Carrier 61AF - Board Connections and Contacts; NRCP2-BASE Board Connections; Volt-Free On;Off Contact; Setpoint and Capacity Limitation Contacts

5
 
NRCP2-BASE board connections
   
CH 08/J4 DI 32-33 Remote on/o 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: signal +
- 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
 
 Open Closed
With multiplexing
  
 Open Closed Open
3.6.3 - Volt-free setpoint selection contact

 
 Open Closed
3.6.4 - Volt-free capacity limitation selection contact
 
 Open Closed