Herz firestar Lambda 18 - Cleaning the Flue Pipe; Filling Shaft - Filling Shaft Door; Checking the Heat Exchanger; Checking the Water Level for the Heating Unit

Fault-free operation
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Betriebsanleitung_firestar_18-40_Lambda_Englisch_V1.6 15
6.4 Cleaning the flue pipe
This should be cleaned at least once a month
using a chimney cleaning brush.
Note: Remove the flue temperature sensor before
cleaning as it could be damaged.
6.5 Filling shaft – Filling shaft
door
The filling shaft walls are not heating surfaces and
must therefore not be cleaned. The deposit arising
on the filling shaft walls is a normal chemical
process and flakes off from time to time by itself or
can be removed using the bellows (18).
Note:
For perfect functioning of the boiler the filling shaft
door must always be shut tightly.
The filling shaft door should be
tested for leaks once a year!
6.6 Checking the heat exchanger
In “hard water” areas in particular, there should be
checks on whether the heat exchanger is furred
up and has to be cleaned. Where faults are
identified, ongoing maintenance is offered, as this
may mean important safety checking for operation
in closed heating units (checking the heat
exchanger can be carried out by manually
pressing the thermal flow protection. There should
be a free flow of water into the heat exchanger).
6.7 Checking the water level for
the heating unit
Care should be taken that the required water level
or unit pressure (min. 1.5 bar in cold condition)
should be maintained in the heating unit. Regular
checks are required.
Too low a unit pressure may lead
to simmering noises or the build
up of steam bubbles in the unit.
6.8 Keeping the boiler room clean
Items that are not required for the operation or
maintenance of the boiler unit should not be
stored in the boiler room. Cleanliness and tidiness
enable good access for service and maintenance
and reduce the risk of accidents.
For reasons of fire protection and according to the
valid regulations: Only designated and permitted
materials are allowed to be stored in the boiler
room.
7 FAULT-FREE
OPERATION
To avoid fault-free operation, some basic points
should be adhered to for installation, service and
maintenance. The following table may be helpful
to the operator for rectifying any faults.
Please note that faults arising due to non-
adherence to installation and/or service
instructions, do not come under the guarantee or
warranty provisions.