REMKO VRS 25 INOX - Manual (Page 11)

11
Fan Motor Connection
The units are completely wired at the factory.
If modifications are made or the fan motors are re-
placed, make sure that the motor is properly connected.
Gas Connection
Depending on the capacity of the unit, the required
quantity of gas must always be available and the neces-
sary gas pressure present during unit operation.
à The installation of the gas connection must be per-
formed by authorised personnel.
à Gas pressure regulators and shut-off valves are to
be supplied by the manufacturer.
à The line cross-section must correspond to the con-
nection values of the units, the total line resistance
and the gas pressure.
Heating Oil Connection
Make sure that there is an adequate supply of fuel.
à The suction line must be equipped with a valve at the
end of the hose in the tank.
à Even when outside temperatures are low, a sufficient
amount of heating oil must be able to flow freely.
Paraffin can accumulate at temperatures starting at
approximately 5 °C depending on the quality of the
heating oil.
Appropriate measures must be taken to prevent this
from happening.
Burner Installation
The forced-air burner supplied by the manufacturer is
attached to the front of the unit with a clamp flange.
You must observe the following:
à Only forced-air burners with automatic burners that
have a 5 sec. safety period may be used.
à It is not necessary to limit the capacity in single-
stage burner operation for the warm air generator.
à The burner must be adjusted to the full heat load of
the unit.
à The combustion chamber may not be operated be-
low capacity.
à The exhaust temperature may not fall below 160 de-
grees Kelvin above the room temperature.
Condensation accumulation.
à Follow the operating instructions of the burner sup-
plied by the manufacturer.
à If burners from other manufacturers are used, they
must be checked for compatibility with the unit.
G
Prior to initial operation, the gas supply line must be
thoroughly cleaned and tested for impermeability!
Starting
Fan Motor Operation
Check the drive.
1. Check that the tightening screws of the complete
drive are secure.
2. Check the initial tension of the drive belt.
3. Check the rotational direction of the fan.
Measuring the rated current and current consumption
1. To prevent inaccurate measurements, open the grille
in the air duct or the blow-out cover and attach all air
suction grilles to the unit.
2. Check the available power supply.
3. Measure the current.
– Rated current for direct start
The measured rated current may not exceed the
value on the type plate of the motor.
The thermal overcurrent relay must be adjusted to
the rated current of the drive motor.
– Rated current for Y / ∆ start.
The measured rated current may not exceed the
value on the type plate of the motor.
Multiply the rated current of the drive motor by a
factor of 0.58 and adjust the thermal overcurrent
relay to the calculated value.
Thermal Overcurrent Relay
To check the function of the overcurrent relay or its set
value, remove a fuse. If the unit is functioning and set
properly, the relay should activate after approximately
30 seconds.
Current Consumption too High
If the motor is consuming too much current despite a
proper electrical connection and adequate power
supply, the thermal overcurrent relay may not be set
higher or bypassed under any circumstances.
To correct the problem, the air intakes and outlets
(possible air compression) must be checked and
appropriate action taken.
G
Each phase should be measured separately to pre-
vent inaccurate measurements.
Important Hints about the Thermal Overcurrent Relay
The thermal overcurrent relay may only be operated
when the relay is set to manual (H). The relay may not
automatically switch on again after it has cooled.
When the relay is set to automatic (A), the possibility
that damage will occur cannot be ruled out.
There is no guarantee claim!