20
Plug
lH
EA1 extension
A
lH
N
?
1 L
A
Floating contact (when connecting, remove jumper
– if installed – between L and 1)
B
[{S
DE
[{D
DE
[{A
DE
A
A
Floating contact
B
EA1 extension
Parameter settings
■
"4b:1" in the
"General"
group
■
Effect of the function on the relevant heating circuit
pump:
Parameter "d7" in the
"Heating circuit"
group
■
Effect of the function on the circulation pump for cylin-
der heating (if installed):
Parameter "5F" in the
"DHW"
group
Parameter settings
■
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) in the
"General"
group to 2
■
Effect of the function on the relevant heating circuit
pump:
Parameter "d7" in the
"Heating circuit"
group
■
Effect of the function on the circulation pump for cylin-
der heating (if installed):
Parameter "5F" in the
"DHW"
group
External demand via 0
–
10 V input
Connection at 0
–
10 V input at
EA1 extension
.
Ensure DC separation between the earth conductor
and the negative pole of the on-site power source.
U
+
L N
L
N
fÖ
S P
aBJ
Ö
[{{]
0-10V
f-]
A
+ -
Fig. 14
0 to 1 V
No specification for set boiler water
temperature
1 V
Set value 10 °C
10 V
Set value 100 °C
External blocking via switching contact
Connection options:
■
Plug
lH
■
EA1 extension (accessory, see separate installation
instructions)
When the contact is closed, the burner is switched off.
The heating circuit pump and (if installed) circulation
pump for cylinder heating are switched according to
the following parameter settings.
!
Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection
must be potential-free
and meet the requirements of protection class II.
Installing the boiler
Electrical connections
(cont.)
5778741
Installation
