EAS ELECTRIC ETHKH160 Manual De Instrucciones página 64

Outdoor
1
1 Outdoor unit
2 Indoor unit
2.1 PUMP_I (built-in circulating pump)
2.2 Plate heat exchanger
(air to water heat exchanger)
2.3 IBH (built-in backup heater)
2.4 Manometer (built-in)
2.5 Air vent valve (built-in)
2.6 Expansion vessel (built-in)
2.7 Safety valve (built-in pressure relief)
2.8 Water inlet
2.9 Water outlet
2.10 Refrigerant connections
The volume of the buffer tank(5) should be larger than 30L. The drain valve(21) should be installed at the lowest position of the water
circulating system.
The advantage of the dual set point control is that the heat pump will/can operate at the lowest required water flow temperature when
only floor heating is required. Higher water flow temperatures are only required in case fan coil units are operating. This results in a
better performance of the heat pump.
Pump operation and space heating
The pump (2.1) and (7) will operate when there is a request for heating from A and/or B. The unit(1) and (2) will start operating to achieve
the target water flow temperature. The target leaving water temperature depends on which room thermostat is requesting heating.
When the room temperature of both zones is above the thermostat set point, the units and pumps will stop operating.
Make sure to configure the room thermostat installation on the user interface correctly. Refer to "FOR SERVICEMAN/ROOM
THERMOSTAT".
2
2.5
2.2
2.6
2.3
24A
2.7
24B
2.4 2.1
2.1
2.10 2.9 2.8
19 19
16
21
6
20
5
21
Modbus
3 User interface (accessory)
5 Buffer tank (field supply)
6 Balance tank (field supply)
6.1 Air vent valve
6.2 Drain valve
7 P_o: Outside circulating pump
(field supply)
8 SV2: Motorized 2-way valve
(field supply)
9 Mixing pump (field supply)
9.1 Mixing valve
9.2 P_c: Mixing pump
14 Expansion vessel (field supply)
Indoor
3
14
6.1
8 9
7 9.1 9.2
M
6.2
NOTE
NOTE
12
A
25
FCU1 FCU2
B
25
FHL1 FHL2
16 Filter (accessory)
19 Shut-off valve (field supply)
20 Fill valve (field supply)
21 Drain valve (field supply)
24A Room thermostat for zone A (field supply)
24B Room thermostat for zone B (field supply)
25 Collector (field supply)
26 Bypass valve (field supply)
A Zone A
B Zone B
FHL1...n Floor heating loop (field supply)
FCU1...n Fan coil unit (field supply)
26
FCUn
FHLn
V.1