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7
PRESSURE GaUGE (SEaLED SyStEm
BOILERS OnLy)
Ensure that the pointer on the gauge is reading
between 0.5 and 1.0 bar when the system is cold.
The red indicator can be set to mark this position.
The pressure will rise when the system heats up.
Excessive pressure on the gauge may
indicate that the expansion vessel
requires recharging with air. Contact
your Installer or Service Engineer who
will check the air charge in the
expansion vessel.
Your Service Engineer must check the
air charge on every service – as
detailed in the information given on the
front of the expansion vessel – and record the
pressure on the service log at the front of this
handbook.
FILLInG LOOP (SEaLED SyStEmS OnLy)
Your Installer should show you how to top up the
system using the filling loop, either located in the
boiler or on the system pipework. Topping up will be
necessary for example when a radiator has been
removed for decorating or air is bled from a radiator.
Frequent topping up may indicate that there is a leak
on the heating system or one of its components.
Contact your Installer or Service Engineer to rectify
the problem. Frequent topping up without tracing or
rectifying the cause may result in internal damage to
the boiler and its components, which would not be
covered under the manufacturer’s warranty.
Filling Loop
fitted in boiler.
