35
Technical features and dimensions
2.4
Key components
1
5
25
22
23
26
27
24
10
4
11
13
12
7
14
15
19
17
16
18
2
3
6
8
9
20
21
Fig. 8 Key components
1. Pre-mixed burner
2. Modulating fan
3. Gas valve
4. CH expansion vessel
5. Flue gas discharge tower
6. Condensate trap
7. Modulating heating pump
8. Three-way valve
9. DHW recirculation pump (optional)
10. Zone 1 high-temperature pump (V, MV, Z, MZ versions)
11. Zone 2 low-temperature pump (V, MV, Z, MZ versions)
12. Zone 3 low-temperature pump (Z, MZ versions)
13. Zone 2 low-temperature mixing valve (V, MV, Z, MZ versions)
14. Zone 3 low-temperature mixing valve (Z, MZ versions)
15. Solar system pressure gauge
16. Solar system pump
17. Solar system air purging device
18. Solar plant lowmeter with iller cock and discharge cock
19. Ball valves with thermometers on solar plant low and return
20. DHW expansion vessel
21. Solar expansion vessel
22. DHW temperature mixing valve
23. Heating system iller cock
24. 300-litre solar water heater
25. Hydraulic separator
26. Deviating valve for thermal discharge (M, MV and MZ versions)
27. Additional solar vessel
