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SECONDARY
RETURN
COMBINATION
V
ALVE
EXPANSION RELIEF
PIPE
COLD
M
AINS-IN
22mm
DRAIN
E
XPANSION
VESSEL
PRESSURE + TEMPERATURE
RELIEF VALVE
HOT SUPPLY
22mm
TUNDISH
22mm
MAX. 100mm
FIG.
2.2
2.7 CONNECTION OF MAINS
WATER SUPPLY
For floor standing models:
On the front of the unit there is a label to identify the connection por
ts.
Please check this before making any connection to the unit.
For units up to 300 litres it is recommended that all mains cold water supply
pipe work is a minimum of 22mm, with the exception of model ST 50
ProTech where 15mm can be used. For 500 litre models the supply should
be 28mm.
An isolating valve should be installed between the cold water
supply and the cylinder f
or servicing. ALL PIPEWORK MUST BE FLUSHED
TO AVOID DAMAGE TO THE CONTROL VALVES.
Please refer to
FIGS. 2.1, 2.2, 2.3, 2.4, 2.5 for a suggested installation layout.
STD PROTECH 100
STD/STD PROTECH/ITD 125-150-210-300 DIRECT
COMBINATION
V
ALVE
EXPANSION
RELIEF
P
IPE
COLD
MAINS-IN
15/22mm
EXPANSION
VESSEL
P
RESSURE + TEMPERATURE
RELIEF VALVE
HOT SUPPLY
15/22mm
TUNDISH
15mm
22mm
MAX. 100mm
FIG. 2.1
ST P
ROTECH 50-80-100
www.tradeplumbing.co.uk Call Sales On 08708034288
www.tradeplumbing.co.uk Call Sales On 08708034288