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Initial Installation
QUALIFIED INSTALLERS ONLY
VENT PARTS AND TERMINAL CLEARANCES:
The Sherwood Home Collection of replaces have been tested and certied for use with SIMPSON
DURAVENT TYPE GS PIPE FOR GAS STOVES. 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.
VENTING:
This replace has been tested and certied for use with SIMPSON DURAVENT TYPE GS PIPE FOR GAS
STOVES, SECURITY CHIMNEY’S “SECURE VENT DIRECT VENT SYSTEM” and SELKIRK “METALBESTOS
MDV VENT SYSTEM”
A 1 inch (2.5 cm) clearance to combustibles must be maintained around any vertical vent pipe. Around
a horizontal vent pipe, the clearance to combustibles should be 2 inches (5 cm) above and 1 inches (4
cm) on the sides and bottom. When combustible materials are directly above a 90° elbow, 3 inches (7.6
cm) of clearance are necessary. A 10 inches (25 cm) x 10 inches (25 cm) frame will assure the proper
support and spacing for the vent pipe as it passes through the wall. Installations in Canada require that a
wall thimble be used for passing through walls and ceilings, see Figure 21. All sealing and vapour barriers
must comply with local building codes.
Table 3: Vent part numbers.
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
953 4DT-SC SV4FC Storm collar 984 4DT-HC SV4CHC Horizontal square termination
963 4DT-FS SV4BF Fire stop 985 4DT-HHC High wind horizontal termination
988 4DT-WS/B SV4BM Wall strap/support/band 978 4DT-VKC SV0FAK Vertical termination kit
970 4DT-HKA SV0SHK Horizontal termination kit
(SD: Basic Kit, SEL: Kit A,
SC: Standard Kit)
971 4DT-HKB SV0SHK2 Horizontal termination kit
(SD: Kit A, SEL: Kit B, SC: Kit)