Desa Flame-Max VYM27PR Quick start guide

For more information, visit www.desatech.com

WARNING: If the information in this manual is not

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

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

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

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



— WHAT TO DO IF YOU SMELL GAS

 

 



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

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

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



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

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

UNVENTED (VENT-FREE) GAS

LOG HEATER

OWNER’S OPERATION AND

INSTALLATION MANUAL

FLAME-MAX® 

VYM27NR AND VYM27PR

Remote Control Ready Models

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







     

Air for Combustion and

Ventilation

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

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

www.desatech.com 121353-01F2

SAFETY

  

 

alteration, service or

maintenance can cause

   -



for correct installation

  -

   

additional information

   -





   -

   



masonry or UL127 fac-



-

    -



in accordance with ANSI

  

   

   

that includes instructions

-

     



-

stalled in an aftermarket,*

 

 

-





     

   

   

   



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

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

   

  

chemicals known to the State

of California to cause cancer or

-







    -

    



    

   

   



TAbLE OF CONTENTS

Safety .................................................................. 2

Product Identication........................................... 5

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

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

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

Remote Control Accessories ............................... 6

Air for Combustion and Ventilation ...................... 6

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

Operation........................................................... 18

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

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

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

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

Specications .................................................... 28

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

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

Technical Services............................................. 28

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

Parts .................................................................. 30

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

www.desatech.com

121353-01F 3





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

of carbon monoxide poisoning resemble the

u, with headaches, dizziness, or nausea.

If you have these signs, the heater may not

be working properly. 

Have heater serviced. Some people are

more affected by carbon monoxide than oth-

ers. These include pregnant women, people

with heart or lung disease or anemia, those

under the inuence of alcohol, and those at

high altitudes.

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

propane/LP gases are fuel gases. Fuel gases

are odorless. An odor-making agent are add-

ed to fuel gases. The odor helps you detect

a fuel gas leak. However, the odor added to

fuel gas can fade. Fuel gas may be present

even though no odor exists.

Make certain you read and understand all

warnings. Keep this manual for reference. It

is your guide to safe and proper operation of

this heater.

    

this heater or its controls can



WARNING: Do not use a

   

-



WARNING: Do not allow fans







    

   



    







 

    







    





   

will remain hot for a time after





-

dren when they are in the room

    

hand-held remote accessory,



   

    



    



    



    

-

-



1. This appliance is only for use with the type

of gas indicated on the rating plate. This

appliance is not convertible for use with

other gases.

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

inside any structure. Locate propane/LP

supply tank(s) outdoors (propane/LP units

only).

3. To prevent performance problems, the

use of a propane/LP tank of less than

100 lbs. capacity is not recommended

(propane/LP units only).

SAFETY

Continued

www.desatech.com 121353-01F4

SAFETY

Continued

12. This heater needs fresh, outside air ven-

tilation 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 24.

13. Do not run heater

• where ammable 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 ex-

posed 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.

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 servic-

ing, installing, or repairing. Make sure the

selector switch is in the OFF position. Only

a qualied service person should install,

service, or repair heater.

18. Make sure the 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 could cause pilot outage.

21. Provide adequate clearances around air

openings.

22. Keep burner and control compartment

clean.

23. Solid fuels shall not be burned in a re-

place in which an unvented room heater

is installed.

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 neighbor’s phone. Follow the gas

supplier’s instructions

• if you cannot reach your gas supplier,

call the re department

5. 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 11). This gas log set may not be

installed as a vented appliance in a bed-

room or bathroom in the Commonwealth

of Massachusetts.

6. 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. A dirty

chimney ue may create and distribute

soot within the house. Inspect chimney

ue for damage. If damaged, repair ue

and rebox before operating heater.

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

UL127 factory-built replace in which a

vent-free room heater is installed.

8. 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.

9. This log heater is designed to be smoke-

less. If logs ever appear to smoke, turn off

heater and call a qualied service person.

Note: During initial operation, slight smok-

ing could 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 prod-

ucts may create a white powder residue

within burner box or on adjacent walls or

furniture.

www.desatech.com

121353-01F 5

Figure 1 - Product Identication

Control

Knob

Piezo

Ignitor Log Set

Base

Assembly

Optional

Remote

Control

Flame

Adjustment

Knob

Optional

Selector

Switch

PRODUCT IDENTIFICATION

UNPACkING

CAUTION: Do not remove the

-

-





1. Remove logs and heater base assembly

from carton. Note: Do not pick up heater

base assembly by the burner. This could

damage heater. Always handle base as-

sembly 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 heat-

ers. This heater may also be operated as a

vented decorative product (ANSI Z21.60) by

opening ue damper (non-thermostat opera-

tion 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 reboxes 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

requires no matches, batteries, or other

sources to light heater.

LOCAL CODES

Install and use heater with care. Follow all

local codes. In the absence of local codes,

use the latest edition of The National Fuel

Gas Code, ANSI Z223.1/NFPA 54*.

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

Note: Where listed vented decorative logs

are required, thermostat operation is not

permitted.

State of Massachusetts: The installation

must be made by a licensed plumber or

gas tter in the Commonwealth of Mas-

sachusetts.

Sellers of unvented propane or natural

gas-red supplemental room heaters shall

provide to each purchaser a copy of 527

CMR 30 upon sale of the unit.

Vent-free gas products are prohibited for

bedroom and bathroom installation in the

Commonwealth of Massachusetts.

www.desatech.com 121353-01F6

REMOTE CONTROL ACCESSORIES

you classify your space and provide adequate

ventilation.



The air that leaks around doors and windows

may provide enough fresh air for combus-

tion and ventilation. However, in buildings of

unusually tight construction, you must provide

additional fresh air.

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

as 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/hr (4.8 m3 per kw) of the aggregate

input rating of all appliances installed in that

space and an unconned space as a space

whose volume is not less than 50 cubic feet per

1,000 Btu/hr (4.8 m3 per kw) of the aggregate

input rating of all appliances installed in that

space. Rooms communicating directly with the

space in which the appliances are installed*,

through openings not furnished with doors, are

considered a part of the unconned space.

* Adjoining rooms are communicating only if

there are doorless passageways or ventilation

grills between them.

There are 4 optional controls that can be pur-

chased 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.

AIR FOR COMbUSTION AND VENTILATION

WARNING: This heater shall



    





National Fuel Gas Code, ANSI

Z223.1/NFPA 54, the International

Fuel Gas Code,  

  







Today’s homes are built more energy efcient

than ever. New materials, increased insula-

tion, 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 ap-

pliances need fresh air for proper combustion

and ventilation.

Exhaust fans, replaces, clothes dryers, and

fuel burning appliances draw air from the house

to operate. You must provide adequate fresh

air for these appliances. This will insure proper

venting of vented fuel-burning appliances.





The following are excerpts from National Fuel

Gas Code, ANSI Z223.1/NFPA 54, Air for

Combustion and Ventilation.

All spaces in homes fall into one of the three

following ventilation classications:

1. Unusually Tight Construction

2. Unconned Space

3. Conned Space

The information on pages 6 through 8 will help

www.desatech.com

121353-01F 7

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 passageways or ventilation grills

between the rooms.

1. Determine the volume of the space (length

x width x height).

Length x Width x Height =__________ c u .

ft. (volume of space)

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

(width) x 8 ft. (ceiling height) = 2560 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: 2560 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 heater _________Btu/Hr

Gas water heater* _________Btu/Hr

Gas furnace _________Btu/Hr

Vented gas heater _________Btu/Hr

Gas replace logs _________Btu/Hr

Other gas appliances* +_________Btu/Hr

Total =_________Btu/Hr

* Do not include direct-vent gas appliances.

Direct-vent draws combustion air from the

outdoors and vents to the outdoors.

Example:

Gas water heater* __________ Btu/Hr

Vent-free heater + _________ 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)

40,000

33,000

73,000

Example: 51,200 Btu/Hr (maximum the

space can support)

73,000 Btu/Hr (actual amount of Btu/Hr

used)

The space in this 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 additional fresh air. Your options

are as follows:

A. Rework worksheet, adding the space of an

adjoining room. If the extra space provides an

unconned space, remove door to adjoining

room or add ventilation grills between rooms.

See Ventilation Air From Inside Building.

B. Vent room directly to the outdoors. See

Ventilation Air From Outdoors, page 8.

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

size makes room unconned.

If the actual Btu/Hr used is less than the maxi-

mum Btu/Hr the space can support, the space is

an unconned space. You will need no additional

fresh air ventilation.

WARNING: If thearea inwhich





-





   National Fuel

Gas Code,ANSI Z223.1/NFPA 54,

the International Fuel Gas Code,







This fresh air would come from an adjoining

unconned space. When ventilating to an

adjoining unconned space, you must provide

two permanent openings: one within 12" of

the ceiling and one within 12" of the oor

on the wall connecting the two spaces (see

options 1 and 2, Figure 2, page 8). You can

also remove door into adjoining room (see

option 3, Figure 2). Follow the National Fuel

Gas Code, ANSI Z223.1/NFPA 54, Air for

Combustion and Ventilation for required size

of ventilation grills or ducts.

AIR FOR COMbUSTION AND VENTILATION

Continued

www.desatech.com 121353-01F8

INSTALLATION

Outlet

Air

V e ntilated

Attic

Outlet

Air

Inlet

Air

Inlet Air V e ntilated

Crawl Space

T o

Crawl

Space

T o Attic

AIR FOR COMbUSTION AND VENTILATION

Continued

Figure 2 - Ventilation Air from Inside

Building

Remove

Door into

Adjoining

Room,

Option

Ve ntilation Grills

Into Adjoining Room,

Option 2

Ve ntilation

Grills Into

Adjoining

Room,

Option 1

12"



Provide extra fresh air by using ventilation

grills or ducts. You must provide two perma-

nent openings: one within 12" of the ceiling

and one within 12" of the oor. Connect these Figure 3 - Ventilation Air from Outdoors

items directly to the outdoors or spaces open

to the outdoors. These spaces include attics

and crawl spaces. Follow the National Fuel

Gas Code, ANSI Z223.1/NFPA 54, Air for

Combustion and Ventilation for required size

of ventilation grills or ducts.

IMPORTANT: Do not provide openings for

inlet or outlet air into attic if attic has a thermo-

stat-controlled power vent. Heated air entering

the attic will activate the power vent.

NOTICE: This heater is intended

    





     -

















 -





NOTICE:State orlocalcodesmay

-

    







    

-



-





    





    



WARNING: Seal any fresh

air vents or ash clean-out doors

-



     

   



www.desatech.com

121353-01F 9

WARNING: Never install the

heater

     

unless installed as a vented



 

 -



arelessthan 42"fromthefront,



 

 

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 Ventila-

tion, page 6.

CHECK GAS TYPE

Use only the correct type of gas (natural or

propane/LP). If your gas supply is not the

correct gas type, do not install heater. Call

dealer where you bought heater for proper

type heater.







-





INSTALLATION

Continued

INSTALLATION AND CLEARANCES



WARNING: Maintain the

   



    -



MINIMUM FIREPLACE CLEARANCE









Size



  Width

27" 17" 19" 32"

Carefully follow the instructions below. This

will ensure safe installation into a masonry,

UL127-listed manufactured replace, or listed

vent-free rebox.





A. Clearances from the side of the replace

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 com-

bustible material must be 4" from the side

of the replace cabinet (see Figure 4).

Note: When installing your gas logs into

a manufactured rebox, follow rebox

manufacturer’s instructions for minimum

clearances to combustible materials.

B. 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

www.desatech.com 121353-01F10

INSTALLATION

Continued

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace

NOTICE: Manual control heaters



If so, you must always run heater



    





 Installing Damper

Clamp Accessory for Vented

Operation



MATERIAL CLEARANCES



Note: If using a mantel, proceed to If Using

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

mation below.

You must have noncombustible material(s)

above both replace openings. Noncombus-

tible materials (such as slate, marble, tile, etc.)

must be at least 1/2" thick. With sheet metal,

you must have noncombustible material be-

hind it. Noncombustible material must extend

at least 8" up. If noncombustible material is

less than 12", you must install the replace

hood accessory. See Figure 5 for minimum

clearances.

IMPORTANT: If you cannot meet these mini-

mum clearances, you must operate heater

with chimney ue damper open. Go to Install-

ing 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 noncombustible material be-

hind it. Noncombustible material must extend







Safe Installation

12" or more Noncombustible

material OK.

Between 8" and 12" Install replace hood

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.

at least 8" up. 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 Figures 6

and 7, page 11, for minimum clearances.

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