Installation instructions E-SHR series page 23
The following components require extra attention during the
service procedure and when dismantling and reassenbling
the burner:
- ensure that the orange gasket that fits around the
ceramic brick has not heat hardened or perished in any
way, if it has, it is essential that the gasket is replaced
before continuing to reassemble the boiler. If in any
doubt replace the gasket;
- make sure that the burner gasket is fitted onto the heat
exchanger precisely;
- make sure that the fan unit clamping rods have been
pushed backward sufficiently and that they have again
been turned ¼ turn;
- make sure that the gas connection under the gas block
is tightened;
Following maintenance or other activities;
always check the installation of all parts through
which gas flows (using leak-search spray).
The siphon
In order to check the siphon for contamination the
following actions must be carried out:
- make sure that the boiler is off by isolating the boilers
electrical supply;
- unscrew the screw in the bottom of the condensate
tray of the heat exchanger where the siphon is fixed;
- pull the siphon downwards until it is released from the
condensate tray;
- pull the drain pipe of the saftey valve out of the siphon;
- turn the siphon carefully out of the boiler;
- clean the siphon and re-fill with water.
Refitting is done in reverse order.
13.3 Further checks
Checking the ionisation current.
- ionisation determines if there is a flame present with
correct combustion. The measurement is done by means
of connecting a micro Ampere gauge in series with the
ionisation thread. The minimum allowed ionisation is 2 µA.
The boiler will modify its load anyway if the ionisation
reaches the bottom limit of 2 µA.
Checking by means of a visual inspection.
- A visual inspection entails viewing and checking of a
number of components with regard to their functioning.
The safety valve may not show any traces of leaks. The
waste trap should be clean.
The central heating water filter only requires cleaning if
the circulation pump is adjusted at maximum speed
and the maximum
D
T is exceeded.
Following maintenance or other activities,
always replace the housing and secure it with
the screws.
Complete the Benchmark Service Record Log
Book as required and hand back to customer.
