17
A
B
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
1.24 KITS AVAILABLE ON REQUEST.
• Cascade and zones heat adjuster kit.
• Support kit for fixing the heat adjuster to the
wall.
• Zone manager kit.
• Modulating room thermostat kit.
• External probe kit.
• System flow probe kit.
• DHW probe kit for external storage tank.
• Anti-freeze with -15 °C resistance kit.
• Individual boiler safety devices stub pipes kit.
• Boilers in cascade safety devices stub pipes kit.
• Three-way valve kit for coupling external stor-
age tank unit.
• Individual boiler hydraulic manifold kit.
Head available to the system.
Flow rate (l/h)
H
ea
d (kP
a)
1.23 CIRCULATION PUMP.
These boilers are equipped with a variable speed
pump.
During CH mode, the pump speed is defined
according to parameters “P27” and “P28” and
it is adjusted in order to keep a constant DT of
18°C between flow and return.
During DHW mode, the pump always runs at
the maximum speed.
Pump release.
If, after a prolonged period of
inactivity, the circulation pump is blocked,
unscrew the front cap and turn the motor shaft
using a screwdriver. Take great care during this
operation to avoid damage to the motor.
• Hydraulic connection manifolds kit with two
boilers in cascade.
• Additional boiler in cascade hydraulic manifold
kit.
• Flue exhaust manifold kit with flue adjusting
devices with two boilers in cascade.
• Flue exhaust manifold kit with flue adjusting
device with additional boiler in cascade.
• Ø80/125 horizontal concentric kit.
• Ø80/125 vertical concentric kit.
• Ø 80 horizontal kit with flue exhaust.
• 80 Ø horizontal terminal kit with wall flue
exhaust.
• Ø80 vertical terminal kit.
• Safety marker thermostat kit.
The above-mentioned kits are supplied complete
with instructions for assembly and use.
1-24
Pu
m
p E
lec
tric
al
C
on
su
m
pt
io
n (
W)
Key:
A = Available pump head
B = Pump electrical consumption
(dotted area)
