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Installation diagram: Theta dual service with a SGE - Unvented.
Legend
1.
pressure relief valve (mandatory if the
mains water pressure is too high)
3.
T&P valve (mandatory)
4.
stop valve (recommended)
5.
non-return valve (mandatory)
6.
circulation pump (optional)
9.
drain valve
10. manual gas valve (mandatory)
11. service stop valve (recommended)
12. temperature gauge (optional)
13. condensation drain
14. draw-off point
15. expansion valve (mandatory)
16. expansion vessel (mandatory)
20. heating pump (mandatory)
22. radiator
23. pressure valve (mandatory)
26. heating filling tap (recommended)
32. floor heating
33. room thermostat
37. combined Q/T sensor (optional)
38. solar heating pump station
(modulating - mandatory)
40. DHW-pump
42. control solar heating system
56. pressure valve (recommended)
57. filling and draining valve (mandatory)
59. 3-way mixing valve (mandatory)
A. cold water supply
B. hot water supply
C. circulation pipe
D. gas supply
F. supply heat exchanger
G. heat exchanger return
IMD-1128b R0.0
hot water supply 3-way mixing valve
from water heater
outlet 3-way mixing valve to plate heat
exchanger
return water to 3-way mixing valve
from plate heat exchanger
S
collector sensor
1
S
tank sensor
2
S
solar heating system return sensor
4
(optional)
S
heating system sensor
5
71
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