WATER SYSTEMS & PIPEWORK
FILLING PRIMARY SEALED SYSTEMS:
• Filling the system must comply with one of the
methods shown opposite.
• The filling point must be at low level and must
never be a permanent direct fixing to the
mains water supply.
• Filling links must be WRAS approved.
SHOWERS/BIDETS:
• If a shower head can be immersed in water or
comes closer than 25mm from the top edge
of a bath or shower tray spill over level then
an anti-siphon device must be fitted to the
shower hose.
Only thermostatically controlled showers are
suitable for use with this appliance.
• Bidets with direct hot & cold mains water can
be used (with the approval of the local water
authority) and must be the over rim flushing
type with shrouded outlets to prevent the
fitting of hand held sprays.
DOMESTIC HOT WATER:
Plastic pipework
• Any plastic pipework used for the DHW
system must have a polymeric barrier,
complying with BS 7921 and installed to
BS 5955 with 1000mm (minimum) length
of copper or stainless steel pipe connected to
the boiler.
• Before installing plastic pipework, the pipe
manufacturer’s literature should be consulted.
• To prevent the temperature & pressure
exceeding the limits advised by the pipe
manufacturer, a pressure reducing valve must
be used to prevent the incoming water
pressure exceeding 3 bar (maximum). Also a
mini expansion vessel must be fitted to
absorb the expanding water and a blending
valve set to 60°C must be fitted before the
DHW plastic pipework.
• When selecting plastic pipework for use with
domestic water supply, it should be ensured that
it is compliant with all current local & national
legislation & regulations, including building
regulations part G, BS 7291 - 1,2 & 3: 2006,
BS 8000 - 15-15: 1990 and information.
GENERAL:
• Taps and mixing valves must be capable of
sustaining a pressure up to 10 bar in
accordance with the Water Regulations as
they will be operating at mains water pressure.
• Hot water temperature and flow rate are
affected by the size and insulation of pipework
making up the distribution system and are
controlled by the hot water tap and the water
main inlet pressure. A mixing valve can be fitted
if a more permanent setting is required.
• If using more than one outlet at once causes
water flow starvation, fit flow balancing valves
or Ball-O-Fix valves to the appropriate outlets.
WATER SYSTEMS & PIPEWORK
INSTALLATION & SERVICING INSTRUCTIONS FOR GREENSTAR HEATSLAVE II EXTERNAL 12/18-18/25-25/32
6 720 805 210-01
13
PRE -
INSTALLATION
To Next Page
Loading...
