22
COSMOGAS
Ecotwin
5 - OPERATION
LEGEND of Figure 5-10 and 5-11:
1 - Main electrical supply
2 - Internal electrical resistance (3 kW)
6 - Pump P1
7 - Pump P2
10 - Outdoor unit
13 - Modbus communication
15 - Enable mixing valve (M51) circuit 2
19 - Double setpoint demand
20 - Circuit 1 temperature sensor (TV1)
21 - Circuit 2 temperature sensor (TV2)
22 - Room temperature sensor (Tr)
23 - Heating/Cooling thermoregulation sensor (Tc)
24 - DHW temperature sensor (Tw)
25 - Jumper
26 - Connect to terminals “TA” of the boiler
Figure 5-10 - Hydraulic diagram with double heating/cooling circuit, DHW, buffer tank and boiler
27 - Filter
29 - Solar (optional)
30 - Domestic cold water
32 - DHW buffer tank
33 - Auxiliary heat exchanger for solar or other
34 - Boiler
36 - Heating/cooling buffer tank
37 - Boiler sensor for buffer tank
38 - Circuit 1, direct for heating/cooling
39 - Circuit 2, mixing for heating/cooling
40 - Electrical supply of outdoor unit
41 - Heating/Cooling manual selector
42 - Reversible heating/cooling room thermostat
43 - Drain valve
53 - Indoor unit
5.6 - Ecotwin with double heating/cooling circuit, DHW, a buffer tank and a boiler
