ELECTRICAL CONNECTIONS
1. Details of the heater’s voltage, power and overheat protec-
tion will be found on the wiring diagram attached to the
inside of the top cover, and on the rating plate on the out-
side of the top cover. Check carefully that the rated values
of the heater correspond to the selected power supply and
control equipment.
2. The heater must be connected with a cable designed for
permanent usage.
3. It must not be possible to supply power to the heater unless
the associated fan has been started (suitable interlock).
4. It must not be possible to switch off the associated fan
unless the power supply to the heater has been turned off in
advance or simultaneously (suitable interlock).
5. A multi-pole mains breaker, with a contact distance of at
least 3 mm must be permanently installed in the power
supply.
6. The installation must be carried out by an authorised elec-
trician.
7. The heater is CE-marked in accordance with European
EMC standards CENELEC EN 61000-6-2,
EN 61000-6-3 and EN 61000-3-11.
8. The heater is manufactured in accordance with good
technical safety custom within EES. Since there is no
available electrical safety standards for heaters designed
to be built into ventilation units, the heater must be tested
together with the unit into which it shall be built in.
The manufacturer of the ventilation unit is responsible
for the testing before the built-in heater is taken into use.
VEAB is not responsible for this electrical safety test.
9. The heater is equipped with at least two overheat protec-
tors (of which one can be reset manually), for the purpose
of preventing high temperatures at low airflows and of
preventing overheating in the event of a fault somewhere in
the system.
FITTING
1. The heater is designed for use in a ventilation unit. The
heater must be installed with the electrical connection box
on the side. The electrical connection box must
NOT be located downwards (underneath).
2. The element bars of the heater get very warm. The heater
must therefore be installed in such a way that the elements
can not be touched. If the heater has an inspection cover,
measures must be taken to avoid touching of the elements.
The cover is to be fastened with suitable tools and a warning
text shall be put on the top of the cover.
3. A sign with a suitable warning text against covering and
blockage must be put up in the immediate vicinity of the
air outlet.
4. The minimum distance from or to the nearest duct bend,
valve, filter, fan motor etc. should correspond to the
diagonal dimension of the heater, i.e. from corner to corner
in the duct part of the heater. If this is not the case there is
a risk that the airflow through the heater is uneven, which
can activate the overheat protection. Example: if the dia-
gonal dimension of the heater is 400x300 mm, the mini-
mum distance must be 500 mm. If the distance is shorter
measures must be taken to spread the airflow even and also
to prevent that heat from the elements affects materials
sensible to heat, such as filters and fan motors.
5. The heater, or the unit into which the heater is installed,
must be insulated in accordance with current local regula-
tions for ventilation ducting. The insulation must be of an
incombustible material. No insulation may be used on the
top cover. The rating plate must be visible and it must be
possible to remove the top cover.
6. The heater must be available for replacement and mainte-
nance.
7. The distance from the heater’s sheet-metal casing to any
wood or other combustible material must NOT be less than
100 mm.
8. The airspeed through the heater must be at least 1,5 m/s
and the output operating temperature should not exceed
50° C. If these values are not maintained, there is a risk that
the overheat protection is activated.
MAINTENANCE
No specific maintenance is required. However, a periodic fun-
ctional check is recommended. Any work on the heater, such
as removing the cover, is combined with a risk of touching live
voltage parts which can cause danger to life, and must there-
fore be carried out by an authorised electrician only.
OVERHEATING
When the overheat protection with manual reset is activated,
the following procedure should be followed:
1. Any work on the heater, such as removing the cover, is
combined with a risk of touching live voltage parts, which
can cause danger to life, and must therefore be carried out
by an authorised electrician only.
2. Switch off the power supply.
3. Carefully investigate the reason(s) why the overheat
protection is activated.
4. When the fault that caused the problem has been resolved,
reset the protection manually using the button on the cover
of the heater.
GB
3
VRA
