33
Technical features and dimensions
ENGLISH
14
15
16
17
33
18
19
20
21
22
23
34
35
11
41
12
13
31
32
42
KEY
m
Flow
r
at
HIGH temperature return
r
bt
LOW temperature return
Vmix2
zone mixer valve (motorised)
Pz1
HIGH
TEMPERA
TURE zone heating system pump
Pz2
LOW
TEMPERA
TURE zone heating system pump
VE
expansion vessel
Ir
/A
T
HIGH
TE
m
PE
r
AT
ur
E heating system
distribution
Ir
/BT
LOW
TE
m
PE
r
AT
ur
E heating system
distribution
Ps
d
HW recirculation pump
P1
circulation pump
Pb
d
HW 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 diagrams supplied with the electric panel.
3.14.1 -
h
Y
dra
U
lic
and
elec
T
ric
s
Y
s
T
e
M
c
O
nnec
T
iO
n
wi
T
h
BO
ilers
in
cascade
p
anel
BO
ard
cod. 37892-38778 and cod. 37900-37901
Figure shows the
typical layout of
the connection of
the boiler to
the
heating system
consisting in 2
boilers in cascade serving 1
high temperature zone +
1
low temperature zone controlled
by a motorised mixer valve + domestic hot water production.
Boiler n°1 is fitted with a panel board code 37892-38778, boiler n° 2 is fitted with a panel board code 37900-37901.
