VEAB VFLPG Series, Manual

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5
VFLPG / VFL / VTL
Connection to mains
Fitting
Maintenance
Overheating
1. The duct heater is designed to operate on single phase, two phase or three phase alternating current. See further the wiring
diagram for the particular heater and the electrical data on the ratings plate, placed on the lid of the duct heater.
2. The duct heater must be connected to the mains supply with a fixed installed round cable. Appropriate cable glands must be
used to retain the electrical protection class. The standard design is IP43. The IP55 design can be manufactured if required,
in which case this is specified on the rating plate. The IP55 design is delivered with factory mounted cable glands.
3. Duct heaters of type -MQ... has a built in electronic interlocking airflow sensor that ensures that the heating elements will not
actuate, unless there is an appropriate airflow through the duct heater. The inlet air must be filtered to reduce the risk of
contamination of the airflow sensor
4. Duct heaters of type -MT... does not have any built in interlocking device, so it must not be possible to supply power to the
heater unless the associated fan has been started in advance or started at the same time. Furthermore, 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 turned off at the same
time. If the rated power is higher than 30kW we recommend that the heater is being turned off, at least 3 minutes in advance,
i.e. an after-blow time of at least 3 minutes, before the fan is stopped. This is to ensure that the overheat protection is not
activated by the after-heat. The air speed through the heater must be at least 1.5 m/s.
5. An all phase switch must be included in the fixed installation.
6. The installation must be carried out by an authorized electrician.
7. The heater is S-marked, CE-marked and EMC-marked and designed in accordance with the following standards:
SEMKO 111 FA 1982 / EN 60335-1 / EN 60335-2-30 / EN 61000-6-2 / EN 61000-6-3 / EN 61000-3-11.
8. 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.
9. 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.
10. Since the sensor circuitry, for heaters type -MTEM/-MTEML/-MQEM/-MQEML with rated current 40A, is not galvanic separated
from the mains supply, care must be taken when sensors/set value adjuster are connected due to the mains voltage level.
11. For heaters type -MTEM/-MTEML/-MQEM/-MQEML with mains voltage rated >415V 3~ ( 40A), the duct sensor must be fixed to
the duct, in such a way that it can not be removed from the duct without using tools, as described on page 20, furthermore the
room sensor/set value adjuster, must be of type TG-R930.
12. 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.
.
≤
≤
1. The heater is designed to be mounted in a ducting. The heater is meant to be fixed to the ducting
.
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 allowed. NOT
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, if meshes is not fixed to the heater already .
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, 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 inspection.
9. The distance from the heater metal casing to any wood or other combustible material must
be less than 100mm.
10. .
11. .
NOT
The maximum ambient temperature allowed is 30°C
The maximum output air temperature allowed is 50°C
by means of screws or
guide joint
i.e. from corner to corner in the duct part of the heater.
No maintenance is required, except for a periodic functional test and retightening of the mains supply terminals, at least
once a year.
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.