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Cont ...
3.12
Hose to pipework:
1. The hoses are fitted with plastic push-in connectors, which must only be
connected to the following:
z
22 mm dia. pipework in the UK
z
21 mm dia pipework in the ROI
Ensure the pipe is free from all score marks and deformities in the area of the
insertion depth (Fig. 7) and cut the pipe square removing all burrs and sharp
edges to prevent damage to the sealing ‘O’-ring.
2. Prior to inserting pipe into fitting mark the insertion depth on the wall of the
pipe with a soft pencil at a distance of 33 mm from the end to be inserted.
3. Check in the mouth of the fitting that ‘O’-ring, nylon washer and collet are in
position.
4. Push pipe firmly into fitting, until pencil mark is level with the top of the collet
and the pipe stop resistance is felt. Pull on pipe to check it is secure and
correctly fitted.
5. To break the joint, push pipe firmly into fitting, hold collet down and gently
remove pipe. If the system has been filled with water care should be taken to
isolate pump and towels used to absorb spilled water.
Fig. 7
Pencil
mark
Insert depth
33 mm
Pipe
Fig. 9
Body
Collet
Washer
‘O’-Ring
Pipe Stop
Hose
Isolating Valve
Integral pump
isolating valve
shown in ‘OFF’
position.
Integral pump
isolating valve
shown in ‘ON’
position.
