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7. START-UP AND OPERATION
Guidelines for System Connection
The connection should be executed in a way which does not induce stresses.
It is recommended to install vent valves at the highest point of the system.
The system should be executed so that, in the case of a failure, it is possible
to disassemble the device. For this purpose it is best to use shut-off valves
just by the device.
The system with the heating medium must be protected against an increase
of the heating medium pressure above the permissible value (1.6 MPa).
While screwing exchanger to pipeline - connecting stubs has to be hold by
wrench.
Start Up
Before connecting the power supply check the correctness of connection of the
fan motor and the controllers. These connections should be executed in
accordance with their technical documentation.
Before connecting the power supply check whether the mains voltage is in
accordance with the voltage on the device data plate.
Before starting the device check the correctness of connection of the heating
medium conduits and the tightness of the system.
The electrical system supplying the fan motor should be additionally protected
with a circuit breaker against the effects of a possible short-circuit in the
system.
Starting the device without connecting the ground conductor is forbidden.
Operation
The device is designed for operation inside buildings, at temperatures above
0
o
C. In low temperatures (below 0ºC) there is a danger of freezing of the
medium.
The manufacturer bears no responsibility for damage of the heat exchanger
resulting from freezing of the medium in the exchanger. If operation of the
device is expected at temperatures lower than 0º, then glycol solution should
be used as the heating medium, or special automatic systems should be used
for protecting against freezing of the medium in the exchanger.
It is forbidden to place any objects on the heater or to hang any objects on the
connecting stubs.
The device must be inspected periodically. In the case of incorrect operation
of the device it should be switched off immediately.
It is forbidden to use a damaged device. The manufacturer bears no
responsibility for damage resulting from the use of a damaged device.
If it is necessary to clean the exchanger, be careful not to damage the
aluminium lamellas.
For the time of performing inspection or cleaning the device, the electrical
power supply should be disconnected.
In case water is drained from the device for a longer period of time, the
exchanger tubes should be emptied with compressed air.
It is not allowed to make any modification in the unit. Any modification causes
in warranty loss.
Filters should be replaced on a regular basis – twice a year. Excessive soiling
of filters may cause a change of the fan airflow.
It is recommended to check the correctness of damper operation before the
heating season. In the case of any irregularities in damper operation, the
service company should be contacted. Incorrectly operating dampers are
especially dangerous in the winter season. Then a damage of the heat
exchanger may occur.
Periodic inspections
To keep proper technical parameters Flowair recommends periodic service
(every 6 months) of fan heaters on behalf of the user.
During inspections user should:
Check heat exchanger, if is it filled with dirt or dust. If necessary - use
pressurized air stream to clean the exchanger's lamellas,
Check heat exchanger, if is it filled with dirt or dust. If necessary - use
pressurized air stream to clean the exchanger's lamellas,
Check fan blades, in case of dirt use damp cloth and remove dirt,
Check bracket installation,
Check heat exchanger and hydraulic connection correctness,
Check wires insulation,
Check power supply,
Check medium flow,
Check levelling of the unit.
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