
20
istor system store -
Installation and Servicing
INSTALLATION
Gas cock
(shown in the
open position)
GAS IN
ist8340
Fibre washer
IMPORTANT.
The gas service cock is sealed with a
non-metallic fibre washer so must not
be overheated when making capillary
connections.
For additional gas supply information
refer to “Gas Supply” on page 9.
1.
Extend a gas supply pipe of not less
than 15mm O.D. copper to the
boiler.
A working gas pressure of 20mbar
(8" w.g) should be available at the
boiler inlet, with the boiler firing at
full DHW output.
16 GAS CONNECTION
15 CH WATER CONNECTIONS
Central Heating connections
Refer to the Note in Frame 13 for
guidance.
IMPORTANT
Do not subject any of the isolating
valves to heat as the seals may be
damaged.
INST
ALLA
TION
Summary of Contents for istor HE260
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