Panasonic CUZ25UBEA Operations Instructions download pdf (Page 7)

7

English Safety precautions

WARNING

This appliance is ﬁ lled with R32

(mild ﬂ ammable refrigerant).

If the refrigerant is leaked and

exposed to an external ignition

source, there is a risk of ﬁ re.

Indoor unit and outdoor unit

The appliance shall be installed,

and/or operated in a room with ﬂ oor

area larger than Amin (m²) and

keep away from ignition sources,

such as heat/sparks/open ﬂ ame

or hazardous areas such as gas

appliances, gas cooking, reticulated

gas supply systems or electric

cooking appliances, etc.(Refer to

Table A of Installation instructions

table for Amin (m²))

Be aware that refrigerant may

not contain an odour, highly

recommended to ensure suitable

ﬂ ammable refrigerant gas detectors

are present, operating and able to

warn of a leak.

Keep any required ventilation

openings clear of obstruction.

Do not pierce or burn as the

appliance is pressurized. Do not

expose the appliance to heat, ﬂ ame,

sparks, or other sources of ignition.

Else it may explode and cause injury

or death.

Precaution for using R32

refrigerant

The basic installation work procedures

are the same as conventional refrigerant

(R410A, R22) models.

Since the working pressure is

higher than that of refrigerant R22

models, some of the piping and

installation and service tools are

special. Especially, when replacing

a refrigerant R22 model with a

new refrigerant R32 model, always

replace the conventional piping and

ﬂ are nuts with the R32 and R410A

piping and ﬂ are nuts on the outdoor

unit side.

For R32 and R410A, the same ﬂ are

nut on the outdoor unit side and pipe

can be used.

The mixing of different refrigerants

within a system is prohibited. Models

that use refrigerant R32 and R410A

have a different charging port thread

diameter to prevent erroneous

charging with refrigerant R22 and for

safety.

Therefore, check beforehand. [The

charging port thread diameter for

R32 and R410A is 1/2 inch.]

Must always ensure that foreign

matter (oil, water, etc.) does not

enter the piping. Also, when storing

the piping, securely seal the opening

by pinching, taping, etc. (Handling of

R32 is similar to R410A.)

•

Operation, maintenance, repairing

and refrigerant recovery should be

carried out by trained and certiﬁ ed

personnel in the use of ﬂ ammable

refrigerants and as recommended

by the manufacturer. Any personnel

conducting an operation, servicing

or maintenance on a system or

associated parts of the equipment

should be trained and certiﬁ ed.

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