CONSUMER: RETAIN THIS MANUAL FOR FUTURE REFERENCE.
NEVER LEAVE CHILDREN OR OTHER AT RISK INDIVIDUALS ALONE WITH THE APPLIANCE.
INSTALLATION AND
OPERATING INSTRUCTIONS
CERTIFIED UNDER CANADIAN AND AMERICAN NATIONAL STANDARDS: ANSI Z21.50 ● CSA 2.22 FOR VENTED GAS FIREPLACE HEATERS.
CLHD45N
CERTIFIED FOR CANADA AND UNITED STATES USING ANSI/CSA METHODS.
SAFETY INFORMATION
NATURAL GAS
1
!
WARNING
If the information in these instructions
are not followed exactly, a fi re or
explosion may result causing property
damage, personal injury or loss of life.
- Do not store or use gasoline or other fl ammable
vapors 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
neighbour’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
fi re department.
- Installation and service must be performed by a
qualifi ed installer, service agency or the supplier.
This appliance may be installed in an aftermarket,
permanently located, manufactured home (USA
only) or mobile home, where not prohibited by
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
certifi ed kit is used.
CLHD45P
PROPANE
SHOWN WITH OPTIONAL SURROUND
!
WARNING
HOT GLASS WILL CAUSE
BURNS.
DO NOT TOUCH GLASS UNTIL
COOLED.
$10.00
NEVER ALLOW CHILDREN TO
TOUCH GLASS.
Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON, L4M 0G8 Canada /
103 Miller Drive, Crittenden, Kentucky, USA, 41030
3.1 VENTING LENGTHS AND COMPONENTS FOR DIRECT VENT INSTALLATIONS 9
3.2 TYPICAL VENT INSTALLATIONS 10
3.3 SPECIAL VENT INSTALLATIONS 11
3.3.1 PERISCOPE TERMINATION 11
3.3.2 CORNER TERMINATION 11
3.4 VENT TERMINAL CLEARANCES 12
3.5 VENT APPLICATION FLOW CHART 13
3.6 DEFINITIONS 13
3.7 ELBOW VENT LENGTH VALUES 13
3.8 HORIZONTAL TERMINATION 14
3.9 VERTICAL TERMINATION 16
3.10 VERTICAL THROUGH EXISTING CHIMNEY 18
4.2 VENT HEAT SHIELD INSTALLATION 19
4.0 INSTALLATION 19
4.1 WALL AND CEILING PROTECTION 19
4.2.1 HORIZONTAL INSTALLATION 20
4.2.2 VERTICAL INSTALLATION 20
4.3 USING RIGID VENT COMPONENTS 21
4.4 HORIZONTAL AIR TERMINAL INSTALLATION 21
4.5 EXTENDED HORIZONTAL AND CORNER TERMINAL INSTALLATION 22
4.6 VERTICAL AIR TERMINAL INSTALLATION 22
4.7 USING FLEXIBLE VENTING 23
4.8 MOBILE HOME INSTALLATION 23
4.9 GAS INSTALLATION 24
5.0 FRAMING 25
5.1 MINIMUM CLEARANCE TO COMBUSTIBLE ENCLOSURES 28
5.2 ALCOVE ENCLOSURE 30
5.3 MINIMUM MANTEL CLEARANCES 31
6.0 FINISHING 32
6.1 DOOR REMOVAL / INSTALLATION 32
6.2 LOGO PLACEMENT 33
6.3 TRIM INSTALLATION 33
6.4 GLASS EMBERS 34
7.0 OPTIONAL BLOWER INSTALLATION 35
7.1 ACCESSING THE BLOWER 35
7.1.1 BURNER REMOVAL 35
7.1.2 VALVE TRAIN ASSEMBLY 36
7.2 INSTALLING THE BLOWER 37
8.0 ELECTRICAL CONNECTION 38
8.1 HARD WIRING CONNECTION 39
8.2 RECEPTACLE WIRING DIAGRAM 39
8.3 WIRING DIAGRAM 40
9.0 OPERATING INSTRUCTIONS 41
9.1 OPERATING INSTRUCTIONS - FOR YOUR SAFETY READ BEFORE OPERATING 41
9.2 LIGHTING INSTRUCTIONS 41
9.3 ANTI CONDENSATION SWITCH (OPTIONAL) 42
10.0 ADJUSTMENT 42
10.1 PILOT BURNER ADJUSTMENT 42
10.2 VENTURI ADJUSTMENT 42
10.3 FLAME CHARACTERISTICS 43
11.0 MAINTENANCE 44
11.1 GLASS / DOOR REPLACEMENT 45
11.2 CARE OF GLASS 45
11.3 CARE OF PLATED PARTS 46
11.4 VALVE REMOVAL 46
11.5 RESTRICTING VERTICAL VENTS 46
12.0 REPLACEMENTS 47
13.0 TROUBLESHOOTING 51
14.0 WARRANTY 54
15.0 SERVICE HISTORY 55
NOTE: Changes, other than editorial, are denoted by a vertical line in the margin.
W415-0895 / C / 03.13.12
1.0 INSTALLATION OVERVIEW
3
Mantel, see
“MINIMUM
MANTEL
CLEARANCES”
section.
Framing, see
“FRAMING”
section.
Side Wall
Enclosures, see the section “MINIMUM
CLEARANCES TO COMBUSTIBLE
ENCLOSURES” section for drywall (or
other combustible material).
Venting, see
“VENTING” section.
Framing, see
“FRAMING”
section.
Enclosures, see
the section
“MINIMUM
CLEARANCE TO
COMBUSTIBLE
ENCLOSURES”
section for
non-combustible
materials such as
tile, marble,
granite, etc.
Rating plate, see “RATING
PLATE INFORMATION”
section.
W415-0895 / C / 03.13.12
4
2.0 INTRODUCTION
• THIS APPLIANCE IS HOT WHEN OPERATED AND CAN CAUSE SEVERE BURNS IF CONTACTED.
• ANY CHANGES OR ALTERATIONS TO THIS APPLIANCE OR ITS CONTROLS CAN BE DANGEROUS
AND IS PROHIBITED.
• Do not operate appliance before reading and understanding operating instructions. Failure to operate
appliance according to operating instructions could cause fi re or injury.
• Risk of fi re or asphyxiation do not operate appliance with fi xed glass removed.
• Do not connect 110 volts to the control valve.
• Risk of burns. The appliance should be turned off and cooled before servicing.
• Do not install damaged, incomplete or substitute components.
• Risk of cuts and abrasions. Wear protective gloves and safety glasses during installation. Sheet metal edges
may be sharp.
• Do not burn wood or other materials in this appliance.
• Children and adults should be alerted to the hazards of high surface temperature and should stay away to
avoid burns or clothing ignition.
• Young children should be carefully supervised when they are in the same room as the appliance. Toddlers,
young children and others may be susceptible to accidental contact burns. A physical barrier is recommended
if there are at risk individuals in the house. To restrict access to an appliance, install an adjustable safety gate
to keep toddlers, young children and other at risk individuals out of the room and away from hot surfaces.
• Clothing or other fl ammable material should not be placed on or near the appliance.
• Due to high temperatures, the appliance should be located out of traffi c and away from furniture and draperies.
• Ensure you have incorporated adequate safety measure to protect infants/toddlers from touching hot surfaces.
• Even after the appliance is out, the glass and/or screen will remain hot for an extended period of time.
• Check with your local hearth specialty dealer for safety screens and hearth guards to protect children from hot
surfaces. These screens and guards must be fastened to the fl oor.
• Any safety screen or guard removed for servicing must be replaced prior to operating the appliance.
• The appliance is a vented gas-fi red appliance. Do not burn wood or other materials in the appliance
• It is imperative that the control compartments, burners and circulating blower and its passageway in the
appliance and venting system are kept clean. The appliance and its venting system should be inspected
before use and at least annually by a qualifi ed service person. More frequent cleaning may be required due
to excessive lint from carpeting, bedding material, etc. The appliance area must be kept clear and free from
combustible materials, gasoline and other fl ammable vapors and liquids.
• Under no circumstances should this appliance be modifi ed.
• This appliance must not be connected to a chimney fl ue pipe serving a separate solid fuel burning appliance.
• Do not use this appliance if any part has been under water. Immediately call a qualifi ed service technician to
inspect the appliance and to replace any part of the control system and any gas control which has been under
water.
• Do not operate the appliance with the glass door removed, cracked or broken. Replacement of the glass
should be done by a licensed or qualifi ed service person.
• Do not strike or slam shut the appliance glass door.
• When equipped with pressure relief doors, they must be kept closed while the appliance is operating to
prevent exhaust fumes containing carbon monoxide, from entering into the home. Temperatures of the exhaust
escaping through these openings can also cause the surrounding combustible materials to overheat and catch
fi re.
• Only doors / optional fronts certifi ed with the appliance are to be installed on the appliance.
• Keep the packaging material out of reach of children and dispose of the material in a safe manner. As with all
plastic bags, these are not toys and should be kept away from children and infants.
• As with any combustion appliance, we recommend having your appliance regularly inspected and serviced as
well as having a Carbon Monoxide Detector installed in the same area to defend you and your family against
Carbon Monoxide.
• Ensure clearances to combustibles are maintained when building a mantel or shelves above the appliance.
Elevated temperatures on the wall or in the air above the appliance can cause melting, discolouration or
damage of decorations, a T.V. or other electronic components.
!
WARNING
W415-0895 / C / 03.13.12
3.2B
2.1 DIMENSIONS
5
10 1/8”
34 1/16”
7”
4”
46 1/4”
42”
1”
39 5/16”
18 7/8”
40 13/16”
19 7/8”
25
5
/16”
17
13
7 ½”
/16”
1 3/8”
GAS
INLET
4 3/4”
ELECTRICAL
INLET ON
LEFT SIDE
40 13/16”
39 3/16”
37 13/16”
W415-0895 / C / 03.13.12
6
A
A
2.2 GENERAL INSTRUCTIONS
ALWAYS LIGHT THE PILOT WHETHER FOR THE FIRST TIME OR IF THE GAS SUPPLY HAS RUN OUT,
WITH THE GLASS DOOR OPENED OR REMOVED.
PROVIDE ADEQUATE CLEARANCE FOR SERVICING AND OPERATING THE APPLIANCE.
NEVER OBSTRUCT THE FRONT OPENING OF THE APPLIANCE.
OBJECTS PLACED IN FRONT OF THE APPLIANCE MUST BE KEPT A MINIMUM OF 48” FROM THE
SURFACES AROUND AND ESPECIALLY ABOVE THE APPLIANCE CAN BECOME HOT. AVOID CONTACT
WHEN THE APPLIANCE IS OPERATING.
HIGH PRESSURE WILL DAMAGE VALVE. DISCONNECT GAS SUPPLY PIPING BEFORE PRESSURE TESTING GAS
LINE AT TEST PRESSURES ABOVE 1/2 PSIG. CLOSE THE MANUAL SHUT-OFF VALVE BEFORE PRESSURE
TESTING GAS LINE AT TEST PRESSURES EQUAL TO OR LESS THAN 1/2 PSIG.
USE ONLY WOLF STEEL APPROVED OPTIONAL ACCESSORIES AND REPLACEMENT PARTS WITH THIS APPLIANCE.
USING NON-LISTED ACCESSORIES (BLOWERS, DOORS, LOUVRES, TRIMS, GAS COMPONENTS, VENTING
COMPONENTS, ETC.) COULD RESULT IN A SAFETY HAZARD AND WILL VOID THE WARRANTY AND CERTIFICATION.
!
WARNING
PROVIDE ADEQUA TE VENTILA TION.
FRONT FACE OF THE APPLIANCE.
FIRE RISK. EXPLOSION HAZARD.
THIS GAS APPLIANCE SHOULD BE INSTALLED AND SERVICED BY A QUALIFIED INSTALLER to
conform with local codes. Installation practices vary from region to region and it is important to know the
specifi cs that apply to your area, for example in Massachusetts State:
• This product must be installed by a licensed plumber or gas fi tter when installed within the commonwealth
of Massachusetts.
• The appliance damper must be removed or welded in the open position prior to installation of a appliance
insert or gas log.
• The appliance off valve must be a “T” handle gas cock.
• The fl exible connector must not be longer than 36 inches.
• A Carbon Monoxide detector is required in all rooms containing gas fi red appliances.
• The appliance is not approved for installation in a bedroom or bathroom unless the unit is a direct vent
sealed combustion product.
The installation must conform with local codes or, in
absence of local codes, the National Gas and Propane
Installation Code CSA B149.1 in Canada, or the National
Fuel Gas Code, ANSI Z223.1 / 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
NSI Z223.1 and NFPA 54 in the United States.
s long as the required clearance to combustibles is
maintained, the most desirable and benefi cial location
for an appliance is in the center of a building, thereby
allowing the most effi cient use of the heat created. The location of windows, doors and the traffi c fl ow in the
room where the appliance is to be located should be considered. If possible, you should choose a location
where the vent will pass through the house without cutting a fl oor or roof joist.
www.ncertied.org
We suggest that our gas
hearth products be installed
and serviced by professionals
who are certied in the U.S.
by the National Fireplace
®
Institute
(NFI) as NFI Gas
Specialists
If the appliance is installed directly on carpeting, vinyl tile or other combustible material other than wood
fl ooring, the appliance shall be installed on a metal or wood panel extending the full width and depth.
Some appliances have optional fans or blowers. If an optional fan or blower is installed, the junction box must
be electrically connected and grounded in accordance with 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.
4.1A
W415-0895 / C / 03.13.12
2.3 GENERAL INFORMATION
FOR YOUR SATISFACTION, THIS APPLIANCE HAS BEEN TEST-FIRED TO ASSURE ITS OPERATION AND
QUALITY!
Altitude (FT)0-4,5000-4500
Max. Input (BTU/HR)24,00024,000
Max. Output Steady State (BTU/HR)17,28017,280
Effi ciency (w/the fan on)72%72%
Min. Inlet Gas Supply Pressure4.5" Water Column11" Water Column
Max. Inlet Gas Supply Pressure7" Water Column13" Water Column
Manifold Pressure (Under Flow Conditions)3.5" Water Column10" Water Column
When the appliance is installed at elevations above 4,500ft, and in the absence of specifi c recommendations from the
local authority having jurisdiction, the certifi ed high altitude input rating shall be reduced at the rate of 4% for each ad-
ditional 1,000ft.
This appliance is approved for bathroom, bedroom and bed-sitting room installations and is certifi ed for mobile home
installation.
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 certifi ed kit is used.
Expansion / contraction noises during heating up and cooling down cycles are normal and are to be expected.
NOTE: The protective wrap on plated parts is best removed when the assembly is at room temperature but this
can be improved if the assembly is warmed, using a hair dryer or similar heat source.
DIRECT VENT GAS FIREPLACE HEATER. APPROVED FOR BEDROOM, BATHROOM AND BED-SITTING
ROOM INSTALLATION. SUITABLE FOR MOBILE HOME INSTALLATION IF INSTALLED IN ACCORDANCE
WITH THE CURRENT STANDARD CAN/CSA Z240MH SERIES GAS EQUIPPED MOBILE HOMES,
IN CANADA OR IN THE UNITED STATES THE MANUFACTURED HOME CONSTRUCTION AND
EXTENSIONS PLUS GRANDES.
SEE OWNER'S INSTRUCTION MANUAL FOR MINIMUM AND MAXIMUM VENT LENGTHS.
REFERER AU MANUEL D'INSTALLATION DE PROPRIETAIRE POUR LES LONGUEURS
D'EVACUATION MINIMALE ET MAXIMALE.
AVEC CET APPAREIL. UTILISER AVEC LES PORTES
VITRÉES HOMOLOGUÉES SEULEMENT AVEC CETTE UNITÉ.
INSTALLER: It is your responsibility to check off the appropriate box on the rating plate according to
the model, venting and gas type of the appliance.
For rating plate location, see “INSTALLATION OVERVIEW” section.
This illustration is for reference only. Refer to the rating plate on the appliance for accurate information.
VIGUER.
W385-0497 / D
3.0 VENTING
RISK OF FIRE, MAINTAIN SPECIFIED AIR SPACE CLEARANCES TO VENT PIPE AND APPLIANCE.
IF VENTING IS INCLUDED WITH SPACERS THE VENT SYSTEM MUST BE SUPPORTED EVERY 3 FEET
FOR BOTH VERTICAL AND HORIZONTAL RUNS. USE SUPPORTS OR EQUIVALENT
NON-COMBUSTIBLE STRAPPING TO MAINTAIN THE REQUIRED CLEARANCE FROM
COMBUSTIBLES. USE WOLF STEEL LTD. SUPPORT RING ASSEMBLY W010-0370 OR EQUIVALENT
NON-COMBUSTIBLE STRAPPING TO MAINTAIN THE MINIMUM CLEARANCE TO COMBUSTIBLES
FOR BOTH VERTICAL AND HORIZONTAL RUNS. SPACERS ARE ATTACHED TO THE INNER PIPE AT
PREDETERMINED INTERVALS TO MAINTAIN AN EVEN AIR GAP TO THE OUTER PIPE. THIS GAP IS
REQUIRED FOR SAFE OPERATION. A SPACER IS REQUIRED AT THE START, MIDDLE AND END OF
EACH ELBOW TO ENSURE THIS GAP IS MAINTAINED. THESE SPACERS MUST NOT BE REMOVED.
THIS APPLIANCE USES A 4” EXHAUST / 7” AIR INTAKE VENT PIPE SYSTEM.
For safe and proper operation of the appliance follow the venting instruction exactly. Deviation from the
minimum vertical vent length can create diffi culty in burner start-up and/or carboning. Under extreme vent
confi gurations, allow several minutes (5-15) for the fl ame to stabilize after ignition. Provide a means for
visually checking the vent connection to the appliance after the appliance is installed. Use a fi restop, vent pipe
shield or attic insulation shield when penetrating interior walls, fl oor or ceiling.
NOTE: If for any reason the vent air intake system is disassembled; reinstall per the instructions
provided for the initial installation.
!
WARNING
Refer to the section applicable to your installation.
7.1A
W415-0895 / C / 03.13.12
9
3.1 VENTING LENGTHS AND COMPONENTS FOR DIRECT VENT INSTALLATIONS
NOTE: There MUST be a 25% reduction in total horizontal length (HT) when using fl ex vent.
Use only Wolf Steel, Simpson Dura-Vent, Selkirk Direct Temp, American Metal Amerivent or Metal-Fab 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, American Metal Amerivent and Metal-Fab follow the installation procedure provided with the venting components.
A starter adaptor must be used with the following vent systems and may be purchased from the corresponding supplier:
For Simpson Dura-Vent, Selkirk Direct Temp, American Metal Amerivent and Metal-Fab follow the installation
procedure found on the website for your venting supplier.
For vent systems that provide seals on the inner exhaust fl ue, only the outer air intake joints must be sealed using a red
high temperature silicone (RTV). This same sealant may be 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 appliance fl ue collar which must
be sealed using the black high temperature sealant Mill Pac. High temperature sealant must be ordered separately.
When using Wolf Steel venting components, use only approved Wolf Steel rigid / fl exible components with the following
termination kits: wall terminal kit GD222, GD222R, or 1/12 to 7/12 pitch roof terminal kit GD110, 8/12 to 12/12 roof terminal
kit GD111, fl at roof terminal kit GD112 or periscope kit GD201 (for wall penetration below grade). With fl exible venting, in
conjunction with the various terminations, use either the 5 foot vent kit GD220 or the 10 foot vent kit GD330.
For optimum flame appearance and appliance 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.
Rigid and fl exible venting systems must not be combined. Different venting manufacturer components must not
be combined.
These vent kits allow for either horizontal or vertical venting of the appliance. The maximum allowable horizontal run is 20
feet. The maximum allowable vertical vent length is 40 feet. The maximum number of vent connections is two horizontally
or three vertically (excluding the appliance and the air terminal connections) when using fl exible venting.
8.1
W415-0895 / C / 03.13.12
10
3.2 TYPICAL VENT INSTALLATIONS
NOTE: There MUST be a 25% reduction in total horizontal length (HT) when using fl ex vent.
16” MINIMUM
18” MAXIMUM
(FLEX VENT)
24” MAXIMUM
(RIGID VENT)
8” MINIMUM
37 13/16”
* See “VENTING” section.
45 13/16”
MINIMUM
PLUS
RISE*
40 FEET
MAXIMUM
3 FEET
MINIMUM
37 13/16”
W415-0895 / C / 03.13.12
3.3 SPECIAL VENT INSTALLATIONS
3.3.1 PERISCOPE TERMINATION
Use the periscope kit to locate the air termination above grade. The periscope must
be installed so that when fi nal grading is completed, the bottom air slot is located a
minimum 12” above grade. The maximum allowable vent length is 10’ for a
fi replace and 8’ for a stove.
NOTE: There MUST be a 25% reduction in total
horizontal length (HT) when using fl ex vent.
11
12”
MIN TO
GRADE
24” MINIMUM
40 13/16”
3.3.2 CORNER TERMINATION
The maximum vent length for a corner installation is 24” of horizontal run
with a minimum 8” rise.
9.1A
24”
MAX
W415-0895 / C / 03.13.12
12
3.4 VENT TERMINAL CLEARANCES
COVERED BALCONY APPLICATIONS ††*
Q
S
R
G
P
INSTALLATIONS
CANADAU.S.A.
Q
R
R
MIN
MAX
MAX
= 3 feet
= 2 x
Q
feet
ACTUAL
A12”12”Clearance above grade, veranda porch, deck or balcony.
B12”
Δ
Δ
9”
Clearance to windows or doors that open.
C12” *12” *Clearance to permanently closed windows.
D18” **18” **
Vertical clearance to ventilated soffi ts located above the terminal within a horizontal distance of 2’ from
the center line of the terminal.
E12” **12” **Clearance to unventilated soffi t.
F0”0”Clearance to an outside corner wall.
G
H3’3’ ****
0” ***0” ***Clearance to an inside non-combustible corner wall or protruding non-combustible obstructions (chimney, etc.).
2” ***2” ***Clearance to an inside combustible corner wall or protruding combustible obstructions (vent chase, etc.).
Clearance to each side of the center line extended above the meter / regulator assembly to a maximum
vertical distance of 15’.
I3’3’ ****Clearance to a service regulator vent outlet.
J12”9”Clearance to a non-mechanical air supply inlet to the building or a combustion air inlet to any other appliance.
K6’3’ †Clearance to a mechanical air supply inlet.
L7’ ‡7’ ****Clearance above a paved sidewalk or paved driveway located on public property.
M12” ††12” ****Clearance under a veranda, porch or deck.
N16”16”Clearance above the roof.
O2’ †*2’ †*Clearance from an adjacent wall including neighbouring buildings.
P8’8’Roof must be non-combustible without openings.
Q3’3’See chart for wider wall dimensions.
R6’6’
See chart for deeper wall dimensions. The terminal shall not be installed on any wall that has an opening between the terminal and the open side of the structure.
S12”12”Clearance under a covered balcony
The terminal shall not be located less than 6 feet under a window that opens on a horizontal plane in a structure with three walls and a roof.
Δ
*Recommended to prevent condensation on windows and thermal breakage
**It is recommended to use a heat shield and to maximize the distance to vinyl clad soffi ts.
***The periscope requires a minimum 18 inches clearance from an inside corner.
****This is a recommended distance. For additional requirements check local codes.
†3 feet above if within 10 feet horizontally.
‡A vent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces.
††Permitted only if the veranda, porch, or deck is fully open on a minimum of two sides beneath the fl oor.
†*Recommended to prevent recirculation of exhaust products. For additional requirements check local codes.
††*Permitted only if the balcony is fully open on a minimum of one side.
NOTE: Clearances are in accordance with local installation codes and the requirements of the gas supplier.
W415-0895 / C / 03.13.12
12.1C
3.5 VENT APPLICATION FLOW CHART
13
Horizontal Termination
Vertical rise is equal
to or greater than
the horizontal run
Horizontal run +
vertical rise to
maximum of 40 feet
3.6 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
HT - total of both horizontal vent lengths (Hr) and offsets (Ho) in feet
HR - combined horizontal vent lengths in feet
HO - offset factor: .03 (total degrees of offset - 90°*) in feet
VT - combined vertical vent lengths in feet
Since both formulas are met, this vent configuration is acceptable.
16.8
W415-0895 / C / 03.13.12
16
3.9 VERTICAL TERMINATION
NOTE: There MUST be a 25% reduction in total horizontal length (HT) when using fl ex vent.
(HT) < (VT)
Simple venting configurations.
See graph to determine the required vertical rise V
required horizontal run HT.
40
30
REQUIRED
VERTICAL
20
RISE IN
FEET V
T
10
3
0
5101520
HORIZONTAL VENT RUN PLUS OFFSET IN FEET H
The shaded area within the lines represents acceptable
values for HT and VT
For vent configurations requiring one or more 90° elbows the following formulas apply:
Formula 1: H
Formula 2: HT + V
< V
T
T
< 40 feet
T
for the
T
T
Example:
V
= 5 FT
1
V
= 6 FT
2
V
= 10 FT
3
V
= V
+ V2 + V3 = 5 + 6 + 10 = 21 FT
T
1
H
= 8 FT
1
H
= 2.5 FT
2
H
= H
+ H
R
H
= .03 (four 90° elbows - 90°)
O
= .03 (360° - 90°) = 8.1 FT
= H
H
T
H
+ V
T
Formula 1: HT < V
18.6 < 21
Formula 2: HT + V
39.6 < 40
= 8 + 2.5 = 10.5 FT
1
2
+ H
= 10.5 + 8.1 = 18.6 FT
R
O
= 18.6 + 21 = 39.6 FT
T
T
< 40 FT
T
Since both formulas are met, this vent configuration is acceptable.
90°
V
3
90°
H
2
V
H
1
V
1
2
90°
90°
18.1
W415-0895 / C / 03.13.12
NOTE: There MUST be a 25% reduction in total horizontal length (HT) when using fl ex vent.
17
(HT) > (VT)
Simple venting configurations.
See graph to determine the required vertical rise V
required horizontal run HT.
20
19
REQUIRED
VERTICAL
RISE IN
FEET V
10
T
3
0
5101520
HORIZONTAL VENT RUN PLUS OFFSET IN FEET H
The shaded area within the lines represents acceptable
values for HT and VT
For vent configurations requiring more than two 90° elbows the following formulas apply:
Formula 1: H
Formula 2: HT + V
< 3V
T
T
< 40 feet
T
Example:
V
= 2 FT
1
V
= 1 FT
2
V
= 1.5 FT
3
V
= V
+ V2 + V3 = 2 + 1 + 1.5 = 4.5 FT
T
1
H
= 6 FT
1
H
= 2 FT
2
H
= H
+ H
R
H
= .03 (four 90° elbows - 90°)
O
= .03 (360° - 90°) = 8.1 FT
H
= H
T
H
+ V
T
= 6 + 2 = 8 FT
1
2
+ H
= 8 + 8.1 = 16.1 FT
R
O
= 16.1 + 4.5 = 20.6 FT
T
90°
H
V
1
1
90°
for the
T
2530
T
V
H
2
V
2
3
90°
90°
Formula 1: HT < 3V
3VT = 3 x 4.5 = 13.5 FT
T
16.1 > 13.5Since this formula is not met, this vent configuration is unacceptable.
Formula 2: HT + VT < 40 feet
20.6 < 40
Since only formula 2 is met, this vent configuration is unacceptable and a new appliance location or vent configuration will
need to be established to satisfy both formulas.
18.1_2A
NOTE: All vent parameters are stated for rigid venting. If using approved Wolf Steel Ltd. fl exible vent-
ing then maximum horizontal requirements are reduced by 25%.
W415-0895 / C / 03.13.12
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