Enviro C-11290, C-10381 owner manual Manufacturer Trade Name Nominal Sizes

Initial Installation

QUALIFIED INSTALLERS ONLY

10.Apply a bead of Mill-Pac Black sealant to the top section of the Ø4” (10 cm) by 5” (12.5 cm) flue collar adaptor previously installed into the fireplace flue outlet. Slide the Ø4” (10 cm) flex vent over the flue collar and secure with three (3) sheet metal screws evenly spaced.

11.Place a bead of high temperature silicone on the intake collar of the fireplace, slide the Ø6⅝” (16.25 cm) flex intake liner over the collar, secure the flex liner with three (3) sheet metal screws evenly spaced.

12.On the outside of the exterior wall, apply a bead of Mill-Pac Black sealant to the Ø4” (10 cm) pipe of the vent terminal. Slide the flex liner onto the vent terminal and secure with three (3) sheet metal screws evenly spaced.

13.Place a bead of high temperature silicone on the intake collar of the vent terminal, slide the Ø6⅝” (16.25 cm) flex intake liner over the collar, secure the flex liner with three (3) sheet metal screws evenly spaced.

Horizontal Vent Termination
Wall Thimble	Wall Framing
Fire Stop
Exhaust 4" Flex Pipe
Wire Spacers
Combusion Air 6 5/8" Flex Pipe
Flue Pipe Adaptor

Figure 21: Installation of Fireplace Horizontal Vent Kit.

14.Attach the vent terminal to the outside of the house using four (4) wood screws provided.

15.Light the appliance and ensure proper operation.

Other Approved Vent Parts:

Table 4: Approved Vent Manufacturers

Manufacturer	Trade Name	Nominal Sizes
American Metal Products	AmeriVent Direct	4” - 6 5/8”
Security Chimneys International LTD	Secure Vent	4” - 6 5/8”
Selkirk Metalbestos	Direct-Temp	4” - 6 5/8”
Simpson Dura-Vent	Direct Vent GS	4” - 6 5/8”

The Westport fireplace has been tested and certified for use with AMERICAN METAL PRODUCTS “AMERIVENT DIRECT”, SIMPSON DURAVENT TYPE GS PIPE FOR GAS STOVES. SECURITY CHIMNEY’S “SECURE VENT DIRECT VENT SYSTEM” and SELKIRK “DIRECT-TEMP VENT SYSTEM” kits are available for horizontal and vertical 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.

WARNING: Do not mix parts from different vent manufacturers’ systems.

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