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 positon of the system. An independent backup heater can be selected and installed
in the door. pump(10) and pump(23.1) 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 and For tank loop
pump P_d and mix pump P_c).
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 better heat pump performance.
Pump operation and space heating
The pump (1.8) and (10) will operate when there is request for heating from A and/or B. Pump (23.1) will operate only when
there is request for heating from B. The outdoor unit will start operating to achieve the target water flow temperature. The target
water leaving temperature depends on which room thermostat is requesting heating.
When the room temperature of both zones is above the thermostat set point, the outdoor unit and pump will stop operating.
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
2
3
Assembly unit
Assembly unit
Coding
Coding
FHL 1…n
4
6
Outdoor unit
Manometer
Pressure relief valve
Expansion vessel
Plate heat exchanger
Backup heater
（
Customized model
）
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
19
23
23.1
FCU 1...n
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 (field supply)
Floor heating loop (field supply)
Bypass valve (field supply)
SV2:2-way valve (field supply)
Mixing station (field supply)
P_c: mixing pump
Fan coil units (field supply)
21
1
1.6
1.5
1.4 1.2
1.3
1.8
1.7
2 3
6 7
8.1
8.2
8
10
9
11
11
FHL1
FHL2
FHLn
FCUn
FCU2
FCU1
M
1.1
19
17
T
T
4
5B
5A
23.1
23
A
B
Summary of Contents for Monobloc R32
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Page 90: ......
