Seldek Twin Wall Chimney
The Seldek® Twin Wall chimney system is designed to meet the requirements of multi-functional applications for a variety of fuels. The system provides a high quality and robust chimney with high thermal performance and ease of installation. The Seldek chimney is suitable for negative pressure conditions where the maximum flue gas temperature does not exceed 600°C and is soot fire tested to 1000°C. When used with positive pressure application such as pellet stoves or condensing appliances the Seldek system can be fitted with seals at each joint. Seals must be ordered separately as required. The system consists of straight lengths and fittings which are constructed entirely from stainless steel and a nominal 30mm mineral wool insulated annulus. The system may be installed internally or externally and must conform to national and local building regulations. The relatively low external wall temperature permits installation with only a 50mm (2") air gap clearance to combustible materials.
• Fully welded system
• Inner liner is 0.5mm 316 grade stainless steel
• Outer skin is 0.5mm 441 grade stainless steel
• All lengths and fittings supplied with a standard locking band
• All tees supplied with a plug which incorporates a 22mm drain point
• Available in diameters 100mm, 130mm, 150mm, 180mm and 200mm.
• Black powder coated available from stock in 150mm diameter
Available in 5 diameters and 4 lengths and can be combined to obtain the required installation height. Because of the socket/spigot joint and for extra strength each length has an effective length 65mm shorter than shown. All lengths are supplied with a locking band.
Used to provide access for inspection or cleaning.
TELESCOPIC ADJUSTABLE LENGTH
The adjustable length is designed to provide adjustment between two fixed points. The length will adjust from 370mm-500mm. Required adjustment is achieved by carefully removing the excess insulation and securing with self tapping screws. This component is not load bearing and due to onsite adjustment of the insulation it should be installed 300mm from combustibles.
STANDARD LOCKING BAND
Standard locking bands are used to join lengths and fittings together and must be used.
A standard locking band is supplied with all insulated lengths, tees and elbows.
WIDE LOCKING BAND
The wide locking band can be used when an unsupported length of up to 3 metres is required provided that there are no elbows or other fittings in the final 3 metres of the chimney and that there is a minimum of 3 metres beneath the final support.
135° INSULATED TEE & PLUG
The 135° Tee is used at the base of a vertical chimney. Each tee is supplied with a standard locking band and a tee plug. Each plug is fitted with a 22mm drain point as standard.
90° INSULATED TEE & PLUG
The 90° allows a horizontal connection of the chimney to the appliance. The tee plug provided allows for inspection and cleaning and is supplied with a 22mm drain point as standard.
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 from 50-150mm from a vertical wall. It may be used at the base of a system or anywhere throughout its length where a support is required. Two stainless steel angled brackets are supplied with the wall support and a total effective length of 160mm is incorporated into the support, top and bottom.
The roof support allows the chimney to be supported on roof joists, trussed rafters etc. The support is supplied with self tapping screws to secure to the outside skin of the chimney.
The anchor plate is usually used for adapting the Seldek® Twin Wall System to 'brick built chimney'. Flexible flue liner can be attached to the single skin tail of the anchor plate.
The all stainless steel wall bands are used to provide lateral support where required. The bands will adjust to extend the distance between the chimney and wall surface. Wall bands must be installed every 3 metres
|No. 0 Wall Band|
|No. 1 Wall Band|
|No. 2 Wall Band|
Elbows are available in either 15°, 30° or 45° angles. They are secured to lengths or other fittings with the locking band provided.
Used on oil or gas installations where declared flue gas temperatures do not exceed 250°C and where the chimney passes through a combustible floor.
VENTILATED FIRESTOP SPACER
Used where the chimney passes through a combustible ceiling and floor and flue gas temperatures are above 250°C typically with solid fuel or oil. This is not a load bearing component.
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 Seldek Twin-Wall chimney with use of a Locking Band (not supplied). Powder coated silver.
(Also available in black - code number DADB)
This cowl is suitable for use in exposed locations and improves resistance to rain ingress. For use on solid fuel or oil applications.
The end cap may be used to close the end of the chimney where the insulation is exposed. for example where a single skin termination such as a vidette cowl is required.
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 pipes or to connect directly to the appliance.
Used to adapt from a small outlet to larger twin wall system.
The ceiling support MUST be used whenever the weight of the Seldek® system is to be taken at ceiling level. The component incorporates a radiation shield and is used where the chimney passes through a combustible floor. The round solid firestop is supplied detached from the bottom section of the joist shield. It should be adhered to it prior to installation with a ‘high grab’ metal adhesive such as Geocel xxx.Please refer to page 8 for detailed instructions.
VENTILATED CEILING SUPPORT
Used as a support and a firestop and must be used where the weight of the chimney is to be taken at ceiling level.
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 Flexible Liner
Used where Seldek® connects an appliance to an existing chimney that needs to be lined.
Should be used on pellet and condensing appliances.