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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.6 APPLIANCE CONNECTION UNIT
e 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
gure 7:
1
2
3
G
V
RU
5
MU
RR
R
SC
M
4
7
Key (Fig. 7):
V - Electrical connection
G - Gas supply
RU - Storage tank unit return
MU - Storage tank unit ow
RR - System lling
SC - Condensate drain (minimum inter-
nal diameter Ø 13 mm)
M - System ow
R - System return
1 - System lling valve
2 - System draining valve
3 - 3 bar safety valve drain tting signal
4 - Storage tank unit bypass pipe, to be
used only in case of boiler operating
in room heating mode only
5 - Air vent valve drain
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