Immergas MAGIS M4-30 Use And Installation page 36

The floor heating circuits require a lower water temperature in heating mode than the radiators or fan coil unit. A mixing
kit is used to reach these two set points to adapt the water temperature based on the requirements of the floor heating
circuits. The radiators are connected directly to the water circuit of the unit and the floor heating circuits are located after
the mixing kit. The mixing kit is controlled by the unit.
CAUTION
1) Make sure to connect terminals SV2/SV3 correctly in the control panel; see Chap. 9.7.6/2) for the 3-way valves SV1,
SV2 and SV3.
2) Connect the thermostat cables to the relative terminals and configure the ROOM THERMOSTAT correctly in the
control panel. Wiring of the room thermostat should follow the A/B/C method as described in Chap. 9.7.6 "Connec-
tion for other components/5) for the room thermostat.
NOTE
1) Zone 2 can only run in heating mode. When cooling mode is set on the control panel and Zone 1 is OFF, "CL" in
Zone 2 closes, the system remains OFF. The wires of the thermostats for Zone 1 and Zone 2 must be installed correctly.
2) The drain valve must be installed at the lowest position of the pipe system.
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