Enviro Westport C-10794 User manual

SHERWOOD INDUSTRIES IS AN ENVIRONMENTALLY RESPONSIBLE COMPANY. THIS MANUAL IS PRINTED ON RECYCLED PAPER.
BY: SHERWOOD INDUSTRIES LTD
OWNER’S MANUAL
PLEASE KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE
50-1033
Westport
This appliance may be installed in an after-market
permanently located, manufactured (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
certied kit is used.
WHAT TO DO IF YOU SMELL GAS
• Open windows/extinguish any open
ame.
• Do not try to light any appliance.
• Do not touch any electrical switch or
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 re department.
WARNING
If the information in this manual
is not followed exactly, a re or
explosion may result causing property
damage, personal injury or loss of
life. Installation and service must be
performed by a qualied installer,
service agency or the gas supplier.
FOR YOUR SAFETY
Do not store or use gasoline or other
ammable vapours and liquids in the
vicinity of this or any other appliance.
Massachusetts installations (Warning): This product must be installed by a licensed
plumber or gas tter when installed within the Commonwealth of Massachusetts.
Other Massachusetts code requirements: Flexible connector must not be longer than
36in, shut-off valve must be a “T” handle gas cock; only direct vent sealed combustion
products are approved for bedrooms/bathrooms; replace dampers must be removed
or welded in the open position prior to the installation of a replace insert or gas log.

2
FOR SAFE INSTALLATION AND OPERATION OF YOUR “ENVIRO” HEATER,
PLEASE CAREFULLY READ THE FOLLOWING INFORMATION:
• All ENVIRO gas-red appliances must be installed
in accordance with their instructions. Carefully read all
the instructions in this manual rst. Consult the building
authority having jurisdiction to determine the need for
a permit prior to commencing the installation.
• NOTE: Failure to follow these instructions could
cause a malfunction of the replace, which could
result in death, serious bodily injury, and/or property
damage.
• Failure to follow these instructions may also void
your re insurance and/or warranty.
GENERAL
• Installation and repair should be done by a
qualied service person. The appliance should be
inspected before the rst use and, at least, annually
by a qualied service person. More frequent
cleaning may be required due to excessive lint from
carpeting, bedding material, etc. It is imperative the
control compartments, burners and circulating air
passageways of the appliance be kept clean.
• Due to high temperatures, the appliance should
be located out of high trafc areas and away from
furniture and draperies.
Children and adults should be alerted to the
hazards of high surface temperatures and
should stay away to avoid burn or clothing
ignition.
• Young children should be carefully supervised
when in the same room as the appliance.
• Clothing or other ammable materials should not
be placed on or near the appliance.
FOR YOUR SAFETY
• Installation and service must be performed by a
qualied installer, service agency or gas supplier.
• This installation must conform to local codes or, in
the absence of local codes, to the current CAN/CGA-
B149 installation code (Canada) or National Fuel Gas
Code ANSI Z223.1.2 (USA)
• To prevent injury, do not allow anyone who is
unfamiliar with the stove to operate it.
• To prevent injury, if the pilot or pilot and
burners have gone out on their own, open the
glass door and wait 5 minutes to air out before
attempting to re-light the stove.
• Always keep the area around these appliances
clear of combustible material, gasoline and other
ammable liquids and vapours.
• These appliances should not be used as a drying
rack for clothing or for hanging Christmas stockings/
decorations.
• Due to the paint curing on the stove, a faint odor
and slight smoking will likely be noticed when the
stove is rst used. Open a window until the smoking
stops.
Always connect this gas stove to a vent system and
vent to the outside of the building envelope. Never
vent to another room or inside the building. Make sure
the specied vent pipe is used, properly sized and of
adequate height to provide sufcient draft. Inspect
the venting system annually for blockage and signs of
deterioration.
WARNING: Failure to position the parts in accordance
with the diagrams in this booklet, or failure to use only
parts specically approved with this appliance, may
result in property damage or personal injury.
WARNING: Do not operate with the glass front
removed, cracked or broken. Replacement of the
glass should be done by a licensed or qualied service
person.
• Never use solid fuels such as wood, paper,
cardboard, coal, or any ammable liquids, etc., in this
appliance.
• Do not use this heater if any part has been under
water. Immediately call a qualied service technician
to inspect the heater and to replace any part of the
control or gas control systems that have been under
water.
• Do not abuse the glass by striking it or slamming
the door shut.
Safety Precautions

Table of Contents
3
Safety Precautions.....................................................................................................2
Table of Contents......................................................................................................3
Codes And Approvals.................................................................................................4
Specications............................................................................................................5
Dimensions....................................................................................................5
Clearances to Combustibles.............................................................................5
Operating Instructions...............................................................................................6
Pilot Lighting Instructions................................................................................6
Pilot Light......................................................................................................7
Air Shutter......................................................................................................7
Maintenance And Service...........................................................................................8
Routine Maintenance......................................................................................8
Cleaning The Glass.........................................................................................8
Cleaning The Firebox......................................................................................8
Change Battery in Ignition Module...................................................................8
Replacing the Glass........................................................................................9
Opening The Door..........................................................................................9
Fuel Conversion............................................................................................10
Initial Installation....................................................................................................12
Vent Termination Restrictions........................................................................12
Vent Parts....................................................................................................13
Vent Congurations and Restrictor Settings....................................................13
Planning Your Installation..............................................................................15
Horizontal Installation...................................................................................16
Corner Installations.......................................................................................18
Vertical Installation.......................................................................................19
Cathedral Ceiling Installation.........................................................................21
Freestanding Direct Vent Kit With Coupler.......................................................22
Venting into a Class ‘A’ Chimney.....................................................................25
Converting Top Vented into Rear Vented.........................................................26
Installation of Rear Vented Appliance.............................................................26
Installation of Top Vented; Horizontal Termination...........................................27
Installation of Top Vented; Vertical Termination...............................................27
Freestanding Drafthood Adaptor.....................................................................28
Gas Line Connection and Testing...................................................................31
Electrical Requirements For Gas Valve and Optional Blower..............................32
Secondary Installation.............................................................................................33
Installation of Optional Blower.......................................................................33
Installation of Log Set and Embers.................................................................33
Installation of Panel Set................................................................................36
Trouble Shooting.....................................................................................................37
Parts List - Cast.......................................................................................................38
Parts Diagram - Cast................................................................................................40
Parts List - Components...........................................................................................41
Parts Diagram - Components....................................................................................43
Warranty.................................................................................................................44
Installation Data Sheet............................................................................................45

4
DIRECT VENT ONLY: This type is identied by the sux DV. This appliance draws all of its air for
combustion from outside the dwelling, through a specially designed vent pipe system.
TOP VENT DV Certied for installation from 0-4500 ft (0-1372 m)
REAR VENT DV Certied for installation from 0-4500 ft (0-1372 m) with 36” (915 mm)
snorkel (refer to ‘Converting Top Vented into Rear Vented’).
In the USA: The appliance may be installed at higher altitudes. Please refer to your American Gas
Association guidelines which state: the sea level rated input of Gas Designed Appliances installed at
elevations above 2000 (610 m) feet is to be reduced 4% for each 1000 feet (305 m) above sea level.
Refer also to local authorities or codes which have jurisdiction in your area regarding the de-rate
guidelines.
In Canada: When the appliance is installed at elevations above 4500 feet (1372 m), the certied high
altitude rating shall be reduced at the rate of 4% for each additional 1000 feet (305 m).
• This appliance has been tested by INTERTEK (Warnock Hersey) and found to comply with the
established VENTED GAS FIREPLACE HEATER standards in CANADA and the USA as follows:
VENTED GAS FIREPLACE HEATER (Westport DV; NG/LPG)
TESTED TO: ANSI Z21.88a-2003/CSA 2.33a-2003 VENTED GAS FIREPLACE HEATERS
CAN/CGA 2.17-M91 GAS FIRED APPLIANCES FOR HIGH ALTITUDES
CSA P.4.1-02 TESTING METHOD FOR MEASURING ANNUAL FIREPLACE EFFICIENCY
This ENVIRO WESTPORT Fireplace:
• Has been certied for use with either natural or propane gases. (See rating label.)
• Is not for use with solid fuels.
• Is approved for bedroom or bed sitting room. (IN CANADA: must be installed with a listed wall
thermostat. IN USA: see current ANSI Z223.1 for installation instructions.)
Codes And Approvals
• Must be installed in accordance with local codes. If none exist, use current
installation code CAN/CGA B149 in Canada or ANSI Z223.1/NFPA 54 in the
USA.
• Must be properly connected to an approved venting system and not connected
to a chimney ue serving a separate solid-fuel burning appliance.
IMPORTANT NOTICE (Regarding rst re up): When the unit is turned
on for the rst time, it should be turned onto high without the fan on for
the rst 4 hours. This will cure the paint, logs, gasket material and other
products used in the manufacturing process. It is advisable to open a
window or door, as the unit will start to smoke and can irritate some people.
After the unit has gone through the rst burn, turn the unit off including the
pilot, let the unit get cold then remove the glass door and clean it with a
good gas replace glass cleaner, available at your local ENVIRO dealer.

5
Specifications
WARNING:
Operation of this heater when not connected to a properly installed and maintained venting system can
result in carbon monoxide (CO) poisoning and possible death.
DIMENSIONS:
16 5/8"
(42.2cm)
25 "
(65.3cm)
25 "
(65.4cm)
27"
(68.6cm)
25 "
(65.3cm)
17 1/8"
(43.5cm)
15 "
(40.0cm)
27"
(68.5cm)
15 1/8"
(39.0cm)
Floor to center of flue
REAR VENT
23” (59.7 cm)
CLEARANCES TO COMBUSTIBLES:
A. Sidewall to unit 11 inches (27.9 cm)
B. Backwall to unit 2.5 inches (6.35 cm)
C. Corner to unit 2.5 inches (6.35 cm)
D. Ceiling 60 inches above oor (152.4 cm)
E. Floor (hard wood and linoleum) 0 inches
Note: When installing on a carpeted surfaces a non-
combustible hearth pad must be used.
Minimum Alcove Dimensions:
Width 48 inches (121.9 cm)
Height 60 inches (152.4 cm)
Depth (max) 24 inches (60.96 cm)
CLEARANCES MUST BE SUFFICIENT TO ALLOW ACCESS FOR MAINTENANCE AND SERVICE
Figure 1: Westport Exterior Dimensions.



 
 



 
 
Figure 2: Clearances to combustibles.

6
Operating Instructions
For Your Safety, Read Safety Precautions And
Lighting Instructions Before Operating
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY A FIRE OR EXPLOSION MAY
RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY OF LOSS OF LIFE.
PILOT LIGHTING INSTRUCTIONS:
Figure 3. Lighting Instruction Label
1. Flip burner switch to 'OFF'. 2. Turn the gas control knob clockwise to the 'OFF' position.
                                           
                        
             
                                 
CAUTION:
FOR YOUR SAFETY READ BEFORE O PERATING
LIGHT ING INSTRUCTIONS
TO T URN OFF GAS TO APPLIANCE
C-10381
FOR YOUR SAFETY: Do not operate this fireplace with the glass removed, cracked, or broken. Replacement of this glass should be installed with provisions for combustion and by a licensed or qualified person! This appliance needs fresh air for safe operation and must have ventilation air. See installation and operating instructions manual. Keep burner and control compartment clean. WARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury, or loss of life. Refer to owner's manual. Installation and service must be performed by a qualified installer, service agency or the gas supplier
HOT WHILE OPERATING. DO NOT TOUCH. KEEP CHILDREN, CLOTHING, FURNITURE, GASOLINE, OR OTHER FLAMMABLE VAPOURS AWAY.
A) This appliance is equipped with a pilot, which must be lit by hand by following
these instructions exactly.
B) BEFORE LIGHTING, smell all around the appliance area for gas and next to
the floor because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS: Do not try to light any appliances. Do not touch any electrical switch. Do not use any phone in your building. Immediately call your gas supplier from a neighbours phone. Follow the gas
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY RESULT
CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.
If you cannot reach your gas supplier, call the fire department. C) Use only your hands to push in or turn the gas control knob; NEVER
use tools. If the knob will not push in or turn by hand, do not try to repair, may result in a fire or explosion.
D) Do not use this appliance if any part has been underwater. Immediately
call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.
           
            
          
     
        
               
       
3. Turn off all electrical power to the appliance if service is to be
performed.
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7
2. Start the pilot by pressing the gas control knob and turning it to PILOT.
While holding the gas control knob in, press the piezo ignitor several times
until the pilot light starts. Hold the gas control knob in for 30 seconds.
Check that the pilot has fully engulfed the thermocouple assembly (see
Figure 4).
3. Start the main burner by turning the gas control knob to ON and then
turn the rocker switch to ON. Check that all burner ports have ame.
4. Leak test all gas joints again.
 
Figure 4. Pilot Flame
Operating Instructions
PILOT LIGHT:
1. Turn off the gas to the replace. If not recently done, remove the glass and let the unit air
out for at least ve (5) minutes to clear out any gas. Turn on gas to the heater. Leak test all joints
with soapy water. NEVER USE OPEN FLAME FOR LEAK TESTING.
AIR SHUTTER:
The air shutter is controlled with the primary air adjustment rod located behind the gas valve shown in
Figure 5.
The air shutter allows the amount of air coming into the replace to be adjusted in order to accommodate
different climates and venting arrangements. Start the pilot and then the burner. Make sure the pilot
ame is burning normally and none of the burner ports are plugged. Let the replace burn for roughly
fteen minutes and then examine the ames, compare the ames to Figure 55.
Gas valve
regulator
Gas valve
Primary air
adjustment rod
Figure 5: Gas Valve In Place on Unit.
The ideal ame will be blue at the base and light
orange above. The ames should be of medium
height. If the ames look like this, no venturi
adjustment is needed. If the ames are fairly
short and mostly blue, the replace is getting
too much air. Therefore, the air shutter should
be closed slightly until the correct ames are
achieved. Flames that are very orange, with
tall, dark, stringy tips, are not getting enough air.
Open the venturi until the ames clean up. If the
venturi is opened, or closed all the way, and the
correct ames cannot be attained, turn off the
gas and contact the dealer.
Warning: Incorrect venturi adjustment may lead to improper combustion, which is a safety hazard.
Contact the dealer if there is any concern about the venturi adjustment.

8
Electronic
ignition module
Maintenance And Service
ROUTINE MAINTENANCE:
At least once a year, run through the following procedures to ensure the system is clean and working
properly. Check the burner to see if all the ports are clear and clean. Check the pilot to make sure it is not
blocked by anything. The pilot ame should be blue with little or no yellow on the tips.
Warning: Clearances must be sufcient to allow access for maintenance and service
Warning: Failure to position the parts in accordance with this manual, or failure to use only parts
specically approved with this appliance may result in property damage or personal injury.
The venting system must be periodically examined; it is recommended the examination is done by a
qualied agency.
CLEANING THE GLASS:
When the replace has cooled, remove the face of the replace along with the glass. See MAINTENANCE
AND SERVICE - GLASS DOOR REMOVAL. Check the gasket material on the back of the glass, making sure that it
is attached and intact.
During a cold start up, condensation will sometimes form on the glass. This is a normal condition with all
replaces. However, this condensation can allow dust and lint to cling to the glass surface. Initial paint
curing of the appliance can leave a slight lm behind the glass, a temporary problem. The glass will need
cleaning about two weeks after installation. Use a mild glass cleaner and a soft cloth; abrasive
cleaners will damage the glass and plated surfaces. Depending on the amount of use, the glass
should require cleaning no more than two or three times a season. Do not clean the glass when it is
hot.
CLEANING THE FIREBOX:
Remove the logs carefully, as they are very fragile. Gently remove all the embers and rock wool and
place on a paper towel. Vacuum the bottom of the rebox thoroughly. Carefully clean any dust off the
logs and remove any lint from the burner and pilot. At this time, inspect the burner pan for cracking or
severe warping. If a problem is suspected, contact the dealer. Check the logs for deterioration or large
amounts of soot; a small amount on the bottom side of the logs is normal. Replace the logs and embers
as in the LOG SET AND EMBER INSTALLATION section. If new/more embers and rock wool are required, contact
your nearest ENVIRO dealer.
CHANGE BATTERY IN IGNITION MODULE:
If the unit does not spark when lighting, the battery in the
electronic ignition could need replacing.
Located on the left hand rear corner of the unit is a small
rectangular hole. Located here is the electronic ignition module
(see Figure 6). Remove the battery cover, located on the left side
of the module, and replace the AA battery.
Reinstall the battery cover and check for spark by depressing the
pilot knob located on the control panel. Figure 6: Electronic Ignition Module
Location.

Figure 7: Handles for Removing Door.
Figure 8: Removing of Door.
Maintenance And Service
REPLACING THE GLASS:
The glass in the replace is a high temperature ceramic. If the glass is damaged in any way, a factory
replacement is required (see PARTS LIST - COMPONENTS). Wear gloves when handling damaged glass door
assembly to prevent personal injury. When the glass door assembly is being transported, it must be
wrapped in newsprint and tape and/or a strong plastic bag. Do not operate with the glass front removed,
cracked or broken. Removal and replacement of the glass from the door must be done by a licensed or
qualied service person. The glass must be purchased from an ENVIRO dealer. No substitute
materials are allowed.
To Replace:
• Open door, and remove the glass carefully.
• Install the new piece of glass with the large bulb in the gasket tape against the unit. Place the joint in
the tape in a bottom corner. Close door.
OPENING THE DOOR:
Turn unit off and wait until the appliance has cooled down. Remove the cast iron top from the unit by lifting
straight up. Lift the two door handles located on either side of the door and lift the glass door assembly
straight up and out (see Figure 7 and 8). Carefully open the two doors and remove if necessary.
Ensure the door is properly fastened after cleaning before attempting to re-light the appliance.
9

Maintenance And Service
TO BE INSTALLED BY A QUALIFIED SERVICE AGENCY ONLY
FUEL CONVERSION:
Warning: This conversion kit shall be installed by a qualied service agency in accordance
with the manufacturer’s instructions and all applicable codes and requirements
of the authority having jurisdiction. If the information in these instructions is not
followed exactly, a re, explosion or production of carbon monoxide may result
causing property damage, personal injury or loss of life. The qualied service agency
is responsible for the proper installation of this kit. The installation is not proper or
complete until the operation of the converted appliance is checked as specied in the
manufacturer’s instructions supplied with the kit.
Please read and follow these instructions. Also, please read the instruction guidelines provided by S.I.T.
on how to remove and install the HI/LO regulator.
Step 1. Carefully inspect all parts supplied with this conversion kit.
Step 2. Shut the gas supply off at the shut-off valve. (CAUTION: The gas supply shall be shut off prior
to disconnecting the electrical power, before proceeding with the conversion.)
Step 3. Remove the glass as shown in the MAINTENANCE AND SERVICE - OPENING THE DOOR.
Using a " deep
socket remove/reinstall
the main burner orifice.
Undo the two
(2) screws that
hold burner in
the firebox.
Rotate handles
and remove the
door and glass.
Lift off the pilot
head and replace
with proper pilot
orifice for fuel type
to be used.
Venturi adjustment
bracket.
Pilot assembly moved
from firebox for clarity.
Figure 9: Unit burner shown apart.
10
Step 4. Carefully remove the log
set and ember material if
they are installed.
Step 5. Remove the two (2)
screws (located on the
outside edges of the
burner) that hold the
burner to the chassis
inside the re box, see
Figure 9. Remove the
burner tray from the
rebox.
Step 6. Change the regulator on
the front of the gas valve
(follow the instructions
provided by S.I.T.).
Step 7. To change the pilot,
simply pull the pilot hood
straight up to access the
pilot injector. Using a 5/
32 inch Allen key, remove
the pilot injector and
replace with the proper
fuel type needed.

Step 8. Install the new pilot injector supplied with this conversion kit. Simply screw the new injector
inside the pilot hood and reinstall the hood by placing the hood on the assembly, line up the
key way, and snap into place.
Step 9. Remove the main burner orice with a  inch deep socket.
Step 10. Install the new orice supplied. Be sure to put a bead of pipe-thread sealant or approved Teon
tape on the orice before installing into the burner assembly.
Step 11. Re-install burner tray, log set and door. Pay special attention when installing the burner that
the venturi adjustment rod is properly installed into the venturi adjustment piece welded to the
burner venturi tube. Also refer to SECONDARY INSTALLATION - INSTALLING LOG SET AND EMBERS.
Step 12. Open the shut-off valve at the gas line to the unit.
Step 13. Use a small brush to apply a warm soapy water solution to all gas connections (use a half
dish soap and half warm water). If a gas leak is present, bubbling will occur. Gas leaks can
be repaired by using an approved pipe thread sealant or approved Teon tape. NEVER USE A
NAKED FLAME WHEN TESTING FOR LEAKS.
Step 14. Re-light the replace to ensure proper operation and proper ame appearance, refer to Figure
55.
Step 15. MAKE SURE that the sticker provided by S.I.T. is installed, to signify that the valve has been
converted to a different fuel type. Also, make sure that the rating plate has a conversion label
to show this unit has been converted to a different fuel type.
A VISUAL CHECK OF THE REGULATOR KNOB IS NECESSARY TO DETERMINE WHETHER OR NOT THE
REGULATOR IS THE CORRECT PART. A 50% TURN DOWN REGULATOR WILL HAVE ONLY ONE CORNER
ON THE KNOB
Conversion Kit should contain the following:
(1) 50% turn down HI/LO regulator with three (3) T-20 Torx screws
(1) Pilot injector
Conversion instructions
Labels to show conversion
11
Table 1: Orice Information.
Natural Gas Propane
Pilot Orice .62 mm .35 mm
Burner Orice Top #39 DMS #53 DMS
Venturi Setting 1/16” min. 3/16” min.
Maintenance And Service

12
1 In accordance with the current CSA B149, Natural Gas and Propane Installation Code.
2 In accordance with the current ANSI Z223.1 NFPA 54, National Fuel Gas Code.
* These numbers are only estimates. Clearance in accordance with installation codes and the requirements of the gas supplier.
t A vent shall not terminate directly above a side walk or paved driveway that is located between two single family dwellings and it serves both dwellings.
+ Permitted only if verandah, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
NOTE: Venting terminals shall not be recessed into walls or siding.
Figure 10. Vent Termination Restrictions, refer to Table 2.
Initial Installation
QUALIFIED INSTALLERS ONLY
VENT TERMINATION RESTRICTIONS:
A
A
DE
LB
C
F
B
B
B
JMK
G
H
I
Openable
Fixed
Closed
Openable Fixed
Closed
Termination Cap Air Supply Inlet Gas Meter
G
G
Restriction Zone
(Termination not allowed)
N
O
Letter Canadian Installation 1US Installation2Description
A 12 in (30 cm) Clearance above grade, verandah, porch, deck, or balcony.
B 12 in (30 cm) 9 in (23 cm) Clearance from window or door that may be opened.
C 12 in (30 cm)* Clearance from permanently closed window (to prevent
condensation).
D 24 in (60 cm)* Vertical clearance to ventilated soft located above the
terminal, within a horizontal distance of 2 ft (60 cm) from
center line of terminal.
E 18 in (45 cm)* Clearance to unventilated soft.
F 12 in (30 cm)* Clearance to outside corner.
G 12 in (30 cm)* Clearance to inside corner.
H 3 ft (91 cm) within a height of
15 ft (4.5 m) above the meter/
regulator assembly
3 ft (91 cm) within a height of
15 ft (4.5 m) above the meter/
regulator assembly*
Clearance to each side of center line extended above
meter/regulator assembly.
I 3 ft (91 cm) 3 ft (91 cm)* Radial clearance around service regulator vent outlet.
J 12 in (30 cm) 9 in (23 cm) Clearance to non-mechanical air supply inlet to building, or
the combustion air inlet to any other appliance.
K 6 ft (1.83 m) 3 ft (91 cm) above if within 10
ft (3 m) horizontally
Clearance to mechanical air supply inlet.
L 7 ft (2.13 m)t 7 ft (2.13 m)*t Clearance above paved sidewalk or paved driveway located
on public property.
M 12 in / 30 cm+12 in / 30 cm*+Clearance under verandah, porch, deck, or balcony.
N 12 in (30 cm)* Clearance horizontally to any surface (such as an exterior
wall) for vertical terminations.
O 12 in (30 cm) Clearance above roof line for vertical terminations.
Table 2: Vent termination clearances, refer to Figure 10.

13
Initial Installation
QUALIFIED INSTALLERS ONLY
VENT PARTS:
This replace have been tested and certied for use with SIMPSON DURAVENT TYPE GS PIPE FOR GAS STOVES.
SELKIRK DIRECT-TEMP SYSTEM SECURITY CHIMNEY’S “SECURE VENT DIRECT VENT SYSTEM” and SELKIRK
“METALBESTOS MDV VENT SYSTEM” kits are available for horizontal venting. When using Simpson Duravent, it is
recommended that, before installation, a bead of RTV High Temperature Silicone should be applied to each outer
vent joint, and Mil-Pac to each inner joint. When planning an installation, it will be necessary to select the proper
length of vent pipe for the particular requirements.
A MINIMUM VERTICAL LENGTH OF 24” (61 cm) TO THE FIRST 90° ELBOW IS REQUIRED. WITH THIS
MINIMUM VERTICAL RISE, HORIZONTAL RUNS OF FROM 1 FT (30.5 cm) to 3 FT (91.5 cm) ARE PERMITTED TO
REACH THE OUTSIDE VENT TERMINATION.
BEFORE BEGINNING THE INSTALLATION TAKE CARE TO ENSURE AN APPROPRIATE OUTSIDE LOCATION FOR THE
VENT TERMINATION CAN BE ACCOMMODATED. FOLLOW THE VENT LENGTH DIAGRAM PRECISELY.
VENTING TERMINALS CANNOT BE RECESSED INTO A WALL OR SIDING.
If extra elbows are being used, overall allowable length will be reduced by 3 ft (91.5 cm) per
additional elbow.
VENT CONFIGURATIONS AND RESTRICTOR SETTINGS:
Figures 12 shows the range of venting options, it shows possible vent congurations if the unit is top
vented, for vertical and horizontal terminations, any layout that remains within the shaded area is
acceptable. Having the fewest number of elbows is ideal, as they tend to disrupt air movement. Using
45˚ elbows is preferable to using 90˚ elbows. Also, a shorter vent system will perform better than a
longer one.
Simpson Duravent (SD), Selkirk (SEL), and Security Chimneys (SC), must state if galvanized or black wanted, PART NUMBERS:
SD SEL SC Description SD SEL SC Description
908 4DT-6 SV4L6 6” pipe length 911 11” to 14 5/8” pipe, adjustable
907 4DT-9 9” pipe length 4DT-AJ 4” to 10” pipe , adjustable
906 4DT-12 SV4L12 12” pipe length SV4LA12 1” to 12” pipe , adjustable
904 4DT-24 SV4L24 24” pipe length 943 4DT-AF6 Flashing, 0/12 to 6/12 roof pitch
903 4DT-36 SV4L36 36” pipe length 943S 4DT-AF12 Flashing, 7/12 to 12/12 roof pitch
902 4DT-48 SV4L48 48” pipe length SV4FA Flashing, 1/12 to 7/12 roof pitch
945 4DT-EL45 SV4EBR45 45° elbow, black SV4FB Flashing, 8/12 to 12/12 roof pitch
990 4DT-EL90 SV4EBR90 90° elbow, black 943F SV4F Flat ashing
950 4DT-VS SV4VS Vinyl siding standoff/sheild 980 4DT-VC SV4CGV Vertical termination
942 4DT-WT SV4RSN Wall thimble 991 4DT-HVC High wind vertical termination
941 4DT-CSS SV4CSB Cathedral Support Box 984 4DT-HC SV4CHC Horizontal square termination
981 4DT-ST36 SV4STC36 36” Snorkel Termination 985 4DT-HHC High wind horizontal termination
953 4DT-SC SV4FC Storm collar 978 4DT-VKC SV0FAK Vertical termination kit
963 4DT-FS SV4BF Fire stop 970 4DT-HKA SV0SHK Horizontal termination kit
SD: Basic Kit, SEL: Kit A, SC: Standard Kit
988 4DT-WS/B SV4BM Wall strap/support/band
971 4DT-HKB SV0SHK2 Horizontal termination kit
SD: Kit A, SEL: Kit B, SC: Kit
Table 3: Vent Pipe Types with Part Numbers.

V
e
n
t
R
e
s
t
r
i
c
t
o
r
P
o
s
i
t
i
o
n
s
5
4
3
2
1
0’
(0 m)
0’
(0 m)
5’
(1.52 m)
5’
(1.52 m)
10’
(3.05 m)
10’
(3.05 m)
15’
(4.57 m)
15’
(4.57 m)
20’
(6.10 m)
25’
(7.62 m)
30’
(9.14 m)
18’
(5.49 m)
1
2
3
4
5
  
  
  
  
1
2
3
4
5
Figure 11: Restrictor plate settings.
Initial Installation
QUALIFIED INSTALLERS ONLY
Figure 12. Possible Vent Congurations for Top Vented;
Vertical and Horizontal Terminations.
The ENVIRO WESTPORT has been designed with a
built in restrictor plate. The restrictor is designed to
enhance ame appearance when installing this unit
with vertical chimneys as well as installations with
longer horizontal vent applications. It does this by
controlling the amount of air moving through the vent
pipe.
Figure 12 shows the vent restrictor position required,
relative to the length of vent pipe. Longer vertical
vent lengths necessitate greater restriction; position
1 is open and position 5 is maximum restriction (refer
to Figure 11). To avoid injury, it is best to make this
adjustment when the replace is cool or use welder’s
gloves or oven mitts.
NOTE: The total length of the vent pipes can not exceed
30 feet (9.14 m). Any combination of rise and run can be
used as long as it lays within the shaded area (a total
of three (3) 90° elbows or six (6) 45° elbows can
be used). In addition to what is shown, if a 90°
elbow is used in the horizontal plane, 3 feet
(91.4 cm) must be subtracted from the
allowable horizontal run (for each 45°
elbow, 1 feet must be subtracted
from the allowable horizontal
run).
To access vent restrictor remove the valve
cover plate from the right rear corner of
the unit by undoing the two fastening
screws.
Loosen the ” hex head bolt and adjust to
the correct setting.
Slide the hex head bolt to the next setting
and re-tighten the bolt to secure in place.
The numbers in this chart represent the
actual vent restrictor settings. Although
the numbers do not appear on the unit use
this as a guide to follow.
Undo the setscrew and adjust the restrictor
to the correct setting.
Ensure that the setscrew is re tightened and
the unit is checked for proper operation.
Wait for unit to warm up to operating
temperature to ensure proper and clean
burning unit.
Note: 0,0 in Figure 12 represents a 90˚
bend directly off the outlet of the unit, in
all horizontal instances except when using
Selkirk and having less than a 4 ft (1.22 m)
rise and 8 ft (2.44 m) horizontal offset. In
this case, a 1 foot (30.5 cm) rise must be
added below the 90˚ bend.
14

15
Initial Installation
QUALIFIED INSTALLERS ONLY
PLANNING YOUR INSTALLATION:
When planning your installation, it will be necessary to select the proper length of vent pipe for your
particular requirements. It is important to note when passing through a wall, the maximum allowable
wall thickness is 10 inches (25.4 cm), 1 inches (3.8 cm) clearance to combustibles must be maintained.
Select the amount of vertical rise desired for “vertical-to-horizontal” type installations. To determine
the length of vent pipe required for vertical installations, measure the distance from the appliance ue
outlet to the ceiling, the ceiling thickness, the vertical rise through the attic or second story, and allow
Vertical
Termination
Storm Collar
Flashing
Round Support
Box/Wall Thimble
Ceiling Firestop
Pipelength
Pipelength
Cathedral Ceiling
Support Box
Pipelength
Round Support
Box/Wall Thimble
Pipelength
Horizontal
Termination
90° Elbow
for sufcient vent height above the roof line. For two
story applications, a re stop is required at each oor
level. If an offset is needed in the attic, additional pipe
and elbows will be required. To connect the venting
system to the appliance ue outlet, a twist-lock adapter
is built into the appliance at the factory. Refer to ‘Vent
Conguration and Restrictor Settings’ for venting
parameters.
Your total vent pipe length must be within the shaded
area of Figure 12. If a 90° elbow is used in the
horizontal plane, 36” (91.4 cm) must be subtracted
from the allowable horizontal run.
There are three (3) basic types of Direct Vent System
installations. The three (3) types of installations are
shown in Figures 13 through 15.
Figure 13: Common Horizontal Installation.
Figure 14: Common Vertical Installation.
Round Support
Box/Wall Thimble
2 ft (610 mm)
Pipelength
36" (915 mm)
Snorkel
45° Elbow
Figure 15: Common Snorkel Installation.

Initial Installation
QUALIFIED INSTALLERS ONLY
HORIZONTAL INSTALLATION:
STEP 1. Set the appliance in the desired location. Check to determine if wall studs or roof rafters are
in the way when the venting system is attached. If this is the case, you may want to adjust the
location of the appliance.
STEP 2. Direct vent pipe and ttings are designed with special twist-lock connections. Assemble the
desired combination of black pipe and elbows to the appliance adapter with pipe seams oriented
towards the wall or oor, as much out of view as possible.
Place a bead of Mil-Pac on the outer edge of the inner exhaust pipe (non-ared end). Place a
bead of high temperature silicone on the male edge of the outer pipe. Push the pipe sections
completely together, then twist-lock one section clockwise approximately  turn, until the two
sections are fully locked. The female locking lugs will not be visible from the outside, on black
Sealant
Female
Locking
Lugs
Male
Locking
Lugs
Figure 16: Twist-Lock Connection
Woodscrews
Wall Thimble
Strap
Sheet metal
screws
Fold strap
here
11/4"
(3.2cm)
Figure 18: Installing Decorative Wall Thimble.
10"
(254mm)
10"
(254mm)
Figure 17: Wall Framing Hole for
Horizontal Installation.
16
pipe. They may be located by examining the inside of the
female ends as shown in Figure 16.
Notes:
(1) Twist-lock procedure:
four (4) indentations,
located on the female end
of the pipes and ttings, are
designed to slide straight
onto the male ends of
adjacent pipes and ttings,
by orienting the four pipe
indentations so they match
and slide into the four entry
slots on the male end.
(2) Horizontal runs of vent
pipe must be supported

17
and attach to the exterior wall with the
four screws provided. Before attaching
the vent termination to the exterior wall,
run a bead of non-hardening mastic
around the edges, so as to make a seal
between the termination and the wall.
The arrow on the vent termination should
be pointing up, insure that the proper
clearances to combustible materials are
maintained.
STEP 5. Before connecting the horizontal run of
the vent pipe to the vent termination,
slide the black decorative wall thimble
cover over the vent pipe.
STEP 6. Slide the appliance and vent assembly
towards the wall, carefully inserting the
vent pipe into the cap assembly. It is
important that the vent pipe extend into
the vent cap a sufcient distance with a
minimum of 1” (3.2 cm) overlap. Secure
the connection between the vent cap pipe
and the vent cap by attaching the two
sheet metal straps extending from the
vent cap assembly into the outer wall of
the vent pipe. Use the two sheet metal
screws provided to connect the straps
to the vent pipe. Bend any remaining
portion of the sheet metal straps back
towards the vent cap, so the decorative
wall thimble will conceal it (see left image
in Figure 18).
STEP 7. Slide the decorative wall thimble up
to the wall surface and attach with the
screws provided. Apply decorative brass
or chrome trim if desired (see right image
in Figure 18).
Initial Installation
QUALIFIED INSTALLERS ONLY
Wood screws (x4)
Cut vinyl siding
away to fit standoff
Bolt (x4)
required
Nut (x4)
required
Wood
screw (x4)
Figure 19: Installing Vent Cap with Vinyl Siding Stand-
Off.
Figure 20: Installing Horizontal Vent Termination.
every 36 inches (915 mm). Wall straps are available for this purpose, also when running horizontal pipe
minimum clearances to combustibles must be maintained; 2 inches (51 mm) at top, 1 inches (38
mm) at sides, 1 inches (38 mm) at bottom.
STEP 3. With the pipe attached to the stove in the correct location, mark the wall for a 10” (25.4 cm) x
10” (25.4 cm) square hole (refer to Figure 17). The center of the square hole should match the
center line of the horizontal pipe. Cut and frame the 10” (25.4 cm) x 10” (25.4 cm) hole in the
exterior wall where the vent will be terminated. Refer to Figure 8. If the wall being penetrated
is constructed of non-combustible material i.e. masonry or concrete, a 7 inches (17.8 cm) hole
is acceptable.
STEP 4. Position the horizontal vent termination in the center of the 10” (25.4 cm) x 10” (25.4 cm) hole,

18
NOTES:
(1) The four (4) wood screws provided should be replaced with the appropriate fasteners for stucco,
brick, concrete, or other types of siding.
(2) For buildings with vinyl siding, a vinyl siding standoff, should be installed between the vent cap and
the exterior wall (see Figure 19). Attach the vinyl siding standoff to the horizontal termination. The
vinyl siding standoff prevents excessive heat from possibly melting the vinyl siding material. Note
that the horizontal vent termination bolts onto the at portion of the vinyl siding standoff (shaded
area in Figure 20), so that an air space will exist between the wall and the vent termination.
NOTES:
(1) The horizontal run of vent pipe must be level and should have a  inch rise for every one foot
of run towards the termination. Never allow the vent to run downward. This could cause high
temperature and may present the possibility of a re.
(2) The location of the horizontal vent termination on the exterior wall must not be easily blocked or
obstructed. Refer to INITIAL INSTALLATION - VENT CONFIGURATIONS AND RESTRICTOR SETTINGS.
(3) When installing a vent pipe in a chase the minimum clearance to combustibles is 2” (51 mm).
(4) Maintain manufacturer’s clearances to combustibles with venting.
CORNER INSTALLATIONS:
Do not interfere with the structural integrity of the walls.
For installations with a 36” (915 mm) snorkel refer to Figure 21 and ‘Initial Installation - Installation of
Rear Vented’.
For other corner installations refer to Figure 22 and INITIAL INSTALLATION - VENT CONFIGURATIONS AND RESTRICTOR
SETTINGS.
21/2”
(67 mm)
Inside Wall
Outside Wall
36” (915 mm)
Snorkel
Outside Wall
Outside Wall
21/2”
(67 mm)
Figure 21: Corner installation rear vented with
snorkel.
Figure 22: Corner installation top vented.
Initial Installation
QUALIFIED INSTALLERS ONLY

STEP 3. To install the Round Support Box/Wall
Thimble in a at ceiling, cut a 10” square
hole in the ceiling, centered in the hole
drilled in Step 2. Frame the hole as shown
in Figure 23.
STEP 4. Assemble the desired lengths of black pipe
and elbows necessary to reach from the
appliance adapter up through the Round
Support Box. Insure that all pipe and
elbow connections are in their fully twist-
locked position.
STEP 5. Cut hole in the roof centered on the small
hole placed in the roof from Step 2. The
hole should be of sufcient size to meet
minimum requirements for Clearance
to Combustibles, as specied. Continue
to assemble lengths of pipe and elbows
1
1
/ 2 ” (4cm) long
wood screw (x4)
10” (25.4cm) x 10” (25.4cm)
inside framing
Ceiling Joist
Framing
Figure 23: Wall Framing for Hole for Vertical
Installation.
necessary to reach from
the ceiling support box
up through the roof line.
Galvanized pipe and
elbows may be utilized
in the attic, as well as
above the roof line.
The galvanized nish is
desirable above the roof
line, due to the higher
corrosion resistance.
STEP 6. Once the pipe sections
have been joined, and
run up through the hole
in the roof, slip an elbow
strap over the exposed
sections, bend the
support straps outwards,
and push the elbow strap
Initial Installation
QUALIFIED INSTALLERS ONLY
VERTICAL INSTALLATION:
STEP 1. Check the instructions for required clearances (air spaces) to combustibles when passing
through ceilings, walls, roofs, enclosures, attic rafters, or other nearby combustible surfaces.
Do not pack air spaces with insulation.
STEP 2. Set the gas appliance in the desired location. Drop a plumb bob down from the ceiling to
the position of the appliance ue exit, and mark the location where the vent will penetrate
the ceiling. Drill a small hole at this point. Next, drop a plumb bob from the roof to the hole
previously drilled in the ceiling, mark the spot where the vent will penetrate the roof. Determine
if ceiling joists, roof rafters, or other framing will obstruct the venting system. You may wish to
relocate the appliance, or to offset, to avoid cutting load bearing members.
Vertical
Termination
Storm Collar
Flashing
Roofing nails
Elbow Strap
Figure 24: Vertical Vent Termination Installation.
19

down to the roof level, as shown in Figure 24. Tighten the clamp around the pipe section. Use
a level to make sure the pipe is truly vertical. With roong nails, secure the support straps to
the roof. Seal the nails holes heads with non-hardening mastic. Trim the excess length of the
support straps that extend out beyond the edge of the ashing.
STEP 7. Slip the ashing over the pipe section protruding through the roof. Secure the base of the
ashing to the roof with roong nails. Use a non-hardening sealant between the uphill edge
of the ashing and the roof. Insure the roong material overlaps the top edge of the ashing
as shown in Figure 24. Verify that you have at least the minimum clearance to combustibles at
the roof line.
STEP 8. Continue to add pipe sections until the height of the vent cap meets the minimum code
requirements. Refer to Figure 25 and Table 4. Note that for steep roof pitches, the vent height
must be increased. In high wind conditions, nearby trees, adjoining roof lines, steep pitched
roofs, and other similar factors can result in poor draft, or down drafting. In these cases,
increasing the vent height may solve the problem.
STEP 9. Slip the storm collar over the pipe, and push it down to the top of the roof ashing as shown
in Figure 24. Use the non-hardening sealant around the joint between the pipe and the storm
collar.
STEP 10. Twist-lock the vent cap.
H
Dimension ‘H’ obtained
from table below.
Roof Pitch Minimum Height
Feet Meters
Flat to 7/8 1 0.3
Over 7/12 to 8/12 1.5 0.46
Over 8/12 to 9/12 2 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 1.22
Over 12/12 to 14/12 5 1.52
Over 14/12 to 16/12 6 1.83
Over 16/12 to 18/12 7 2.13
Over 18/12 to 20/12 7.5 2.29
Over 20/12 to 21/12 8 2.44
Table 4: Minimum ‘H’ for Figure 25
Figure 25: Height of Vertical Termination;
Reference Table 4.
20
NOTES:
(1) If an offset is necessary in the attic to avoid obstructions, it is important to support the vent pipe
every 3 feet (91 cm), to avoid excessive stress on the elbows, and possible separation. Wall straps
are available for this purpose (see Figure 26).
(2) When ever possible, use 45° degree elbows instead of 90° degree elbows. The 45° degree elbow
offers less restriction to the ow of ue gases and intake air.
NOTES:
(1) For multi story installations. A ceiling restop is required at the second oor, and any subsequent
oors (see Figure 27). The opening should be framed to 10” (25.4 cm) x 10” (25.4 cm) inside
dimensions, in the same manner as shown in Figure 23.
Initial Installation
QUALIFIED INSTALLERS ONLY