BENSON HEATING LTD G20 I2H, User Instructions

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Heat Exchanger
The heat exchanger requires a visual
inspection at least once per year, this should
be accompanied by cleaning.
It is recommended that a flue brush and
vacuum cleaner are used to facilitate this.
Access to the heat exchanger is gained
through the removal of the rear upper panel
and heat shield.
Servicing and cleaning should be performed
as follows.
(a) Remove brass nuts and cover from heat
exchanger end assembly to expose heat
exchanger tubes.
(b) Remove any accumulated deposits from
the tubes by pushing through the full length
with a flue brush.
(c) The flue brush should be withdrawn so as
to pull any deposits back into the bottom of
the flue box where they can then be removed
by using a vacuum cleaner.
(d) Particular attention should be paid to the
upper internal surfaces of the tubes, where
through convection heavier deposition is
likely to occur.
(e) Any deposits which may have
accumulated within the combustion chamber
can be removed with a vacuum cleaner once
the burner is removed.
Note
It is most important that a build up of
deposits is not allowed to occur as this can
have an adverse effect upon the efficiency of
the heater and reduce the life of the heat
exchanger.
(f) The heat exchanger and combustion
chamber should be visually inspected for
signs of splits, cracks, and distortion
(g) All gaskets should be checked to ensure
that they continue to provide a gas tight seal,
if there is an element of doubt then they
should be replaced.
If the condition of the heat exchanger gives
cause for concern the Service Department at
Benson Heating should be advised pending
a more detailed examination.
Electrical Supply
All connections must be checked to ensure
that they are secure, and free from corrosion.
Terminals and connections should also be
checked to ensure that no stray strands are
bridging terminals.
Electrical continuity should also be checked.
Gas Supply
The gas supply pipework, and fittings should
all be inspected to ensure that they are free
from corrosion, and to ensure that where
brackets have been fitted these remain
secure and offer adequate support.
The system should be soundness tested in
accordance with Institute of Gas Engineers
recommendations detailed in
UP-1 and UP-2.
Burner
Service requirements for the burner fitted to
the cabinet heater are covered in the
separate manual prepared by the burner
manufacturer.
Note
It is most important that the burner is
serviced regularly and in accordance with the
manufacturers instructions.
Air Delivery System
A visual inspection should be undertaken to
ensure that the air delivery system is in good
order, and that it remains adequately
supported and that the various joints are
effectively sealed.
Report
A full and detailed service report should be
prepared, it is advised that the report is not
completed until the heater has been re-
commissioned, where upon the completed
report can then be run through with the user.
5.3 Service Re-commissioning
The heater should be re-commissioned as
follows, as per section 4.1 through to section
4.4 inclusive.
This must be regarded as a necessary part
of the heater service by the servicing
engineer.