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Selkirk Insta Lock (IL) Gas Vent Chimney

Selkirk Insta-Lock is a factory made twin wall gas vent system comprising a range of straight lengths, associated fittings and accessories. It is manufactured with an aluminium liner and an outer casing of Zalutite.

The air gap between the outer casing and inner liner insulates the vent and ensures a strong draft at the start of firing in order to minimise condensation. The resulting low external temperature under normal operating conditions permits installation with only 25mm (1 in.) clearance to combustible materials.

Lengths and fittings lock together to provide a rigid flue system and to ensure maximum ease of site assembly. The unique lock tab feature further secures each joint.

The Selkirk Insta-Lock Gas Vent system is available in 5 diameters 102mm (4"), 127mm (5"), 152mm (6"), 177mm (7") and 203mm (8") and is suitable for gas appliances in domestic or small commercial installations with draught-hoods or with a flue gas temperature not exceeding 260°C, and where the appliance is fitted with a draughthood or diverter. Consideration should be made to the sulphur content of the fuel oil which can have a harmful effect on aluminium if excessive condensation conditions are allowed to persist in the flue.

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1] Authority:
The Selkirk Insta-Lock Gas Vent system must be installed in accordance with the requirements of BS5440 part 1 code of practice for flues and air supply for gas appliances of rated input not exceeding 60KW, the requirements of approved document J of D.O.E building regulations and Section F of the building standards (Scotland) Regulations. The Insta-Lock system in diameters 4-6" is manufactured and tested to comply with BS715 1993 and complies with EN1856 Part 1 when tested in accordance with BSEN 1859. Product designation T250N2DVmL1100300(25) Certificate No. 0086- CPD-503081

2] Key Dimensions:
Size (internal diameter) 102mm (4") / 127mm (5") / 152mm (6") / 177mm (7") / 203mm (8") Maximum outside diameter 114mm (4 1/2") / 140mm (5 1/2") / 165mm (6 1/2") / 190mm (7 1/2") / 216mm (8 1/2")

3] Jointing:
All lengths and fittings are designed to be installed with the male coupling uppermost. The female coupling of the next component is pushed and twisted into place to provide a firm and secure connection by a simple locking device and a lock tab for added security.

4] Supports:
Wall bands are available and for wall fixed installations should be used at 3m (10ft.) centres. The wall bands give a nominal 50mm (2") clearance to the wall and provide lateral support. A Support Plate is available which provides support for the vent at floor penetrations. The support plate is fixed on top of the floor joists and the flanged collar is clamped around the flue. The flange rests on the plate. A firestop plate is used on the underside of the ceiling penetration. Both components provide a 25mm air gap clearance from combustibles. Where the gas vent extends more than 1m above the last support (not including the terminal) it must be braced.

5] Lengths of Vent:
Lengths are available from 152mm (6") to 1523mm (60") and should be used in combination to make up the required height. Gas vent lengths should not be cut. Adjustable lengths are available to accommodate odd distances between vent lengths or connectors. To accommodate the required length these telescope over any standard length. The installed length of each unit is 38mm (1-1/2") less than the overall length.

 
IL Lengths.jpg

LENGTHS

Available in 5 sizes. They are easy to assemble and can be combined to obtain the required installation height.

Each length is 38mm longer than its effective length.

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SizePart #Length (mm)
102 mm4SIL-601524
102 mm4SIL-36914
102 mm4SIL-18457
102 mm4SIL-12304
102 mm4SIL-6152
SizePart #Length (mm)
127 mm5SIL-601524
127 mm5SIL-36914
127 mm5SIL-18457
127 mm5SIL-12304
127 mm5SIL-6152
SizePart #Length (mm)
152 mm6SIL-601524
152 mm6SIL-36914
152 mm6SIL-18457
152 mm6SIL-12304
152 mm6SIL-6152
SizePart #Length (mm)
177 mm7SIL-601524
177 mm7SIL-36914
177 mm7SIL-18457
177 mm7SIL-12304
177 mm7SIL-6152
SizePart #Length (mm)
203 mm8SIL-601524
203 mm8SIL-36914
203 mm8SIL-18457
203 mm8SIL-12304

ADJUSTABLE LENGTH.jpg
 

ADJUSTABLE LENGTH

Used in combination with a Straight Length, this component assures that an exact required vent length can be achieved. It allows for easy disassembly and can absorb the linear expansion of longer pipe lengths.

The adjustable length is not a loadbearing component. As an expansion compensator installed vertically, it requires a support every 18m.

sil at.PNG
SizePart #Length (mm)
102 mm4SIL-AT18 457
102 mm4SIL-AT12 304
127 mm5SIL-AT18457
127 mm5SIL-AT12304
152 mm6SIL-AT18457
152 mm6SIL-AT12304
177 mm7SIL-AT18457
177 mm7SIL-AT12304
203 mm8SIL-AT18457
203 mm8SIL-AT12304

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90 elbow.PNG

90° ADJUSTABLE ELBOW

Provides a variable angle between 0° and 90°

SizePart #ammbmm
102 mm4SIL-90E120120
127 mm5SIL-90E120120
152 mm6SIL-90E120120
175 mm7SIL-90E120120
203 mm8SIL-90E120120
90 deg el.PNG

draught hood connector (DHC).jpg

DRAFT HOOD CONNECTOR

This component is designed to connect insta-lock pipe to the single wall flue collar or draft hood outlet of the appliance.

SizePart #amm
102 mm4SIL-DH115
127 mm5SIL-DH115
152 mm6SIL-DH115
177 mm7SIL-DH115
200 mm8SIL-DH115
DFRAFT HOOD.PNG

ADAPTER TO FLEX.jpg

ADAPTOR TO FLEXIBLE LINER

Bottom end of this component connects to Insta-Lock. Upper end connects to flex flue liner.

SizePart #amm
102 mm4SIL-SA100
127 mm5SIL-SA100
152 mm6SIL-SA100
177 mm7SIL-SA100
ADAP TO FLEX.PNG

draught hood connector (DHC).jpg

FLEXIBLE LINER TO INSTA-LOCK

Connects to flexible liner. The Insta-Lock gas vent continues to terminate in the usual manner.

SizePart #ammbmm
102 mm4SIL-FL143200
127mm5SIL-FL143200
152 mm6SIL-FL143200
177 mm7SIL-FL143200

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SUPPORT PLATE

Supports 18 metres of flue when fitted on floor joists, also acts as a firestop.

SizePart #ammPlate Dim
102 mm4SIL-SP117432mm x 254mm
127 mm 5SIL-SP143432mm x 305mm
152 mm 6SIL-SP168432mm x 305mm
177 mm 7SIL-SP193432mm x 355mm
203 mm 8SIL-SP219432mm x 355mm
SP.PNG

fire stop spacer.jpg

FIRESTOP SPACER

Attached on and under a floor or on both sides of a partition, it serves to position the vent whenever it passes through a floor or joist maintaining a minimum 25mm clearance between the external casing of the flue and any combustable materials.

SizePart #amm
102 mm4SIL-FS127
127 mm5SIL-FS152
152 mm6SIL-FS175
177 mm7SIL-FS203
203 mm8SIL-FS228
FS.PNG

wall band (SIL-WBI).jpg

WALL BAND

Use at intervals not exceeding 2.5ms to provide lateral support.

SizePart #ammbmmcmm
102 mm4SIL-WB10952102
127 mm5SIL-WB12656102
152 mm6SIL-WB14058102
177 mm7SIL-WB15460102
203 mm8SIL-WB16963102
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stand off wall bracket (SOB).jpg

STAND OF WALL BRACKET

Designed to provide internal lateral bracing support off a wall or structure, the strut can be cut to length to provide variation in wall clearance.

SizePart #  
100 mm4SIL-SOB238 max80 min
125 mm5SIL-SOB240 max80 min
150 mm6SIL-SOB237 max80 min

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RIDGE TILE ADAPTOR

 

SizePart #Length mm
102 mm4SIL-RTA285
127 mm5SIL-RTA285
RTA 2.PNG

gas vent terminal (GVT).jpg

GAS VENT TERMINAL

Fabricated aluminium.

SizePart #ammbmm
102 mm4SIL-GVT18493
127mm5SIL-GVT21193
150mm6SIL-GVT21193
GVT.PNG

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ROUND TOP

SizePart #ammbmm
102 mm4SIL-RT203108
127mm5SIL-RT254133
152 mm6SIL-RT305159
177 mm7SIL-RT356185
203 mm8SIL-RT407210
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STORM COLLAR

SizePart #ammbmm
102 mm4SIL-SC40194
127mm5SIL-SC40219
152 mm6SIL-SC40244
177 mm7SIL-SC40244
203 mm8SIL-SC40244
STORM C 1.PNG

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FREE STANDING GAS BOX

The Freestanding Gas Flue Box has a twin-wall construction and is for use with any Gas Fire manufactured and tested to BS 5258: Parts 5 and 16

SizePart #ammbmmcmm
127 mm5GB-FS610212457
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RECESSED GAS BOX

This box is a deeper version of the freestanding gas box and its installation requirements are the same. However, being deeper it can also be used to fit within the thickness of an internal masonry or plaster and timber stud wall so that the gas fire is flush to the wall in one room with the insta lock gas vent behind the wall. This box is supplied with the top connection suitable for a flexible gas flue liner, if the rigid insta lock gas vent is to be used and adaptor for flexible liner (05SIL-FL) should be used.

SizePart #ammbmmcmm
127 mm5GB-R610331457
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