Electrical Connections - Carrier CRC2 - NTC Installation Manual

NTC Room Controller 2
Electrical connections and Room Controller 2 configuration
Connection of Room Controller 2 to the NTC
control panel box.
waRNING: Before connecting any wiring to the Room Controller 2,
turn off all power to the unit that will supply power to the Room
Controller, 2. Electrical shock can cause personal injury or death.



• Keep the MODE button pressed for at least 5 seconds to enter the
configuration menu. "1-" is displayed on the screen, which represents
the first item that can be displayed and configured.
• To check the 1- item value, press the MODE button. Press UP and
DOWN keys to change the value. Press the MODE button to confirm the
selected value. Now 1- appears again on the display.
• To display or change the following items, press UP or DOWN keys until
the desired item is displayed.
Keep it pressed for at
least 5 seconds
• Press MODE button to display the value and change it by pressing UP
or DOWN keys. Do the same for the other items.
• To confirm a changed value, press MODE button or the change will not
be stored.


P
G
C
I
Check the
value
up
down
Remove the main board from the control panel box for easier access
to electric connections.
The Room Controller2 must be connected as shown in the figure on
the left. If connection between the unit and the CRC2 is longer than 3
meters (10 ft), use a screened cable BElDEN 9842.
 Room Controller2 J2 connector.
 Remote controlled connector
 Signal sent to the unit (C)
 Signal received by the unit (I)
 Ground (G)
 +12V (P)

wiring Materials required (supplied by installer)
• 1 small screwdriver
• For distances longer than 3 meters (10 ft), the recommended
cable is BELDEN 9842 or a 4x0.5mm2 multiple double insulated
cable (H03VV-F).
a
• To exit from the menu press FAN button while one item is displayed
(1-,2-, etc.), or wait 10 seconds without pressing any button.
• The configurable values are shown in the table. All values set by the
manufacturer are underlined in the "Values" column.
E N G L I S H
up
Change
the value
down
To check /change the following
item values (3-, 4-...),
repeat from a
Store by
pressing MODE
GB - 5