20
1-26
A
A
B
B
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Head available to the system.
Key:
A = Head available at speed 2
÷
7
B = Power absorbed by the system
circulator pump (dotted area)
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er (
W
)
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er (
W
)
Flow rate (l/h)
Flow rate (l/h)
H
ea
d (kP
a)
H
ea
d (kP
a)
Constant head (
Δ
P C).
Proportional head (
Δ
P V).
1.24 KITS AVAILABLE ON REQUEST.
• System shut-off valve kits with or without
inspection filter (on request). The boiler is
designed for installation of system interception
cocks to be placed on flow and return pipes
of the connection assembly. This kit is very
useful for maintenance because it allows to
empty just the boiler without having to empty
the entire system. Moreover, the version with
filter preserves the functioning characteristics
of the boiler thanks to its inspectionable filter.
• Kit with two motorised areas (on request). In
the event one wants to divide the thermal sys-
tem in two areas to interlock them separately
with independent adjustments, on request Im-
mergas can supply the kit with two motorised
areas.
• Polyphosphate dispenser kit (on request). The
polyphosphate dispenser reduces the formation
of lime-scale and preserves the original heat
exchange and domestic hot water production
conditions. The boiler is prepared for applica-
tion of the polyphosphate dispenser kit.
• Cover kit (on request). If installed outdoors in a
partially protected place with direct air intake,it
is compulsory to mount the appropriate top
protection cover for the correct functioning
of the boiler and to protect it from adverse
weather conditions.
The above-mentioned kits are supplied complete
with instructions for assembly and use.
Speed
7
Speed
7
Speed 2
Speed 2
