Units 18-30 Kw: Application 1 - Immergas MAGIS M4-30 Use And Installation

The following application examples are for illustrative purposes only for units 18-30 kW.

8.4 UNITS 18-30 KW: APPLICATION 1.

Space heating with a room thermostat connected to the unit.
1
1.3
1.5
1.7
1.2
1.1
Code
1 Heat pump
1.1 Pressure gauge
1.2 Pressure relief valve
1.3 Expansion vessel
1.4 Plate heat exchanger
1.5 Air purge valve
1.6 Flow switch
1.7 P_i: Circulation pump inside the unit
2 Y-shaped filter
3 Shut-off valve
4 Control panel
NOTE
The volume of the balance tank (8) must be greater than 40 L. The drain valve (6) must be installed in the lowest posi-
tion of the water system. The pump P_o (10) must be controlled by the heat pump and connected to the corresponding
port of the unit (Chap. 9.7.6 Connection for other components/For the external circulation pump P_o.
Operation of the unit and space heating.
When a room thermostat is connected to the unit and there is a heating demand by the room thermostat, the unit will start
to run to reach the nominal flow temperature of the water set on the control panel. When the room temperature is higher
than the setpoint of the thermostat in heating mode, the unit switches off. The circulation pump (1.7) and (10) also stops.
Here the room thermostat is used as a switch.
NOTE
Make sure to connect the wires of the thermostat to the correct terminals, selecting method B (see "For room thermostat"
in Chap. 9.7.6 Connection for other components). See Chap. 10.5.6 "Room thermostat" for the setting).
1.6
2 3
6 7
1.4
Assembly unit
4
S20-1
9
8.1
10
8.2
8
FHL1
Code
S20-1 Room thermostat
6 Discharge valve
7 Filling valve
8 Balance tank
8.1 Air purge valve
8.2 Discharge valve
9 Expansion vessel
10 P_o: External circulation pump
11 Manifold/distributor
FHL
Floor heating circuit
1... n
39
11
----
FHL2 ---- FHLn
Assembly unit