23
Plug
Component
Single boiler system
Multi boiler system
sL
One of the following circulation pumps:
■
Shunt pump
X
X
■
Boiler circuit pump
X
X
■
Boiler circuit pump with butterfly valve
function
X
X
Pumps 230 V~
Rated current: 4(2) A~
B
A
1~
M
Fig. 11
A
Pump
B
To the control unit
230 V~ pumps with power consumption greater than 2 A or high efficiency circulation pumps
Pumps with switching input
L
N
External
ON/OFF
L N
N PE
N
L
L
D
C
A
B
Fig. 12
A
Pump
B
To the control unit
C
Contactor
D
Separate mains connection (observe manufactur-
er's instructions)
Pumps without switching input
L
N
L N
N PE
N
L
L
D
C
A
B
Fig. 13
A
Pump
B
To the control unit
C
Contactor
D
Separate mains connection (observe manufactur-
er's instructions)
Electrical connections
Connecting pumps
(cont.)
5863679
Installation
Summary of Contents for Vitotronic 11 CC1E
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