CLIVET WSAN-YMi 21, Manual For Installation, Use And Maintenance, Page: 33 / 156

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AHS
Application C
Boiler provide heat for space heating and domestic water heating. The ON/OFF of boiler controlled by unit.
NOTE
The volume of balance tank(8) should be greater than 40L(for 5~9kW unit, greater than 20L)
The drain valve (6) should be installed at the lowest positon of the system.
An independent backup heater can be selected and installed in the door.
Temperature sensor T1B must be installed at the outlet of AHS, and connect to the corresponding port in the main control board of
hydraulic module (refer to Main control board of hydraulic module), pump(10) should be controlled by outdoor unit and connect to
corresponding port in the outdoor unit (refer to chapter Electrical connections/For outside circulation pump P_o ).
See application LEGEND B