Hitachi RPIL-1.5UNE1NH, RPIM-3.0UNE1NH, RPIH-5.0UNE1NH, RPIH-6.0UNE1NH, RAS-1.0UNESNH1 Installation And Maintenance Manual
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HPM2017009HA
INSTALLATION AND MAINTENANCE MANUAL
Installation and Maintenance Manual
HITACHI SPLIT AIR CONDITIONERS
Models
< Outdoor Units >
< Indoor Units >
Heat Pump Type
RPIL UNE1NH* -1.0RPIL UNE1NH* -1.5
RPIL UNE1NH* -2.0RPIM UNE1NH -3.0
RPIH UNE1NH -4.0
RPIH UNE1NH -5.0RPIH-6.0UNE1NH
RPIH-6.5UNE1NH
Heat Pump Type
RAS-1.0UNESNH1*
RAS-1.5UNESNH1*
RAS-2.0UNESNH1*
RAS-3.0UNESNH1
RAS-4.0UNESNH1
RAS-5.0UNESMH1
RAS-6.0UNESMH1
RAS-6.5UNESMH1
Cooling Only Type
RPIL TNE1NH* -1.0
RPIL TNE1NH* -1.5
RPIL TNE1NH* -2.0RPIM TNE1NH* -3.0
RPIH TNE1NH* -4.0
RPIH TNE1NH* -5.0RPIH-6.0TNE1NH*
RPIH-6.5TNE1NH*
RAS-1.0TNESNH1*
RAS-1.5TNESNH1*
RAS-2.0TNESNH1*
RAS-3.0TNESNH1*
RAS-4.0TNESNH1*
RAS-5.0TNESMH1*
RAS-6.0TNESMH1*
RAS-6.5TNESMH1*
Cooling Only Type
Contents
: The symbol refers to a hazard which can result in severe personal injury or death.
: The symbol refers to a hazard or an unsafe practice which may result in severe personal injury
or death.
: The symbol refers to a hazard or an unsafe practice which may result in personal injury,
product or property damage.
: It refers to the remarks and instruction to the operation, maintenance, and service.
DANGER
WARNING
CAUTION
NOTE
Alert Symbols：
NOTE: ●This air conditioner is designed for the following temperatures.
Operate it within this range.
Series Mode
Outdoor operating temperature range
Maximum(℃) Minimum(℃)
Heat Pump
Cooling Operation 48 -15
Heating Operation 24 -15
Cooling Only Cooling Operation 48 -15
Storage condition: Temperature -25~60℃
Humidity 30%~80%
●
The numbers in the model represent the cooling capacity in HP. For example,
●
RPIL-1.0UNE1NH or RAS-1.0UNESNH1 represent 1.0HP.
Caution Statements ...................................................................................................................................1
Composition of the Air-Conditioner............................................................................................................2
Operation manual
Special Remarks........................................................................................................................................3
Troubleshooting .........................................................................................................................................3
Diagram of Refrigerant Cycle & Wiring
1. Refrigerant Flow Diagram......................................................................................................................4
2. Electrical Wiring Diagram ......................................................................................................................4
Installation and Maintenance
1. Safety Notice .........................................................................................................................................5
2. The Tools and Instruments for Installation.............................................................................................6
3. The Installation of the Indoor Unit .........................................................................................................6
3.1 The Initial Check .............................................................................................................................6
3.2 Installation......................................................................................................................................7
4. Refrigerant Piping..................................................................................................................................7
4.1 The Piping Material.........................................................................................................................9
4.2 Piping connection ...........................................................................................................................9
5. Drain Piping .........................................................................................................................................10
6. Electrical wiring ....................................................................................................................................11
6.1 General check...............................................................................................................................11
6.2 Change of Static Pressure............................................................................................................12
7. The Installation of the Outdoor Unit.....................................................................................................13
7.1 Installation Sites............................................................................................................................13
7.2 Installation of the Outdoor Unit .....................................................................................................13
8. Refrigerant Piping................................................................................................................................14
8.1 Flaring with Tube Expander..........................................................................................................14
8.2 Connecting Piping between Indoor and Outdoor Units ................................................................14
8.3 Heat Insulation of the Refrigerant Tube........................................................................................14
8.4 Taping the Piping ..........................................................................................................................14
8.5 Finishing the Installation ...............................................................................................................14
9. Air Purging and Test Run .....................................................................................................................14
9.1 Air Purging with a Vacuum Pump ................................................................................................14
9.2 Leak Test ......................................................................................................................................15
9.3 Tidying Up the Piping ...................................................................................................................15
9.4 Test Run........................................................................................................................................15
9.5 Electrical installation .....................................................................................................................16
contacted.
We recommend that this air-conditioner is installed properly by qualified in accordance with personnel
the installation instructions provided with the unit.
Before installation, check if the voltage of the power supply at installation site is the same as the voltage
shown on the nameplate.
You must not carry on any to this product, otherwise, it may alterations cause water
leakage, short-circuit, electric shock, fire, and so on.breakdown,
Piping, welding and other such works should be carried out far away from the
flammable explosive material vessels, including the air-conditioner refrigerant, to
guarantee the of the site.safety
To protect the air-conditioner from heavy corrosion, avoid installing the outdoor unit
where can splash directly onto it or in sulphurous air near a spa. Do sea water not
install the air-conditioner where excessively high heat-generating objects are placed.
CAUTION Statements
1
DANGER
difficulties or problems, consult your dealer for help.
The air-conditioner is designed to provide you with comfortable room conditions. Use
this unit only for its intended purpose as described in this instruction manual.
If the supply cord is damaged, it must be replaced by the factory or its service department
in case of danger.
The place where this product is installed must have the reliable electrical
facility
grounding
and protection. Please do not connect the grounding of this product to various kinds of
air-feeding ducts, drain piping, lightning protection facility as well as other piping lines to
avoid receiving an electric shock and damages caused by other factors.
Wiring must be done by a qualified electrician. All the wiring must comply with the local
electrical codes.
Consider the capacity of the electric current of your electrical meter and socket before
installation.
The power wire where this product is installed is supposed to have the independent
leakage protective device and the electric current over-load protection device which are
provided for this product.
This appliance is not intended for use by persons lack experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Means for disconnection, which can provide full disconnection in all poles, must be
incorporated in the fixed wiring in accordance with the wiring rules.
Never use gasoline or other inflammable gas near the air-conditioner, which is very
dangerous.
When the air conditioner operation is abnormal, such as burnt smell, deformation, fire,
smoke, it is forbidden to continue using the air conditioner, the main power and so on,
switch of the air conditioner must be cut off immediately and the agent must be
Do not turn the air-conditioner on and off from the main switch. Use the power
ON/OFF operation button.
Do not stick anything into the air inlet and air outlet of both the indoor and outdoor
units. This is dangerous because the fan is rotating at a high speed.
WARNING
CAUTION
Read this manual carefully before using this air-conditioner. If you still have any
WARNING
Air inlet
Electric box
Air outlet
2
Composition of the Air-conditioner
Indoor unit
The conditioned air is blown out of the
air-conditioner through this outlet.
Consequently, the shape may differ for the air conditioner model you have selected.
Note: The figures are based on the external views of the standard model.
Operation
instruction will
be further specified in remote controller's manual.
Please read it carefully before using this appliance and keep it for future reference.
Remote controller (Optional)
You can control the air-conditioner with the wired controller or remote controller.
It is used for
power ON/OFF, setting the operation mode, temperature, fan speed and other functions.
There are different types of remote controllers
which can
be used.
1.0/1.5/2.0/3.0/4.0/5.0HP
6.0/6.5HP
Outdoor unit
Wired controller
HCWA21NEWH
HCRA31NEWH
＋
Remote controller
3
Operation manual
Special remarks
Troubleshooting
1. If Trouble persists
If the trouble persists even after checking the following, contact your dealer and inform them of the following
items.
(1) Unit Model Name
(2) Content of Trouble
2. No Operation
Check whether the SET TEMP is set at the correct temperature.
CAUTION
3. Not Cooling or Heating properly
Check for obstruction of air flow units.in indoor and outdoor
Check if too many heating sources are located
in the room.
Check if the air filter is clogged with dust.
Check if the doors or windows are open.
Check if the temperature condition is not within the operation range.
4. This is Not Abnormal
Odour from indoor unit
Sound from Deforming Parts
Steam from Outdoor Heat Exchanger
During defrosting operation, ice on the outdoor heat exchanger melts resulting in steam.
Dew on Air Panel
When the cooling operation continues for a long period of time under high humidity conditions, dew may
form on the air panel.
Refrigerant Flow Sound
While the system is being started or stopped, sound from the refrigerant flow may be heard.
●
●
●
Heating capacity depends on external factors like outdoor unit temperature. Heating capacity might decrease
if outdoor ambient temperature is too low.
●
●
In several minutes after the heating mode is started, the fan of the indoor unit will not run until the heat
exchanger of the indoor unit reaches a certain temperature to prevent cold draft.
●
When the outdoor temperature is too low, frost or ice may form on the outdoor heat exchanger, reducing
heating performance. When this happens, a defrosting system of the air conditioner will operate. At the same
time the fan in the indoor unit stops (or runs at a very low speed in some cases), to prevent cold draft. After
defrosting is over, the heating operation and fan speed restart.
●
●
3 minutes protection after compressor stop
To protect compressor, it will be continue to be off for at least 3 minutes once it has stopped.
5 minutes protection
Compressor must run for 5 minutes once operational. In the 5 minutes, compressor will not stop even at least
the room temperature reaches the setting temperature point unless you use remote controller to turn off the
unit (all indoor unit can be turned off by user).
Cooling operation
The fan of the indoor unit will never stop running in cooling operation. It even if the continues to operate
compressor stops working.
Anti-freezing function during cooling
When the temperature of the air from the indoor outlet is too low, the unit will run for some time under the fan
mode, to avoid frost or ice forming on the indoor heat exchanger.
Cold air prevention
Defrosting
Blowing out the residual heating air
When stopping the air conditioner in normal operation, the fan motor will run with low speed for a while to blow
out the residual heating air.
Auto re-start from of Power Break
When the power supply is recovered after power break, all presets are still effective and the air-conditioner will
run according to the previous setting.
Heating operation
●
During system start or stop, a sound might be heard. However, this is due to thermal
deformation of plastic parts. It is not abnormal.
Unpleasant odour diffuses from indoor unit after a long period of time. Clean the air filter and panels
or allow a good ventilation.
Diagram of refrigerant cycle & Wiring
4
1. Refrigerant Flow Diagram
2. Electrical Wiring Diagram
Gas piping
Wide service valve
Compressor
Accumulator
4-way valve
Heat exchanger
Liquid piping
Heating cycle
Cooling cycle
INDOOR UNIT OUTDOOR UNIT
Heat exchanger
EEV
Service valve
Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Terminal Terminal
Power supply
Power supply
SI
L
N
SI
L
N
Power connecting cord
N
L
Terminal
Terminal
SI
L
N
SI
L
N
Power connecting cord
N
W
U
V
5.0/6.0/6.5HP
1.0/1.5/2.0/3.0/4.0HP
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