Desa FLAME-MAX VML27NR Specification sheet

For more information, visit www.desatech.com

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





         





— WHAT TO DO IF YOU SMELL GAS

 

• Do not touch any electrical switch; do not use any



 



 



 -









FLAME-MAX®MULTI-SIDED LOG DESIGN

VML27NR AND VML27PR

REMOTE CONTROL READY MODEL

UNVENTED (VENT-FREE) GAS LOG HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL



www.desatech.com 111115-01F2

SAFETY INFORMATION

TABLE OF CONTENTS

Safety Information ............................................... 2

Product Identication........................................... 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

Wiring Diagram.................................................. 24

Specications .................................................... 24

Replacement Parts............................................ 24

Service Hints ..................................................... 24

Technical Service............................................... 24

Troubleshooting................................................. 25

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

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

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

  -

-

teration, service or main-

tenance can cause in-



Refer to this manual for

correct installation and

 

For assistance or addi-

tional information con-

   







is for installation only in a

-

   

-



  

installationsinaccordance

-

tion: Do not install this



  

 







WARNING: This is an

  -

    

from the room in which





and ventilation air must

Air

for Combustion and Ven-

tilation



-

stalled in an aftermarket,*

 

 

-





     

   

   

   







www.desatech.com

111115-01F 3

-



known to the State of California









    -

    

    

    

    -









 Early signs of carbon

monoxide poisoning resemble the u, 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 inuence

of alcohol and those at high altitudes.

    Natural and pro-

pane/LP gases are odorless. An odor-making

agent is added to these gases. 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.

    

this heater or its controls can



WARNING: Do not use a

   

-



SAFETY INFORMATION

Continued WARNING: Do not allow fans







    

   



    







   

    













   

will remain hot for a time after





-

dren when they are in the room

    

hand-held remote accessory,



   

    



    



    



    

-

-



www.desatech.com 111115-01F4

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. If you smell gas

• shut off gas supply

• do not try to light any appliance

• do not touch any electrical switch; do not

use any phone in your building

• immediately call your gas supplier from

a neighbor’s phone. Follow the gas

supplier’s instructions

• if you cannot reach your gas supplier, call

the re department

4. This heater shall not be installed in a bedroom or

bathroom, unless installed as a vented appliance.

See Installing Damper Clamp Accessory for

Vented Operation, page 12.

5. Before installing in a solid fuel burning re-

place, the chimney ue and rebox must be

cleaned of soot, creosote, ashes and loose paint

by a qualied chimney cleaner. Creosote will

ignite if highly heated. Inspect chimney ue

for damage. If damaged, repair ue before

operating heater.

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

factory-built replace in which a vent-free

room heater is installed.

7. If replace has glass doors, never operate this

heater with glass doors closed. If you operate

heater with doors closed, heat buildup inside

replace will cause glass to burst. Make sure

there are no obstructions across openings of

replace.

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

logs ever appear to smoke, turn off heater and

call a qualied service person. Note: During

initial operation, slight smoking could occur

due to log curing and heater burning manu-

facturing residues.

9. To prevent the creation of soot, follow the

instructions in Cleaning and Maintenance,

page 23.

10. 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.

SAFETY INFORMATION

Continued

11. This heater needs fresh, outside air ventilation to

run properly. This heater has an oxygen depletion

sensing (ODS) pilot light safety system. The

ODS shuts down the heater if not enough fresh

air is available. See Air for Combustion and

Ventilation, page 6. If heater keeps shutting off,

see Troubleshooting, page 25.

12. Do not run heater

• where ammable liquids or vapors are

used or stored

• under dusty conditions

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

paper or other objects.

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

to or under water. Immediately call a qualied

service technician to inspect the room heater

and to replace any part of the control system and

any gas control which has been under water.

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

not operate heater if a log is chipped (dime-

sized or larger).

16. Turn heater off and let cool before servicing

or repairing. If using optional remote control

accessories, make sure the selector switch is in

the OFF position. Only a qualied service per-

son should install, service or repair heater.

17. If using optional remote control accessories,

make sure the selector switch is in the OFF

position when you are away from home for

long periods of time.

18. This heater must not be connected to any

external electrical source.

19. To prevent performance problems, do not

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

capacity (propane/LP units only).

20. Operating heater above elevations of 4,500

feet could cause pilot outage.

21. Provide adequate clearances around air openings.

State of Massachusetts: The installa-

tion must be made by a licensed plumber

or gas fitter in the Commonwealth of

Massachusetts.

Sellers of unvented propane or natural

gas-red supplemental room heaters shall

provide to each purchaser a copy of 527

CMR 30 upon sale of the unit.

Vent-free gas products are prohibited for

bedroom and bathroom installation in the

Commonwealth of Massachusetts.

www.desatech.com

111115-01F 5

PRODUCT

IDENTIFICATION

Figure 1 - Product Identication

Control Knob

Log Set

Base

Assembly

Optional

Hand-Held

Remote

Control

Flame Adjustment Knob

Control Cover Log

Piezo

Ignitor

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

Z223.1/NFPA 54*.

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

Note: Where listed vented decorative logs are

required, thermostat operation is not permitted.

UNPACKING

CAUTION: Do not remove the

     -



   



1. Remove logs and heater base assembly from

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

bly by the burner. This could damage heater.

Always handle base assembly by grate.

2. Remove all protective packaging applied to

logs and heater for shipment.

3. Check 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 ames. This heater is designed for vent-free

operation with ue damper closed. It has been

tested and approved to ANSI Z21.11.2 standard

for unvented heaters. State and local codes in some

areas prohibit the use of vent-free heaters. This

heater may also be operated as a vented decorative

product (ANSI Z21.60) by opening ue damper

(non-thermostat operation only).

AppLICATION

These multisided logs are designed to be equally

beautiful when viewed from any angle. They

are designed specically for use in see-through,

peninsula and island fireboxes with multiple

openings. You may also install this log heater in

a standard rebox.

SAFETY pILOT

This heater has a pilot with an Oxygen Deple-

tion Sensing (ODS) safety shutoff system. The

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

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

is not enough fresh air.

pIEzO IGNITION SYSTEM

This heater has a piezo ignitor. This system re-

quires no matches, batteries or other sources to

light heater.

REMOTE CONTROL

ACCESSORIES

There are four optional remote controls that can be

purchased separately for this log heater:

• wall switch

• wall thermostat

• hand-held ON/OFF remote

• hand-held thermostat remote

See Accessories, page 29.

Note: The wall thermostat or hand-held thermostat

may not be used where vented decorative listing

is required.

www.desatech.com 111115-01F6



construction where:

 -

    

      

-112



and

 

and

      

     





    





If your home meets all of the three criteria



See Ventilation Air From Outdoors

If your home does not meet all of the three

    Determining

Fresh-Air Flow For Heater Location



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

54 denes a conned space as a space whose

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

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

rating of all appliances installed in that space and

an unconned space as a space whose volume is

not less than 50 cubic feet per 1,000 Btu 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

unconned space.

* Adjoining rooms are communicating only if

there are doorless passageways or ventilation grills

between them.

DETERMINING FRESH-AIR FLOW

FOR HEATER LOCATION





Use this work sheet to determine if you have a

conned or unconned space.

 Includes the room in which you will install

heater plus any adjoining rooms with doorless 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)

AIR FOR COMBUSTION

AND VENTILATION

WARNING: This heater shall

     

    -



-





     

  



Today’s homes are built more energy efcient

than ever. New materials, increased insulation and

new construction methods help reduce heat loss

in homes. Home owners weather strip and caulk

around windows and doors to keep the cold air out

and the warm air in. During heating months, home

owners want their homes as airtight as possible.

While it is good to make your home energy efcient,

your home needs to breathe. Fresh air must enter

your home. All fuel-burning appliances need fresh

air for proper combustion and ventilation.

Exhaust fans, replaces, clothes dryers and fuel

burning appliances draw air from the house to

operate. You must provide adequate fresh air for

these appliances. This will insure proper venting

of vented fuel-burning appliances.





The following are excerpts from National Fuel

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

Air for Combustion and Ventilation.

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

lowing ventilation classications:

1. Unusually Tight Construction

2. Unconned Space

3. Conned Space

The information on pages 4 through 6 will help

you classify your space and provide adequate

ventilation.



The air that leaks around doors and windows

may provide enough fresh air for combustion and

ventilation. However, in buildings of unusually

tight construction, you must provide additional

fresh air.

www.desatech.com

111115-01F 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 replace __________ Btu/Hr

Gas water heater* __________ Btu/Hr

Gas furnace __________ Btu/Hr

Vented gas heater __________ Btu/Hr

Gas replace logs __________ Btu/Hr

Other gas appliances* + __________ Btu/Hr

Total =__________ Btu/Hr

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

rect-vent draws combustion air from the outdoors

and vents to the outdoors.

Example:

Gas water heater __________ Btu/Hr

Vent-free replace + __________ Btu/Hr

Total =__________ Btu/Hr

4. Compare the maximum Btu/Hr the space can

support with the actual amount of Btu/Hr used.

_________

Btu/Hr (maximum the space can support)

_________

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

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

can support)

73,000 Btu/Hr (actual amount of

Btu/Hr used)

The space in the example is a conned space because

the actual Btu/Hr used is more than the maximum

Btu/Hr the space can support. You must provide 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 unconned

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.

C. Install a lower Btu/Hr replace, if lower Btu/Hr

size makes room unconned.

AIR FOR COMBUSTION

AND VENTILATION

Continued

40,000

33,000

73,000

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

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

ned space. You will need no additional fresh air

ventilation.

WARNING: If the area in

-





    







in the National Fuel Gas Code,

ANSI Z223.1/NFPA54 Section 5.3







This fresh air would come from an adjoining un-

conned space. When ventilating to an adjoining

unconned space, you must provide two permanent

openings: one within 12" of the ceiling and one

within 12" of the oor on the wall connecting the

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

can also remove door into adjoining room (see

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

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

Combustion and Ventilation for required size of

ventilation grills or ducts.

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 111115-01F8

INSTALLATION

NOTICE: This heater is intended

    





     -

















 -





NOTICE:Stateorlocalcodesmay

-

    









cleaned of soot, creosote, ashes

-

    







-





WARNING: Seal any fresh

air vents or ash clean-out doors

-



     

   



WARNING: Never install the

heater

 -

-



• in a recreational vehicle

• where curtains, furniture, cloth-



are less than 42" from the front,



 

• in windy or drafty areas

Figure 3 - 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 oor. Connect these items directly to the

outdoors or spaces open to the outdoors. These

spaces include attics and crawl spaces. Follow the

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

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.

AIR FOR COMBUSTION

AND VENTILATION

Continued

Outlet

Air

Ventilated

Attic

Outlet

Inlet

Air

Inlet Air Ventilated

Crawl Space

Crawl

Space

To Attic

www.desatech.com

111115-01F 9

CAUTION: This heater cre-

    

currents move heat to wall sur-

    

heater next to vinyl or cloth wall

   

 

 

-



the air exist, may discolor walls



IMPORTANT: Vent-free heaters add moisture to

the air. Although this is benecial, installing heater

in rooms without enough ventilation air may cause

mildew to form from too much moisture. See Air

for Combustion and Ventilation, page 6.

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.

   

-

   



INSTALLATION AND CLEARANCES



WARNING: Maintain the







INSTALLATION

Continued



 

    

27" 17" 19" 32"

MINIMUM FIREpLACE CLEARANCE TO



  

27" 16" 42"

Carefully follow the instructions below. This will

ensure safe installation into a masonry, UL127-

listed manufactured replace or listed vent-free

rebox.

Minimum Clearances For Side





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

replace cabinet (see Figure 4).

Note: When installing your gas logs into

a manufactured firebox, follow firebox

manufacturer’s instructions for minimum

clearances to combustible materials.

Clearances from the top of the replace opening

to the ceiling should not be less than 42".

Figure 4 - Minimum Clearance for

Combustible to Wall

*Minimum 16" from Side Wall

Example

NOTICE: Manual control heaters



If so, you must always run heater



    





Installing Damper

Clamp Accessory for Vented

Operation

www.desatech.com 111115-01F10

INSTALLATION

Continued



Clearances



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

both replace openings. Noncombustible materials

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

1/2" thick. With sheet metal, you must have non-

combustible material behind it. Noncombustible

material must extend at least 8" up (for all models).

If noncombustible material is less than 12", you

must install the replace hood accessory. See

Figure 5 at right for minimum clearances.

IMPORTANT: If you cannot meet these minimum

clearances, you must operate heater with chimney

ue damper open. Go to Installing Damper Clamp

Accessory for Vented Operation, page 12.



You must have noncombustible material(s) above

the replace opening. Noncombustible materials

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

1/2" thick. With sheet metal, you must have non-

combustible material behind it. Noncombustible

material must extend at least 8" up (for all models).

If noncombustible material is less than 12", you

must install the replace hood accessory. Even if

noncombustible material is more than 12", you

may need the hood accessory to deect heat away

from your mantel shelf. See Figure 5 and 6 and

Figure 7, page 9, for minimum clearances.

IMPORTANT: If you cannot meet these minimum

clearances, you must operate heater with chimney

ue damper open. Go to Installing Damper Clamp

Accessory for Vented Operation, page 12.

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace



 

 

12" or more Noncombustible

material OK.

Between 8" Install replace hood

and 12" accessory (GA6050,

GA6052 or GA6053, see

Accessories, page 29).

Less than 8" Noncombustible

material must be

extended to at least 8".

See Between 8" and 12",

above. If you cannot

extend material, you must

operate heater with ue

damper open.

MANTEL CLEARANCES

In addition to meeting noncombustible material

clearances, you must also meet required clearances

between replace openings and mantel shelf on

each side of the replace. If you do not meet the

clearances listed below, you will need a hood.



If you meet minimum clearance between mantel

shelf and top of replace opening, a hood is not

required (see Figure 6, page 11).





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.

Other manuals for FLAME-MAX VML27NR

This manual suits for next models

Table of contents

Other Desa Gas Heater manuals

Desa

Desa Comfort Glow RFN30TA Quick start guide

Desa

Desa Comfort Glow CGP16RA Quick start guide

Desa

Desa REM10PT Quick start guide

Desa

Desa Comfort Glow CGP11 Quick start guide

Desa

Desa BLUE FLAME BLUE FLAME VENT-FREE NATURAL GAS... Specification sheet

Desa

Desa Glo-Warm FGHS30LPB Quick start guide

Desa

Desa FLAME-MAX FLAME-MAX Golden Specification sheet

Desa

Desa DYNAVENT DNV25PB Quick start guide

Desa

Desa VMH3000TPA Quick start guide

Desa

Desa Comfort Glow RFP30TA Quick start guide

Desa

Desa GN30A Original instructions

Desa

Desa CSG3924NTA Quick start guide

Desa

Desa Comfort Glow CGN10T Quick start guide

Desa

Desa Glo-Warm FA-20BB Quick start guide

Desa

Desa VP10A Quick start guide

Desa

Desa CLD3018PT Quick start guide

Desa

Desa VYM27NR/PR Quick start guide

Desa

Desa RCP25 User manual

Desa

Desa Comfort Glow CGG3324N Quick start guide

Desa

Desa R Quick start guide

Desa

Desa Comfort Glow SL30PT Quick start guide

Desa

Desa CGS2718PA Quick start guide

Desa

Desa LDL3924NR Quick start guide

Desa

Desa UNVENTED (VENT-FREE) PROPANE GAS LOG HEATER 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