Desa VM36P, VM42PB, M42P, VM42B, M36P User Manual

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Desa VM36P, VM42PB, M42P, VM42B, M36P User Manual

For more information, visit www.desatech.com

B-VENT DECORATIVE GAS FIREPLACE

OWNER’S OPERATION AND INSTALLATION MANUAL

MODELS M36(B,H), M42(B,H), VM36(B,H) AND VM42(B,H) NATURAL GAS MODELS M36P(B,H), M42P(B,H), VM36P(B,H) AND VM42P(B,H) PROPANE/LP GAS

WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.

FOR YOUR SAFETY

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

WHAT TO DO IF YOU SMELL GAS :

Do not try to light any appliance.

Do not touch any electrical switch;

Do not use any phone in your building.

Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

If you cannot reach your gas supplier, call the fire department.

Installation and service must be performed by a qualified installer, service agency or the gas supplier.

SAVE THIS BOOK

Thisbookisvaluable.Inadditiontoinstructingyou on how to install and maintain your appliance, it also contains information that will enable you to obtain replacement parts or optional accessory items when needed. Keep it with your other important papers.

WARNING:Improperinstallation,adjustment,alteration,serviceormaintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier.

NOT FOR USE WITH SOLID FUEL

CHECK LOCAL CODES PRIOR TO

INSTALLATION

MASSACHUSETTS STATE CODE REQUIRES THE VENT DAMPER TO BE WELDED OPEN OR REMOVED.

This appliance may be installed in an aftermarket*, permanently located, manufactured (mobile) home, where not prohibited by state or local codes.

This appliance is only for use with the type of gas indicated on the rating plate.

This appliance is not convertible for use with other gases, unless a certified kit is used.

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

Save this manual for future reference.

2

TABLE OF CONTENTS

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

2

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

18

Unpacking ....................................................................................

3

Wiring Diagram...........................................................................

18

Introduction...................................................................................

3

Service Hints ..............................................................................

18

Product Specifications..................................................................

4

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

18

Selecting Location........................................................................

5

Replacement Parts.....................................................................

18

Pre-Installation Preparation..........................................................

5

Troubleshooting..........................................................................

19

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

8

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

22

Installation ..................................................................................

10

Accessories................................................................................

27

Operating Fireplace....................................................................

16

Warranty Information...................................................

Back Cover

Inspecting Burners ....................................................................

17

 

 

SAFETY INFORMATION

WARNING:Thisproductcontainsand/orgenerates 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 completelybeforetryingtoassemble,operateorservice this fireplace. Improper use of this fireplace can cause serious injury or death from burns, fire, explosions, electrical shock and carbon monoxide poisoning.

DANGER: Carbon monoxide poisoning may lead to death!

This fireplace is a vented product. This fireplace will not produce any gas leakage into your home if properly installed. This fireplace must be properly installed by a qualified service person. If this unit is not properly installed by a qualified service person, gas leakage can occur.

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If you have these signs, the fireplace may not have been installed properly. Get fresh air at once! Have fireplace inspected and serviced by a qualified service person. 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.

Propane/LP gas and natural gas are both odorless. An odor-making agent is added to each of these gases. The odor helps you detect a gas leak. However, the odor added to these gases can fade. 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 fireplace.

WARNING: Any change to this fireplace or its controls can be dangerous.

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 unless a certified kit is used.

2.For propane/LP fireplace, do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors. To prevent performance problems, do not use propane/LP fuel tank of less than 100 lbs. capacity.

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 neighborʼs phone. Follow the gas supplier's instructions

if you cannot reach you gas supplier, call the fire department.

4.Never install the fireplace

in a recreational vehicle

where curtains, furniture, clothing or other flammable objects are less than 42" from the front, top or sides of the fireplace

in high traffic areas

in windy or drafty areas

5.This fireplace reaches high temperatures. Keep children and adults away from hot surfaces to avoid burns or clothing ignition.Fireplacewillremainhotforatimeaftershutdown.Allow surfaces to cool before touching.

6.Carefully supervise young children when they are in the room with fireplace.

7.A hearth extension is not required with this appliance. If one is installed, it is for aesthetic purposes only and does not have to meet the standard requirements.

8.Turn fireplace off and let cool before servicing or repairing. Only a qualified service person should install, service or repair this fireplace. Have fireplace inspected annually by a qualified service person.

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108795-01M

SAFETY INFORMATION

Continued

9.You must keep control compartments, burners and circulating air passages clean. More frequent cleaning may be needed due to excessive lint and dust from carpeting, bedding material, etc. Turn off the gas valve and pilot light before cleaning fireplace.

10.Have venting system inspected annually by a qualified service person.Ifneeded,haveventingsystemcleanedorrepaired.See

Cleaning and Maintenance, page 18.

11.Keep the area around your fireplace clear of combustible materials, gasoline and other flammable vapor and liquids. Do not run fireplace where these are used or stored. Do not place items such as clothing or decorations on or around fireplace.

12.Do not use this fireplace to cook food or burn paper or other objects.

13.Do not use any solid fuels (wood, coal, paper, cardboard, etc.) in this fireplace. Use only the gas type indicated on fireplace nameplate.

14.This appliance, when installed, must be electrically grounded in accordance with local codes or, in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70 or the Canadian Electrical Code, CSA C22.1.

15.Do not obstruct the flow of combustion and ventilation air in any way. Provide adequate clearances around air openings into the combustion chamber along with adequate accessibility clearance for servicing and proper operation.

16.Do not install fireplace directly on carpeting, vinyl tile or any combustible material other than wood. The fireplace must set on a metal or wood panel extending the full width and depth of the fireplace.

17.Do not use fireplace if any part has been exposed to or under water. Immediately call a qualified service person to arrange for replacement of the unit.

18.Do not operate fireplace if any log is broken.

19.Do not use a blower insert, heat exchanger insert or other accessory not approved for use with this fireplace.

20.Provide adequate clearances around air openings.

UNPACKING

The following items are packed inside the firebox. Remove before positioning firebox into framing.

Transition Collar - For vent connection

Ceramic Log Pack - Shrink-wrapped on cardboard

Three (3) plastic bags containing lava rock, pan and ember materials

Rear Log - Remove the two plastic quick ties from around the burner and grate

Grate Stand - Lift off of burner pan

Check all items for any shipping damage. If damaged, promptly inform dealer or distributor where you bought the product.

Safely retain these items for later installation.

3

INTRODUCTION

Models M36(P)(B,H), VM36(P)(B,H), M42(P)(B,H) and VM42(P)(B,H) are vented gas fireplaces that use a millivolt gas control valve with a millivolt ignition system. A 6" B-Type venting system and a listed type vent cap are not supplied but are required for proper operation. See venting instructions on pages 9 and 10.

WARNING: This gas appliance must not be connected to a chimney flue servicing a solid fuel burning appliance.

Models M36(B,H), VM36(B,H), M42(B,H) and VM42(B,H) are factory equipped for use with natural gas and must be converted when intended for use with propane/LP gas. A respective model PCBM-36orPCBM-42conversionkitmaybepurchasedforsimple conversion to propane/LP gas. See Accessories, page 27.

BEFORE YOU BEGIN

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

This DESA appliance and its approved components are safe when installed according to this installation manual and are operated as recommended by DESA. Unless you use DESA approved components tested for this appliance, YOU MAY CAUSE A FIRE

HAZARD!

The DESA warranty will be voided by and DESA disclaims any responsibility for the following actions :

A)Modification of the appliance or any of the components.

B)UseofanycomponentpartnotapprovedbyDESAincombination with this appliance.

C)Installation and/or operation in a manner other than instructed in this manual.

D)The burning of anything other than the type of gas approved for use in this gas appliance.

The installation must conform with local codes or, in the absence of local codes, with the current National Fuel Gas Code, ANSI Z223.1/NFPA 54 or with the current CAN/CGA B149 Installation Codes.

ThisappliancecomplieswithANSIZ21.50-2000andCSA2.22-2000 as Vented Gas Fireplaces and is listed and tested by the Canadian Standards Association to the above test standards.

WARNING: Installation of this appliance should be done by a qualified service person well trained in the installation of such appliances. You will also need a buildingpermitfromyourlocalBuildingandSafetyCommissioner before installing this appliance; otherwise your insurance co. may not cover this appliance.

NOTICE: This appliance is not intended to be used as a primary source of heat.

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108795-01M

4

INTRODUCTION

Continued

CAUTION:Donotconnectappliancebeforepressure testinggaspiping.Damagetogasvalvemayresultand an unsafe condition may be caused.

Theapplianceanditʼsindividualshutoffvalvemustbedisconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa).

The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa).

For the purpose of input adjustment two pressure taps (for IN and OUT pressures)areprovidedonthegascontrolvalvefortestgauge connections to the appliance.

GAS RATING - NATURAL

 

M36(B,H), VM36(B,H)

M42(B,H), VM42(B,H)

 

 

 

Max. Input Rating:

40,000 Btu/Hr

45,000 Btu/Hr

 

 

 

Manifold Pressure:

3.5 in. WC (.87 kPa)

3.5 in. WC (.87 kPa)

Minimum Supply Pressure:

4.5 in. WC (1.12 kPa)

4.5 in. WC (1.12 kPa)

 

 

 

Maximum Supply Pressure:

10.5 in. WC (2.66 kPa)

10.5 in. WC (2.66 kPa)

 

 

 

Orifice Size:

# 30

# 29

 

 

 

GAS RATING - PROPANE/LP

 

M36P(B,H), VM36P(B,H)

M42P(B,H), VM42P(B,H)

 

 

 

Max. Input Rating:

40,000 Btu/Hr

45,000 Btu/Hr

Manifold Pressure:

10 in. WC (2.49 kPa)

10 in. WC (2.49 kPa)

 

 

 

Minimum Supply Pressure:

11 in. WC (2.74 kPa)

11 in. WC (2.74 kPa)

 

 

 

Maximum Supply Pressure:

13 in. WC (3.23 kPa)

13 in. WC (3.23 kPa)

Orifice Size:

# 52

# 50

 

 

 

PRODUCT SPECIFICATIONS

For Use With 6"Ø Type B-1 Vent Pipe Only

Stand Off

Collar

A F

 

E

HEARTH AREA

H

 

D

DIMENSIONS

 

 

 

 

 

7"

 

 

B

C

G

 

 

 

7"

Alternate

 

 

Gas Supply

 

 

 

 

 

 

Inlet

 

 

 

X

 

 

 

 

Glass Door

1.5"

 

 

 

 

 

 

 

13.5"

 

 

 

 

 

 

(Optional)

 

 

 

 

 

 

 

 

 

 

 

 

K

 

 

 

 

 

 

 

 

Outside Air

I

 

 

 

 

 

 

 

 

 

Kit Location

J

 

 

N

O

 

 

 

 

(Optional)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

S T

 

7"

 

 

 

 

W

 

 

P

 

 

L

 

 

 

 

 

V

 

Q

 

 

M

 

 

 

 

 

 

 

Model 36

 

Model 42

 

Model 36 Model 42

 

Model 36 Model 42

A

29"

36"

 

I

40 1/4"

44 1/4"

Q

13 7/8"

 

14"

B

5/8"

5/8"

 

J

21"

24"

R

10 1/2"

 

12 1/2"

C

41"

48"

 

K

8"

9"

S

2 1/2"

 

2 1/2"

D

12"

14"

 

L

34 3/4"

42"

T

8 1/8"

 

8 1/8"

E

21 1/4"

23"

 

M

42"

49"

U

11"

 

12 3/4"

F

22 1/4" (24" w/o Brick)

29 1/4" (31" w/o Brick)

N

36"

40"

V

7"

 

7"

G

32 5/8" (34" w/o Brick)

39 1/2" (41 1/4" w/o Brick)

O

37"

41"

W

2 1/4"

 

2 1/4"

H

15 3/4" (16 3/4" w/o Brick)

17 3/4" (18 3/4" w/o Brick)

P

8 5/8"

10 1/2"

X

5"

 

4 1/2"

Figure 1 - Appliance Dimensions

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108795-01M

SELECTING LOCATION

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

1.Thelocationmustallowforproperclearances(seeClearances, next column).

2.Consider a location where heat output would 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. Figure 2 shows a plan view of a few common locations.

Flush installations are recommended where living space is

limited or at a premium and since the space required to enclose

the appliance would be located beyond an outside wall, this would

also reduce the cutting of joists, roof rafters and such. Check local

codes for any restrictions.

 

Projected installations can extend any distance into the room.

A projection may be ideal for a new addition on an existing, fin-

ished wall.

 

Corner installations make use of space that may not normally

be used and provides a wider and more efficient range for radiant

heat transference.

 

Internalwallinstallationsprovideadiscreetoptionforroomsepa-

ration and can also be ideal as an addition to an existing wall.

 

CORNER

INTERNAL WALL

INSTALLATION

INSTALLATION

 

FULL

FLUSH

INSTALLATION

PROJECTION

 

INSTALLATION

 

Figure 2 - Possible Locations for Installing Appliance

5

PRE-INSTALLATION

PREPARATION

CLEARANCES

Minimum clearances to combustibles are:

• Back and Sides of Outer Surround..................... 0" min.

• Drywall to Sides of Front Face (Nailing Flanges)0" min.

“B” Vent Surfaces ..............................................

1" min.

Ceiling to Opening ...........................................

42" min.

Floor ...................................................................

0" min.

Perpendicular Wall........................

See Figure 6, page 7

CAUTION: Do not block required air spaces with insulation or any other material. Do not obstruct effective opening of appliance with any type of facing material.

2 x 4 Stud

Nailing Flange

Back

0" Clearance

Left Side

Surround

0"

 

 

Front Face

 

Drywall

Figure 3 - Minimum Clearances (Top View)

 

 

 

1" (25mm) Min.

 

 

 

Clearance to

 

 

 

"B" Vent's Outer Pipe

Ceiling

 

 

 

 

 

42" (1067mm)

 

 

 

 

 

Min. Clearance

 

 

Maintain 2" (51mm) Min.

from Opening to

 

 

Clearance to the Transition

Ceiling

 

 

Pipe as Measured at the

0" Clearance

 

 

Outer Vent Collar

 

*

*

*

*

Required Air

 

 

 

 

Spaces are

 

 

 

 

Indicated with

 

 

 

 

an "

". Do Not

 

 

 

 

*

 

 

 

 

 

Pack with

 

 

 

 

Insulation or Any

 

DO NOT BLOCK

 

Other Material

 

 

 

 

 

OR OBSTRUCT

 

 

 

0" Clearance to

 

OPENINGS

 

 

 

 

 

 

 

 

Combustible or

 

 

 

 

 

Noncombustible

 

 

 

 

 

Flooring

 

 

 

 

 

Figure 4 - Minimum Clearances (Front View)

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108795-01M

6

PRE-INSTALLATION PREPARATION

Continued

MANTEL CLEARANCES AND WALL DETAILS

A combustible mantle shelf maybe installed a maximum 12" (229 mm) from the wall. Figures 5 and 6 show the minimum allowable distances from various combustible mantle components in relation to the fireplace opening.

12"

Combustible

(229mm)

Materials

Header

6" (152mm)

A

B

Spacer

3" (76mm)

1 1/2" (38mm) Max.

 

 

TOP VIEW

 

 

Outer Surround

 

 

 

Combustible

 

 

 

Material May

 

 

 

Be Used

1 1/2" (38 mm)

 

SAFE

 

ZONE

Max.

3" (76 mm)

 

 

 

 

 

 

Max.

 

 

 

6" (152 mm)

 

 

 

Max.

 

 

 

A

 

Perpendicular

 

 

 

 

 

B

Wall

 

M36(B,H), M36P(B,H)

M42(B,H), M42P(B,H)

 

VM36(B,H), VM36P(B,H)

VM42(B,H), VM42P(B,H)

A

9" (229 mm)

 

6" (152 mm)

B

12" (305 mm)

 

9" (229 mm)

Figure 6 - Side Clearances - Top View (Cross Section)

 

M36(B,H), M36P(B,H)

M42(B,H), M42P(B,H)

 

VM36(B,H), VM36P(B,H)

VM42(B,H), VM42P(B,H)

A

14" (356 mm)

15" (381 mm)

B

8" (203 mm)

9" (229 mm)

 

 

 

Figure 5 - Mantel Clearances - Side View (Cross Section)

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108795-01M

PRE-INSTALLATION

PREPARATION

Continued

FRAMING

1.Frame appliance enclosure as illustrated in Figures 7 and 8.

Note: If a wall covering is used to line the enclosure, then all measurements must be from the surface of the covering.

2.Place the appliance into the framing and secure it.

Note: If appliance is to be raised above floor level, a platform must be built to support the appliance.

3.Install the supply line to the appliance using a 1/2" NPT black iron gas line terminating 2 5/16" above the bottom of the appliance. The gas line must be installed through the lower left side access point or alternate access hole in the bottom of the appliance (see Figure 19, page 11).

4.Repack insulation around the gas line to cover any remaining openings in the conduit sleeve. Prepare the incoming gas line with teflon tape or pipe joint compound and hook-up incoming gas line to the flexible gas line.

Note: If 1/2" NPT black iron pipe does not mate with fitting at the end of flexible gas line, remove fitting and replace with a 37 degree flare 3/4"-12, 1/2" NPT (female) fitting.

WARNING:Whenfinishingappliance,donotoverlap combustible material onto the black front face. Brick, tile or other noncombustible materials may be applied to the face provided that any gap is between the materialusedandthefaceiscaulkedwithanoncombustible caulking.

7

These Dimensions Allow for a 3/4" Clearance at Sides and Back of Fireplace. However, 0" Clearance is Permitted

D

C

A 3/4" Clearance

Not Required

at Nailing

Flanges

B

 

M36(B,H), M36P(B,H)

M42(B,H), M42P(B,H)

 

VM36(B,H), VM36P(B,H)

VM42(B,H), VM42P(B,H)

A

24 1/2" (622.3 mm)

27 9/16" (700.1 mm)

B

73 7/8" (1876.4 mm)

83 7/8" (2130.4 mm)

C

52 3/16" (1326 mm)

59 5/16" (1506.6 mm)

D

17 1/4" (438.2 mm)

19 1/2" (495.3 mm)

Figure 8 - Corner Installation Guidelines

INSTALLING TRANSITION PIPE AND STARTER COLLAR

ThetransitionpipeandstartercollarshowninFigure9aresupplied with the fireplace, unattached and ready for installation. Remove the starter collar and set aside. Slide the transition pipe over the vent collar and attach with a minimum of three screws. Replace the starter collar over the transition pipe and attach using four screws located on the leg stands (five used on the model M42). To install B-ventpiping,slidethefirstpieceofB-ventoverthetransitionpipe and attach with either a minimum of two screws or other means approved by the vent manufacturer.

B-Vent Piping

 

 

A

Starter Collar

 

 

 

 

B

 

 

 

C

 

Transition Pipe

 

 

 

 

M36(B,H), M36P(B,H)

M42(B,H), M42P(B,H)

 

 

VM36(B,H), VM36P(B,H)

VM42(B,H), VM42P(B,H)

Vent Collar

A

40 3/8" (1020 mm)

44 3/8" (1121 mm)

 

B

21 3/8" (543 mm)

23 1/8" (587 mm)

 

C

41 1/4" (1048 mm)

48 1/4" (1226 mm)

 

Figure 9 - Installing Transition Pipe and Starter Collar

Figure 7 - Rough Opening for Installing in Wall

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108795-01M

8

VENTING INSTALLATION

A B-type venting system must be connected to the appliance for venting to the outside of the building.

The following section is provided as a guide to a standard B-type vent installation.

Standing codes requirements concerning B-type vent installations may vary within your state, province or local codes jurisdiction. Therefore, it is recommended that you check with your local building codes for specific requirements or in absence of local codes, follow Section 7.0 of the current National Fuel Gas Code ANSI Z223.1/NFPA 54 andinCanadawithCAN/CGA B149 for Category I systems using double wall B-1 vent pipe.

Thisgasappliancemustbeventedtotheoutdoorsonlyandmaynot be terminated into an attic space or into a chimney flue servicing a solid-fuel burning appliance.

This appliance may be vented through a manufactured chimney system or a masonry chimney using a B-vent adapter or a chimney liner system if all are listed, inspected and approved by local codes and/or building authorities.

The examples shown in Figure 10 are typical of most B-vent installations and codes practices.

Example 1: Shows the minimum allowable system height and lateral offset for a 60° degree or greater inclination. Code specifies that offsets at 60° degrees or greater are considered horizontal and must follow the 75% percent rule for lateral to total vertical system height. Codes also allows only one offset in the total system when at 60° degrees or greater. The total vertical height in this example representstheminimumheightof8feetandthereforetheallowable lateral is 6 feet when the 75% percent rule applies. If the lateral lengthmustexceed75%thenthesystemmustbesizedinaccordance with the Category I venting tables.

Example 2:Showsamultipleoffseteachat45°degreesofinclination.Multipleoffsetsarepermittediftheydonotexceed45°degrees of inclination. The total lengths of the two offsets are not required to meet the 75% percent allowable rule.

Example 3: Shows a single offset at 45° degrees of inclination and therefore the lateral length at 10 feet of offset does not have to meet the 75% percent rule.

In each case the offsets must be supported and firestops must be positioned wherever the vent must pass through a sub-floor, ceiling joist or an attic overhang. The vent pipe must terminate vertically into a listed type vent cap and extend a sufficient height through an approved roof flashing, roof jack or a roof thimble. At all points the listed clearances must be maintained.

 

 

Listed

 

 

 

 

 

 

Vent Cap

 

 

Listed

Listed

 

 

 

 

 

Vent Cap

 

 

 

 

 

Vent Cap

 

 

 

 

 

 

 

Maintain

 

Maintain

 

 

 

 

 

Listed

 

 

Maintain

 

Listed

 

 

 

 

 

Clearance

 

Maintain

Listed

 

Clearance

 

 

 

 

Support Each

 

Listed

Clearance

 

 

 

 

 

 

 

Lateral At

 

Clearance

 

 

 

 

Least Every

45

 

 

 

 

60

Six (6) Feet

12' Min.

 

 

 

 

 

 

 

 

 

 

 

 

 

8'

6'

 

 

45

10'

12' Min.

Position

 

45

Position

12' Min.

 

Position

 

Firestop

 

Firestop

 

Firestop

 

 

 

 

 

 

 

 

Maintain

 

Maintain

 

Maintain

 

 

Listed

 

Listed

 

Listed

 

 

Clearance

 

Clearance

 

Clearance

EXAMPLE 1

EXAMPLE 2

EXAMPLE 3

Figure 10 - Typical B-Vent Configuration

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108795-01M

VENTING INSTALLATION

Continued

Vent terminations must be located in accordance with height and proximity rules of NFPA No. 54 or CAN/CGA B149. These rules apply to vents at 12 in. diameter or less and require a minimum height in accordance with the roof pitch and a minimum of 8 ft. distance from a vertical wall or obstruction (see Figure 11).

If venting horizontally through a side wall becomes necessary, a listedthimbleapprovedforusewithB-typeventmustbeused.Check with your local codes before venting through a side wall.

Some codes areas allow the use of existing B-type vent systems if the system is at or above the recommended diameter of the flue; in this case 6".

The flue connection must be made using listed B-type connectors and the existing system must be code inspected for damage and proper installation.

Itisnotrecommendedthatthisappliancebecommonventedwithan existinggasburningappliance.However,ifitbecomesnecessaryto common vent this appliance, the venting system must be sized and configuredinaccordancewiththecommonventingguidesAppendix G of the current National Fuel Gas Code ANSI Z223.1/NFPA 54 and in Canada with CAN/CGA B149.

Note: Before connecting this appliance to an existing vent system or a common venting system consult with your local architect, planner or building official.

9

WARNING: This appliance must be properly connected to a system and must not be connected to a chimney flue servicing a separate solid fuel burning appliance.

CHECKING FOR PROPER VENTING

After completing and checking the electrical, gas and vent connections, follow the lighting instructions and allow the main burner to run for approximately 5 minutes. Hold a lighted match or cigarette nearthetopedgeofthefireplaceopeningandplayitalongtheentire length of the opening (see Figure 12). Proper venting should tend to draw the flame or smoke into the appliance. Improper venting or escaping of spillage of burned gas, is indicated when the match flickersorgoesout.Smokefromacigarettewillalsotendtodisperse away from the appliance.

If the appliance is found to be improperly venting, shut it off and notify your installer or a qualified service agency to inspect the venting system.

NOTICE: This appliance is equipped with a vent safety shutoff switch which will shut down the appliance in the case of a venting problem. Do not bypass the vent safetyswitch.Iftheapplianceshouldshutdown,contact aqualifiedinstaller,serviceagencyoryourgassupplier to have the vent inspected before operating.

Lowest Listed

Discharge Vent Cap

Opening

 

8 Ft. Min.

Listed Gas

 

Vent

x

12

Roof Pitch x/12

 

 

Listed Clearance

H (Min)

Height

From Roof

Roof Pitch

H (Min.) Ft.

m

Flat to 6/12

1.0

0.30

6/12 to 7/12

1.25

0.38

Over 7/12 to 8/12

1.5

0.46

Over 8/12 to 9/12

2.0

0.61

Over 9/12 to 10/12

2.5

0.76

Over 10/12 to 11/12

3.25

0.99

Over 11/12 to 12/12

4.0

1.22

Over 12/12 to 14/12

5.0

1.52

Over 14/12 to 16/12

6.0

1.83

Over 16/12 to 18/12

7.0

2.13

Over 18/12 to 20/12

7.5

2.27

Over 20/12 to 21/12

8.0

2.44

Figure 11 - B-Vent Terminations

Check this area along the entire top edge of the fireplace opening. Smoke or flame should be drawn

into the appliance opening.

Figure 12 - Checking for Spillage

For more information, visit www.desatech.com

108795-01M

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