Hitachi P-N23NA2 Service Manual

6 Optional functions
Complementary systems
SMGB0099 rev.0 - 12/2016
231
6
CO
2
sensor
On-screen display: E4.
This signal controls the inlet of outdoor air according to the concentration of CO
2
inside the room.
Connect the cables as indicated in point “6.1.1 Available ports”. Only CN3 contacts 1 and 2 can be connected.
The signal has the following control logic:
Connector Contact number X1 Damper valve
CN3 1, 2
ON —
OFF Enabled
Compatibilities between optional signals
The following table shows the compatibility between the different optional signals:
PC-ARPFE
optional
functions
Room
thermostat
Remote
control
thermistor
Remote
thermistor
Wireless
remote
control
Outdoor
cooling
mode
Enthalpy
sensor
CO
2
sensor
Room thermostat – – – – – – – –
Remote control
thermistor
C8
– – – – O O O
Remote thermistor – – – – – – – –
Wireless remote
control
– – – – – O O O
Outdoor cooling
mode
E1
– O – O – – –
Enthalpy sensor
E2
– O – O – – –
CO
2
sensor
E4
– O – O – – –
Not available: –
Available: O

Hitachi P-N23NA2 Specifications

General

Brand	Hitachi
Model	P-N23NA2
Category	Air Conditioner
Language	English