220
Control function
10.2.2 Water Cycle for space heating
Space heating is operated by Water Cycle 1 or combination of Water Cycle 1 and Water Cycle 2.
Cycle 1 will be direct (high temperature for radiator or fan coils operation) and Cycle 2 will be a mixing cycle in order to have
a second temperature control using mixing valve (low temperature for oor heating operation). Additionally, a motorized
valve can be added in order to close direct cycle when not in use . The oor heating loops (Cycle 2) require a lower
temperature than with radiator or fan coils (Cycle 1). To get these 2 water temperature levels, a mixing station is required.
This mixing station is controlled using the indoor unit by means of a mixing valve / additional pump (WP2) /additional water
sensor (Tow2).
Without WPc1 referring to 10.1:
WP2
Tow2
M
cycle_1_room_1
Room_amb1
cycle_1_room_2
Room_amb2
ACT1
ACT2
3wv DHW
ACT3
Vmix
cycle_2_room_1
Wired1
cycle_2_room_2
Wired2
ACT4
With WPc1 referring to 10.1: