Circulation Pump - Immergas MAGIS PRO ERP Instruction And Recommendation Booklet

1.14 CIRCULATION PUMP.

The hydronic modules are supplied with a varia-
ble speed circulator, which operates at the speed
set in the "A04" parameter (which can be set
between 55% and 100%). The minimum speed
set on the "A03" parameter is used for special
functions (e.g. pump anti-locking function).
Attention: for proper system operation, make
sure that the minimum flow in operating condi-
tions never drops below 500 l/h.
Pump release. If, after a prolonged period of
inactivity, the circulation pump is blocked, turn
the motor shaft using a screwdriver. Take great
care during this operation to avoid damage to
the motor.
Total head available to the system.
A
D
A+B = Head available with by-pass closed
B = Head available with by-pass open
C+D = Power absorbed by the pump with by-pass open (dotted area)
D = Power absorbed by the pump with by-pass closed (dotted area)
1-10
By-pass Regulation (part. 17 Fig. 1-11). The
hydronic module comes out of the factory with
the by-pass closed.
If necessary, the by-pass can be regulated to
system requirements from minimum (by-pass
closed) to maximum (by-pass open). Adjust
using a flat head screwdriver, turn clockwise
and open the by-pass, anticlockwise it is closed.
C
Flow rate (l/h)
12
B