Before Installation - Haier 1U160S2SP1FB Installation Manual

„ Where corrosive gas, such as sulphurous acid gas, is
produced.
Corrosion of copper pipes or soldered parts may
cause the refrigerant to leak.
„ 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 1U160 unit.
3.2 Precautions
CAUTION
Since maximum working pressure is 4.3 MPa or 43.0
bar, pipes of larger wall thickness may be required.
Refer 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.
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 R32
„ 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 R32 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 R32.
3.4. Installation
„ For installation of the indoor unit(s), refer to the indoor
unit installation manual.
„ Illustrations show 1U160S2SP1FB outdoor unit type.
„ 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.
8