30
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. 19
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 (accessories, see separate installa-
tion instructions).
When the contact is closed, the secondary circuit is no
longer supplied with heat. The heating circuit pumps
and (if installed) circulation pump for cylinder heating
are switched according to the set codes (see the fol-
lowing table).
!
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.
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
Codes
■
"4b:2" in the
"General"
group
■
Effect of the function on the heating circuit pump:
Coding address "d6" in the
"Heating circuit"
group
■
Effect of the function on the circulation pump for cylin-
der heating (if installed):
Coding address "5E" in the
"DHW"
group
Codes
■
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) to 3 or 4 in
the
"General"
group.
■
Effect of the function on the heating circuit pump:
Coding address "d6" in the
"Heating circuit"
group
■
Effect of the function on the circulation pump for cylin-
der heating (if installed):
Coding address "5E" in the
"DHW"
group
Installation sequence
Electrical connections
(cont.)
5678 044 GB
Installation
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
Page 163: ...163 5678 044 GB ...
