Selkirk Twin Wall Chimney
The Selkirk Twin Wall chimney system is designed for use with oil, gas and solid fuel when used with the appropriate fire stopping components. The system is designed for gravity flow application. The Selkirk Twin Wall chimney system is available in a range of diameters and this brochure relates to the 127mm (5”) – 203mm (8”) range.
The system consists of straight lengths and fittings which are constructed entirely from stainless steel and a 25mm (1”) insulated annulus. The external skin is manufactured from 304 grade matt finish stainless steel and carries the structural load, and the inner liner is resistant to the often corrosive products of combustion, and is free to expand or contract as flue gas temperatures change. The 316 grade inner liner heats rapidly to produce a strong draught which ensures that waste gases are exhausted and condensation of the harmful products of combustion is minimised.
The system can be used internally or externally. The relatively low external wall temperature permits installation with only a 50mm (2”) air gap clearance to combustible materials.
127mm (5”) / 152mm (6”) / 178mm (7”) / 203mm (8”)
Size (external diameter)
178mm (7”) / 203mm (8”) / 230mm (9”) / 255mm (10”)
Available in 4 diameters and 6 lengths, they are easy to assemble and can be combined to obtain the required installation height.
Each length is 38mm longer than its effective length.
All lengths are seam welded.
The Adjustable Length is designed to provide small increments in length between 2 fixed points. This length is not a load bearing component, it fits over the length below and by removing the required amount of insulation material the length will adjust from 50mm to 200mm. Because the components application and installation and therefore performance cannot be accurately controlled this component should be installed 300mm from any combustible material.
Inward flanges around the band fit into grooves at chimney length joints. Reinforces joints of chimney and prevents accidental uncoupling. Locking Band is included with all insulated lengths, tees and elbows.
135° INSULATED TEE & PLUG
The 135° Insulated Tee is used at the base of a vertical flue. Each Tee is supplied with one Locking Band and plug. Can be used on the base or branch to provide access.
See Table 4A and diagrams for dimensions of the 135° Insulated Tee and a 45° Elbow positioned in a vertical or horizontal direction.
90° INSULATED TEE & PLUG
The insulated Tee allows the horizontal connection of the chimney to the appliance. The Tee Cap provided allows access for inspection and cleaning.
INSULATED TEE PLUG
The insulated Tee Plug allows access for inspection and cleaning.
ADJUSTABLE WALL SUPPORT
The Adjustable Wall Support will allow for an adjustment of 51mm to 152mm from a vertical wall. For use with an insulated tee. Consists of two wall brackets, plate and hardware. Two angled brackets are supplied with the adjustable wall support to hold the T plug in place as illustrated.
ROOF SUPPORT (Universal)
Provided with gimbal plates to permit a chimney to be supported on roof joists, trussed rafters etc.
Maximum length of chimney which can be suspended below the roof support is 6.08 metres. Maximum total length (both above and below is 9.12 metres).
The Anchor Plate can be used for adapting the Selkirk Twin-Wall Chimney System to a “brick built chimney”. Stainless steel and heavy gauge steel construction for long life. Retains chimney with a twist-lock connection.
INTERMEDIATE WALL SUPPORT
Designed to provide intermediate support for the chimney at any point throughout its length. Will support chimney heights as per chart on page 3.
Chimney length is not supplied.
ANODISED WALL BAND
The Wall Band is used along the wall to provide for 50mm clearance and assure stability, required at 2.4 metres or closer intervals to stabilise the chimney. Stainless steel band, anodised back plate.
STAINLESS STEEL WALL BAND
All stainless steel construction provides 50mm clearance from the wall and lateral stability.
STAINLESS STEEL WALL BAND EXTENSION BRACKETS
Attaches to stainless steel wall band (as shown) to extend clearance between chimney and wall surface. Band not included.
Elbows have barbs on only the male couplers. This allows 360 degree rotation and locking bands secure the components together at the exact offset required. Elbows can be used on the same 50mm air space clearance as chimney sections.
Firestop Spacers are non-load bearing and provide lateral bracing. They can be used where the chimney passes through a non- combustible floor or where the chimney below is not enclosed. If an enclosure is applied to within 50mm of the outside skin, four grilles must be used, two each side, top and bottom.
Secured with Locking Band (not supplied).
This cowl is streamlined and compact, it harnesses the airflow around the chimney to produce a positive upward draught. It connects to a Selkirk Twin-Wall chimney with use of a Locking Band (not supplied). Powder coated silver.
(Also available in Black - code number ending DADB)
This product is tested to BS715 and against BS EN1856 Part 2 as being suitable for all types of fuel.
SELDEK ALUMINIUM FLASHING
The Seldek Flashing is used to form a watertight seal when the chimney penetrates a slate or tiled roof, available with lead or aluminium base (as shown).
For external pipe diameters from 50mm to 170mm (Seldek No. 1), or 110mm to 200mm (Seldek No. 2), or 160mm to 300mm (Seldek No. 3).
|SDA101B||500||500||Seldek No. 1|
|SDA102B||600||600||Seldek No. 2|
|SDA103B||764||764||Seldek No. 3|
The Storm Collar is designed to fit around the chimney pipe just above the upstand of a standard roof flashing. The upper edge of the Storm Collar should be waterproofed with non-hardening silicone caulking to prevent any water from leaking between the Storm Collar and chimney pipe.
NOTE: Storm Collar is not required with Seldek flashings.
ROOF BRACE KIT
A Roof Brace Kit can be used whenever there is a need to stabilise the chimney above the roof level. The roof brace kit must be used if the chimney extends 1.5 + metres above the roof. The arms can be adjusted from 1.5 metres to 2.9 metres in length.
Used as a vertical or horizontal connection between chimney lengths and connector pipe or to connect directly to an appliance.
Use to connect from an outlet or appliance, increasing to the next flue size (e.g. 5” to 6”).
COSMETIC COVER RING
Used to finish the transition between the single skin flue pipe and the Twin-Wall chimney held in place by the locking band. Black powder coated.
Available in Brushed Aluminium at same price.
|127 mm||05STC-CCR||for 127mm adaptor (05STC-A)|
|152 mm||06STC-CCR||for 152mm adaptor (06STC-A)|
|178 mm||07STC-CCR||for 178mm adaptor (07STC-A)|
|203 mm||08STC-CCR||for 203mm adaptor (08STC-A)|
|127 mm||05STC-CCRI||for 100 - 127mm increasing adaptor (05STC-IA)|
|152 mm||06STC-CCRI||for 127 - 152mm increasing adaptor (06STC-IA)|
|178 mm||07STC-CCRI||for 152 - 178mm increasing adaptor (07STC-IA)|
|203 mm||08STC-CCRI||for 178 - 203mm increasing adaptor (08STC-IA)|
Used as a cosmetic cover plate where the chimney penetrates a sloped wall or ceiling available in flat, 20°, 30° or 45° angles.
Used to allow chimney to pass through a cavity wall.
ADAPTOR TO FLEX LINER
Used where STC connects an appliance to an existing chimney which is to be lined. The adaptor fits to STC and the flexible liner fits inside of the single skin tail.