39
!
Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection
must be potential-
free
.
Function
External blocking
Control unit
EA1 extension
Connection
DE1, DE2 or DE3
B
A
A
A
DE2
DE1
DE3
A
Floating contact
B
EA1 extension
Contact
■
Closed
■
Controlled burner shutdown
■
The shunt pump or boiler circuit pump (if installed) is switched off.
Note
There is
no
frost protection for the heating system.
■
Open
The boiler is enabled.
Parameter
Set "42" (DE1), "43" (DE2) or "44" (DE3) in the
"General"
group to 3 or 4.
Connecting the external control unit
Settings
■
Parameter in the
"Boiler"
group:
–
"02:1" for 2-stage burner
–
"02:2" for modulating burner
■
Parameter in
"General"
group: "01:1" for single
boiler system (delivered condition)
■
The boiler water temperature must be set to the
lower value.
The boiler is held at the required minimum tempera-
ture.
■
The cylinder temperature controller is activated when
a cylinder temperature sensor is connected.
■
The high limit safety cut-out settings and other set-
tings depend on the system equipment level and the
safety equipment to EN 12828 or EN 12953.
High limit safety cut-out
110 °C
100 °C
Temperature controller
100 °C
87 °C
Electronic maximum boiler water temperature limit, parameter "06"
in the
"Boiler"
group on the Vitotronic 100
95 °C
85 °C
Maximum temperature of the on-site control unit
90 °C
80 °C
External functions
—
single boiler system
External blocking
5863679
Installation
Содержание Vitotronic 11 CC1E
Страница 111: ...111 PCB 230 V Fig 46 Connection and wiring diagrams Connection and wiring diagram cont 5863679 Appendix...
Страница 118: ...118 5863679...
Страница 119: ...119 5863679...
