M_V1.0
–
ORC-HC2-24
Installer Mode
Installer Options
Function
Setting / Option
Default
1
Offset / calibration
-1
2
Not available
00
3
Lock
00 = All the buttons are locked except power
01 = All the buttons are locked
01
4
Not available
01
5
Min set Temp
5
–
15’C
18
6
Max set Temp
5
–
35’C
32
7
Time Format
00 = 12 hour, 01 = 24 hour
01
8
Display Mode
00 = Set and Room Temperature
01 = only Set Temperature
00
9
Not available
1
A
Address
Modbus address (HEX)
01
B
Baud Rate
1
Enter Installer Menu
To Enter installer menu
1. Turn off the LRC (Home screen blank)
2. Press and hold and then until display changes (3 seconds)
3. Now choose option to change by using to toggle through options (note 3 sec time out)
4. Change the Default value using
5. Then move to next option using
M
6. Setting will auto save when timed out
Best practice
when finished setting up the LRC, turn all power OFF and ON again to allow controls to reset.
Cabling
2 versions of cable entry on rear of unit
Version 1
flying lead (RED/WHITE) to connect to for RS485 connection
Version 2
terminal on rear for A B [A = RS485+, B = RS485 -]
Version 1
Version 2
Additional notes
Long cable runs on Modbus will require 120 ohm ¼W end of line resistor.
BIAS Resistors can be used at the beginning of the bus to help control higher than normal voltages.
Example 120 ohm across A & B, 1K across A and 12VDC, 1K across B and GND
–
NOTE turn off before
installing resistors.
