Connection To Mains - VEAB Heat Tech VFLPGV-MODBUS Manuel

VFLPG / VFL / VTL/VRA-MODBUS

Connection to mains

1. The duct heaters are designed to operate on single phase, two phase, or three phase alternating current. See the
wiring diagram for the particular heater and the electrical data on the rating plate placed on the cover of the duct heater.
2. The duct heater must be connected to the mains supply with a fixed installed round cable. The heater must be
equipped with a cable grommet or cable fitting designed for the cable, which ensures that the electrical protection
class of the heater is retained. The standard design is IP43. Electrical protection class IP55 can be delivered if
required, in which case this is specified on the cover of the heater. Design IP55 is delivered with factory-mounted
cable fittings.
3. It must not be possible to switch on the power to the element unless the fan has started earlier or starts simultaneously.
4. It must not be possible to switch off the power to the fan unless the power to the element has been switched off earlier
or is switched off simultaneously.
5. An all phase breaker with a contact gap of at least 3 mm must be included in the fixed installation.
6. The installation must be carried out by an authorised electrical fitter.
7. The duct heater is equipped with, at least, two overheating cut-outs (of which one is manual reset), to prevent
overheating when the airflow is too low or in case of a fault in the system.
8. A drawing must be attached inside the fuse box or on the wall of the service room. The drawing shows the rating of
the duct heater and its location in the building, together with information about the measures to be taken if the
overheating cut-outs is activated.
9. The duct heaters are designed in accordance with the following standards:
SEMKO 111 FA 1982 / EN 60335-1 / EN 60335-2-30.
10. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not
play with the appliance.
Fitting
1. The heater is designed to be mounted in a ducting. The heater is meant to be fixed to the ducting by means of screws
or guide joint.
2. The air must flow through the heater in the direction indicated by the arrow on the lid of the connection box.
3. The heater can be fitted in either horizontal or vertical ducting with the connection box facing sideways. Fitting
with the connection box facing upwards or downwards is NOT allowed.
4. The access opening to a room must be equipped with a fixed mesh or an intake air device which makes it impossible
to touch the heating elements.
5. A warning sign must be attached close to the air outlet, stating that the air outlet must not be covered.
6. The distance from (to) the heater to (from) a duct bend, valve, filter, etc., should correspond to at least the diagonal
dimension of the heater, i.e. from corner to corner in the duct part of the heater. Otherwise there is a risk that the
airflow through the heater will be uneven which can cause activation of the overheating cut-out.
Example: Duct dimension 800x400mm result in a distance of at least, approximately, 900mm.
7. The duct heater may be insulated in accordance with valid regulations for ventilation ducting. However, the insulation
must be incombustible. The insulation must not cover the lid, since the rating plate must be visible and the lid must be removable.
8. The duct heater must be accessable for replacement and inspectio.
9. The distance from the heater metal casing to any wood or other combustible material must NOT be less than 100mm.
10. The maximum ambient temperature allowed is 30°C.
11. The maximum output air temperature allowed is 40°C.
Maintenance
No maintenance is required, except for a periodic functional test.
Overheating
If the overheating cut-out with manual reset has been activated, the following should be observed:
1. Only authorized electricians are allowed to remove the lid.
2. The mains supply voltage must be switched off.
3. Investigate carefully the reason for activation of the cut-out.
4. When the fault has been eliminated, the cut-out can be reset.
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