Airedale Chilled Water Cassette 2kW - 11kW - Manual (Page 20)

21 Technical Manual: 6806236 0 /20
CHILLED WATER CASSETTE
The Airedale cassettes can be supplied with a micro-processor
managing system operated by an infra-red remote control
with liquid crystall display.
Integral with the unit is the room temperature probe, the
water temperature probe (cut-out thermostat), the infra-red
remote control and the electronic board with RS485
communicating connection which can control up to 20 units.
The electronic board is of master/slave mode and the serial
communicating connection allows the serial connection; in
the master/slave connection of more units, it is recommended
to install the infra-red receiver on the master unit.
Control operations:
- Temperature set.
- Fan speed switch with possible automatic speed selection.
- 24 hours on/off program.
- on/off cooling valve control.
- on/off heating valve control.
- Control of the valves only or of the valves and the fan together.
- Valve control of 2 or 4 pipe systems with winter/summer switch on the infra-red control.
- Valve control of 4 pipe systems with automatic heating/cooling mode selection with 2°C dead zone.
- Activating the sensor connected to the T3 contact of the board (non active in the standard configuration), it works
like a cut-out thermostat: fitted between the coil fins it stops the fan when the water temperature is lower than 38°C
and it starts the fan when the water temperature reaches 42°C.
Unit with infra-red remote control