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Do not use this product in the following locations. Using this product in such locations may cause communications becoming
unstable or not possible. Near wireless communication equipment that uses the same frequency band (2.4GHz) as this
product. Places where there are magnetic fields from equipment such as microwave ovens, or static electricity or radio wave
interference occurs. (Radio waves may not reach depending on the environment.)
4.2 Installing the unit
The module is designed to be placed on a DIN rail in a suitable enclosure.
_5. Installation of temperature
The temperature sensor must be installed so that it has good thermal contact with the surface of the sensed pipe.
Zip tie, aluminum tape, or equivalent may be used to fix the sensor to the pipe.
The full length of the sensor must be covered with suitable insulation material so that the temperature reading is not
influenced by surrounding air temperature.
Recommended length of sensor cable is 2m.
as noise shield wire. Longer
measurement. Cable15m is normally possible as long as shielded cable is used and ground loops in shield are avoided.
5.1 Placement of temperature sensor
Optimal sensor placement depends on intended use of the system.
The temperature sensor should be installed where the temperature of condensation and evaporation can be detected
securely.
_6. Electrical
wiring_
Electrical work must be performed in accordance with this Manual by a person certified under the national or regional
regulations. Be sure to use a dedicated circuit for the unit. An insufficient power supply circuit or improperly performed
electrical work can cause serious accidents such as electric shock or fire.
Before starting work, check that power is not being supplied to the all units.
Use ones specified by the manufacturer. Improper connections, insufficient insulation, or exceeding the allowable current can
cause electric shock or fire.
For wiring, use the prescribed type of cables, connect them securely, making sure that there are directly no external forces of
the cables applied to the terminal connections. Improperly connected or secured cables can cause serious accidents such as
overheating the terminals, electric shock, or fire.
Always fasten the outside covering of the connection cable with the cable clamp so that it would satisfy of external force to
conform to the regulations and law. (If the insulator is chafed, electric discharge may occur.)
Do not modify the power cables, use extension cables, or use any branches in the wiring. Improper connections, insufficient
insulation, or exceeding the allowable current can cause electric shock or fire.
Match the terminal board numbers and connection cable colors with those of the outdoor unit. Erroneous wiring may cause
burning of the electric parts.
Securely install the electrical box cover on the unit. An improperly installed electrical box cover can cause serious accidents
such as electric shock or fire through exposure to dust or water.
If install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit could result.
Install an earth leakage breaker. In addition, install the earth leakage breaker so that the entire AC main power supply is cut
off at the same time. Otherwise, electric shock or fire could result. If you remove the earth leakage breaker such as safety
device when service, make sure to be return it to the original condition.
If the supply cable is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons to
avoid a hazard.
Take special precaution for connection to the external controller. Make sure the wiring for the external input and output
signals is correct. Miswiring of these cables could damage the entire system.
When you push the SW on the PCB, static electricity charged in the body may cause malfunction of the PCB. Please follow
the cautions below:
Establish an earth (ground). Do not touch terminals of parts and patterns implemented on PCB. Touch metal part for more
than 10 seconds to discharge static electricity charged in the body.
sensor_
If cable length of 2 m or more is necessary, select the proper wire type, such
cables may be used if proper precautions are taken to avoid electrical noise from influencing the
Page 4 of 8
WARNING
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