19
A4
A3
A2
V4
V3
V2
A3
A4
V3
V4
A2
V2
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
1.25 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.
• System zone control unit kit (on request). If
the heating system is to be divided into several
zones
(max. three),
in order to interlock them
with separate adjustments and to keep water
flow rate high for each zone, Immergas supplies
zone system kits by request.
• 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.
• Relay board (on request). The boiler is prepared
for the installation of a relay card that allows
to increase the features of the appliance and
therefore functioning possibilities.
• 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.
• Column attachment kit UB 200 (upon request).
A vertical connection kit is envisioned for the
connection of the 200 litre storage tank unit
(when the boiler is connected to an external stor-
age tank unit)
, which enables you to connect the
storage tank unit directly to the boiler without
having to insert the connection pipes into the
wall.
The above-mentioned kits are supplied complete
with instructions for assembly and use.
Total head available to the system.
1-29
Key:
V2 = Total head available to the system with
pump at speed 2
V3 = Total head available to the system with
pump at speed 3
V4 = Total head available to the system with
pump at speed 4
A2 = Power absorbed by the pump at speed 2
A3 = Power absorbed by the pump at speed 3
A4 = Power absorbed by the pump at speed 4
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)
Closed bypass
Open bypass
