Desa H) AND VM42EP(B Quick start guide

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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
B-VENT DECORATIVE ELECTRONIC IGNITION GAS FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
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.
WARNING: If the information in these instructions is
not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.

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WARNING: Improper installation, adjustment, altera-
tion, service or maintenance can cause injury or prop-
erty damage. Refer to this manual for correct installation
and operational procedures. For assistance or addi-
tional 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*, per-
manently 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.
TABLE OF CONTENTS
Safety Information ............................................... 3
Unpacking ........................................................... 4
Introduction .......................................................... 4
Selecting Location ............................................... 5
Product Specifications ......................................... 6
Pre-Installation Preparation ................................. 7
Venting Installation .............................................. 9
Installation ..........................................................11
Operating Fireplace ........................................... 18
Inspecting Burners ............................................ 19
Cleaning and Maintenance ................................ 20
Service Hints ..................................................... 20
Technical Service .............................................. 20
Replacement Parts ............................................ 20
Wiring Diagram .................................................. 21
Troubleshooting ................................................. 22
Illustrated Parts Breakdown and Parts List ....... 24
Accessories ....................................................... 29
Warranty Information ............................Back Page

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108796-01K 3
SAFETY INFORMATION
WARNING: This product
contains and/or generates
chemicals known to the State
of California to cause cancer or
birth defects or other reproduc-
tive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op-
erate 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-
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 Cleaning
and Maintenance, page 20.

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11. Keep the area around your fireplace clear of
combustible materials, gasoline and other
flammable vapor and liquids. Do not run fire-
place 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 replace-
ment 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 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
SAFETY INFORMATION
Continued
Check all items for any shipping damage. If dam-
aged, promptly inform dealer or distributor where
you bought the product.
Safely retain these items for later installation.
INTRODUCTION
Models M36E(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.
WARNING: This gas appli-
ance 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 appli-
ance, 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.

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108796-01K 5
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 test-
ing 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.
INTRODUCTION
Continued
Figure 1 - Possible Locations for
Installing Appliance
INTERNAL WALL
INSTALLATION
CORNER
INSTALLATION
FULL
PROJECTION
INSTALLATION
FLUSH
INSTALLATION
SELECTING LOCATION
To determine the safest and most efficient location
for your appliance, you must take into consider-
ation 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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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"
PRODUCT SPECIFICATIONS
GAS RATING - NATURAL
M36E(B,H),
VM36E(B,H)
M42E(B,H),
VM42E(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
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
Vent Pipe Only
B
E
D
C
DIMENSIONS
HEARTH AREA
7"
Figure 2 - Appliance Dimensions

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108796-01K 7
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
CAUTION: Do not block
required air spaces with insu-
lation or any other material. Do
not obstruct effective opening
of appliance with any type of
facing material.
Figure 3 - Minimum Clearances
(Top View)
0"
0" Clearance
Nailing
Flange
Front Face
Left Side
Surround
Back
Drywall
2 x 4 Stud
Figure 4 - Minimum Clearances
(Front View)
**
**
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
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.
Spacer
3" (76mm)
1 1/2"
(38mm) Max.
B
6" (152mm)
A
12"
(229mm)
Combustible
Materials
Header
Figure 5 - Mantel Clearances - Side View
(Cross Section)
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 14" (356 mm) 15" (381 mm)
B 8" (203 mm) 9" (229 mm)
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
Figure 6 - Side Clearances - Top View
(Cross Section)
M36E(B,H),
M36EP(B,H)
VM3E6(B,H),
VM36EP(B,H)
M42E(B,H),
M42EP(B,H)
VM42E(B,H),
VM42EP(B,H)
A 9" (229 mm) 6" (152 mm)
B 12" (305 mm) 9" (229 mm)

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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 ac-
cess 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.
WARNING: When finishing
appliance, do not overlap com-
bustible 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.
Figure 7 - Rough Opening for Installing
in Wall
B
C
A
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 8 - Corner Installation Guidelines
A
B
C
D
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 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)
These Dimensions Allow for a 3/4"
Clearance at Sides and Back of Fireplace.
However, 0" Clearance is Permitted
3/4" Clearance Not Required at
Nailing Flanges

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108796-01K 9
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.
Figure 9 - Installing Transition Pipe and
Starter Collar
B-Vent Piping
Transition Pipe
Starter Collar
Vent Collar
PRE-INSTALLATION
PREPARATION
Continued
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
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".

www.desatech.com 108796-01K10
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
Vent Cap
Listed
Vent 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
Figure 10 - Typical B-Vent Configuration
VENTING INSTALLATION
Continued
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.
Lowest
Discharge
Opening
Listed
Vent Cap
8 Ft. Min.
Roof Pitch x/12
Listed Clearance
12
x
Listed Gas
Vent
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