CAD STC Brochure Drawing.png

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.

[ Open All | Close All ]

1] Composition:
Lengths and fittings are twin-walled with a 25mm (1”) cavity. The outer casing is joined to both male and female couplers, while the inner liner is connected only to the male coupler, as flue gas temperatures vary the inner liner can expand and contract without affecting the structural performance. Selkirk Twin Wall chimney is insulated with rockwool and this high quality insulation has an optimum and carefully controlled density which maintains a relatively high flue gas temperature throughout the chimney lengths. Lengths and fittings are twist-locked together with a one eighth turn. Locking bands fit over the two rolled seams at joints between lengths and fittings and MUST be used.

2] Key Dimensions:
Size (internal diameter) 127mm (5”) / 152mm (6”) / 178mm (7”) / 203mm (8”) Maximum outside diameter 178mm (7”) / 203mm (8”) / 230mm (9”) / 255mm (10”)

3] Application:
Typical equipment includes boilers, stoves and heaters. The Selkirk chimney system must be installed in accordance with all appropriate building regulations, codes of practice and manufacturers installation instructions. Selkirk Twin Wall chimney in diameters 127mm (5”) – 203mm (8”) are manufactured to EN1856-1. The STC product designation is: T450 N1 D Vm L50045 G(50)

 
Screenshot 2018-08-16 22.50.04.png

LENGTHS

Available in 4 sizes 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.

 

Screenshot 2018-08-16 22.53.03.png
SizePart #ammbmmcmm
127 mm05STC-L481219127178
127 mm05STC-L36914127178
127 mm05STC-L24610127178
127 mm05STC-L18457127178
127 mm05STC-L12305127178
127 mm05STC-L6152127178
SizePart #ammbmmcmm
152 mm06STC-L481219152203
152 mm06STC-L36914152203
152 mm06STC-L24610152203
152 mm06STC-L18457152203
152 mm06STC-L12305152203
152mm06STC-L6152152203
SizePart #ammbmmcmm
178 mm07STC-L481219178229
178 mm07STC-L36914178229
178 mm07STC-L24610178229
178 mm07STC-L18457178229
178 mm07STC-L12305178229
178 mm07STC-L6152178229
SizePart #ammbmmcmm
203mm08STC-L481219203254
203mm08STC-L36914203254
203mm08STC-L24610203254
203mm08STC-L18457203254
203mm08STC-L12305203254
203mm08STC-L6152203254

35.JPG

ADJUSTABLE LENGTH

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.

SizePart #amm
127 mm05STC-AL300
152 mm06STC-AL300
178 mm07STC-AL300
203 mm08STC-AL300
Screenshot 2018-08-18 14.59.37.png

37.JPG

LOCKING BANDS

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.

SizePart #amm
127 mm05STC-LB178
152 mm06STC-LB203
178 mm07STC-LB229
203 mm08STC-LB254
Screenshot 2018-08-18 15.05.44.png

38.JPG

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.

SizePart #ammbmm
127 mm05STC-E135450453
152 mm06STC-E135 550457
178 mm07STC-E135600533
203 mm08STC-E135650565

41.JPG

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.

SizePart #ammbmmcmm
127 mm05STC-E90159159318
152 mm06STC-E90162162324
178 mm07STC-E90175175349
203 mm08STC-E90187187375
Screenshot 2018-08-18 15.29.16.png

39.JPG

INSULATED TEE PLUG

The insulated Tee Plug allows access for inspection and cleaning.

SizePart #
127 mm05STC-ITP
152 mm06STC-ITP
178 mm07STC-ITP
203 mm08STC-ITP

23.JPG

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.

SizePart #ammbmmcmm
127 mm05STC-AWS479270235
152 mm06STC-AWS479270235
178 mm07STC-AWS521295260
203 mm08STC-AWS556321286
Screenshot 2018-08-18 15.49.51.png

42.JPG

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).

SizePart #
Universal STC-RS

26.JPG

ANCHOR PLATE

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.

SizePart #ammbmm
127 mm05STC-AP127235
152 mm06STC-AP152235
178 mm07STC-AP178260
203 mm08STC-AP203286
Screenshot 2018-08-19 17.31.17.png

58.JPG

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.

 

SizePart #ammbmm
127 mm05STC-AIWS435250
152 mm06STC-AIWS435275
178 mm07STC-AIWS435300
203 mm08STC-AIWS435325
Screenshot 2018-08-19 17.33.55.png

66.JPG

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.

 

SizePart #ammbmm
127 mm 05STC-WB12550
152 mm 06STC-WB 14550
178 mm 07STC-WB17550
203 mm08STC-WB 20050
Screenshot 2018-08-19 17.36.49.png

67.JPG

STAINLESS STEEL WALL BAND

All stainless steel construction provides 50mm clearance from the wall and lateral stability.

SizePart #ammbmm
127 mm 05STC-WBSS17550
152 mm 06STC-WBSS19050
178 mm 07STC-WBSS21050
203 mm08STC-WBSS22050
Screenshot 2018-08-19 17.39.25.png

17.JPG

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.

Part #ammbmm
STC-WBEB40300
Screenshot 2018-08-19 17.42.20.png

62.JPG

ELBOW

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.

SizeDegree  
 15°30°45°
127 mm05STC-E1505STC-E3005STC-E45
152 mm06STC-E1506STC-E3006STC-E45
178 mm07STC-E1507STC-E3007STC-E45
203 mm08STC-E1508STC-E3008STC-E45
Screenshot 2018-08-19 17.47.13.png

08.JPG

FIRESTOP SPACER

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.

SizePart #ammbmmcmm
127 mm 05STC-FS191343343
152 mm 06STC-FS206356356
178 mm 07STC-FS232381381
203 mm08STC-FS257406406
Screenshot 2018-08-19 18.05.51.png

11_1300907.jpg

RAIN CAP

Secured with Locking Band (not supplied).

SizePart #ammbmmcmm
127 mm05STC-RC127254160
152 mm06STC-RC152305160
178 mm07STC-RC178356190
203 mm08STC-RC203406190
Screenshot 2018-08-19 18.27.54.png

DADTS-01.png

DAD COWL

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 DADB)

This product is tested to BS715 and against BS EN1856 Part 2 as being suitable for all types of fuel.

SizePart #ammbmm
127 mm 05STC-DADS330130
152 mm 06STC-DADS330130
178 mm 07STC-DADS330130
203 mm08STC-DADS330130
Screenshot 2018-08-19 18.31.39.png

Screenshot 2018-08-19 18.58.14.png

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).

Part # ammbmm 
SDA101B500500Seldek No. 1
SDA102B600600Seldek No. 2
SDA103B764764Seldek No. 3
Screenshot 2018-08-19 18.58.19.png

09.JPG

STORM COLLAR

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.

SizePart #
127 mm 05STC-SCB
152 mm06STC-SCB
178 mm 07STC-SCB
203 mm 08STC-SCB

69.JPG

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.

SizePart #
Universal STC-RBK

87.JPG

ADAPTOR

Used as a vertical or horizontal connection between chimney lengths and connector pipe or to connect directly to an appliance.

SizePart #ammbmmcmm
127 mm05STC-A12717840
152 mm06STC-A15220340
178 mm07STC-A17822940
203 mm08STC-A20325440
adaptor size.JPG

86.jpg

INCREASING ADAPTORS

Use to connect from an outlet or appliance, increasing to the next flue size (e.g. 5” to 6”).

SizePart #ammbmmcmm
127 mm05STC-IA10017840
152 mm06STC-IA12520340
178 mm07STC-IA15023040
203 mm08STC-IA17525540
increase adaptor.JPG

smallring.jpg

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.

SizePart # 
127 mm05STC-CCRfor 127mm adaptor (05STC-A)
152 mm06STC-CCRfor 152mm adaptor (06STC-A)
178 mm07STC-CCRfor 178mm adaptor (07STC-A)
203 mm08STC-CCRfor 203mm adaptor (08STC-A)
127 mm05STC-CCRIfor 100 - 127mm increasing adaptor (05STC-IA)
152 mm06STC-CCRIfor 127 - 152mm increasing adaptor (06STC-IA)
178 mm07STC-CCRIfor 152 - 178mm increasing adaptor (07STC-IA)
203 mm08STC-CCRIfor 178 - 203mm increasing adaptor (08STC-IA)

14.jpg

TRIM PLATES

Used as a cosmetic cover plate where the chimney penetrates a sloped wall or ceiling available in flat, 20°, 30° or 45° angles.

SizePart #   
 Flat20°30°45°
127 mm05STC-FTP05STC-TP2005STC-TP30 05STC-TP45
152 mm06STC-FTP06STC-TP20 06STC-TP30 06STC-TP45
178 mm07STC-FTP07STC-TP20 07STC-TP30 07STC-TP45
203 mm08STC-FTP08STC-TP20 08STC-TP30 08STC-TP45

10.JPG

WALL SLEEVE

Used to allow chimney to pass through a cavity wall.

SizePart # ammbmm
127 mmWS05F195400
152 mmWS06F225400
178 mmWS07F280400
203 mmWS08F300400
wall sleeves.JPG

selkirk adaptor to flex.jpg

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.

SizePart #
127 mm05STC-ATF
152 mm06STC-ATF
178 mm07STC-ATF
203 mm08STC-ATF