Daikin RXYMQ36MVJU Instruction Manual download pdf (Page 29)

EDUS39-606A-N Checks after Completion of Work

Installation of Outdoor Units 28

NOTE:

• If nothing displays on the remote controller, there might be a

problem with the connection or transmission between the

indoor unit and the remote controller. Check connections, and

check for wire breakage.

• After finishing the test operation and before using the unit by

customer, confirm that the outside panels and screws are

attached securely to the units.

5.1

Caution for Refrigerant Leaks

DANGER

• Refrigerant gas is heavier than air and replaces oxygen. A

massive leak could lead to oxygen depletion, especially in

basements, and an asphyxiation hazard could occur lead

ing to serious injury or death.

CAUTION

The installer and system specialist must follow proce-

dures to prevent leakage according to local regulations

or standards. The following standards may be applicable

if local regulations are not available.

The VRV System, like other air conditioning systems, uses

R-410A which is an entirely safe non-toxic, non-combustible

refrigerant. Nevertheless care must be taken to ensure that

air-conditioning facilities are installed in rooms large enough

to ensure that in the unlikely event of a major leak, the maxi

mum concentration level of refrigerant gas is not exceeded.

Maximum concentration level:

The maximum charge of refrigerant and the calculation of the

maximum concentration of refrigerant is directly related to the

humanly occupied space in to which it could leak.

The unit of measurement of the concentration is lb./ft

or the

weight in lb. of the refrigerant gas in 1ft

volume of the occu-

pied space.

The refrigerant is

overcharged.

Calculate again the required

amount of refrigerant to be

charged based on the piping

length, recover the refrigerant

using the refrigerant recovery

device, then achieve proper

amount of refrigerant.

The check

operation has

not performed.

Perform the check operation.

The power is not

supplied to the

outdoor unit.

Connect correctly the power

supply wiring of the outdoor

unit.

Improper type of

indoor units are

connected.

Check the type of indoor units

currently connected. If they are

not proper, replace them with

proper ones.

The stop valves

in the outdoor

unit remain

closed.

Open the stop valve on both the

gas and liquid lines.

The piping and

wiring of the

indoor unit are

not connected

correctly to the

outdoor unit.

Confirm that the piping and

wiring of the indoor unit are con-

nected correctly to the outdoor

unit.

The operation

mode on the

remote control-

ler was changed

before the check

operation.

Set the operation mode on all

indoor unit remote controllers to

COOLING.

The transmis-

sion wiring is not

connected

correctly.

Connect correctly the transmis-

sion wiring to the F1 and F2

(TO IN/D UNIT) terminals on

the PC board (A1P) in the

outdoor unit.

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Daikin RXYMQ36MVJU Instruction Manual Page 29

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