31
Plug
lH
EA1 extension
A
lH
N
?
1 L
A
Floating contact (when connecting, remove jumper
between L and 1)
B
[{S
DE
[{D
DE
[{A
DE
A
A
Floating contact
B
EA1 extension
Parameters/codes
■
"4b:1" in the
"General"/1
group
■
Effect of the function on the relevant heating circuit
pump:
Parameter/coding address "d7" in the
"Heating cir-
cuit"
group (only for weather-compensated control
units)
■
Effect of the function on the circulation pump for cylin-
der heating:
Parameter/coding address "5F" in the
"DHW"/3
group
Parameters/codes
■
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) to 2 in the
"General"/1
group
■
Effect of the function on the relevant heating circuit
pump:
Parameter/coding address "d7" in the
"Heating cir-
cuit"
group (only for weather-compensated control
units)
■
Effect of the function on the circulation pump for cylin-
der heating:
Parameter/coding address "5F" in the
"DHW"/3
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. 38
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) the circula-
tion pump for cylinder heating are switched according
to the set parameter/code (see the following table
"Parameters/codes").
Connecting external cables
(cont.)
5814780
