30
1 4
1 5
1 6
1 7
3 3
1 8
1 9
2 0
2 1
2 2
2 3
3 4
3 5
3.13.3 -
HYDRAULIC AND ELECTRIC SYSTEM CONNECTION WITH PANEL BOARD
Figure shows the typical layout of the connection of the boiler to the heating system consisting in 1 direct high temperature zone
+ 1 low temperature zone controlled by a motorised mixer valve + domestic hot water production.
IMPORTANT NOTE: when there is only one zone (high or low temperature) always insert the
system return pipe in the lower rear connection.
KEY
m
Flow
rat
HIGH temperature return
rbt
LOW temperature return
Vmix2
zone mixer valve (motorised)
Pz1
HIGH TEMPERATURE zone heating system pump
Pz2
LOW TEMPERATURE zone heating system pump
VE
expansion vessel
Ir/AT
HIGH TEmPErATurE heating system
distribution
Ir/BT
LOW TEmPErATurE heating system
distribution
Ps
dHW recirculation pump
Pb
dHW production charge pump
SPF
storage tank probe
KF
heat control boiler probe E8
KF1
heat control boiler probe Lago Basic
VF
flow probe
AF
external probe
For connections, wiring and probes, refer to the dia-
grams supplied with the electric panel.
