19
NOTE
The volume of balance tank(8) should be greater than 40L
.
The drain valve (6) should be installed at the lowest
positon of the system.
As the temperature sensor attached in the user interface is used to detect the room temperature, the user interface
(4) should be placed in the room where floor heating loops and fan coil units is installed and away from the heating
source. Correct configuration should be applied in the user interface (refer to
10.7 field settings/TEMP. TYPE
SETTING
). The first setpoint is water temperature which can be set on the main page of user interface, the second
setpoint is calculated from climate related curves, the target outlet water temperature is the higher one of these two
setpoints. The unit will turn off when the room temperature reaches the target temperature.
Pump operation and space heating
The pump (1.7) and (10) will operate when there is request for heating from A and / or B. Pump (23.1) will operate when the
room temperature of zone B is lower than the set point which set in the user interface. The outdoor unit will start operating to
achieve the target water flow temperature.
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
2
3
Assembly unit
Assembly unit
Coding
Coding
FHL 1…n
4
6
Outdoor unit
Manometer
Pressure relief valve
Expansion vessel
Plate heat exchanger
Air purge valve
Flow switch
P_i: Circulation pump in the unit
Y-shape filter
Stop valve (field supply)
Wired controller
Drain valve (field supply)
7
8
8.1
8.2
9
10
11
17
23
23.1
Fill valve (field supply)
Balance tank (field supply)
Air purge valve
Drain valve
Expansion vessel (field supply)
P_o: Outside circulation pump (field supply)
Collector / distributor
(field supply)
Floor heating loop (field supply)
5B
Room thermostat for zone 2
(field supply)
Bypass valve (field supply)
Mixing station (field supply)
P_c: zone 2 pump (field supply)
FCU 1...n
Fan coil units (field supply)
23.2
SV3: 3-way valve (field supply)
24
Tw2: Zone 2 water flow temp. (individual purchase)
5A
Room thermostat for zone 1
(field supply)
2
3
6
7
8.1
8.2
8
10
9
11
11
FHL1
FHL2
FHLn
FCUn
FCU2
FCU1
17
4
23.1
23
23.2
24
A
B
1
1.5
1.4
1.2
1.3
1.7
1.6
1.1
The operation and configuration of the field water circuit is the responsibility of the installer.
We only offer a dual set point control function. This function allows two set points to be generated. Depending on the
required water temperature (floor heating loops and/or fan coil units are required) the first set point or second set point can
be activated. See
10.7 field setting /TEMP. TYPE SETTING
.
V.2
Summary of Contents for ETH220VMA
Page 164: ...V 2...
