16
INS
TALLER
U
SER
M
AINTEN
AN
CE
TECHNI
CI
AN
TECHNI
CAL
D
AT
A
1.6 APPLIANCE CONNECTION UNIT (OPTIONAL)
The connection unit consisting of all the necessary parts to perform the hydraulic and gas system connections of the appliance comes as
optional kit, perform the connections in accordance with the type of installation to be made and respecting the arrangement shown in
(Fig. 7):
1
3
G
V
M
AC
R
SC
AF
2
7
Key (Fig. 7):
V
- Electric connection
G
- Gas supply
AC - Domestic hot water outlet
AF - Domestic hot water inlet
SC - Condensate drain (minimum internal diameter Ø 13 mm)
M
- System flow
R
- System return
1
- System filling cock
2
- System draining valve
3
- 3-bar safety valve drain fitting
