Maintenance; General; Maintenance Instruction; Filling The Installation - Baxi 424 Combi 2 User Manual

7 Maintenance

7 Maintenance
7.1

General

7.2 Maintenance instructions
Water pressure
Fig.8
18 400 Combi 2
The boiler does not require any special maintenance. However, the boiler
must be serviced annually in accordance with the Installation and Service
Manual and the relevant section of the Benchmark Service Record com­
pleted in order to maintain the warranty.
Note
Taking out a maintenance contract is recommended.
Caution
Maintenance operations must be performed by a qualified compe­
tent person.
Use only BAXI genuine spare parts.
The painted panels should be wiped with a damp cloth and then dried
completely. DO NOT USE ABRASIVE CLEANING AGENTS.
To ensure continued safety, functionality and efficiency, the boiler must
be inspected annually by the installer/service engineer in order to ensure
the performance of the product constant over time, we recommend
having the boiler's energy efficiency checked annually by a qualified
technician. Accurate maintenance is always a reason for safety and
savings in the management of the system.
Periodically check that the pressure shown on the display with the system
cold is between 1 - 1.5 bar. If it is lower, act on the system filling tap. It is
advisable that the opening of this tap is carried out very slowly in order to
facilitate degassing.
Important
The boiler is equipped with a hydraulic pressure switch which
does not allow the boiler to operate in case of low pressure.
If frequent pressure drops should occur, call the installer/
service engineer
7.2.1

Filling the installation

If the water pressure is too low, the system must be re-pressurised.
The normal operating water pressure is between 1 and 2 bar. If the pres­
sure exceeds 3 bar the safety pressure valve will operate and a fault is in­
dicated. Ensure that the temporary filling loop is disconnected. Contact
your installer.
It may be necessary to repressurise the system occasionally (when the
water pressure falls below 0.7). A filling device (the filling loop) will be
fitted on the system. This will be on the boiler itself, or on pipework near to
the boiler. Seek advice from your installer.
Note
If the water pressure requires regular re-pressurising a fault
or leak is indicated. Seek advice from your installer.