation.

WARNING: If the area in

which the heater may be oper-

ated is smaller than that deﬁned

as an unconﬁned space or if the

building is of unusually tight

construction, provide adequate

combustion and ventilation air

by one of the methods described

in the National Fuel Gas Code,

ANSI Z223.1/NFPA 54 Section 5.3

or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining un-

conﬁned space. When ventilating to an adjoining

unconﬁned space, you must provide two perma-

nent openings: one within 12" of the ceiling and

one within 12" of the ﬂoor on the wall connecting

the two spaces (see options 1 and 2, Figure 2). You

can also remove door into adjoining room (see

option 3, Figure 2). Follow the National Fuel Gas

Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for

Combustion and Ventilation for required size of

ventilation grills or ducts.

AIR FOR COMBUSTION

AND VENTILATIOIN

Continued

Figure 2 - Ventilation Air from Inside

Building

Remove

Door into

Adjoining

Room,

Option

Ventilation Grills

Into Adjoining Room,

Option 2

Ventilation

Grills

Into Adjoining

Room,

Option 1

12"

www.desatech.com 112882-01B

Figure 3 - Ventilation Air from Outdoors

Outlet

Air

Ventilated

Attic

Outlet

Air

Inlet

Air

Inlet Air Ventilated

Crawl Space

Crawl

Space

To Attic

AIR FOR COMBUSTION

AND VENTILATIOIN

Continued

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or

ducts. You must provide two permanent openings:

one within 12" of the ceiling and one within 12"

of the ﬂoor. Connect these items directly to the

outdoors or spaces open to the outdoors. These

spaces include attics and crawl spaces. Follow the

National Fuel Gas Code, ANSI Z223.1/NFPA 54,

Section 5.3, Air for Combustion and Ventilation for

required size of ventilation grills or ducts.

IMPORTANT: Do not provide openings for inlet

or outlet air into attic if attic has a thermostat-

controlled power vent. Heated air entering the attic

will activate the power vent.

INSTALLATION

NOTICE: This heater is intended

for use as supplemental heat.

Use this heater along with your

primary heating system. Do not

install this heater as your pri-

mary heat source. If you have a

central heating system, you may

run system’s circulating blower

while using heater. This will help

circulate the heat throughout the

house. In the event of a power

outage, you can use this heater

as your primary heat source.

NOTICE: State or local codes may

only allow operation of this appli-

ance in a vented conﬁguration.

Check your state or local codes.

WARNING: A qualiﬁed ser-

vice person must install heater.

Follow all local codes.

WARNING: If optional hand-

held remote accessory has been

installed, make sure the selector

switch is in the OFF position

before installing heater.

WARNING: Before installing

in a solid fuel burning ﬁreplace,

the chimney ﬂue and ﬁrebox

must be cleaned of soot, creo-

sote, ashes, and loose paint by a

qualiﬁed chimney cleaner. Creo-

sote will ignite if highly heated.

A dirty chimney ﬂue may create

and distribute soot within the

house. Inspect chimney ﬂue for

damage. If damaged, repair ﬂue

before operating heater.

WARNING: Seal any fresh

air vents or ash clean-out doors

located on ﬂoor or wall of ﬁre-

place. If not, drafting may cause

pilot outage or sooting. Use a

heat-resistant sealant. Do not

seal chimney ﬂue damper.

WARNING: Never install the

heater

• in a bedroom or bathroom

unless installed as a vented

appliance, see page 10.

• in a recreational vehicle

• where curtains, furniture,

clothing, or other ﬂammable

objects are less than 42 inches

from the front, top, or sides of

the heater

• in high trafﬁc areas

• in windy or drafty areas

www.desatech.com

112882-01B 9

CAUTION: This heater cre-

ates warm air currents. These

currents move heat to wall sur-

faces next to heater. Installing

heater next to vinyl or cloth wall

coverings or operating heater

where impurities (such as, but

not limited to, tobacco smoke,

aromatic candles, cleaning ﬂu-

ids, oil or kerosene lamps, etc.) in

the air exist, may discolor walls

or cause odors.

IMPORTANT: Vent-free heaters add moisture

to the air. Although this is beneﬁcial, installing

heater in rooms without enough ventilation air may

cause mildew to form from too much moisture.

See Air for Combustion and Ventilation, pages

6 through 8.

CHECK GAS TYPE

Use the correct gas type (natural or propane/LP)

for your unit. If your gas supply is not correct, do

not install heater. Call dealer where you bought

heater for proper type heater.

WARNING: This appliance

is equipped for (natural or pro-

pane/LP) gas. Field conversion

is not permitted.

INSTALLATION AND CLEARANCES

(Vent-Free Operation Only)

WARNING: Maintain the

minimum clearances. If you

can, provide greater clearances

from ﬂoor, ceiling, and adjoin-

ing wall.

INSTALLATION

Continued

Carefully follow the instructions below. This will

ensure safe installation into a masonry, UL127-

listed manufactured ﬁreplace, or listed vent-free

ﬁrebox.

Minimum Clearances for Side Combustible

Material, Side Wall, and Ceiling

A. Clearances from the side of the fireplace

cabinet to any combustible material and wall

should follow diagram in Figure 4.

Example: The face of a mantel, bookshelf,

etc. is made of combustible material and

protrudes 3 1/2" from the wall. This combus-

tible material must be 4" from the side of the

ﬁreplace opening (see Figure 4).

Note: When installing your gas logs into

a manufactured firebox, follow firebox

manufacturerʼs instructions for minimum

clearances to combustible materials.

B. Clearances from the top of the ﬁreplace

opening to the ceiling should not be less

than 42 inches.

LOG SIZING REQUIREMENTS

Minimum Firebox Size

Log Front Rear

Size Height Depth Width Width*

24" 17" 13" 28" 21"

MINIMUM FIREPLACE

CLEARANCE TO

COMBUSTIBLE MATERIALS

Log Size Side Wall Ceiling

24" 16" 42"

*Measured at 13" depth

Figure 4 - Minimum Clearance for Side

Combustible Material, Side Wall, and

Ceiling

*Minimum 16 inches from Side Wall

Example

NOTICE: Manual control heaters

may be used as a vented product.

If so, you must always run heater

with chimney ﬂue damper open.

If running heater with damper

open, noncombustible material

above ﬁreplace opening is not

needed. Go to Installing Damper

Clamp Accessory for Vented

Operation, page 12.

www.desatech.com 112882-01B

Minimum Noncombustible Material

Clearances

If Not Using Mantel

Note: If using a mantel, proceed to If Using

Mantel. If not using a mantel, follow the informa-

tion below.

You must have noncombustible material(s) above the

ﬁreplace opening. Noncombustible materials (such as

slate, marble, tile, etc.) must be at least 1/2 inch thick.

With sheet metal, you must have noncombustible

material behind it. Noncombustible material must

extend at least 8" up (for all models). If noncombus-

tible material is less than 12", you must install the

ﬁreplace hood accessory (24" and 30" models only).

See Figure 5 for minimum clearances.

IMPORTANT: If you cannot meet these minimum

clearances, you must operate heater with chimney

ﬂue damper open. Go to Installing Damper Clamp

Accessory for Vented Operation, page 12.

Heat Resistant

Material

(A)

Noncombustible Requirements

Material for Safe

Distance (A) Installation

12" or more Noncombustible

material okay.

Between 8" and 12" Install ﬁreplace hood

accessory (GA6050,

GA6052, or GA6053,

see Accessories,

page 26).

Less than 8" Noncombustible

material must be

extended to at least

8". See Between 8"

and 12", above. If

you cannot extend

material, you must

operate heater with

ﬂue damper open.

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace

INSTALLATION

Continued

If Using Mantel

You must have noncombustible material(s) above

the ﬁreplace opening. Noncombustible materials

(such as slate, marble, tile, etc.) must be at least

1/2 inch thick. With sheet metal, you must have

noncombustible material behind it. Noncombustible

material must extend at least 8 inches up (for all

models). If noncombustible material is less than

12", you must install the ﬁreplace hood accessory

(24" and 30" models only). Even if noncombustible

material is more than 12", you may need the hood

accessory to deﬂect heat away from your mantel

shelf. See Figure 5 and Figures 6 and 7 on page 11

for minimum clearances.

IMPORTANT: If you cannot meet these minimum

clearances, you must operate heater with chimney

ﬂue damper open. Go to Installing Damper Clamp

Accessory for Vented Operation, page 12.

MANTEL CLEARANCES

In addition to meeting noncombustible material

clearances, you must also meet required clearances

between ﬁreplace opening and mantel shelf. If

you do not meet the clearances listed below, you

will need a hood.

Determining Minimum Mantel Clearances

If you meet minimum clearance between mantel

shelf and top of ﬁreplace opening, a hood is not

required (see Figure 6, page 11).

Determining Minimum Mantel Clearances

When Using a Hood

If minimum clearances in Figure 6, page 11 are not

met, you must have a hood. When using a hood

there are still certain minimum mantel clearances

required. Follow minimum clearances shown in

Figure 7, page 11 when using hood.

NOTICE: Surface temperatures

of adjacent walls and mantels be-

come hot during operation. Walls

and mantels above the ﬁrebox

may become hot to the touch.

If installed properly, these tem-

peratures meet the requirements

of the national product standard.

Follow all minimum clearances

shown in this manual.

This manual suits for next models

Table of contents

Other Desa Gas Heater manuals

Desa

Desa RCP25 User manual

Desa

Desa CBT30NT User manual

Desa

Desa CTB3924PR Quick start guide

Desa

Desa Comfort Glow RFN30TA Quick start guide

Desa

Desa 6000 BTU/HR Quick start guide

Desa

Desa VTN25R Original instructions

Desa

Desa Comfort Glow CGR2P Quick start guide

Desa

Desa R Quick start guide

Desa

Desa LSF20NT Original instructions

Desa

Desa CFS18NRA Quick start guide

Desa

Desa VF-30N-PJD Quick start guide

Desa

Desa CERAMIC PLAQUE User manual

Desa

Desa PROPANE CONSTRUCTION CONVECTION HEATER User manual

Desa

Desa VGC18NR/PR User manual

Desa

Desa CGD3018PT/NT Quick start guide

Desa

Desa CF18PV Operation manual

Desa

Desa CRB3624NR Quick start guide

Desa

Desa RCLP50VA User manual

Desa

Desa VN10A Quick start guide

Desa

Desa NZ100 Original instructions

Desa

Desa VRL24NR Quick start guide

Desa

Desa Firewerks MPF24VNA Quick start guide

Desa

Desa RCLP375B User manual

Desa

Desa REM10PT Quick start guide

Popular Gas Heater manuals by other brands

Superior

Superior BGE18NV Installation and operation instructions

Dru

Dru Room-sealed atmospheric gas-fired heating... user manual

klover

klover TKR 35 user guide

Rothenberger Industrial

Rothenberger Industrial 035984 instruction manual

New Buck Corporation

New Buck Corporation 34 user manual

Hargrove

Hargrove Timberland Glow Operation and installation guide

Kinder

Kinder Cameo BF Installation and maintenance instructions

Qlima

Qlima GH 438 B-2 Directions for use

Gasmate

Gasmate AH100 Series instructions

Medallion

Medallion MBP20TLB OWNER'S OPERATION AND INSTALLATION MANUAL

Clarke

Clarke DEVIL 910SS User instructions

Superior

Superior BGE18NR Operation instructions

Brant Radiant Heaters

Brant Radiant Heaters QTD Series User instruction

L.B. White

L.B. White Therma Grow HW220 Owner's manual and instructions

Sealey

Sealey LP35.V5 instructions

Italkero

Italkero Falo Evo User manual and assembly instructions

Williams

Williams 2509822A owner's manual

Romotop

Romotop Heckla 1301 Installation, operator and maintenance manual