1
1.6
1.5
1.4 1.2
1.3
1.8
1.7
1.1
FHL1
FHL2
FHLn
----
----
FCU1
FCU2
FCUn
----
----
19
2 3
6
7
8.1
8.2
8
9
10
11
11
4
17
16
17
NOTE
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 position 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).
CAUTION
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.
• 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).
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.
Содержание Aquantia KHPS-MO Series
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