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Installation Instructions
Split Inverter Type
Room Air Conditioner
Before installing the
air conditioner, read
this instruction
manual thoroughly
and keep it well for
reference in the
future.
Installation Notices
Caution
⚫
Dealers must explain in details the operations to their customers according to this manual.
damages to the objects)
⚫
Wireless remote controller and parts are packed in the packing box supplied with the indoor unit.
⚫
Before installing, check if the power supply and circuitry are normal and make sure the voltage is within ±10% of the
voltage rating.
⚫
The distance of
convenience of service and maintenance in the future, install the air conditioner in the place with sufficient space in
the vicinity.
⚫
Care should be taken in cutting, extension and bending of the refrigerant piping and not to break the pipes.
As this air conditioner uses new recyclable refrigerant, "R410A" be sure to follow three principles - keeping
the refrigeration system dry, clean, and air tight, when installing the refrigerant piping.
Warning
⚫
Installation of air conditioner and electrical wiring must be handled by authorized installer only, do not attempt to handle
them by yourselves (Handling charges are additional.)
⚫
Before installing, read the installation instructions thoroughly and correctly.
⚫
Use only those specified accessories when installing, otherwise, it may cause the unit body to fall, water leakage, current
leakage and fire, etc.
⚫
When discharging, refrigerant is required during installation, be sure to use an air vent and air breather, as refrigerant will
produce toxic gas once it mixes with hot air.
⚫
When performing wiring work, be sure to follow the electrical codes and installation instructions, and also be sure to use the
power loops exclusively for the air conditioner.
⚫
When installing or moving the units, the refrigeration system (piping) must not mix with refrigerant R22 or air, except
refrigerant R410A. If air is mixed in, the system capacity will reduce, causing abnormal high pressure in the refrigeration
system that may lead to copper tube breaking and failure to occur.
Cooling Type Series
I
ndoor Units
RAS-08HT
RAS-10HT
RAS-15HT
RAS-19HT
RAS-24HT
RAS-30HT
(Failure to observe the following items may cause serious consequences or
damage to the objects)
in the installation diagram is to ensure space for the air conditioner's performance. For
(Failure to observe the following items may cause injury or death)
(Failure to observe the following items may cause injury or death)
Outdoor Units
RAC-08HTP
RAC-10HTP
【
RAC-15HTP
RAC-19HTP
Installation Notices
RAC-24HTP
RAC-30HTP
Indoor Units Installation
Instructions
Outdoor Units Installation
Instructions
1
Environmental
Protection
】
Contents
....... 1
.................. 4
.................. 9
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Related Manuals for Hitachi RAS-08HT
Summary of Contents for Hitachi RAS-08HT
- Page 1 Split Inverter Type Room Air Conditioner Environmental Before installing the Protection Cooling Type Series air conditioner, read ndoor Units Outdoor Units this instruction manual thoroughly RAS-08HT RAC-08HTP and keep it well for RAS-10HT RAC-10HTP 【 】 reference in the RAS-15HT RAC-15HTP Contents...
- Page 2 Earth wire and earth leakage circuit breaker. To prevent current leakage: ⚫ To avoid carelessness from power companies or other accidents that cause over current to get into the unit via the earth wire resulting in damage to the unit, be sure to install a circuit breaker. Refer to the dealers (the qualified technicians) for details.
- Page 3 Electric Specification Liquid Connection Wires Power Supply Models Fuse Capacity pipe pipe Specification Wire Specification RAS-08HT / RAC-08HTP Ø 9.53 RAS-10HT / RAC-10HTP Ø 2.0mm 1.25mm² Stranded RAS-15HT / RAC-15HTP Single-core Hard Ø 12.7 Ø 6.35 Wire + Blade Wire or 3.5mm²...
- Page 4 Maximum allowable height of tilt for the indoor and outdoor u n i t Handling condensate from the outdoor unit Models a (mm) RAS-08HT RAS-10HT RAS-15HT RAS-19HT RAS-24HT RAS-30HT Press in Hanging first ⚫ The outdoor unit base is provided with a drain hole for condensed water.
- Page 5 Contour of the shape of the indoor unit Ceiling unit : mm Above 70mm Models Series RAS-08HT 08~15 RAS-10HT RAS-15HT RAS-19HT RAS-24HT RAS-30HT Special screw (The diagram is an instance of RAS-20NF)
- Page 6 Drilling the wall and fitting the tube guard ⚫ When drilling a hole of Outdoor NOTICE Indoor side side Ø65mm diameter, When connecting keep the outdoor side wires, do not let the wires slightly downward and come in touch with the drill it with a small slope.
- Page 7 For the length of connection wires to be reserved, refer to the table below. Models RAS-08HT RAS-10HT RAS-15HT RAS-19HT (The diagram is an instance of RAS-08HT) RAS-24HT RAS-30HT C. Installation ⚫ Hang the indoor unit onto the installation plate. ⚫...
- Page 8 Jointing pipes After tightening with wrench, slightly rotating Remove the cap nut. backward and tighten with torque wrench. For small (Helium in the indoor unit will be diameter pipes, to avoid screwing too tightly, use a discharged) torque wrench. Don’t screw all the way in a sudden, hsiu but screw slowly...
- Page 9 Outdoor unit installation instructions ● ● ● ● Jointing the connection wires and For the fitting method of the connection wires, refer to the the power supply wires technical reference related to the electric facilities, ⚫ For handling of the junction of the connection wires, refer to the instructions of indoor units. (Refer to the diagrams below for the scheme after jointed) ⚫...
- Page 10 Preparing the pipes Thickness of copper pipes for general refrigerant pipes. The pressure of refrigerant R410A is higher than ● Nominal outer Standard outer Thickness of copper that of R22, and thus the thickness of copper diameter (inch) diameter (mm) tube (mm) pipes must comply with that shown in the right 6.35...
- Page 11 Vacuum Operation ⚫ outdoor unit contains NOTICE refrigerant without leakage Be sure to use the vacuum pump maximize the unit’s performance, be sure to exclusively for R410A or install an oil use the following vacuum pump method to check valve (solenoid valve) to prevent vacuum the system after piping work of the unidentified refrigerating oil from entering in indoor and outdoor units is finished.
- Page 12 Test run and other precautions Refrigerant recharging Test run check Test run ⚫ After installation, check the piping, wiring, length Length of Recharge of connection wires and power supply wire pipes refrigerant Maximum inserted in the terminal board and their polarities without when the piping...