Napoleon STARfire GD70NT-S, STARfire GD70PT-S Installation And Operation Instructions Manual

INSTALLER: THESE INSTRUCTIONS MUST BE CONVEYED TO AND REMAIN WITH THE HOMEOWNER.

CERTIFIED UNDER CANADIAN AND AMERICAN NATIONAL STANDARDS, CSA 2.33, ANSI Z21.88 FOR VENTED GAS FIREPLACE HEATERS

VENTED GAS FIREPLACE HEATER

DIRECT VENT MILLIVOLT SYSTEM

1

INSTALLATION AND OPERATION INSTRUCTIONS FOR:

NATURAL GAS MODEL

PROPANE GAS MODEL

CERTIFIED FOR CANADA AND UNITED STATES USING ANSI / CSA METHODS

GD70NT-S

GD70PT-S

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 other flammable vapours and 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 .

Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON L4M 4Y8 Canada • [phone] • fax[phone]

$10.00

www.napoleonfireplaces.com • [e-mail]

W415-0434 / D / 09.06.07

2

TABLE of CONTENTS

PG2-5 INTRODUCTION

Warranty
Dimensions
General Instructions
General Information
Care of Glass & Plated Parts

5-10 VENTING

Minimum Air Terminal Location Clearances
Typical Vent Installations
Special Vent Installation
Vent lengths

11-15 INSTALLATION

Wall & Ceiling Protection
Horizontal Installation
Vertical Installation
Using Flexible Vent Components
Fireplace Vent Connection
Using Rigid Vent Components
Restricting Vertical Vents
Gas Installation
Mobile Home Installation
Framing
Mantle and Enclosures Clearances

16-19 FINISHING

Door Installation
Door Opening and Closing
Louvre Installation
Log Shipping Bracket Removal
Decorative Panels
Charcoal Strips

Log Placement
Charcoal Embers
Glowing Embers
Logo Placement
Accent Lite Replacement
In line Switch

20 BLOWER INSTALLATION

THERMAL SWITCH
REPLACEMENT

21-22 OPERATION / MAINTENANCE

Operating Instructions
Maintenance

22 ADJUSTMENTS

Pilot Burner Adjustment
Venturi Adjustment

23-24 REPLACEMENTS

Ordering Replacement Parts
Replacement Parts
Terminal Kits
Vent Kits
Accessories

25-26 TROUBLE SHOOTING GUIDE

27 SERVICE HISTORY

28 NOTES

PLEASE RETAIN THIS MANUAL FOR FUTURE REFERENCE

WARNING

• DO NOT BURN WOOD OR OTHER MATERIALS IN THIS FIREPLACE.

• ADUL TS AND ESPECIALLY CHILDREN SHOULD BE ALERTED TO THE HAZARDS OF HIGH SURF ACE TEMPERATURES AND SHOULD STA Y AWAY TO AVOID BURNS
OR CLOTHING IGNITION. SUPERVISE YOUNG CHILDREN WHEN THEY ARE IN THE SAME ROOM AS THE FIREPLACE.

• CLOTHING OR OTHER FLAMMABLE MATERIAL SHOULD NOT BE PLACED ON OR NEAR THE FIREPLACE.

• DUE TO HIGH TEMPERATURES, THE FIREPLACE SHOULD BE LOCATED OUT OF TRAFFIC AND AWAY FROM FURNITURE AND DRAPERIES.

• ENSURE YOU HAVE INCORPORATED ADEQUATE SAFETY MEASURE TO PROTECT INFANTS/T ODDLERS FROM TOUCHING HOT SURF ACES.

• EVEN AFTER THE FIREPLACE IS OUT, THE GLASS AND/OR SCREEN WILL REMAIN HOT FOR AN EXTENDED PERIOD OF TIME.

• CHECK WITH YOUR LOCAL HEARTH SPECIAL T Y DEALER FOR SAFETY SCREENS AND HEARTH GUARDS TO PROTECT CHILDREN FROM HOT SURFACES. THESE
SCREENS AND GUARDS MUST BE FASTENED TO THE FLOOR.

• ANY SAFETY SCREEN OR GUARD REMOVED FOR SERVICING MUST BE REPLACED PRIOR TO OPERATING THE FIREPLACE.

• IT IS IMPERATIVE THA T THE CONTROL COMP ARTMENTS, BURNERS AND CIRCULATING BLOWER AND ITS PASSAGEWA Y IN THE FIREPLACE AND VENTING
SYSTEM ARE KEPT CLEAN. THE FIREPLACE AND ITS VENTING SYSTEM SHOULD BE INSPECTED BEFORE USE AND AT LEAST ANNUALLY B Y A QUALIFIED SER VICE
PERSON. MORE FREQUENT CLEANING MAY BE REQUIRED DUE T O EXCESSIVE LINT FROM CARPETING, BEDDING MATERIAL, ETC. THE FIREPLACE AREA MUST
BE KEPT CLEAR AND FREE FROM COMBUSTIBLE MA TERIALS, GASOLINE AND OTHER FLAMMABLE V APOURS AND LIQUIDS.

• UNDER NO CIRCUMSTANCES SHOULD THIS FIREPLACE BE MODIFIED.

• THIS FIREPLACE MUST NOT BE CONNECTED TO A CHIMNEY FLUE PIPE SERVING A SEPARATE SOLID FUEL BURNING APPLIANCE.

• DO NOT USE THIS FIREPLACE IF A NY P ART HAS BEEN UNDER WATER. IMMEDIATELY CALL A QUALIFIED SERVICE TECHNICIAN TO INSPECT THE FIREPLACE AND
TO REPLACE ANY P A RT OF THE CONTROL SYSTEM AND ANY GAS CONTROL WHICH HAS BEEN UNDER WATER.

• DO NOT OPERATE THE FIREPLACE WITH THE GLASS DOOR REMOVED, CRACKED OR BROKEN. REPLACEMENT OF THE GLASS SHOULD BE DONE BY A
LICENSED OR QUALIFIED SERVICE PERSON.

• DO NOT STRIKE OR SLAM SHUT THE FIREPLACE GLASS DOOR.

• THIS FIREPLACE USES AND REQUIRES A FAST ACTING THERMOCOUPLE. REPLACE ONL Y WITH A F AST ACTING THERMOCOUPLE SUPPLIED BY WOLF STEEL
LTD.

• PRESSURE RELIEF DOORS MUST BE KEPT CLOSED WHILE THE FIREPLACE IS OPERA TING TO PREVENT EXHAUST FUMES CONT AINING CARBON MONOXIDE,
FROM ENTERING INTO THE HOME. TEMPERATURES OF THE EXHAUST ESCAPING THROUGH THESE OPENINGS CAN ALSO CAUSE THE SURROUNDING

NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.

W415-0434 / D / 09.06.07

NAPOLEON® products are manufactured under the strict Standard of the world recognized

ISO 9001 : 2000 Quality Assurance Certificate.

NAPOLEON® products are designed with superior components and materials, assembled by trained craftsmen
who take great pride in their work. The burner and valve assembly are leak and test-fired at a quality test
station. The complete fireplace is thoroughly inspected by a qualified technician before packaging to ensure that
you, the customer, receives the quality product that you expect from NAPOLEON®.

NAPOLEON® GAS FIREPLACE PRESIDENT'S LIFETIME LIMITED
WARRANTY

The following materials and workmanship in your new napoleon® gas fireplace are warranted against defects for as
long as you own the fireplace. This covers: combustion chamber, heat exchanger, stainless steel burner, PHAZER™
logs and embers, ceramic glass (thermal breakage only), gold plated parts against tarnishing, porcelainized enamelled
components and aluminum extrusion trims.
Electrical (110V and millivolt) components and wearable parts such as the blower, gas valve, thermal switch, switches,
wiring, remote control, ignitor, gasketing, and pilot assembly are covered and NAPOLEON® will provide replace­ment parts free of charge during the first year of the limited warranty. Light bulbs are not covered by this warranty.

Labour related to warranty repair is covered free of charge during the first year. Repair work, however, requires the
prior approval of an authorized company official. Labour costs to the account of NAPOLEON® are based on a
predetermined rate schedule and any repair work must be done through an authorized NAPOLEON® dealer.

3

CONDITIONS AND LIMITATIONS

NAPOLEON® warrants its products against manufacturing defects to the original purchaser only -- i.e., the individual or legal entity (registered
customer) whose name appears on the warranty registration card filed with NAPOLEON® -- provided that the purchase was made through an
authorized NAPOLEON® dealer and is subject to the following conditions and limitations:

This factory warranty is nontransferable and may not be extended whatsoever by any of our representatives.

The gas fireplace must be installed by a licenced, authorized service technician or contractor. Installation must be done in accordance with the
installation instructions included with the product and all local and national building and fire codes.

This limited warranty does not cover damages caused by misuse, lack of maintenance, accident, alterations, abuse or neglect and parts installed
from other manufacturers will nullify this warranty.

This limited warranty further does not cover any scratches, dents, corrosion or discolouring caused by excessive heat, abrasive and chemical
cleaners nor chipping on porcelain enamel parts, mechanical breakage of PHAZER™ logs and embers, nor any venting components used in the
installation of the fireplace.

NAPOLEON® warrants its stainless steel burners against defects in workmanship and material for life, subject to the following conditions: During
the first 10 years NAPOLEON® will replace or repair the defective parts at our option free of charge. From 10 years to life, NAPOLEON® will provide
replacement burners at 50% of the current retail price.

In the first year only, this warranty extends to the repair or replacement of warranted parts which are defective in material or workmanship provided
that the product has been operated in accordance with the operation instructions and under normal conditions.

After the first year, with respect to this President's Limited Lifetime Warranty, NAPOLEON® may, at its discretion, fully discharge all obligations
with respect to this warranty by refunding to the original warranted purchaser the wholesale price of any warranted but defective part(s).

After the first year, NAPOLEON® will not be responsible for installation, labour or any other costs or expenses related to the reinstallation of a
warranted part, and such expenses are not covered by this warranty.

Notwithstanding any provisions contained in this President's Limited Lifetime Warranty, NAPOLEON®’S responsibility under this warranty is
defined as above and it shall not in any event extend to any incidental, consequential or indirect damages.

This warranty defines the obligations and liability of NAPOLEON® with respect to the NAPOLEON® gas fireplace and any other warranties
expressed or implied with respect to this product, its components or accessories are excluded.

NAPOLEON® neither assumes, nor authorizes any third party to assume, on its behalf, any other liabilities with respect to the sale of this product.
NAPOLEON® will not be responsible for: over-firing, downdrafts, spillage caused by environmental conditions such as rooftops, buildings, nearby
trees, hills, mountains, inadequate vents or ventilation, excessive venting configurations, insufficient makeup air, or negative air pressures which
may or may not be caused by mechanical systems such as exhaust fans, furnaces, clothes dryers, etc.

Any damages to fireplace, combustion chamber, heat exchanger, brass trim or other component due to water, weather damage, long periods of
dampness, condensation, damaging chemicals or cleaners will not be the responsibility of NAPOLEON®.

The bill of sale or copy will be required together with a serial number and a model number when making any warranty claims from your authorized
dealer. The warranty registration card must be returned within fourteen days to register the warranty.

NAPOLEON® reserves the right to have its representative inspect any product or part thereof prior to honouring any warranty claim.

ALL SPECIFICATIONS AND DESIGNS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE DUE TO ON-GOING PRODUCT IMPROVEMENTS. NAPOLEON® IS A REGISTERED
TRADEMARK OF WOLF STEEL LTD. PA TENTS U.S. 5.303.693.801 - CAN. 2.073.411, 2.082.915. © WOLF STEEL LTD.

W415-0434 / D / 09.06.07

4

FIGURE 1

WARNING: The door for this fireplace is sold

separately. The door must be installed and

closed before operation begins. Refer to

"DOOR INSTALLATION" under the "FINISH-

ING" Section for details.

GENERAL INSTRUCTIONS

THIS GAS FIREPLACE SHOULD BE INSTALLED AND
SERVICED BY A QUALIFIED INST ALLER to conform with

local codes. Installation practices vary from region to re­gion and it is important to know the specifics that apply to
your area,

for example: in Massachusetts State:

• The fireplace damper must be removed or welded in the
open position prior to installation of a fireplace insert or
gas log.

• The appliance off valve must be a “T” handle gas cock.

• The flexible connector must not be longer than 36 inches.

• The appliance is not approved for installation in a

bedroom or bathroom unless the unit is a direct vent
sealed combustion product.

• WARNING: This product must be installed by a licensed
plumber or gas fitter when installed within the
commonwealth of Massachusetts.

In absence of local codes, install to the current CAN/CGA ­B149 Installation Code in Canada or to the National Fuel
Gas Code, ANSI Z223.1, and NFPA 54 in the United States.
Suitable for mobile home installation if installed in accor­dance with the current standard CAN/CSA Z240MH Series,
for gas equipped mobile homes, in Canada or ANSI Z223.1
and NFPA 54 in the United States.

The fireplace and its 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 fireplace 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).

When the fireplace is installed directly on carpeting, vinyl tile or
other combustible material other than wood flooring, the fire­place shall be installed on a metal or wood panel extending
the full width and depth.

The optional heat circulating blower is supplied with a cord. If
installed, the junction box must be electrically connected and
grounded in accordance with local codes. In the absence of
local codes, use the current CSA C22.1 CANADIAN ELECTRI­CAL CODE in Canada or the ANSI/NFPA 70 NATIONAL ELEC­TRICAL CODE in the United States.

Purge all gas lines with the glass door of the fireplace open.
Assure that a continuous gas flow is at the burner before
closing the door.

Under extreme vent configurations, allow several minutes
(5-15) for the flame to stabilize after ignition.

Eight (8") inches is the minimum bend radius allowed for
the 7" diameter flexible air liner.

Provide adequate ventilation and combustion air. Provide
adequate accessibility clearance for servicing and operat­ing the fireplace. Never obstruct the front opening of the
fireplace.

Objects placed in front of the fireplace must be kept a
minimum of 48" from the front face of the unit.

Minimum clearance to combustible
construction from fireplace and vent surfaces:

Combustible framing - 0" to stand-offs (rear only)
Non-combustible framing* - 0" to stand-offs (top and sides

only)

Combustible finishing - 0" to bottom edge of the fireplace
Non-combustible finishing** - 10" to top edge of the fireplace

- 3" to side edges of the fireplace
Enclosure top - 16"
Vent pipe*** - 2"
Recessed depth - 16 inches

* The top header must be steel. The sides studs must be
steel.

** The first 10 inches of finishing material above the
fireplace and the first 3 inches from the sides of the
fireplace must be non-combustible.

*** The first 2 feet of outer 7 inch diameter vent pipe from
the appliance must be wrapped in the 1" thick insulation
sleeve (supplied). Make sure the insulation is pulled down
tight to the fireplace when installed. There must be a 1
inch air gap in addition to the inulation sleeve. See Figure

34.

GENERAL INFORMATION

FOR YOUR SA TISFACTION, THIS FIREPLACE HAS BEEN TEST ­FIRED TO ASSURE ITS OPERA TION AND QUALITY! Maximum

input is 35,000 BTU/hr for natural gas and 33,000 BTU/hr for propane.
When the fireplace is installed at elevations above 4,500ft, and in the
absense of specific recommendations from the local authority having
jurisdiction, the certified high altitude input rating shall be reduced at
the rate of 4% for each additional 1,000ft. Maximum output for natural
gas is 28,350 BTU/hr at an efficiency of 81%; and 26,400 BTU/hr for
propane at an efficiency of 80%. Minimum A.F .U.E. rating is 64% for
natural gas and 65% for propane. Minimum inlet gas supply pressure
is 4.5 inches water column for natural gas and 11 inches water
column for propane. Maximum inlet gas pressure is 7 inches water
column for natural gas and 13 inches water column for propane.
Manifold pressure under flow conditions is 3.5 inches water column
for natural gas and 10 inches water column for propane.

W415-0434 / D / 09.06.07

5

No external electricity (110 volts or 24 volts) is
required for the gas system operation.

Expansion / contraction noises during heating up and
cooling down cycles are normal and are to be expected.
Change in flame appearance from "HI" to "LO" is more
evident in natural gas than in propane.

VENTING

VENTING LENGTHS & AIR TERMINAL LOCATIONS

Use only Wolf Steel, Simpson Dura-Vent, Selkirk Direct
Temp or American Metal Amerivent venting components.

Minimum and maximum vent lengths, for both horizontal
and vertical installations, and air terminal locations for ei­ther system are set out in this manual and must be ad­hered to. For Simpson Dura-Vent, Selkirk Direct Temp and
American Metal Amerivent, follow the installation procedure
provided with the venting components.
All outer pipe joints of these venting systems must be
sealed using Red RTV Hight Temperature Sealant.

Wolf Steel, Simpson Dura-Vent, Selkirk Direct Temp and
American Metal Amerivent venting systems must not be
combined.

For the following vent systems a starter adaptor must be
used and may be purchased from the corresponding
supplier:

Supplier 4&7 ZC 5&8 ZC GAS STOVE

Dura-Vent W175-0053 W175-0170 GDS924N
Amerivent 4DSC-N2 5DSC-N 4DSCB-N1

Direct T emp 4DT-AAN 5DT-A A 4DT -AAN
For vent systems that provide seals on the inner exhaust flue,

only the outer air intake joints must be sealed using a red high
temperature silicone (RTV). This same sealant maybe used on
both the inner exhaust and outer intake vent pipe joints of all other
approved vent systems except for the exhaust vent pipe
connection to the fireplace flue collar which must be sealed using
the black high temperature sealant Mill Pac. High temperature
sealant must be ordered separately .

When using Napoleon venting components, use only approved
Wolf Steel Ltd. rigid / flexible vent component s with the following
termination kits: WALL TERMINAL KIT GD222, or 1/12 TO 7/12
PITCH ROOF TERMINAL KIT GD1 10, 8/12 TO 12/12 ROOF TERMINAL
KIT GD11 1, FLAT ROOF TERMINAL KIT GD112 or PERISCOPE KIT
GD201 (for wall penetration below grade). With flexible venting,
in conjunction with the various terminations, use either the 5 foot
vent kit GD220 or the 10 foot vent kit GD330. These vent kits allow
for either horizontal or vertical venting of the fireplace. FIGURES
2 and 3.

The maximum allowable vertical vent length is 40 feet. The
maximum number of allowable 4" vent connections is three
horizontally or vertically (excluding the fireplace and the air
terminal connections) when using aluminum flexible venting.

For optimum flame appearance and fireplace performance, keep
the vent length and number of elbows to a minimum. The air terminal
must remain unobstructed at all times. Examine the air terminal at
least once a year to verify that it is unobstructed and undamaged.

When venting, the horizontal run must be kept to a mini­mum of 12 inches or a maximum of 20 feet. If a 20 foot
horizontal run is required, the fireplace must have a
minimum vertical rise immediately off the fireplace of
57 inches. When terminating vertically, the vertical rise
is a minimum 34 inches and a maximum 40 feet above
the fireplace. FIGURE 3.

Horizontal runs may have a 0 inch rise per foot in all
cases using SIMPSON DURA-VENT or NAPOLEON
RIGID OR FLEXIBLE venting components when vent­ing as illustrated in Figures 2 and 4.

CARE OF GLASS, AND PLATED PARTS

Do not use abrasive cleaners to clean plated parts. Buff
lightly with a clean dry cloth. The glass is 3/16" ceramic
glass available from your Napoleon / Wolf Steel Ltd.
dealer. DO NOT SUBSTITUTE MATERIALS. Clean the
glass after the first 10 hours of operation with a recom­mended gas fireplace glass cleaner. Thereafter clean as
required. DO NOT CLEAN GLASS WHEN HOT! If the
glass is not kept clean permanent discolouration and / or
blemishes may result.

For optimum performance, it is recommended
that all horizontal runs have a minimum 1 inch
rise per foot.
Different types of venting systems must not be
combined. Only one type of vent system must
be used for the entire installation.
Provide a means for visually checking the vent
connection to the fireplace after the fireplace
is installed.
Do not allow the inside liner to bunch up on hori­zontal or vertical runs and elbows. Keep it pulled
tight. A 1¼" air gap between the inner and outer
liner all around is required for safe operation.
Vent lengths that pass through unheated
spaces (attics, garages, crawl space) should
be wrapped with a protective insulation sleeve
to minimize condensation.
Use a firestop when penetrating interior walls,
floor or ceiling. Elbows require 3" spacers, one
at the start, one at the middle and one at the
end to ensure the 1 1/4" air gap is maintained.
In order to avoid the possibility of exposed in­sulation or vapour barrier coming in contact with
the fireplace body, it is recommended that the
walls of the fireplace enclosure be 'finished',
(i.e. drywall/sheetrock) as would any other
outside wall of the home. This will ensure that
clearance to combustibles is maintained within
the cavity.
For safe and proper operation of the fireplace
follow the venting instructions exactly.

W415-0434 / D / 09.06.07

6

MINIMUM AIR TERMINAL LOCATION CLEARANCES

FIGURE 2

W415-0434 / D / 09.06.07

TYPICAL VENT INSTALLATIONS

7

FIGURE 3

FIGURE 4

For optimum performance, it is
recommended that all horizontal runs
have a 1 inch rise per foot.

When terminating vertically, the vertical
rise is a minimum 36 inches and a
maximum 40 feet from the center of the
fireplace flue outlet.

SPECIAL VENT INSTALLATION

PERISCOPE TERMINATION

Use the GD201 periscope kit to locate the air termination
above the grade. The periscope must be installed so that
when final grading is completed, the bottom air slot is
located a minimum of 12 inches above the grade. The
maximum allowable vent length depends on the model
of fireplace, as illustrated.

FIGURE 5

W415-0434 / D / 09.06.07

8

DEFINITIONS

for the following symbols used in the venting calcula­tions and examples are:

> - greater than
> - equal to or greater than
< - less than
< - equal to or less than

- total of both horizontal vent lengths (HR) and offsets

H

T

(H

) in feet

H

H

V

O

- combined horizontal vent lengths in feet

R

- offset factor: .03(total degrees of offset - 90°* ) in

O

feet

- combined vertical vent lengths in feet

T

TOP EXIT / HORIZONTAL TERMINATION

when (HT) < (VT)

Simple venting configuration (only one 90° elbow)

FIGURE 6

ELBOW VENT LENGTH VALUES

feet inches

1° 0.03 0.5
15° 0.45 6.0
30° 0.9 11.0
45° 1.35 16.0
90°* 2.7 32.0

* the first 90° offset has a zero value and is shown in
the formula as -90°

For vent configurations requiring more than one 90° el­bow, the following formulas apply:

Formula 1: H
Formula 2: H

Example 1:

< V

T

T

+ VT < 40 feet

T

90°

H

2

See graph to determine the required vertical rise VT for the
required horizontal run H

.

T

VERTICAL
RISE IN
FEET

V

T

HORIZONTAL VENT RUN PLUS OFFSET IN FEET

H

T

The shaded area within the lines represents acceptable
values for H

W415-0434 / D / 09.06.07

and VT.

T

FIGURE 7

V

2

90°

H

90°

V

1

V1=3 ft

=8 ft

V

2

VT=

H1= 2.5 ft
H
H
H
HT= HR + HO = 4.5 + 5.4 = 9.9 ft

H

Formula 1: H

Formula 2: H

Since both formulas are met, this vent configuration is ac­ceptable.

V1 +

V2 =

3 + 8 = 11 ft

=2 ft

2

= H1 + H2 = 2.5 + 2 = 4.5 ft

R

=.

O

T

03(three 90° elbows - 90°) = .03(270° - 90°) = 5.4 ft

+ VT = 9.9 + 11 = 20.9 ft

< V

T

9.9 < 11

20.9

T

+ VT < 40 feet

T

< 40

1

TOP EXIT / HORIZONTAL TERMINATION

9

when (H

) > (VT)

T

Simple venting configuration (only one 90° elbow)

FIGURE 8

See graph to determine the required ver­tical rise V
H

.

T

for the required horizontal run

T

REQUIRED
VERTICAL
RISE IN
INCHES

V

T

HORIZONTAL VENT RUN PLUS OFFSET IN FEET

H

T

The shaded area within the lines represents acceptable
values for H

and VT.

T

For vent configurations requiring more than one 90° elbow
the following formulas apply:

Formula 1: HT< 4.2 V

T

Formula 2: HT+ VT< 24.75 feet

H

1

Example 2:

H

2

Example 3:

90°

H

1

V

V

1

V

2

V

T

H

1

H

2

H

3

H

4

H

R

H

O

H

T

=4 ft
= 1.5 ft
= V1 + V2 = 4 + 1.5 = 5.5 ft
=2 ft
=1 ft
=1 ft
= 1.5 ft
= H1 + H2 + H3 + H4 = 2 + 1 + 1 + 1. 5 = 5.5 ft
= .03(four 90° elbows - 90°) = .03(360° - 90°) = 8.1 ft
= HR + HO = 5.5 + 8.1 = 13.6 ft

90°

1

HT + VT= 13.6 + 5.5 = 19.1 ft

Formula 1:HT < 4.2 V

T

4.2 VT = 4.2 x 5.5 = 23.1 ft

13.6 < 23.1

Formula 2:HT + VT < 24.75 feet

19.1 < 24.75

Since both formulas are met, this vent configuration is ac­ceptable.

H

2

FIGURE 10

V

2

H

3

H

4

V

1

V
H
H
H
H
H

HT + VT=

= VT = 6 ft

1

=3 ft

1

=5 ft

2

= H1 + H2 = 3 + 5 = 8 ft

R

= .03(two 90° elbows - 90°) = .03(180° - 90°) = 2.7 ft

O

= HR + HO = 8 + 2.7 = 10.7 ft

T

10.7 + 6 =16.7

Formula 1: HT < 4.2 V

90°

T

4.2 VT = 4.2 x 6 = 25.2 ft

10.7 < 25.2

Formula 2: HT + VT < 24.75 feet

16.7 < 24.75

Since both formulas are met, this vent configuration is ac­ceptable.

FIGURE 9

W415-0434 / D / 09.06.07