references
Split refrigeration units and heat pumps
AIRDUO COMPACT ST/CT
ELECTRICAL
CONNECTIONS
Outdoor unit RST/IST Indoor unit RCT/ICT
4 Indoor fan power supply 5 6 7 11 12 13 14 15 16 17
Indoor fan thermal protection Outlet T probe Return or ambient T probe (opt.) Clogged filter detector (opt.) Air flow control (opt.) Without neutral (std) and/or starter (opt.) HWC 24Vac signal (opt.) HWC valve (opt.) Electrical heaters (opt.) Electrical heaters safety (opt.)
Power supply 1 TCO user terminal 2 pGD1 maintenance terminal (opt.) 31 Remote on/off (opt.) 32 Main failure signal (opt.) 33
No. 1 2 4 5 6 7 11 12 13 14 15 16 17 31 32 33 Power supply
RST/IST - RCT/ICT 400 III (±10%)
80
90
3 + GND
120
160
TCO user terminal connection Indoor fan power supply Thermal relay signal of the indoor fan Outlet temperature probe Return or ambient temperature probe (optional)
2 wires for power supply 230V + 1 shielded cable for communication type AGW20 / 22 (1 braided pair + drainwire + shielding) 3 + GND 2 wires 2 wires 2 wires 2 wires 2 wires
Unit without neutral (std) and/or soft starter (opt.) HWC 24 Vac signal (optional) HWC valve (optional) Electrical heaters (optional) Safety thermistors of electrical heaters (optional) pGD1 maintenace terminal connection (optional) Remote on/off (optional) Main failure signal (optional)
1 wire 2 wires 1 wire 3 wires (per stage) + GND 2 wires telephone cable 6 wires standard (RJ12 connector) 2 wires 2 wires
If the unit is going to be installed in an industrial environment with a high level of electromagnetic interference, it is recommended to shield the cables of the thermostat control. The power supply for the electrical heater must be protected by an automatic switch and/or fuses to be foreseen by the installer.
588
HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A