74
5
3
4
1
6
7
8
14
16
17
19
23
9
12
11
13
10
15
25
26
27
20
21
28
29
24
M
C U
E
G
R
S3
1.4
FUNCTIONAL DIAGRAM (fig. 2)
Fig..2
KEY
. 1. Fan.
.
3. Primary.exchanger
.
4. Limit.stat
. 5. Air.relief.valve
.
6. Safety.thermostat.100°C
. 7. C.H..sensor.(SM)
. 8. Flow.switch
. 9. Expansion.vessel
.
10. D.H.W..tank
.
11. D.H.W..safety.valve.7.bar
.
12. Magnesium.anode
.13. D.H.W..sensor.(SB)
.14. Safety.valve
.
15. Gas.valve
.16. Pump.high.efficiency
.17. Motor-operated.diverter.valve
.19. D.H.W..expansion.vessel
.20. Water.pressure.transducer
21.. Automatic.bypass
23.. D.H.W..drain.cock
24.. Condensate.drain.tap
25.. Gas.cock.(optional)
26.. C.H..return.cock.(optional)
27.. C.H..flow.cock.(optional)
28.. D.H.W..cock
29.. Fixing.jig.(optional).
CONNECTIONS
R.. . C.H..return
M.. . C.H..flow
G.. . Gas.connection
E.. . D.H.W..inlet
U.. . D.H.W..outlet
C. . Recirculation
S3. . Condensation.outlet