Desa M36EP, M42EP, VM42EPB, VM36EP User Manual

B-VENT DECORATIVE ELECTRONIC IGNITION GAS FIREPLACE

OWNER’S OPERATION AND INSTALLATION MANUAL

MODELS M36E(B,H), M42E(B,H), VM36E(B,H) AND VM42E(B,H)

NATURAL GAS

MODELS M36EP(B,H), M42EP(B,H), VM36EP(B,H) AND

VM42EP(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 quali-

fied installer, service agency or the gas supplier.

Save this manual for future reference.

For more information, visit www.desatech.com

WARNING: Improper installation, adjustment, altera­tion, service or maintenance can cause injury or prop­erty damage. Refer to this manual for correct installation
and operational procedures. 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

SAVE THIS BOOK

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

other important papers.

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 indi
cated 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.

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

Unpacking ........................................................... 4

Introduction .......................................................... 4

Selecting Location ............................................... 5

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

Pre-Installation Preparation ................................. 7

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

Installation ..........................................................11

Operating Fireplace ........................................... 18

Inspecting Burners ............................................ 19

TABLE OF CONTENTS

Cleaning and Maintenance ................................ 20

Service Hints ..................................................... 20

Technical Service .............................................. 20

Replacement Parts ............................................ 20

6

Wiring Diagram .................................................. 21

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

9

Illustrated Parts Breakdown and Parts List ....... 24

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

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

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Back Page

108796-01K2

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22

SAFETY INFORMATION

WARNING: This product
contains a n d / o r generates
chemicals known to the State
of California to cause cancer or
birth defects or other reproduc­tive harm.

IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op­erate or service 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. How
ever, 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 ap
pliance 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. Fireplace will
remain hot for a time after shutdown. 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 quali
fied service person.

9. You must keep control compartments, burn

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ers and circulating air passages clean. More
frequent cleaning may be needed due to ex
cessive 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. If needed, have vent
ing system cleaned or repaired. See
and Maintenance, page 20.

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Cleaning

108796-01K 3

www.desatech.com

SAFETY INFORMATION

Continued

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 electri
cally 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 combus
tion 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 ex
posed 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. Prov ide adeq ua te clear an ces arou nd 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 card

board

• 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

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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.

INTRODUCTION

Mo d e l s M3 6 E (P)( B , H ), VM36E( P ) ( B,H),
M42E(P)(B,H) and VM42E(P)(B,H) are vented
gas fireplaces that use an electronic control valve
and electronic 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.

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

Models M36E(B,H), VM36E(B,H), M42E(B,H)
and VM42E(B,H) are factory equipped for use
with natural gas and must be converted when in
tended for use with propane/LP gas. A respective
model PCBE-36 or PCBE-42 conversion kit may
be purchased for simple conversion to propane/LP
gas. See Accessories, page 29.

BEFORE YOU BEGIN

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

This DESA appliance and its approved compo
nents are safe when installed according to this
installation manual and are operated as recom
mended 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 dis
claims any responsibility for the following actions :

A) Modification of the appliance or any of the

components.

B) Use of any component part not approved by

DESA in combination 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

This appliance complies with ANSI Z21.50-2000
and CSA 2.22-2000 as Vented Gas Fireplaces and
is listed and tested by the Canadian Standards
Association to the above test standards.

108796-01K4

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INTRODUCTION

INTERNAL WALL
INSTALLATION

CORNER
INSTALLATION

FULL
PROJECTION
INSTALLATION

FLUSH
INSTALLATION

Continued

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 building permit from
your local Building and Safety
Commissioner 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.

CAUTION: Do not connect
appliance before pressure test­ing gas piping. Damage to gas
valve may result and an unsafe
condition may be caused.

The appliance and itʼs individual shutoff valve
must be disconnected 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 sup
ply 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) are provided on
the gas control valve for test gauge connections
to the appliance.

SELECTING LOCATION

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

1. The location must allow for proper clearances
(see Clearances, page 7).

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 1 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, finished wall.

Corner installations make use of space that
may not normally be used and provides a wider
and more efficient range for radiant heat transfer
ence.

Internal wall installations provide a discreet
option for room separation and can also be ideal
as an addition to an existing wall.

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Figure 1 - Possible Locations for

Installing Appliance

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108796-01K 5

www.desatech.com

PRODUCT SPECIFICATIONS

S

T

P

Q

R

X

Outside Air
Kit Location
(Optional)

K

7"

J

I

M

L

V

13.5"

1.5"

Glass Door
(Optional)

W

O

N

Alternate

Gas Supply

Inlet

7"

G

H

F

A

Stand Off

Collar

For Use With
6"Ø Type B-1

Ve

nt Pipe Only

B

E

D

C

DIMENSIONS

HEARTH AREA

7"

GAS RATING - NATURAL

M36E(B,H),

VM36E(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)

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

M42E(B,H),

VM42E(B,H)

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

Figure 2 - Appliance Dimensions

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Model 36 Model 42 Model 36 Model 42 Model 36 Model 42
A 29" 36" I 40

B 5/8" 5/8" J 21" 24" R 10 1/2" 12 1/2"
C 41" 48" K 8" 9" S 2
D 12" 14" L 34

1

E 21

/4" 23" M 42" 49" U 11" 12 3/4"

1

/4" (24" w/o Brick) 29 1/4" (31" w/o Brick) N 36" 40" V 7" 7"

F 22
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"

3

H 15

/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"

1

/4" 44 1/4" Q 13 7/8" 14"

3

/4" 42" T 8 1/8" 8 1/8"

1

/2" 2 1/2"

108796-01K6

PRE-INSTALLATION

0"

0" Clearance

*

*

**

42" (1067mm)
Min. Clearance
from Opening to
Ceiling

0" Clearance

Ceiling

1" (25mm) Min.
Clearance to
"B" Vent's Outer Pipe

Maintain 2" (51mm) Min.
Clearance to the Transition
Pipe as Measured at the
Outer Vent Collar

Required Air
Spaces are
Indicated with
an "

*

". Do Not
Pack with
Insulation or Any
Other Material

DO NOT BLOCK
OR OBSTRUCT

OPENINGS

0" Clearance to
Combustible or
Noncombustible
Flooring

Spacer

3" (76mm)

1

1

/

2

"

(38mm) Max.

B

6" (152mm)

A

12"

(229mm)

Combustible
Materials

Header

1

1

/

2

" (38 mm)

Max.

3" (76 mm)
Max.

6" (152 mm)
Max.

A

B

Outer Surround

Combustible
Material May
Be Used

TOP

VIEW

SAFE
ZONE

Perpendicular
Wall

PREPARATION

CLEARANCES

Minimum clearances to combustibles are:

• Back and Sides of Outer Surround . . .

• Drywall to Sides of Front Face

(Nailing Flanges) . . . . . . . . . . . . . .

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

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

• Floor . . . . . . . . . . . . . . . . . . . . . . . . . .

• Perpendicular Wall . . . . . . . . . . .

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.

Nailing

Left Side
Surround

Flange

Back

0" min.

0" min.

1" min.

42" min.

0" min.

See Figure 6

2 x 4 Stud

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.

M36E(B,H),

M36EP(B,H)

VM36E(B,H),

VM36EP(B,H)

A 14" (356 mm) 15" (381 mm)

B 8" (203 mm) 9" (229 mm)

M42E(B,H),

M42EP(B,H)

VM42E(B,H),

VM42EP(B,H)

Figure 5 - Mantel Clearances - Side View

(Cross Section)

Front Face

Drywall

Figure 3 - Minimum Clearances

(Top View)

108796-01K 7

Figure 4 - Minimum Clearances

(Front View)

A 9" (229 mm) 6" (152 mm)

B 12" (305 mm) 9" (229 mm)

Figure 6 - Side Clearances - Top View

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M36E(B,H),

M36EP(B,H)

VM3E6(B,H),

VM36EP(B,H)

(Cross Section)

M42E(B,H),
M42EP(B,H)
VM42E(B,H),

VM42EP(B,H)

PRE-INSTALLATION

B

C

A

A

B

C

D

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
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 13).

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.

5

/16"

M36E(B,H),

M36EP(B,H)

VM36E(B,H),

VM36EP(B,H)

M42E(B,H),
M42EP(B,H)
VM42E(B,H),

VM42EP(B,H)

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 7 - Rough Opening for Installing

in Wall

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

WARNING: When finishing
appliance, do not overlap com­bustible material onto the black
front face. Brick, tile or other non
combustible materials may be
applied to the face provided that
any gap is between the material
used and the face is caulked with
a noncombustible caulking.

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A 24 1/2"

B 73 7/8"

C 52 3/16"

D 17 1/4"

Figure 8 - Corner Installation Guidelines

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3/4" Clearance Not Required at
Nailing Flanges

M36E(B,H),

M36EP(B,H)

VM36E(B,H),

VM36EP(B,H)

M42E(B,H),
M42EP(B,H)
VM42E(B,H),

VM42EP(B,H)

27 9/16"

(622.3 mm)

(700.1 mm)

83 7/8"

(1876.4 mm)

(2130.4 mm)

59 5/16"

(1326 mm)

(1506.6 mm)

19 1/2"

(438.2 mm)

(495.3 mm)

108796-01K8

PRE-INSTALLATION

PREPARATION

Continued

INSTALLING TRANSITION PIPE AND
STARTER COLLAR

The transition pipe and starter collar shown in
Figure 9 are supplied 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 M42E). To install
B-vent piping, slide the first piece of B-vent over
the transition pipe and attach with either a mini
mum of two screws or other means approved by
the vent manufacturer.

B-Vent Piping

Starter Collar

Transition Pipe

Vent Collar

Figure 9 - Installing Transition Pipe and

Starter Collar

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 and in Canada with CAN/CGA
B149 for Category I systems using double wall
B-1 vent pipe.

This gas appliance must be vented to the outdoors
only and may not be terminated into an attic space
or into a chimney flue servicing a solid-fuel burn
ing appliance.

This appliance may be vented through a manufac
tured 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, page 10 are
typical of most B-vent installations and codes
practices.

Example 1: Shows the minimum allowable sys
tem 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

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example represents the minimum height of 8 feet
and therefore the allowable lateral is 6 feet when
the 75% percent rule applies. If the lateral length
must exceed 75% then the system must be sized in
accordance with the Category I venting tables.

Example 2: Shows a multiple offset each at 45°
degrees of inclination. Multiple offsets are permit
ted if they do not exceed 45° 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 flash
ing, roof jack or a roof thimble. At all points the
listed clearances must be maintained.

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, page 10).

If venting horizontally through a side wall be
comes necessary, a listed thimble approved for use
with B-type vent must be used. 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 recom
mended diameter of the flue; in this case 6".

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108796-01K 9

www.desatech.com

Maintain
Listed
Clearance

12' Min.

12' Min.

45

45

6'

8'

12' Min.

60

45

Position
Firestop

Position
Firestop

Position
Firestop

Listed
Vent Cap

Listed
Ve

nt Cap

Listed
Ve

nt Cap

Maintain
Listed
Clearance

Maintain
Listed
Clearance

Maintain
Listed
Clearance

Maintain
Listed
Clearance

Maintain
Listed
Clearance

Support Each
Lateral At
Least Every
Six (6) Feet

Maintain
Listed
Clearance

10'

EXAMPLE 3EXAMPLE 2EXAMPLE 1

Lowest
Discharge
Opening

Listed
Vent Cap

8 Ft. Min.

Roof Pitch x/12
Listed Clearance

12

x

Listed Gas
Ve

nt

H (Min)
Height
From Roof

VENTING INSTALLATION

Figure 10 - Typical B-Vent Configuration

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

It is not recommended that this appliance be com
mon vented with an existing gas burning appliance.
However, if it becomes necessary to common vent
this appliance, the venting system must be sized
and configured in accordance with the common
venting guides Appendix 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 sys
tem consult with your local architect, planner or
building official.

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.

Continued

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Roof Pitch

-

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

Over 11/12 to 12/12

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

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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

H (Min.)

Ft. m

3.25 0.99

4.0 1.22

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