IOM SYSHP MINI HYDRO

18
7.2.2 Mode set control
Code
Assembly unit
Code
Assembly unit
1
Outdoor unit
17
Shut-off valve (Field supply)
2
Indoor unit
18
Filling valve (Field supply)
3
User interface
19
Drainage valve (Field supply)
5
Balance tank (Field supply)
23
Collector/distributor (Field supply)
5.1
Automatic air purge valve
24
Bypass valve (Field supply)
5.2
Drainage valve
25
Thermostat transfer board (Optional)
6
P_o: Outside circulation pump (Field
supply)
RT 1…7
Low voltage room thermostat (Field supply)
7
SV2: 3-way valve (Field supply)
RT8
High voltage room thermostat (Field supply)
13
Expansion vessel (Field supply)
FHL
1…n
Floor heating loop (Field supply)
15 Filter (Accessory) FCU
1...n
Fan coil unit (Field supply)
Cooling or heating mode is set via the room thermostat, water temperature is set on the user interface.
1) When any “CL” of all the thermostats close, system will be set at cooling mode.
2) When any “HL” of all the thermostats close and all “CL” open, system will be set at heating mode.
Space heating
The circulation pumps operation
1) When the system is in cooling mode, which means any “CL” of all the thermostats closes, SV2(7) keeps
OFF, P_o(6) starts running;
2) When the system is in heating mode, which means one or more “HL” close and all “CL” open, SV2(7)
keeps ON, P_o(6) starts running.
2.1
2
2.1
2.2
2.3
2.5
2.9
2.6
19
5
5.2
5.1
13
17
15
17
2.72.8
2.10
18
Modbus
Outdoor
19
Indoor
1
2.11
F
2.4
RT2 RT3
25
RT4
RT5
RT7
RT6
RT8
RT1
3
FCU1 FCUnFCU2
FHL1 FHL2 FHLn
23
23
24
6
7
M