33
!
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.
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:2" in the
"General"/1
group
■
Effect of the function on the heating circuit pump:
Parameter/coding address "d6" 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 "5E" in the
"DHW"/3
group
Parameters/codes
■
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) to 3 or 4 in
the
"General"/1
group
■
Effect of the function on the heating circuit pump:
Parameter/coding address "d6" 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 "5E" in the
"DHW"/3
group
Connection of accessories
fÖ
fÖ
B
C
aVG
fÖ
lH
A
D
E
aVG
aVG
f-]
A
aVG
aVG
f-]
A
fÖ
aVG
aVG
f-]
A
Fig. 40
A
Boiler control unit
B
Extension kit for heating circuit with mixer M2
C
Extension kit for heating circuit with mixer M3
D
EA1 extension, AM1 extension or solar control
module, type SM1
E
ON/OFF switch
If the current flowing to the connected actuators (e.g.
circulation pumps) is higher than the fuse rating of the
accessory: Only use the output concerned to control
an on-site relay.
Accessories
Internal fuse
protection
Extension kit for heating circuit with
mixer
2 A
EA1 extension
2 A
AM1 extension
4 A
Solar control module, type SM1
2 A
Connecting external cables
(cont.)
5839818
