Sensor Connection - Daikin Service Checker TYPE 3.1 Instruction Manual

2.2 Sensor connection
Features of sensor connection
・In case of air conditioners not conforming to the DIII-NET connection, it becomes
possible to measure temperature and pressure by connecting the optional sensor kit
(Parts Number: 999107T).
・Six temperature points and two pressure points are possible to measure. Among
these points, two measurement points of temperature can be monitored as a signal of
DC 0-5V or DC 0-1V via measuring instrument by shifting the switch.
・ Possible to use in combination with either the DIII-NET connection.
Procedures
1) Connect the sensors of a sensor kit to the Sensor connector at the front side of the
Checker TYPE 3.
WARNING : When measuring current and voltage, be sure to input a signal of
Connector
Th1 Connect air temperature thermistor (for outdoor) Th1(white).
Th2 Connect pipe temperature thermistor Th2(white).
Connect discharge pipe temperature thermistors Th3(red). Since the discharge
pipe temperature thermistors differs from other thermistors in a converting
Th3
(resistance value to temperature value) method, be sure to use the thermistor
Th3.
Th4 Connect pipe temperature thermistor Th4(blue).
Connect high pressure sensor, HP(blue). Do not connect LP since HP differs
HP
from LP in a converting(resistance value to pressure value) method.
Connect low pressure sensor, LP(red). Do not connect HP since LP differs from
LP
HP in a converting(resistance value to pressure value) method.
Connect air temperature thermistor(for indoor), Th1(white). To make Th5 valid,
Th5 place the upper switch in Th5 side. A and Th5 are not possible to use
simultaneously.
Using optional cable A(red), connect to measuring instrument, To make A valid,
place the upper switch in A side. A and Th5 are not possible to use
A simultaneously. The conversion of a voltage signal from measuring instrument
into current is set by periodical recording in the "4.2 Setting of records" of the
TYPE 3 software.
Connect air temperature thermistor (for indoor), Th4(blue). To make Th6 valid,
Th6
place the upper switch in Th6 side. V and Th6 are not possible to use
simultaneously.
0-5VDC or 0-1VDC via measuring instrument to [A] and [V] terminals.
Do not connect these terminals to directly an object to be measured
current or voltage or add more than 5VDC to these terminals since fatal
injury to human bodies by electric shock or fires and failures of air
conditioning systems may be caused.
Cable of sensor kit
Chapter 2 Connection to air- conditioner
- 12 -