40
Plug
sYS
Terminals
Function
Explanation
212.3
DHW circulation pump
Connection values
■
Output: 50 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
212.4
3-way diverter valve for heating water
buffer cylinder bypass or heat pump
in the case of dual alternative mode
Connection values
■
Output: 130 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
Connecting a temperature limiter as a maximum temperature limiter for underfloor heating
Connecting a general temperature limiter
B
M
1~
C
B
X2.N
?
A
X1.
Fig. 37
Connecting the temperature limiter, part no. 7151 728,
7151 729
B
M
1~
C
B
sÖ
X2.N
?
A
X1.
Fig. 38
Connection
A
to con-
trol unit
Circulation pump
C
Heating circuit without mixer A1/HC1
■
Without heating water buffer cylinder
211.2
Secondary pump
■
With heating water buffer cylinder
212.2
Heating circuit pump A1/HC1
Heating circuit with mixer M2/HC2
225.1
Heating circuit pump M2/HC2
Connecting the temperature limiter, part no. 7151 728,
7151 729
B
to the mixer extension kit
M
1~
C
B
A
sÖ
sÖ
N
?
Fig. 39
A
Connect plug
sÖ
to the extension kit.
B
Temperature limiter
C
Heating circuit pump M3/HC3
Installation sequence
Electrical connection
(cont.)
51
17 700 GB
Installation
