15
Constant head
Proportional head
Constant speed
Factory setting
Factory setting
SATK20403
pump only
SATK20103
available
head
Δ
H (m w.g.)
G (m
3
/h)
p (bar)
3
0,4
0,3
0,2
0,1
0
1,25
1,00
0,75
0,25
0,5
1,5
0,50
6
4
3
2
1
5
7
8
Factory setting
Δ
H (m w.g.)
G (m
3
/h)
p (bar)
3
0,4
0,3
0,2
0,1
0
1,25
1,00
0,75
0,25
0,5
1,5
0,50
6
4
3
2
1
5
7
8
SATK30103
available
head
Constant head
Proportional head
Constant head
Proportional head
Δ
H (m w.g.)
G (m
3
/h)
p (bar)
3
0,6
0,4
0,3
0,2
0,1
0
2,5
2
1,5
0,5
0,5
3,5
4
3
1
6
4
3
2
1
5
7
0,7
0,8
8
Circulator - Curves and setting
CARATTERISTICA PROPORZIONALE
CARATTERISTICA COSTANTE
GIRI FISSI
CURVA 1 (MIN)
CURVA 2
CURVA 3
CURVA 4 (MAX)
ALARM STATUS
Blocked
Supply voltage low
Electrical error
LED SEQUENCE
CURVE TYPE
0
PROPORTIONAL AUTO ADAPT
1
CONSTANT AUTO ADAPT
2
PROPORTIONAL 1
3
PROPORTIONAL 2
4
PROPORTIONAL 3 - MAX
5
CONSTANT 1
6
CONSTANT 2
7
CONSTANT 3 - MAX
8
FIXED SPEED 1
9
FIXED SPEED 2
10
FIXED SPEED 3 - MAX
The HIU is equipped with a Grundfos circulator model UPM3 AUTO
15-70.
By default, the circulator setting is with the maximum proportional
head characteristic.
To change the characteristic, hold down the front key for more than
two seconds and then press the same key repeatedly until reaching
the required characteristic (refer to the figure below).
Having identified the required characteristic (head - flow rate chart
shown below) wait for about ten seconds for the setting to be
accepted by the circulator, which will then revert to the sequence of
LEDs showing power consumption.
The pump also has a self-diagnostics system to reveal any possible
operating problems.
Any problem
detected is shown
by a sequence of
LEDs:
A long press of the front key (>10 s) locks the pump setting, preventing
possible incorrect modifications of the curve. Unlocking can be done
in the same way, with a long press (>10 s) of the front key.
CARATTERISTICA PROPORZIONALE
CARATTERISTICA COSTANTE
GIRI FISSI
CURVA 1 (MIN)
CURVA 2
CURVA 3
CURVA 4 (MAX)
ALARM STATUS
Blocked
Supply voltage low
Electrical error
LED SEQUENCE
CURVE TYPE
0
PROPORTIONAL AUTO ADAPT
1
CONSTANT AUTO ADAPT
2
PROPORTIONAL 1
3
PROPORTIONAL 2
4
PROPORTIONAL 3 - MAX
5
CONSTANT 1
6
CONSTANT 2
7
CONSTANT 3 - MAX
8
FIXED SPEED 1
9
FIXED SPEED 2
10
FIXED SPEED 3 - MAX