Page 92 - B8773-AEW-XX-XX-PP-A-0001_[P8]_Contractors Manual

4.6.2 Cold Water 4.6.3 Sink Waste
• Cold water installation shall commence from Problems have arisen with lack of capacity
the incoming mains stop-cock in the position within the drains from the triple bowl sink. The
indicated on drawing. main contractor shall size the pipework such
• A double check valve to Water Regulations that there is free flow of waste water when all
specification shall always be installed three sink bowls are emptied at once, and so
adjacent to the main incoming stop tap. that if 2 bowls are emptied at once, there is no
• Cold water pipework shall be run in light back flow into the third bowl.
gauge copper tube and installed as the
domestic hot water pipework.
• All pipework shall be insulated as the domestic
hot water pipework with the addition of an 4.6.4 Thermostatic Blending Valve
integral vapour barrier (Dunlop Armourflex/ Where a thermostatic blending valve is fitted,
Foamflex or equivalent and approved).
• Updated water-log-book to be provided by i.e for the knee operated whb, etc, this MUST
be installed not more than 2 metres from the
main contractor in O+M manual.
• Stop tap location to be recorded in O+M appliance which it serves, to comply with water
industry regulations.
manual.
• Where a hood type pass through dishwasher
is to be installed the water supply requirement
is a 22mm connection via 2m flexible hose
(female termination). Water supply 15 C to
o
60 C (2 to 8 clark max) at 0.4 to 10.0 bar
o
o
o
max.
• For dishwashers (and washing machines) the
contractor must allow for foul water drain
connection as appropriate.
• L8 risk assessment and management plan
to be issued by the Principal Contractor on
project handover.

4.6.2 Cold Water 3 September 2018
4.6.3 Sink Waste 30 May 2018
4.6.4 Thermostatic Blending Valve 30 May 2018