COSMOGAS ECOTWIN, Инструкция по установке, эксплуатации и обслуживанию, Страница: 24 / 88

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COSMOGAS
Ecotwin
5 - OPERATION
19.- Access the boiler (Mydens B/Novadens B/Q30B), disable
the outdoor reset and set the heating to a set point greater
than or equal to that of the heat pump as set in the previous
step in point 11.
After this configuration, the unit is able to:
- Carry out the Heating / Cooling switchover using the manual
selector “41” (switch to be made at each season change).
The call relating to “Zone 2” will be made by the room
thermostat “42”.
- Be called in heating / cooling on “Circuit 1” by closing the
room thermostat “42” and input “19”.
- Switch between heat pump and boiler when the outside
temperature drops below a certain value.

The closure of input “19” alone is unable to start Zone 1.

Since it is necessary to close both the room thermostat
“42” and the input “19”, the call of Zone 1 inevitably also
starts Zone 2.
- Domestic hot water production in priority over heating / cooling;
- Call the boiler as a supplement to heating and domestic hot
water production whenever the heat pump fails to reach the
domestic hot water set point and / or the heating set point
within a certain period of time.