14
4.8 CONNECTION SCHEMA
Selection and installation of system components must be
carry out by installer.
Following you will find some indications to integrate with what
is provided by the local regulations in force and by the good
technical laws.
4 - WATER CONNECTIONS
A standard
unit
B unit with hydronic kit
C unit with three-way valve for domestic hot water
1. differential
pressure
2. circulator
3. integrative resistance
4. high-pressure valve (only for size 31-41)
5. safety valve
6. three-way valve for domestic hot water
7. antivibration
joints
8. supports
9. filter (supplied as standard )
10. safety valve
11. expansion tank
12. flow switch
13. vent
4.9 INPUTS
A Lateral output input for water circuit
B Electric line input
C Output input from below for water circuit hole diameter
180 mm
D Condensate discharge output
D
C
B
A
1. heating element 2/4/6 kW
2. high-pressure valve (bypass differential) (only for size 31-
41)
3. 3bar water safety valve
4. circulator
C - Version with 3-way valve and hydronic kit
B - Version with hydronic kit
A - Basic version
1. three-way valve for domestic hot water
P
9
1
8
2
3
5
7
6
4
8
A
B
C
F
10 11 12 13
