Units 4-16 Kw: Application 2 - Immergas MAGIS M4-30 Use And Installation

8.2 UNITS 4-16 KW: APPLICATION 2.

The ROOM THERMOSTAT control for space heating or cooling can be set on the control panel. It can be set in three
modes: MODE SET/ONE ZONE/DOUBLE ZONE. The unit can be connected to a high-voltage room thermostat and
to a low-voltage room thermostat. See Chap. 9.7.6/5) "FOR ROOM THERMOSTAT" for wiring (Chap. 10.5.6 "ROOM
THERMOSTAT" for the setting).
8.2.1 One Zone Control
Outdoor
Code
1 Main unit
2 Control panel
4 Balance tank
4.1 Automatic air purge valve
4.2 Discharge valve
5 P_o: External circulation pump
10 Expansion vessel
• Space heating.
One zone control: the ON/OFF signal is controlled by the room thermostat, heating or cooling modes and the outlet
water temperature are set on the control panel. The system is ON when "H" on the thermostat closes (*). When "H" on
the thermostat opens, the system switches OFF.
• Circulation pumps operation.
When the system is at ON, which means "H" on the thermostat closed, P_o starts running;
When the system is OFF, which means "H" on the thermostat open, P_o stops.
(*): By H closed we mean: closed contact between H and L1 for the high-voltage room thermostat or closed contact be-
tween HT and COM for the low-voltage thermostat.
S20-1
Modbus
Assembly unit
Indoor
5
Code
12 Filter (accessory)
14 Cut-off valve
15 Filling valve
16 Discharge valve
19 Manifold/distributor
S20-1 Room thermostat
FHL
Floor heating circuit
1... n
33
Assembly unit