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14.9 Air
circulation:
Some unit air heaters have fans connected to
a remote override switch. This enables cool
air to be used for circulation purposes when
the air heater is not used for heating purposes
e.g. in summer months.
a. Switch ON mains electricity supply to the
air heater;
b. Switch ON the manual override switch on
remote control panel;
14.10 Important:
In the event that the thermal overheat (limit)
control LC3 has operated requiring relighting
the air heater, wait close by the air heater for
15 minutes after relighting to ensure normal
operation.
If the overheat control locks out again, turn
OFF
the air heater and call for service to
establish the reason and rectify the fault.
14.11 Euroventer:
Installations may include an Euroventer. This
device is an electrically powered fan fitted into
the flue system. Its inclusion will be obvious
when a Euroventer is fitted the control
switching of the air heater as described in 9.6
above is via the
Euroventer, which is operationally proven prior
to the burner control being activated.
14.12 Maintenance & servicing:
Maintenance and service must only be carried
out by competent persons. Periods between
service are dependent upon the local
environment where the air heater is installed.
Regular inspection is recommended initially to
ascertain routine service intervals. Where
local environmental circumstance change e.g.
different processes being carried out in a
factory, the service interval should be
reconsidered. Ask your installer, service
undertaking or the manufacturer about
inspection and service intervals.
The service engineer is asked in section 9 of
this document to advise the user of his
recommended frequency for servicing after
carrying out the first service.
The air heater should be serviced at least once
every heating season. Ensure that any
combustion air vents fitted to the building in
which the air heater is installed are unblocked.
Periodically check to ensure that the outer
casing of the air heater is clean, excessive
dust might constitute a hazard.
Subject to modifications
