Robur GAHP-W, Инструкция по установке, эксплуатации и обслуживанию, Страница: 39 / 68

Electrical connections
Ed. 2014-08
37
3.2 OPERATION OF THE APPLIANCE THROUGH R-W-Y CONTACTS ON
THE ELECTRONIC BOARD (WITHOUT ROBUR OPTIONAL DIRECT
DIGITAL CONTROLLER - DDC)
Before doing any electrical connection, make sure that the unit is not powered.
Do not switch on and off the unit using the main switch indicated with the symbol
GS in Figure 15.
Label the wires you need to disconnect during service. Wiring errors can cause
improper and dangerous operation.
1. Connect the main line to the appliance as indicate in the Figure 15.
Check that the main line is 208-230 V 1ph - 60 Hz.
Keep to polarità.
2. Use a 3x16 AWG cable; 2 x 5A fuses T type OR or a 10 A circuit breaker switch.
Figure 15 - Main line conection
3. Connect the on/off switch (for example a thermostat) to the terminals R, W and Y of
the electronic board as shown in Figure 16.
•
If the unit is in heating mode/priority (see Page 45), switch on the appliance
closing the R-W contact (See Figure 16).
•
If the unit is in the cooling mode priority (see Page 45), switch on the appliance
closing R-Y contact (See Figure 16).
•
If the unit has no priority (see see Page 45), switch on the appliance closing
either R-Y or R-W contact.