When the condensate water out of the
cleaning tube of the syphon is dirty, the
syphon requires cleaning.
Rinse the syphon through the syphon flush
connection or with the burner dismounted
flush cold water through the syphon heat
exchanger connection or with access to the
flue, flush the heat exchanger and syphon
through by pouring water down the 70mm
inner flue duct.
15.
After flushing ensure that the
condense syphon is refilled with water,
otherwise flue products may be passed
through the condensate pipe-work into the
building.
Take off the plastic mixing box at the inlet
side of the fan, inspect the fan impeller for
damage. When the impeller of the fan is
dirty every blade has to be carefully cleaned
until the original plastic material is clearly
visible.
When dirt is left on the blades the fan will
run out of balance and, due to the fast fan
speeds (>6000 rpm), additional and
unnecessary loads will be placed on the fan
bearings significantly reducing the lifetime of
the component.
Check the distance of the electrode to the
burner; this should be a 3mm ~ 4mm gap.
Bend the electrode, without touching the
burner surface, very carefully until a space
of 3mm ~ 4mm is achieved.
Check the seals on the gas connections
and ensure that the gas service is sound by
completing a gas soundness test.
Check the wiring and fuse at the spur is no
greater than 3amp.
35.2
Pre-preventative Maintenance
Depending on the result of the inspection,
further action may be required to complete
the pre-preventative maintenance schedule.
Pre-preventative maintenance is a unique
feature of all eco hometec boilers and is
incorporated to further enhance their
excellent reputation for reliability.
The following components should be
replaced on an hours run basis.
Connect the P.C. Notebook to the boiler.
Following the instructions in the P.C
servicing software down load a readout of
the service log; pay particular attention to
the various lockouts and re-ignitions.
Look carefully at the service screen of the
P.C. notebook and identify and replace any
parts which have caused any problems.
The pump ~ should be replaced after
50,000 running hours (the total of CH and
HW on 50% load), or when the pump is
noisy, especially when the running time is
more than 40,000 hours, or if the pump is 5
years or older.
The actuator on the three-way valve ~
should be replaced after 50,000 switches.
The fan ~ after 40,000 running hours.
35.3
Service records
Complete the appliance service record, ask
the user to sign it and hand them the
second copy. Return the top copy to eco
hometec and service company or service
engineer to retain copy on file for their/your
records.
Complete an appliance service label and
attach to underside of appliance case.
36. Decommissioning
the
boiler
When decommissioning the boiler,
precautions should be taken to avoid frost
damage. Therefore it is essential that both
the boiler and the central heating system
are completely drained down.
To do this remove the front casing and
connect a hose to the central heating drain
point. The system should be vented by
opening the DHW valve and /or the manual
air vent on the central heating circuit.
Tag the boiler “DO NOT USE SYSTEM
DRAINED” and remove the fuse at the
isolating switch.
EC 16~38 Installation Manual page 55
