31
Pumps with power consumption greater than 2 A or connection for HE pump
L
N
External
ON/OFF
L N
N PE
N
L
L
D
C
A
B
Fig. 37
A
Pump (on site)
B
To the control unit
C
Contactor (on site)
D
Separate power supply (observe manufacturer's
instructions)
Pumps 400 V~
L
N
L1 L2 L3 N PE
A
C
3~
M
B
Fig. 38
A
Pump (on site)
B
To the control unit
C
Contactor (on site)
For switching the contactor
Rated current
4(2) A~
Recommended connecting
cable
H05VV-F3G 0.75 mm
2
Or
H05RN-F3G 0.75 mm
2
External demand via switching contact
Connection options:
■
EA1 extension (accessory, see separate installation
instructions)
■
Plug
lH
When the contact is closed, burner operation is load-
dependent. The boiler water is heated to the set value
selected in parameter/coding address "9b" in the
"General"/1
group. The boiler water temperature is
limited by this set value and by the electronic maxi-
mum limit (coding address "06" in the
"Boiler"/2
group).
!
Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection
must be floating
and
meet the requirements of protection class II.
Connecting external cables
(cont.)
5839818
