11
ON DHW CH FAULT
2
1
0
1
2
3
4
bar
20
11
14
19
18
17
15
16
13
12
23
21
22
3
9
4
7
10
8
6
5
2
1
24
1. Frame
2. Expansion vessel
3. Electronic regulator
4. 2-way modulating valve (primary heating)
5. Heating flow temperature probe (secondary)
6. DHW heat exchanger
7. 2-way modulating valve - DHW
8. Thermal safety thermostat
9. Secondary heating drain cock
10. DHW temperature probe
11. Filling unit with backflow preventer
12. Safety relief valve
13. Flow temp. compensation return probe
14. Primary circuit drain cock
15. Pump UPM3 15-70
16. Protective by-pass
17. Pressure switch
18. Heating strainer (secondary)
19. DHW priority flow meter
20. Heating exchanger
21. Heat meter spacer template
22. Primary circuit strainer/flow probe pocket
23. Primary air vent cock
24. Primary circuit shut-off valves
SATK30
105HE
Indirect HIU with high efficiency pump. 65 kW DHW.
Characteristic components
Factory settings
The SATK30105HE HIU is factory set to support
low temperature
heating (25–45°C), according to the following switch setting.
To modify the factory settings and enable the HIU to support
medium/high temperature
systems (45–75°C), proceed as
follows.
1 - cut off the electric power supply to the HIU
2 - set switches 2-3 according to the following setting:
3 -
disconnect the thermal safety thermostat (see page 13
ref. 5) and apply a jumper on the cable (see adjacent
diagram)
4 - restore the electric supply.
Functional characteristics
Heating range
- LOW temperature setting 25–45°C
- MEDIUM/HIGH temperature setting 45–75°C
Set point regulation
DHW production range 42–60°C
Optional functions
Domestic cycle:
- DHW pre-heating function
Heating cycle:
- modulating temperature regulation
with compensated set point
at LOW temperature setting:
- floor slab heating function
1
2
3
5
6
4
ON
1
2
3
5
6
ON
4
Factory set (do not change)
OFF
ON
OFF
ON
May be changed to activate optional functions
Switch 1: modulating temperature regulation
with compensated set point
Switch 2-3: HIGH - LOW temperature setting
Switch 5: DHW pre-heating function
