Connection To Water System; Connection To Humidifier System; Checking Operation - BROMIC RDV Série Notice De Mode D'emploi Et D'entretien

If a cold room includes more units, each unit shall be provided with its own safety device.
Connect the unit paying attention to the colours of the supply cable wires:
WARNING
Any defective electrical part should be replaced by trained personnel exclusively.
The electric connection should be effected by qualified personnel.
7.2

Connection to water system

This connection is only necessary if the unit has a water-cooled condenser. It is effected by following the
indications of the tags positioned by the inlet and outlet pipes. Connection pipes should never be smaller in
diameter than those on the unit. A minimum water pressure of 1 bar is required for correct operation of the
unit.

7.3 Connection to humidifier system

Connect humidifier water supply pipe: it is necessary to use a pipe with a diameter of at least 10mm.,
and pressure in the water circuit must be between 1.5 and 3.0 ATM.
Install a pressure reducer and a filter before water inlet.
WARNING
To prevent water from spilling out of the humidification tray, on first starting set the
pressure reducer to minimum value and close the water cock inside the unit.

Checking operation

When starting the unit check that the Automatic Humidification System operates correctly.
Act as follows:
a) set the pressure reducer to minimum value and close the water cock inside the unit (see above);
b) when the unit is operating, increase the humidity set value so that humidification is required (note: the set
cold room temperature must have already been reached);
c) check operation of the humidification heater;
d) when the tray is empty and the heater operating, check that water solenoid valve lets water flow out;
e) open water cock slowly, letting water flow out sufficiently but slowly;
f) when the humidification thermostat bulb is immersed, check that the solenoid valve is de-energised.
Periodically check that no excessive scales form on humidification heater and on thermostat bulb which could
result in:
a) burnt humidification heater,
b) malfunctioning of humidification thermostat with consequent uncontrolled water level in tray.
In case of scales clean the parts involved using special scale-removing products available on the market.
WARNING
Cleaning operations must be carried out only when the unit is off.
a) 230V/1/50-60Hz
b) 230V/3/50-60Hz
c) 400/3/50 Hz
3 wires
4 wires
5 wires
28
Blue = Neutral
Yellow/Green = Ground
Brown = Phase
Blue = Phase
Yellow/Green = Ground
Grey = Phase
Black = Phase
Blue = Neutral
Yellow/Green = Ground
Brown = Phase
Grey = Phase
Black = Phase