Typical Application Examples - EAS ELECTRIC ETHKH160 Manual De Instrucciones

4 TYPICAL APPLICATION EXAMPLES

The application examples given below are for illustration purposes only.
4.1 Application 1
Space heating only application with a room thermostat connected
to the unit.
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)
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.
Unit operation and space heating
When a room thermostat is connected to the unit and when there is a heating request from the room thermostat, the unit will start operating to
achieve the target water flow temperature as set on the user interface. When the room temperature is above the thermostat set point in heating
mode, the unit (1) and (2) will stop operating, the circulating pump(2.1) and (7) will stop running also, the room thermostat uesd as a switch here.
Make sure to connect the thermostat wires to the correct terminals method B should be selected (see "For room thermostat" on
"Connection for other components") and to configure the ROOM THERMOSTAT in the FOR SERVICEMAN correctly (see
"Field settings/ROOM THERMOSTAT")
3
2
2.5
2.2
2.6
2.3
24
2.7
2.1
2.4 2.1
2.10
2.9 2.8
19 19
16
21
20
5
21
Modbus
2.8 Water inlet
2.9 Water outlet
2.10 Refrigerant connections
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)
Indoor
14
6.1
7
6
6.2
14 Expansion vessel (field supply)
16 Filter (accessory)
19 Shut-off valve (field supply)
20 Fill valve (field supply)
21 Drain valve (field supply)
24 Room thermostat (field supply)
25 Collector (field supply)
FHL1...n Floor heating loop (field supply)
NOTE
NOTE
4
25
FHL1 FHL2 FHLn
V.1