Table of Contents
Advertisement
INSTALLATION MANUAL
PART NO. 9366247074-03
VRF system RB unit
Contents
1. SAFETY PRECAUTIONS..........................................................................................1
1.1. IMPORTANT! Please read before starting ......................................................1
1.2. Special precautions.........................................................................................1
2. ABOUT THIS PRODUCT .........................................................................................2
2.1. Precautions for using R410A refrigerant .........................................................2
2.2. Special tools for R410A...................................................................................2
2.3. Accessories.....................................................................................................2
2.4. Optional parts..................................................................................................3
2.5. About unit of the length ...................................................................................3
3. CONNECTION SPECIFICATIONS............................................................................3
4. PIPING SPECIFICATIONS........................................................................................3
5. INSTALLATION WORK .............................................................................................3
5.1. Selecting an installation location .....................................................................3
5.2. Installation dimensions....................................................................................3
5.3. Hanger bolt installation ...................................................................................5
5.4. Hanging metal fi xtures ....................................................................................5
5.5. Installation of the unit ......................................................................................5
6. PIPE INSTALLATION ................................................................................................5
6.1. Pipe selection..................................................................................................5
6.2. Selecting the pipe material..............................................................................6
6.3. Pipe connection ..............................................................................................7
6.4. Installing heat insulation..................................................................................7
7. ELECTRICAL WIRING ..............................................................................................7
7.1. Safety precautions for electrical wiring ...........................................................7
7.2. Electrical requirement .....................................................................................8
7.3. Wiring ..............................................................................................................8
8. FIELD SETTING ......................................................................................................11
8.1. PC board layout ............................................................................................11
8.2. Address setting .............................................................................................12
8.3. Function setting.............................................................................................12
9. EXTERNAL INPUT ..................................................................................................12
9.1. Input select....................................................................................................12
9.2. Cooling/heating priority function....................................................................13
10. Merging 2 or 4 branches..........................................................................................13
10.1. Connection specifi cations .............................................................................13
10.2. Pipe installation (pipe selection) ...................................................................13
10.3. Electrical wiring .............................................................................................14
10.4. Field setting ..................................................................................................15
11. TEST RUN ...............................................................................................................15
11.1. Test run using outdoor unit (PC board) .........................................................15
11.2. Test run using remote controller ....................................................................15
12. CHECK LIST ...........................................................................................................15
13. INDICATOR LAMP STATUS ....................................................................................15
1. SAFETY PRECAUTIONS
1.1. IMPORTANT! Please read before starting
This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to install or service
the system so it operates safely and effi ciently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all danger, warning, and caution notices given in this manual.
WARNING:
This symbol refers to a hazard or unsafe practice which can result
in severe personal injury or death.
CAUTION:
This symbol refers to a hazard or unsafe practice which can result
in personal injury and the potential for product or property
damage.
• Hazard alerting symbols
Electrical
Safety/alert
If Necessary, Get Help
These instructions are all you need for most installation sites and maintenance condi-
tions. If you require help for a special problem, contact our sales/service outlet or your
certifi ed dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or mainte-
nance service, including failure to follow the instructions in this document.
En-1
1.2. Special precautions
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE
THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing are completed or recon-
nected and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the
wiring diagram and these instructions when wiring. Improper connections and inad-
equate earthing (grounding) can cause accidental injury or death.
• Earth (Ground) the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points
and a possible fi re hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to
help, and bend your knees when lifting to reduce strain on your back. Sharp edges or
thin aluminum fi ns on the air conditioner can cut your fi ngers.
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit's weight. It may be neces-
sary to construct a strong wood or metal frame to provide added support.
...In a Room
Properly insulate any tubing run inside a room to prevent "sweating" that can cause
dripping and water damage to walls and fl oors.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air baffl e.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting snow.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the fl are method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the fl are and union tubes
before connecting them, then tighten the nut with a torque wrench for a leak-free
connection.
• Check carefully for leaks before opening the refrigerant valves.
When Servicing
• Turn the power OFF at the main circuit breaker panel before opening the unit to
check or repair electrical parts and wiring.
• Keep your fi ngers and clothing away from any moving parts.
• Clean up the site after you fi nish, remembering to check that no metal scraps or bits
of wiring have been left inside the unit being serviced.
• After installation, explain correct operation to the customer, using the operation
manual.
Never touch electrical components immediately after the power supply has been
turned off. Electrical shock may occur. After turning off the power, always wait 5
minutes or more before touching electrical components.
• Be sure to read this manual thoroughly before installation.
• The warnings and precautions indicated in this manual contain important information
pertaining to your safety. Be sure to observe them.
• Hand this manual, together with the operation manual, to the customer. Request the
customer to keep them on hand for future use, such as for relocating or repairing the
unit.
Never touch electrical components immediately after the power supply has been
turned off. Electrical shock may occur. After turning off the power, always wait 10
minutes or more before touching electrical components.
Request your dealer or a professional installer to install this unit in accordance with
this Installation Manual. An improperly installed unit can cause serious accidents
such as water leakage, electric shock, or fi re. If this unit is installed in disregard of the
instructions in the Installation Manual, it will void the manufacturer's warranty.
Do not turn ON the power until all work has been completed. Turning ON the power
before the work is completed can cause serious accidents such as electric shock or
fi re.
If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant
comes in contact with a fl ame, it produces a toxic gas.
Installation must be performed in accordance with the requirement of NEC(National
Electrical Code) and CEC(Canadian Electrical Code) by authorized personnel only.
DANGER
WARNING
Advertisement
Table of Contents
