Immergas VICTRIX Superior TOP 32 E - Circulation Pump Operation

A
B
16 - IE
INSTALLERUSER
MAINTENANCE TECHNICIAN
Fig. 1-28
Head available to the system.
Key:
A+B = Head available with by-pass excluded (closed) in Auto mode
B = Head available with by-pass inserted (open) in Auto mode
Head (m H
2
O)
Flow rate (l/h)
Head (kPa)
A
B
1.22 CIRCULATION PUMP.
e boilers are supplied with a built-in circulation
pump with variable speed. When the boiler is in
heating phase the speed of the pump is dened
according to the “P57” in the configuration
menu (Parag. 3.8), in sanitary phase the pump
functions at maximum speed.
In heating phase the Auto and Fixed mode
operations are available.
• Auto: automatic pump speed. In this mode it
is possible to choose between the options at
“Proportional prevalence” and “∆T constant”.
- Proportional prevalence (∆T = 0): the pump
speed varies based on the power supplied by
the burner, greater the power, greater the
speed. Moreover, inside the parameter it is
possible to regulate the operation range of
the pump by setting the maximum speed
(adjustable from 100 % ÷ 55 %) and the
minimum speed (adjustable from 55 % to
the max set speed).
- ∆T Constant (∆T = 5 ÷ 25 K): at variable
pump speed to keep the ∆T constant between
system ow and return depending on the set
value of K. Moreover, inside the parameter
it is possible to regulate the operation range
of the pump by setting the maximum speed
(adjustable from 100 % ÷ 55 %) and the
minimum speed (adjustable from 54 % to
the max set speed).
• Fixed (100 % ÷ 55 %): in this mode the pump
operates at a constant speed, the range of work
is dened between the minimum (55 %) and
the maximum (100 %).
Pump release. If, aer a prolonged period of
inactivity, the circulation pump is blocked,
unscrew the front cap and turn the motor sha
using a screwdriver. Take great care during this
operation to avoid damage to the motor.
MAX.
MIN.