Before Installation - Haier 1UH071N1ERG Installation Manual

Where there is machinery which emits electromagnetic
waves.
Electromagnetic waves may disturb the control system,
andcause malfunction of the equipment.
Where flammable gases may leak, where carbon fiber
or ignitable dust is suspended in the air or where volatile
flammables, such as thinner or gasoline, are handled.
SUch gases may cause a fire.
Where the air contains high levels of salt such as that
near the ocean.
Where voltage fluctuates a lot, such as in factories.
In vehicles or vessels.
Where acidic or alkaline vapour is present.
Do not allow a child to mount on the outdoor unit or
avoid placing any object on the unit. Falling or tumbling
may result in injury.
The unit may stop for several minutes during normal
operation for "defrosting the unit", or when in "thermostat
stop" operation.
This appliance is intended to be used by expert or trained
users in shops, in light industry and on farms, or for
commercial use by lay persons.
Provide a logbook
In accordance with the relevant national and
international codes, it may be necessary to provide a
logbook with the equipment containing at least
- info on maintenance.
- repair work,
- results of tests,
- stand-by periods,
- etc...
In Europe, EN378 provides the necessary guidance for
this logbook.

3. Before installation

3.1. Scope of this manual
This manual describes the procedures for handling,
installing and connecting
3.2. Precautions
CAUTION
Since maximum working pressure is 4.15 MPa or 41.5
bar, pipes of larger wall thickness may be required.
to paragraph "6.2. Selection of piping material" on page
10.
NOTICE: Insulation resistance of the compressor
If, after installation, refrigerant accumulates in the
compressor, the insulation resistance can drop, but if it
is at least 1 , then the machine will not break down.
Turn the power on and leave it on for six hours. Then,
check if the insulation resistance of the comressor has
risen or not.
The compressor will heat up and evaporate any refrigerant
in the compressor.
1UH071~250 units.
Check the following if the ground-fault circuit interrupter is
triggered:
Make sure that the interrupter is compatible with high
frequencies.
This unit has an inverter, so an interrupter capable of
handling high frequencies is needed to prevent
malfunction of the interrupter itself.
3.3. Precautions for R410A
The refrigerant requires strict cautions for keeping the
system clean, dry and tight.
- Clean and dry
Foreign materials (including mineral oils or moisture)
should be prevented from getting mixed into the system.
- Tight
Read "9. Precautions on refrigerant piping" on page 10
carefully and follow these procedures correctly.
Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state.(If the
refrigerant is in state of gas, its composition changes
and the system will not work properly).
The connected indoor units must be indoor units designed
exclusively for R410A.
3.4. Installation
For installation of the indoor unit(s), refer to the indoor
unit installation manual.
Illustrations show
Other types also follow this installation manual.
This outdoor unit requires the pipe branching kit(optional)
when used as the outdoor unit for the simultaneous
operation system. Refer to catalogues for details.
Never operate the unit with a damaged or disconnected
discharge thermistor and suction thermistor, burning of
the compressor may occur.
Be sure to confirm the model name and the serial no.
of the outer(front) plates when attaching/detaching the
plates to avoid mistakes.
When closing the service panels, take care that the
tigntening torque does not exceed 4.1 N.M.
Refer
6
1UH140P1ERK outdoor unit type.