Carrier 50NC Series - Page 19

19
8 - ELECTRICAL CONNECTION
Customer connection
The following connections must be made on site by the customer:
 In this case, it´s possible to install the user terminal on the electrical cabinet.
 The power supply of the electrical cabinet (230 V) must be used for terminal power.
 The output for general alarm signal is not compatible with the heat recovery coil. With this option, possibility of general alarm upon request.
 The outdoor humidity probe (optional) is connected in the same place as the ambient NTC probe. In this case the ambient probe RS485 connected on
the Field-bus will be used.
 For a cable section greater than 35 mm
2
, consult the manufacturer.
 Up to four RS485 ambient sensors can be connected in series on the fi eld-bus of the control board.
Mixing box
(option)
Indoor
module
Outdoor
module
1
2
3
4
5
8
6
7
11
12
13
14
15
16
10
9
50NC No. Connections 022 to 028 038 to 042 058 to 086 106 to 118
Package
and Split
versions
1
Main power
supply
400 III (±10%)
Standard unit
Coming soon
5G 25A x 10 mm
2
5G 25A x 10 mm
2
Coming soon
With electrical heaters (optional) 5G 63A x 35mm
2
 5G 63A x 35mm
2

2
Remote connection of the graphic terminal (by
default installed on the electrical cabinet)

Telephone cable 6 wires standard (RJ12 connector)
3
Connection of the user terminal (optional) 
2 x 1 mm
2
(230V) + 1 shielded cable for communication type AGW20 / 22 (1
braided pair + drain wire + shielding)
4 Remote off /on (optional) 2 x 1 mm
2
5
General alarm signal (optional)

2 x 1 mm
2
6 Remote Cooling/Heating (optional upon request) 2 x 1 mm
2
7
Ambient probe

NTC 2 x 1 mm
2
RS485
4 x 0,5 mm
2
+ shielding 
8 Air quality probe (optional) 3 x 1 mm
2
9 Heat recovery coil (optional) 3 x 1 mm
2
10
Connection
of mixing box
(optional)
Standard (BOX3) 5 x 1 mm
2
Enthalpique probe for energy
measurement (BOX-ENT) (opt.)
4 x 0,5 mm
2
+ shielding
Split
version
11
Power supply of
the indoor module
(W96)
Standard unit
Coming soon
4G x 2,5 mm
2
4G x 2,5 mm
2
Coming soon
With electrical heaters (optional) 4G x 10 mm
2
4G x 16 mm
2
12
Control of the
indoor module
(W30)
Standard unit 5 x 1 mm
2
With mixing box (optional) 7 x 1 mm
2
13 Power supply of the indoor fan (230 Vac) (W5) 2 x 1 mm
2
14 Control of the indoor fan (W90) 7 x 1 mm
2
15 Electrical heaters (W37) (optional) 4 x 1 mm
2
16 Heat recovery coil (W53) (optional) 4 x 1 mm
2