Circulation Pump - Immergas MAGIS PRO 12 V2 Instructions And Recommendations

1.20 CIRCULATION PUMP

The appliance is supplied with a variable speed pump which operates as follows:
- Fixed ("A 05" = 0): The pump speed is fixed and corresponds to parameter "A 04".
- ∆T constant ("A 05" = 5 K): the pump speed varies to maintain the ∆T = 5K constant between the system flow and return. Also, you
can adjust the pump operating range, by setting the maximum speed "A 04" and the minimum speed "A 03".
For proper system operation, make sure that the minimum flow rate in operating conditions never drops below 750 l/h.
Pump release.
If after a long period of inactivity, the circulator is blocked, adjust the screw in the centre of the head in order to manually release the mo-
tor shaft.
Take great care during this operation to avoid damage to the motor.
Head available to the Magis Pro 12-14 V2 system
140
130
120
110
100
90
80
Y1 70
60
50
40
30
20
10 10
0 0
0
Key (Fig. 20):
X1 = Flow rate (l/h)
Y1 = Head (kPa)
Y2 = Circulator pump absorbed power (W)
1 = Maximum speed (A04 = 75%)
2 = Minimum speed (A03 = 50%)
A = Head available to the system
28
**
*
1
2
200 400 600 800 1000 1200
B
A
1400 1600 1800 2000 2200 2400
X1
B = Absorbed power by the circulator (dotted area)
* = Maximum head that can be set with A04 = 100% (for adjust-
ment refer to Parag. 3.9).
** = Maximum speed that can be set with A04 = 100% (for adjust-
ment refer to Parag. 3.9).
140
130
120
110
100
90
80
Y2
70
60
50
40
30
20
10 10
0
2600 2800 3000 3200 3400
20