Boiler electrical connection
Circulation pump at plug
M
A
1~
?
sÖ
0 - 10 V
Fig. 25
High efficiency circulation pump, speed-controlled
A
via 0 - 10 V control voltage
Adjusting the function of the circulation pump
Hydraulic connection/connection require-
ments
Single boiler system with:
Heating circuit without mixer
■
Connection without low loss header and with-
■
out heating water buffer cylinder
Single boiler system with heating circuits con-
nected to low loss header or heating water buf-
fer cylinder
Self-regulating pump
Pump is switched on and off via plug
24
(cont.)
sÖ
Control unit setting
Coding address/group
Max. pump speed:
■
E6: ... /heating circuit
Min. pump speed:
■
E7: ... /heating circuit
For further details, see following
diagram and chapter "Heating
circuit ..." under code 2.
30:0/boiler/2
.
sÖ
If variable speed control is possible, insert 0 - 10 V
plug-in connection at X4.
Rated current
Rated voltage
N
L
?
C
sÖ
B
Fig. 26
Pump
A
To the control unit
B
Contactor
C
Separate power supply (observe manufacturer's
D
instructions)
2(1) A~
230 V ~
Circulation pump setting
Ext. In
Ext. In
2
2
6
6
12
12
Ext. In
2
2
6
6
12
12
Recommended for
t = 15 K
Δ
≙
■
49 kW:
= 2
2.80 m
≙
■
60 kW:
= 3
3.44 m
L N
D
?
A
3
/h
3
/h