Viessmann EM-M1 - Connecting the Heating Circuit Pump

10
Note
In underfloor heating circuits, install a temperature lim-
iter on site to restrict the maximum temperature of the
underfloor heating system.
Heating circuit pump 230 V~
B
A
1~
M
Fig. 7
A
Heating circuit pump
B
Plug
sÖ
on the mixer extension kit
Specification
Rated current 1 A
Recommended connecting
cable
H05VV-F3G 0.75 mm
2
or
H05RN-F3G 0.75 mm
2
Heating circuit pump with power consumption greater than 1 A or high efficiency circulation pumps with
high starting currents
Pumps with switching input
LN
External
ON/OFF
L
N
N PE
NL
L
D
C
A
B
Fig. 8
A
Heating circuit pump
B
Plug
sÖ
on the mixer extension kit
C
Contactor
D
Separate power supply (observe manufacturer's
instructions)
Specification for switching the contactor:
Rated voltage 230 V∼
Rated current 1 A
Recommended connecting
cable
H05VV-F3G 0.75 mm
2
or
H05RN-F3G 0.75 mm
2
Installation sequence
Connecting the heating circuit pump
5838001
Installation