Regin Corrigo C Series, User Manual, Page: 15 / 56

16
Manual C
ORRIGO
C-
SERIES
2000.09
DI Digital inputs
C
ORRIGO
has 8 digital inputs, DI1...DI8 for activation of certain functions and input of
external alarm signals.
These inputs may only be wired to voltage-free contacts.
These inputs may only refer to the common DI pole on terminal 22.
Terminal 22 does not have the same potential as other signal neutrals in the
C
ORRIGO
and may not be connected to any other terminals except the DI inputs.
Each input can be individually set, either so that closed contact activates the
function/alarm, or so that open contact activates the function/alarm. See under
menu ”Settings” page 43.
DI1 Input for filter monitor pressure switch(es).
If there are several switches these should be wired in parallell.
DI2 Circulation pump indication.
Must be wired when C
ORRIGO
is configured for water heating.
A stopped pump will force the controller to go into shut down mode.
DI3 Alarm from cooling machine(s).
DI4 Rotation sentinel or ice build-up thermostat in plate exchanger.
DI5 Fire alarm.
DI6 External alarms or external switches not in ”Auto position” (used when
C
ORRIGO
is used with relay module RM6H-24/D or fire damper end position
switches (for fire damper exercising). Function depends on configuration
settings (see page 30).
DI7 Pushbutton or timer for extended running, single speed fan or high speed
when using two-speed fans.
DI8 Pushbutton or timer for extended running, low speed when using two-speed
fans.
Simultaneous closure of both DI7 and DI8 will force the C
ORRIGO
to shut
down.
For installations with external switches for fan control, wire according to the
figures below. DI7 and DI8 should then be configured as for timer.
See page 31.
High speed
Low speed
0
Auto
DI7
DI8
2-speed fans
single-speed fans
H
0
Auto
DI8
DI7
Important!