Installation manual
- 1 -
This manual describes how to install the centralized controller and wiring. Before installing the controller, read the 
 1 Safety Precautions section carefully to ensure proper installation.
Safety symbols used in this manual
The following symbols are used in this manual to indicate the type and severity of potential consequences that may result when 
given instructions are not followed exactly as stated.
Retain the Installation Manual and the Instruction Book for future reference. Make sure both the Installation Manual and the 
Instruction Book are passed to any future air condition system users.
1 Safety Precautions
 WARNING
Indicates a risk of death or serious injury.
 CAUTION
Indicates a risk of injury or damage to the controller.
 WARNING
 CAUTION
The controller must be professionalling installed.
Improper installation by an unqualified person may result in 
electric shock or fire.
Make sure the controller is securely mounted so that it 
will not fall.
Only use specified cables. Securely connect each 
cable so that the weight of the cable is not applied to 
the connectors.
Loose or improper connections may result in heat 
generation or fire.
Do not attempt to modify or repair the controller.
Modification or improper repair may result in electric shock 
or fire.
Consult your dealer when repairs are necessary.
Securely install the controller according to the 
installation manual.
Improper installation may result in electric shock or fire.
Electric work must be perform by authorized 
personnel according to the local regulations and the 
instructions detailed in the installation manual.
Inadequate circuit capacity or improper installation may 
result in electric shock or fire.
Ask your dealer or an authorized technician to move 
the controller.
Improper installation may result in electric shock or fire or 
damage to the controller. 
Do not install the controller where there is a risk of 
flammable gas.
If the leaked gas accumulates around the controller, it may 
ignite and cause an explosion.
Do not use the controller in an environment high in oil, 
steam, or sulfuric gas.
These substances may have adverse effects on the 
performance of the controller or damage its parts.
To avoid the risk of electric shock or malfunction of 
the controller, install the controller in a 
non-condensing environment.
Do not install this controller in a steamy place, such as a 
bathroom or kitchen.
Do not install this controller where an acid or alkaline 
solution or special chemical spray is used frequently 
to avoid electric shock or malfunction.
When installing the controller in a hospital or communication facility, take appropriate measures to reduce noise 
interference.
Inverter equipment, generators, high-frequency medical equipment, or radio communication equipment may interfere with 
the normal operation of the controller, or the noise from the controller may interfere with the medical practice or cause 
image distortion and static noise.
To prevent over-heating and fire, perform wiring so 
that the weight of the cable will not strain the 
connectors.
Seal the wire lead-in port with putty to prevent the 
entry of dew, water, and insects to avoid electric shock 
or malfunction of the controller.
Do not wet the controller.
Water may damage the controller and cause an electric 
shock.
Do not install this controller where the ambient 
temperature exceeds 40°C (104°F) or drops below 0°C 
(32°F).
To prevent deformation and malfunction, install the 
controller out of direct sunlight.
AG-150A should be installed no higher than 1.8 m from 
the floor.
To reduce the risk of electric shock, install and wire the 
unit with the power to the PAC-SC51KUA power supply 
unit turned off.
Use specified wires with the proper current carrying 
capacity to prevent current leakage, over-heating, or 
fire.
Do not touch the PCB (Printed Circuit Board) either 
with your hand or a tool.
Keep the PCB dust-free to prevent fire or malfunction.
To avoid the risk of electric shock or damage to the 
controller, do not touch the touch panel or USB 
storage device connector with wet hands.
To avoid the risk of electric shock or damage to the 
controller, do not press the touch panel with sharp 
objects.
Do not apply an AC voltage or a voltage higher than 
32VDC to the M-NET or the Power (24VDC) terminal 
blocks on the controller to avoid damage to these 
parts or fire.
Use a security device such as a VPN router when 
connecting the AG-150A to the Internet to prevent 
unauthorized access.










