The Speedfit System should not be used on an uncontrolled heat source. Insulation Should comply with BS6700 and BS5422, as for copper. Minimum bend radii (PEX) Pipe diameter 10mm 15mm 22mm 28mm Min radius with clips 100mm 175mm 225mm 300mm Min radius with cold forming bend 30mm 75mm 110mm – Clip spacing (in mm) For surface mounted pipes.
Pipe diameter Clip Spacing Horizontal Run Vertical Run 10 – 15mm 300mm 500mm 22mm 500mm 800mm 28mm 800mm 1,000mm. Where pipe is concealed, clipping may only be required where necessary. For advice on the replenishment of additives such as corrosion inhibitors, the following manufacturers should be contacted: Fernox Manufacturing Limited on 01799 550811 or Sentinel, BetzDearborn Limited on 0151 420 9595. DO NOT ALLOW CONTACT WITH jointing compounds, cellulose based paints, paint thinners or strippers, solder flux, acid-based descalents or aggressive cleaning products, including those below pH4, high in hypochlorite (e.g. (See the DISINFECTION OF HOT WATER SYSTEMS section of the installation advice for specifically permitted disinfection procedures) Solder Flux. No fluxes of any type should come into contact with JG Speedfit pipe fittings. If fluxes are to be used in an environment where Speedfit is installed, then (1) extreme care should be taken to ensure that no such contact takes place, and (2) JG recommend installers only use fluxes tested and approved in writing in advance by JG.
At the date of this publication, the only such approved flux is Fernox Flux. Speedfit is not suitable for use in systems where the water containing high levels of chlorine. Speedfit products, when used indoors, are not affected by sunlight. When used outdoors protect from ultra violet light by lagging or painting. Pipe clips should not be fitted any closer than 60mm from the end of the fitting. Pipe should be adequately supported by pipe clips to prevent undue stress (side load) on fittings. Pipe Inserts Must be used on all installations when using plastic pipe and should be fully inserted. Metal Joists When ‘cabling’ plastic pipe through metal joists ensure rubber grommets are in place to prevent damage to pipe. Use of collet covers or collet clips on fittings recommended. Connection To Boilers A minimum 1000mm run of copper pipe must be installed between the boiler and the Speedfit system, as per BS5955: Part 8. Connection to copper pipe 450mm is the minimum distance to make a solder connection on copper pipe inserted into a Speedfit fitting. Ensure that any residual flux solder does not come into contact with the fitting. Concrete And Masonry Speedfit pipe and fittings can be laid in concrete and masonry providing they are installed in conduit pipe with access boxes for the fittings. This is to enable the pipe to expand and provide accessibility for both pipe and fittings. As stated in Water Regulation Scheme 2.7 and BS 8000 : Part 15, fittings and pipe should be removable for possible replacement. Insulation is also recommended to protect against heat loss and the effects of frost. Electrical Continuity If Speedfit is used in an existing metal system which may have been used for earthing, electrical continuity should be reinstated. Valves And Taps Plastic 15mm and 22mm valves and taps available from JG Speedfit Ltd are not suitable for central heating installations. 1/4 Turn Valves These valves have been designed to allow temporary servicing of downstream equipment and must only be used in the fully open or fully closed position. DO NOT USE THESE VALVES: In a partially open position to control flow; to provide a permanent termination; without tubing assembled or plugged (or threaded connections sealed) or as a tap or “faucet”. Collet covers Collet covers provide added security against pipe disconnection, e.g. the fitting coming into contact with rigid surfaces and behind dry-lining walls. They are offered in white as standard and in red or blue to provide colour coding of pipe. Collet clips Grey collet clips are used with standard fittings to prevent accidental pipe disconnection. Red and blue clips should not be used to prevent accidental release of pipe.
To ensure the pipework and fittings have been installed correctly, whether it be on a new or extended system, it is essential that the system is checked and hydraulically wet tested. Testing should be at 2 bar for 10 minutes and 10 bar for 10 minutes.
This testing, combined with other relevant checks, should reveal installation problems and is regarded as good plumbing practice. However, system testing should not be regarded as a substitute for correct installation. As is usual practice for any plumbing installation, flushing of the system prior to the use of Speedfit is recommended to remove any contaminants/chemical residue from elsewhere in the system.