Ariston Unvented Hot Water Storage Cylinders Instructions For Installation And Use Manual page 7

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STI/STI P T /ITI 125-150-210-300 I
RO ECH
COMBINATION
VALVE
HOT SUPPLY
22mm
EXPANSION RELIEF
PIPE
SECONDARY
RETURN
TUNDISH
FLOW
22mm
DRAIN
RETURN
MAX. 100mm
500 STI P
COLD
MAINS-IN
28mm
EXPANSION
VESSEL
HOT SUPPLY
28mm
PRESSURE +
TEMPERATURE
RELIEF VALVE
ZONE
VALVE
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NDIRECT
COLD
MAINS-IN
22mm
EXPANSION
VESSEL
PRESSURE + TEMPERATURE
RELIEF VALVE
ZONE
VALVE
F . 2.3
IG
T
RO ECH
COMBINATION
VALVE
EXPANSION RELIEF
PIPE
SECONDARY
RETURN
TUNDISH
FLOW
22mm
DRAIN
RETURN
MAX. 100mm
F . 2.5
IG
500 STD P
RO
COLD
MAINS-IN
28mm
EXPANSION
VESSEL
HOT SUPPLY
28mm
PRESSURE +
TEMPERATURE
RELIEF VALVE
EXPANSION RELIEF
SECONDARY
RETURN
DRAIN
T
ECH
COMBINATION
VALVE
PIPE
TUNDISH
22mm
MAX. 100mm
F . 2.4
IG
7