Desa VgM36h, VgM36, VgM42h, VgM50, VgM42 User Manual

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Residential Woodburning Fireplace

OWNER’S OPERATION AND INSTALLATION MANUAL

(V)GM36, (V)GM42 and (V)GM50

Wood Burning Masonry Fireplaces with Insulation (V)GM36H, (V)GM42H and (V)GM50H

Wood Burning Herringbone Masonry Fireplaces with Insulation

SAVE THIS BOOK

This book is valuable. In addition to instructing you on how to install and maintain your appliance, it also contains information that will enable you to obtain replacement parts or accessory items when needed. Keep it with your other important papers.

This fireplace is approved for use as a wood burning fireplace or for use with a vented gas log approved to

ANS Z21.60, Z21.84 or RGA 2-72 standards or for use with a vent-free gas log heater approved to ANS Z21.11.2 standard.

This wood burning fireplace complies with UL127- CAN/ULS-S610-M87 standard as a FACTORY BUILT APPLIANCE.

FOR CANADA: The authority having jurisdiction (such as the municipal building department, fire department, etc.) should be contacted before installation to determine the need to obtain a permit.

Save this manual for future reference.

For more information, visit www.desatech.com

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury, property damage or loss of life. Refer to this manual for assistance or additional information. Consult a qualified installer or local distributor.

Table of Contents

Safety Information................................................

2

Brick Installation.................................................

14

Specifications.......................................................

3

Glass Door Installation.......................................

22

Fireplace Installation............................................

6

Operation and Maintenance Guidelines.............

23

Venting Installation...............................................

8

Technical Service...............................................

24

Optional Gas Line Installation............................

12

Replacement and Accessory Parts....................

25

Safety Information

IMPORTANT: Check local codes before installing this fireplace.

Before beginning the installation of the fireplace, read these instructions through completely.

This DESA fireplace and its components are safewheninstalledaccordingtothisinstallation manual. Unless you use DESA components, which have been designed and tested for the fireplace system, 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 fireplace, components, doors, air inlet system and damper control.

b.Use of any component part not manufac- turedorapprovedbyDESAincombination with a DESA fireplace system.

Proper installation is the most important step in ensuring safe and continuous operation of the fireplace. Consult the local building codes as to the particular requirements concerned with the installation of all factory built fireplaces.

WARNING: Do not install a fireplaceinsertinthisboxunless the manufacturer's instructions with the insert specifically state thisfireplacehasbeentestedfor use with this insert.

Thisfireplaceisnotintendedtobe used as a substitute for a furnace to heat an entire home. Use for supplemental heat only.

FOR YOUR SAFETY

Do not store or use gasoline oranyotherflammablevapors or liquids in the vicinity of this or any other appliance.

Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies.

Do not place clothing or other flammablematerialsonornear the appliance.

Never leave children unattended when a fire is burning in the fireplace.

WARNING: Use solid wood or processed solid fuel firelogs only. When processed wood fuel fire logs are used, do not poke or stir the logs while they are burning. Use only fire logs that have been evaluated for the application in fireplace and refer to fire log warnings and caution markings on packaging prior to use.

WARNING: Always leave glass doors fully opened or fully closed when operating fireplace.

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112435-01M

Specifications

Models VGM36(H) and GM36(H)

ROUND TOP TERMINATION SQUARE CHASE-TOP

TERMINATION

1" CHIMNEY AIRSPACE CLEARANCE TO COMBUSTIBLE MATERIAL

 

 

NO COMBUSTIBLE

 

 

MATERIAL ON FACE

 

 

COMBUSTIBLE

 

 

WALL BOARD

11/2" AIR SPACE

 

 

BACK AND SIDES

 

 

OUTSIDE AIR

 

 

 

 

MINIMUM 12" TO

 

 

PERPENDICULAR

 

 

SIDEWALL

GAS LINE

 

HEARTH EXTENSION

KNOCKOUTS

 

 

60" X 20"

 

 

0" TO

12" EACH SIDE

 

BOTTOM

 

 

 

12"

29"

 

 

7.5"

67"

 

22"

58"

26.625"

 

 

 

 

 

49"

30"

 

 

 

0.625"

45"

 

 

 

 

8"

36"

 

 

45"

 

 

 

 

 

 

1"

 

AIR KIT

 

 

 

 

21.5"

LEFT SIDE

KNOCK OUT

 

 

GAS LINE

 

 

 

 

 

 

KNOCK OUTS

 

 

 

3.5"

 

10.5"

 

9.5"

 

20"

 

 

 

 

7"

 

 

 

10.75"

 

 

 

15.375"

 

 

36"

 

 

112435-01M

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Desa VgM36h, VgM36, VgM42h, VgM50, VgM42 User Manual

Specifications Continued

Models VGM42(H) and GM42(H)

ROUND TOP TERMINATION SQUARE CHASE-TOP

TERMINATION

2" CHIMNEY AIRSPACE CLEARANCE TO COMBUSTIBLE MATERIAL

NO COMBUSTIBLE

MATERIAL ON FACE

11/2" AIR SPACE BACK AND SIDES

OUTSIDE AIR

GAS LINE

KNOCKOUTS

0" TO

BOTTOM

67"

58"

49"

42" 8" 51"

1"

24.25"

41.25"

COMBUSTIBLE

WALL BOARD

MINIMUM 18" TO

PERPENDICULAR

SIDEWALL

HEARTH EXTENSION 66" X 20"

12" EACH SIDE

12"

30.5"

11"

21.25"

28.5"

30"

 

0.625"

51"

 

 

 

 

 

 

 

AIR KIT

 

 

LEFT SIDE

KNOCK OUT

 

 

 

GAS LINE

 

 

 

KNOCK OUTS

 

 

 

3.5"

23.5"

10.5"

 

9.5"

 

 

 

 

 

8.5"

 

 

 

13"

 

 

 

17"

 

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112435-01M

Specifications Continued

Models VGM50(H) and GM50(H)

ROUND TOP TERMINATION

SQUARE CHASE-TOP

 

TERMINATION

2" CHIMNEY AIRSPACE CLEARANCE TO COMBUSTIBLE MATERIAL

NO COMBUSTIBLE

MATERIAL ON FACE

COMBUSTIBLE

WALL BOARD

11/2" AIR SPACE BACK AND SIDES

OUTSIDE AIR

 

MINIMUM 18" TO

 

PERPENDICULAR

 

SIDEWALL

GAS LINE

 

KNOCKOUTS

HEARTH EXTENSION

 

0" TO

74" X 20"

12" EACH SIDE

BOTTOM

 

12"

 

 

 

 

38.5"

 

67"

 

 

11"

 

 

 

58"

 

 

21.25"

28.5"

 

 

49"

 

 

30"

 

 

 

0.625"

59"

 

 

50"

 

8"

 

 

59"

 

 

 

 

 

 

1"

 

 

 

 

 

AIR KIT

 

 

LEFT SIDE

KNOCK OUT

 

32.75"

 

 

 

GAS LINE

 

 

 

 

 

 

KNOCK OUTS

 

 

 

3.5"

 

10.5"

 

9.5"

 

23.5"

 

 

 

 

8.5"

 

 

 

13"

 

 

50"

17"

 

 

 

 

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Fireplace Installation

selecting location

To determine the safest and most efficient location for the fireplace, you must take into consideration the following guidelines:

1.The location must allow for proper clearances (see Figures 1 and 2).

2.Consider a location where the fireplace will not be affected by drafts, air conditioning ducts, windows or doors.

3.A location that avoids the cutting of joists or roof rafters will make installation easier.

4.Anoutsideairkitisavailablewiththisfireplace

(see Optional Outside Air Kit on page 8).

Minimum clearance to combustibles

Back and sides of fireplace

1 1/2" min.*

Front of fireplace

48" min.

Floor**

0" min.

Perpendicular wall to opening

18" min.

Model GM36

12" min.

Top spacers

0" min.

Mantel clearance

see Mantels, page 7

Chimney outer pipe surface

2" min.

Models GM36

1" min.

* Not required at nailing flanges ** See step 2 of Framing

WARNING: Do not pack required air spaces with insulation or other materials.

Minimum/Maximum Chimney Height

The minimum height of the chimney, measured from the base of the fireplace to the flue gas outlet of the termination, is 16 feet for straight flue or a flue with one elbow set. The maximum distance between elbows is 6 feet. For systems with two elbow sets, the minimum height is 22 feet. The maximum height of any system is 50 feet. This measurement includes the fireplace, chimney sec- tions and the height of the termination assembly at the level of the flue gas outlet (see Figure 15, page 11).

Framing

1.Frame the opening for the fireplace using the dimensions shown in Figures 1 and 2.

2.If the fireplace is to be installed directly on carpeting, tile (other than ceramic) or any combustible material other than wood floor- ing, the fireplace must be installed upon a metal or wood panel extending the full width and depth of the fireplace.

3.Set the fireplace directly in front of this open- ing and slide the unit back until the nailing flanges touch the side framing.

4.Check the level of the fireplace and shim with sheet metal if necessary.

5.Beforesecuringfireplacetopreparedframing, theemberprotector(provided)mustbeplaced between the hearth extension (not supplied) and under the bottom front edge of the fire- placetoprotectagainstglowingembersfalling through. If the fireplace is to be installed on a raised platform, a Z-type ember protector (not supplied) must be fabricated to fit your requiredplatformheight.Theemberprotector should extend under the fireplace a minimum of 1 1/2". The ember protector should be made ofgalvanizedsheetmetal(28gaugeminimum to prevent corrosion.

6.Using screws or nails, secure the fireplace to the framing through flanges located on the sides of the fireplace.

45.25" (36" Models)

51.25" (42" Models)

59" (50" Models)

67.125"

58.125"

30.125"

28.250" (36" Models)

Figure 1 - Framing Dimensions

61" (36" Models)

Maintain 1 1/2"

65" (42" Models)

Clearance at Sides

71" (50" Models)

and Back of Fireplace

 

1 1/2" Clearance

 

Not Required at

 

Nailing Flanges

86.5" (36" Models)

92" (42" Models)

100" (50" Models)

Figure 2 - Corner Installation

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112435-01M

Fireplace Installation

Continued

Hearth Extension

A hearth extension projecting a minimum of 20" in front of and a minimum of 12" beyond each side of the fireplace opening is required to protect combustible floor construction in front of the fire- place.Fabricateahearthextensionusingamaterial which meets the following specifications: a layer of noncombustible, inorganic material having a thermal conductivity of K=0.84 BTU IN/FT, HR. F (or less) at 1" thick. For example, if the material selected has a K factor of 0.25, such as glass fiber, the following formula would apply:

0.25 x 1.0" = 0.30" thickness required

0.84

Thermal conductivity "K" of materials can be obtained from the manufacturer or supplier of the noncombustible material. If the hearth extension istobecovered,usenoncombustiblematerialsuch as tile, slate, brick, concrete, metal, glass, marble, stone, etc. Provide a means to prevent the hearth extension from shifting and seal gap between the fireplace frame and hearth extension with a non- combustible material (see Figure 3).

WARNING:Hearthextension

is to be installed only as shown

in Figure 3.

Seal Gap

Fireplace Front

Ember Protector

Fireplace Front

 

Raised Hearth

 

Ember Protector

Hearth

 

 

Extension

Fireplace Front

Seal Gap

Elevated

 

Ember Protector

Figure 3 - Hearth Extension

Mantels

Amantelmaybeinstalledifdesired(seeFigure4). Woodworksuchaswoodtrims,mantelsoranyoth- er combustible material projecting from the front face must not be placed within 12" (GM36) or 18" (GM42/50) of the fireplace opening. Combustible materials above 12" (GM36) or 18" (GM42/50) and projecting more than 1 1/2" from the fireplace must not be placed less than 15" (GM36) or 21" (GM42/50) from the top opening of the fireplace (NFPA STD 211, Sec. 7-3.3.3).

Mantels or any other combustible material also may come up to the side edge of the black metal face of the fireplace just as long as the projection from the front face fall within the limit shown in Figure 4.

 

 

Combustible

 

12 1/4" Ref.

Material

 

 

Safe

6"

 

Zone for

Ref.

33°

Projection of

 

Combustible

 

 

 

3" Nom.

Materials

 

 

15" Min.

 

 

(GM36)

11/2" Max.

 

21" Min.

 

 

(GM42/50)

 

 

12" Min. (GM36)

Upper

18" Min. (GM42/50)

Section of

 

 

 

 

Fireplace

 

Fireplace

 

 

Opening

 

Top View of Fireplace

7.75" (GM36)

FIREBOX

11.5" (GM42/50)

 

 

3" Max.

SAFE ZONE

4.5"

33°

 

Min. to

Combustible

Perpendicular

Material Must

Side Wall

Not Overlap

12" - GM36

Front Face

18" - GM42/50

 

Figure 4 - Mantel Clearances to Combustible Material

112435-01M

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Venting Installation

Optional Outside air Kit

(Model ak4/ak4f)

The installation of an outside air kit should be per- formed during the rough framing of the fireplace due to the nature of it's location. Outside combus- tion air is accessed through a vented crawl space (AK4F) or through a sidewall (AK4).

CAUTION: Combustion air inlet ducts shall not terminate in attic space.

Secure to Collars with Metal Tape, Screws or Straps (Min. of 1/4" x 20" in size)

Air Inlet

Location

Must Allow

For Bushes

or Snow

 

Air Inlet

 

Eyebrow

Vented Crawl Space

Vent Hood

Required for

(Check Local Codes

Wall Installation

Before Installing in a

 

Vented Crawl Space)

 

Figure 5 - Outside Air Kit

Chimney Pipe

The DESA chimney system consists of 12", 18", 24", 36"' and 48" snap-lock, double-wall pipe segments, planned for maximum adaptability to individual site requirements. Actual lengths gained after fitting overlaps must be taken into consideration (lineal gain) and are given in the lineal gain chart (see Figure 6). Lineal Gain is the actualmeasurablelengthofapartaftertwoormore partsareconnected.ForCanada,usechimneyparts designated "HT".

WARNING: The opening in the collar around the chimney at the top of the fireplace must not be obstructed.Neveruseblowninsulation to fill the chimney enclosure.

LINEAL GAIN

PART NO.

DESCRIPTION

GAIN (IN)

Georgian

Fireplace

66 1/2"

12-12DM

Pipe Section

10 5/8"

12-12HT

 

 

18-12DM

Pipe Section

16 5/8"

18-12HT

 

 

24-12DM

Pipe Section

23 5/8"

24-12HT

 

 

36-12DM

Pipe Section

34 5/8"

36-12HT

 

 

48-12DM

Pipe Section

46 5/8"

48-12HT

 

 

RLT-12D

Round Termination

7 3/4"*

RLT-12HT

 

 

STL-12D

Square Chase-Top

7" to 15"*

 

with Slip Section

 

* The lineal gain for the terminations is measured to the flue gas outlet height.

15" Galvanized

Outer Pipe

12 3/8"

Hemmed

Stainless

End

 

Inner Pipe

 

Figure 6 - Lineal Gain

Assembly and installation of

double wall chimney system

Each double wall chimney section consists of a galvanized outer pipe, a stainless steel inner flue pipeandawirespacer.Thepipesectionsmustbeas- sembled independently as the chimney is installed. Whenconnectingchimneydirectlytothefireplace, the inner flue pipe section must be installed first with the lanced side up. The outer pipe section can then be installed over the flue pipe section with the hemmed end up. Press down on each pipe section untilthelancessecurelyengagethehemonthefire- placestarter.Thewirewillassuretheproperspacing between the inner and outer pipe sections.

Continuetoassemblechimneysectionsasoutlined above, making sure that both the inner and outer pipe sections are locked together. When install- ing double wall snap-lock chimney together, it is important to assure the joint between the chimney sections is locked. Check by pulling chimney upward after locking. The chimney will not come apart if properly locked. It is not necessary to add screws to keep the chimney together (exception, see Figure 9, page 10).

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112435-01M

Venting Installation

Continued

Using ELBOW offsets (30E-12DM)

1.To achieve desired offset, you may install combinations of 12", 18", 24", 36" and 48" length of double wall pipe (see offset chart and Figure 7).

OFFSET

RISE

 

CHIMNEY LENGTH

 

A

B

12"

18"

24"

36"

48"

4 3/8"

16 3/8"

 

ELBOW SET ONLY

 

9 3/4"

25 1/2"

1

 

 

 

 

 

 

12 3/4"

30 3/4"

 

 

1

 

 

 

 

15"

34 3/4"

 

 

 

1

 

 

 

18"

40"

1

 

1

 

 

 

 

21 1/4"

46 1/4"

 

 

 

 

1

 

 

23 3/4"

49 1/4"

 

 

1

1

 

 

 

27 3/4"

56 3/4"

 

 

 

 

 

 

1

30"

60 3/4"

 

 

1

 

1

 

 

33"

66"

 

 

 

 

 

 

1

36"

71"

 

 

1

 

 

 

1

38 1/4"

75"

 

 

 

 

2

 

 

41 1/4"

80 1/4"

1

 

1

 

1

 

 

45"

86 3/4"

 

 

 

 

2

 

 

46 3/4"

89 1/2"

1

 

1

 

 

 

1

51"

97"

 

 

 

 

1

 

1

53 1/4"

101"

 

 

 

 

2

 

 

56 1/4"

106 1/4"

 

 

 

 

 

 

2

59 1/4"

111 1/2"

 

 

1

 

1

 

1

61 3/4"

115 1/2"

1

 

 

 

 

 

2

64 3/4"

120 3/4"

 

 

1

 

 

 

2

68 1/4"

127"

 

 

 

 

2

 

1

70"

130"

1

 

1

 

 

 

2

74 1/4"

137 1/2"

1

 

 

 

2

 

1

76 3/4"

141 1/2"

 

 

1

 

2

 

1

79 3/4"

146 3/4"

 

 

 

 

4

 

 

OFFSET CHART (22-50 FT. SYSTEM HEIGHT)

2.Chimney weight above offset rests on return elbow. Straps must be securely nailed to rafters or joists (see Figure 8, details a and b).

3.Maximum length of pipe between supports (return elbow or 12S-12DM) is 6' of angle run. Maximum of two 6' angle run sections per chimney system (see Figure 7).

4.All pipe connections between the offset and return must be secured with two screws on the outer pipe only (see Figure 9, page 10). Do not penetrate the inner stainless.

See Detail A

2" Min.

Straps

Detail BStraps

See Detail B

Angle Firestop

 

Straps

Straps

Detail A

Return Elbow

Figure 8 - Ceiling Support Pipe

12S-12DM

 

Return

 

Return

 

 

Elbow

 

Elbow

 

Offset

 

Offset

 

Return

 

Elbow

 

 

Elbow

 

 

Elbow

6' Max.

 

 

6' Max.

Ceiling

 

 

 

 

Return

 

 

 

Support Pipe

 

 

Return

 

12S-12DM

6' Max.

Elbow

 

 

 

Elbow

 

 

 

 

 

 

 

 

 

6' Max.

Offset

Offset

 

 

 

 

 

 

Offset

 

Elbow

6' Max. Elbow

6' Max.

 

 

 

 

 

 

Elbow

 

 

 

 

 

 

A

 

B

C

 

 

Figure 7 - Typical Offset Terminations

 

 

112435-01M

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