Application - mundoclima AEROTHERM MAM-V9 Serie Manual De Usuario E Instalacion

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.pump(10) should be controlled by outdoor unit and connect to corresponding port in the outdoor unit(refer to 9.7.6
Connection for other components/For outside circulation pump P_o).
Pump operation and space heating and cooling
The unit will switch to either heating or cooling mode according to the setting of room thermostat. When space
heating/cooling is requested by the room thermostat (5), the pump will start operating and the unit (1) will switch to heating
mode/cooling mode. The unit (1) will operate to achieve the target cold/hot water leaving temperature. In the cooling mode.
the motorized 2-way valve (19) will close to prevent cold water running through the floor heating loops (FHL).
Make sure to connect the thermostat wires to the correct terminals and to configure the ROOM THERMOSTAT in the
wired controller correctly (see 10.7 Field settings/ROOM THERMOSTAT). Wiring of the room thermostat should follow
method A as described in 9.7.6 connection for other components/For room thermostat.
Wiring of the 2-way valve (19) is different for a NC (normal closed) valve and a NO (normal open) valve! Make sure to
connect to the correct terminal numbers as detailed on the wiring diagram.
The ON/OFF setting of the heating/cooling operation cannot be done on the user interface, the target outlet water temperature
should be set in the user interface.
Domestic water heating
Domestic water heating is as described in 8.2 Application 2.

8.4 Application 4

Space cooling and heating without a room thermostat connected to the unit. The temperature sensor Ta attached in the user
interface is used to control the ON/OFF of the unit. Heating is provided through floor heating loops and fan coil units. Cooling is
provided through fan coil units only.
1
1.6 1.7
1.5
1.8
1.3
1.4 1.2
NOTE
CAUTION
1.1
2 3
6 7
8
106
4
9
FCU1
8.1
19
10
8.2
FHL1
11
17
----
FCU2 ---- FCUn
11
----
FHL2 ---- FHLn