FläktGroup eCO Premium, Installation And Maintenance Manual

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eCO Premium™ - Installation & Maintenance 36
FläktGroup DC_9604GB_20190327_R6 Specifications are subject to alteration without notice
17. INSTALLATION AND FITTING INSTRUCTIONS FOR DUCTED ELECTRIC PRE-HEATER
INSTALLATION, FITTING AND MAINTENANCE INSTRUCTIONS FOR DUCTED ELECTRIC PRE-HEATER
The electric pre-heater is to prevent frost damage to the heat
exchanger and to bring the temperature up to its minimum oper-
ating level.
FITTING
This is a ducted pre-heater that is fitted to connecting duct work
and is connected to the supply inlet spigot using appropriate
number of tek screws. The air flow through the heater must be in
the direction of the arrow located on the side of the heater close
to the connection box. The heater can be fitted in either horizontal
or vertical ducting but can only be fitted in ducts that are made of
incombustible, hot and cold resistant material.
The electrical connection cabinet can be freely placed facing up-
wards or sideways to a maximum angle of 90°. Fitting with the
box facing downwards is
NOT
allowed.
The pre-heater is a stand alone device without connection to the
ISYteq Mini Control System.
The access opening in the heater must be equipped with a fixed
mesh or an intake air device which makes it impossible to touch
the element intake.
The distance from the heater to a duct bend, valve, filter, etc.,
should correspond to at least twice the duct diameter, otherwise
there is a risk that the airflow through the heater is uneven which
can cause activation of the overheating cut-out.
The heater may be insulated in accordance with valid regulations
for ventilation ducting. However, the insulation material must be
incombustible. The cover of the heater must be free from insu-
la tion so that the name plate is visible and the cover can be
removed.
The area where the heater is installed must be kept accessible to
allow replacement and servicing. The distance from the heater’s
metal casing to any wood or other combustible material must
NOT be less than 30mm.
MAINTENANCE
No maintenance is required except a periodic functional test.
OVERHEATING
When the overheating cut-out with manual reset has been ac-
tivated, the following actions should be taken: The heater must
not be interfered with in any way, such as removal of the cover,
except by an authorised electrical fitter. Turn off the mains power
and investigate carefully the reason for activation of the cut-out.
When the fault has been eliminated then the cut-out can be reset.
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