2
2.1 Installation diagram This figure shows the installation diagram. This diagram is referred to in the sections
VENTED
17
3
Legend
1. pressure relief valve
(mandatory if 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
Installation
describing the actual connection procedure.
H
A
19
4
18
12
11
14
14
14
4
9
11. service stop valve
12. temperature gauge (optional)
14. draw-off points
15. expansion valve (mandatory)
16. expansion vessel (mandatory)
17. 3-way aeration valve (recommended)
18. cold water head tank
19. float switch
ITS 300
UNVENTED
E
3
12
11
14
14
14
16
9
A. cold water supply
B. hot water supply
C. circulation pipe
E. overflow pipe
F. inlet heat exchanger
G. outlet heat exchanger
H. overflow protection
A
15
A
5
1
4
29