5
NRCP2-BASE control board
Optional PD-AUX board
NRCP2-BASE board connections
Connector/channel
Type
Terminal
Description
CH 08/J4
DI
32-33
Remote on/off switch
CH 09/J4
DI
Customer safety loop input (0 = fault, 1 = OK)
CH 10/J4
DI
73-74
Capacity limitation selection
CH 12/J5
DI
Setpoint selection
CH 13/J5
DI
Power detection input (micro-cut protection)
CH 20/J2B
DO
Reversible four-way valves
CH 21/J2B
DO
Water heater command
XXXX/J12
Series
RJ-45 series connection
- Pin 1:
- Pin 2: ground
- Pin 3: signal -
J2A
J2B
J3
J4
J12
J3
J11
J10
J9B
J9A
J5
J6
J7A J7B J8
J1
J2
J6
J5
J4
J9
J8 J7
3.6.2 - Volt-free on/off contact
If the unit works in the remote operating mode (Remote)
the operation of the on/off contact is as follows:
Without multiplexing
Off
On heating
On/off contact
Open
Closed
With multiplexing
Off
On heating
On auto
On/off contact
Open
Closed
Open
3.6.3 - Volt-free setpoint selection contact
Heating
hsp 1
hsp 2
Set point selection contact
Open
Closed
3.6.4 - Volt-free capacity limitation selection contact
100%
Limit
Capacity limitation
Open
Closed
