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Installation
Connections
Gas connection
The Boiler is designed to belong to
the following categories for the use of
gas types.
Country
Categories
GB
II2H3P
II2H3B/P
Please check the Boiler name plate and
packaging to ensure that it is correct for
UK Operation and that the gas category
corresponds to one of the appropriate for
the UK.
The gas inlet must be manufactured and
measured according to the relevant
specific country regulations as well as the
maximum output of the equipment; check
also the correct calculation and
connection of the stop valve.
Before installation, the gas line should be
thoroughly cleaned, so that any residue
does not impair the functional efficiency
of the heating appliance.
Also ensure that the boiler is for the
correct type of gas to be used i.e. Natural
Gas or LPG (check the name plate in the
interior of the appliance).
Check the required gas pressure for
either natural gas or LPG.
Water connection
All connections for water and gas are
as per the illustration on page 8.
Ensure that the cold water main
pressure does not exceed 6 bar. If > 6
bar then a pressure limiter device must
be fitted.
The minimum pressure needed by the
appropriate devices for processing of
hot service water is about 0.2 bar.
On sizing the pipes and the heating
element of the Boiler, the residual
head pressure must be considered
depending on the required flow rate as
per the pump circulation curve
(see
page 14)
With Combi Boiler (type HSG) flow
limiters are built into the water switch.
This ensures a constant flow of service
water
(EURON 24 HSG = 8 Litre/Minute
EURON 30 HSG = 10 Litre/Minute).
Underfloor heating
For underfloor heating, attach a
suitable safety thermostat to the
supply. (see page 15)
Note:
High flow temperature leads to
an operating lockout of the Boiler both
in DHW and heating operation:
The error code "110" appears on the
display. Operation is resumed by
pressing RESET (6) key (see page 22),
after the flow temperature has
dropped.