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15 

English

Piping size and heat insulation:

5. 

Refer to “

6-1 Selection of piping material

”, “

6-5 Heat 

insulation of the piping

”.

Check of stop valve:

6. 

Confi rm that the stop valve is open on both the liquid line 
and gas line.
Record of amount of additional refrigerant:

7. 

Record the amount on the label sticked on the back of the 
front panel.
Measurement of insulation in main power circuit:

8. 

Use the megatester for 500 V.

• 

Do not use any megatester for low voltage electric circuits 

• 

except 230 V.
(Wiring between the outdoor unit and the indoor unit)

 CAUTION

<To piping technician>

Make sure to open the stop valve after fi nishing the piping 

• 

work.
(Operating the air conditioner with the stop valve shut may 
damage the compressor.)

TEST OPERATION PROCEDURE

9. 

A crankcase heater is mounted for smooth startup.  Make 
sure to turn on the power 6 hours before starting opera-
tion for supplying the power to the crankcase heater.

 WARNING

Make sure to close the outer panel before leaving the 

• 

outdoor unit in the power ON status.
To avoid injury, always make sure that the circuit breaker on 

• 

the power supply panel of the installation is switched off 
before doing any work.

Cautions before turning on the power

Put the insulating cover securely onto the electric parts box.

 

After turning on the power, check the settings and LED 

 

indicators on the PC board (A1P) in the outdoor unit 
through the opening of the insulating cover.

Power on and check operation

9-1 

Make sure to perform the check operation after installation. 

• 

(If the air conditioner is operated using the indoor remote 
controller without performing the check operation, the mal-
function code “U3” is displayed in the indoor remote control-
ler, and normal operation is disabled.)

In the check operation, the status of the outdoor unit is 

• 

checked, and incorrect wiring is checked for.

(1) •  Close the outer panel 

of the outdoor unit.

 

•  Turn ON the power to 

the outdoor unit and 
indoor units.

 

Caution

Make sure to turn on the 
power 6 hours before 
starting operation for 
supplying the power to 
the crankcase heater.

(2) •  Open the outer panel of the outdoor unit.

 

•  Check the LED on the PC board (A1P 

and A2P) in the outdoor unit to see if the 
data transmission is performed normally.

One outdoor 
unit installed 

H1P

H5P

H4P

H6P

H7P

H2P

H3P

HAP

Blinking

ON

OFF

LED display:

LED display 
(Default 
status 
before 
delivery)

A1P

A2P

SER

VICE MONIT

OR

MODE

IND

SLA

VE

MASTER

TEST/HWL

C/H 

SELE-

CT
OR

L.N.O

.P

.

DEMAND

The power is 
supplied to the 
outdoor unit.
Take due care 
during the work to 
prevent electric 
shock.

(3) •  When performing the 

low-noise operation 
(L.N.O.P.) or demand 
(DEMAND) operation 
upon request from the 
customer, perform the 
setting using the 
pushbutton switches (BS1 
to BS5) on the PC board 
(A2P) in the outdoor unit.

 

•  Press each pushbut-

ton switch from the 
opening of the 
insulation cover. 
(Do not remove the 
insulation cover.)

The power is supplied to the 

 

outdoor unit. Take due care during 
the work to prevent electric shock.
Before using the pushbutton 

 

switches (BS1 to BS5) for setting, 
confi rm that the microcomputer 
(SERVICE) monitor is lit.
For the setting method, refer to the 

 

[Service Precautions] label 
attached on the back of the front 
panel of the outdoor unit. (Make 
sure to write the contents of setting 
on the [Service Precautions] label.)

(4)  Confi rm that the shutoff 

valves are open on both 
the liquid and gas lines. If 
they are closed, open them.

 

Caution

Do not leave any 
shutoff valve closed.
Otherwise the 
compressor will fail.

(5)  Press and hold the test 

run button (BS4) for 
5 seconds or more to start 
the check operation.
For the details, refer to the 

Check operation method

 

on the [Service Precau-
tions]  label.

When leaving the outdoor unit during 

 

the check operation for unavoidable 
reasons, ask another installation 
worker to watch the outdoor unit, or 
close the outside panel.
The system operates the check 

 

operation for about 15 minutes 
(30 minutes maximum), then stops 
automatically.
The system can start normal operation 
about 5 minutes after the check 
operation if the remote controller does 
not display any malfunction code.
During the check operation, the 

 

status under execution is indicated 
on the remote controller.

(6)  After the check operation, make sure to close the outside panel 

of the outdoor unit.

01_EN_3PA60114-14U.indd   15

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2/24/2009   5:23:14 PM

2/24/2009   5:23:14 PM

Summary of Contents for SkyAir RZQ18PVJU

Page 1: ... This manual should be left with the equipment owner Lire soigneusement ces instructions avant l installation Conserver ce manuel à portée de main pour référence ultérieure Ce manuel doit être donné au propriétaire de l équipement Lea cuidadosamente estas instrucciones antes de instalar Guarde este manual en un lugar a mano para leer en caso de tener alguna duda Este manual debe permanecer con el ...

Page 2: ...act with fire such as from a fan heater stove or cooking device Exposure to this gas could cause severe injury or death After completing the installation work check that the refrigerant gas does not leak Refrigerant gas may produce toxic gas if it comes in contact with fire such as from a fan heater stove or cooking device Exposure to this gas could cause severe injury or death Safely dispose of t...

Page 3: ... the refrigerant pipes Do not turn off the power immediately after stopping operation Always wait at least five minutes before turning off the power Otherwise water leakage and trouble may occur Do not use a charging cylinder Using a charging cylinder may cause the refrigerant to deteriorate The refrigerant R410A requires strict cautions for keep ing the system clean dry and tight A Clean and dry ...

Page 4: ...D a 0 5 59 115 41 50 50 43 70 95 81 50 23 77 60 67 82 57 A Outdoor temperature FDB B Indoor temperature FWB C Outdoor temperature FWB D Indoor temperature FDB Range for continuous operation Range for pull down operation Range for warming up operation Range for operation Technical specifications 2 2 a and b in the table indicate the operating condition shown in the figure bottom left Model RZQ18PVJ...

Page 5: ...e the air flow rate of the outdoor unit is reduced the outlet air is sucked again short circuit and the following effect may be caused The capacity is deteriorated The adhered frost increases during heating operation The operation is stopped by pressure rise If excessive strong wind continuously blows from the air outlet side of the outdoor unit the fan may rotate in the reverse direction at high ...

Page 6: ...or unit is installed individually 1 When an obstruction is present only on the air inlet side 4 or more When an obstruction is present on the both sides 4 or more 4 or more 4 or more When two or more outdoor units are installed side 2 by side When an obstruction is present on the both sides 40 or more 12 or more 8 or more When an obstruction is present also in the upward area When one outdoor unit...

Page 7: ...ts are installed side 2 by side 12 or more H L 40 or more L H When an obstruction is present also in the upward area When one outdoor unit is installed individually 1 L A 20 or less 40 or more 10 or more H The dimensional relationship between H L and A is as shown in the table below L A L H 0 L 1 2H 30 1 2H L H 40 H L Install the frame to achieve L H NOTE Close the area under the frame so that the...

Page 8: ... L A L H 0 L 1 2H 4 1 2H L H 8 H L Install the frame to achieve L H NOTE Close the area under the frame so that the outlet air does not bypass there When only two outdoor units are installed side by 2 side 60 or more 20 or less H L A 40 or more The dimensional relationship between H L and A is as shown in the table below L A L H 0 L 1 2H 10 1 2H L H 12 H L Install the frame to achieve L H NOTE Clo...

Page 9: ...oundation bolts should be protruded by 15 16 in Refer to figure 13 16 Resin washer Drain treatment In a location where drain from the outdoor unit may cause troubles for example where drainage may splash on gen eral passersby perform the drain piping work using the drain plug optional For drain treatment space of at least 4 in is required under the bottom frame of the outdoor unit In the drain pip...

Page 10: ...film inside the pipes adversely affecting valves and compressor in the refrigerating system and preventing normal operation DANGER Use of oxygen could cause an explosion resulting in severe injury or death Only use nitrogen gas Refrigerant gas may produce toxic gas if it comes in contact with fire such as from a fan heater stove or cooking device Exposure to this gas could cause severe injury or d...

Page 11: ...g 6 6 The unit has been checked for leaks by the manufacturer Confirm that the valves are firmly closed before airtight test or vacuumdrying To prevent entry of any impurities and insure sufficient pres sure resistance always use the special tools dedicated for R410A Perform the following inspections securely after the piping work Airtight test Make sure to use nitrogen gas For the service port po...

Page 12: ...ls you exclusively use on R410A installations to withstand the pressure and to prevent foreign materials from mixing into the system Procedures for charging additional refrigerant Nitrogen Dotted lines represent field piping Cylinder Stop valve service port Vacuum pump Weighing scale Charge hose R410A Pressure reducing valve Outdoor unit Indoor units Liquid line Gas line Siphon system Valve A See ...

Page 13: ...ec tion procedure CAUTION To electrician Do not operate the air conditioner until the refrigerant piping work is completed Operating the air conditioner before the refrigerant piping work is completed may damage the compressor Install an earth leakage circuit interrupter The inverter is provided in the air conditioner In order to prevent malfunction of the earth leakage circuit interrupter itself ...

Page 14: ...re it as described in 7 3 Power supply wiring connection procedure Fix the wiring between the units in accordance with 7 4 Transmission wiring connection procedure Secure the wirings with the clamps accessory so that do not touch the piping Make sure the wirings will not be pinched by the front panel and close the panel firmly Route the conduit along the unit by using a elbow socket and so on to p...

Page 15: ...e table below for tightening torque for the terminal screws Tightening torque ft lbf M5 Power supply and ground terminal block 1 76 2 15 M4 Shielded ground 0 87 1 06 M3 5 Transmission wiring terminal block 0 58 0 72 Transmission wiring connection procedure 7 4 If an excessive force is applied while connecting a cable to the terminal block on the PC board the PC board may be damaged IN D OUT D F1F2...

Page 16: ...he power to the crankcase heater 2 Open the outer panel of the outdoor unit Check the LED on the PC board A1P and A2P in the outdoor unit to see if the data transmission is performed normally One outdoor unit installed H1P H5P H4P H6P H7P H2P H3P HAP Blinking ON OFF LED display LED display Default status before delivery A1P A2P SERVICE MONITOR MODE IND SLAVE MASTER TEST HWL C H SELE CTOR L N O P D...

Page 17: ...ration button since it was first installed a malfunc tion code U3 is displayed In this case perform the check operation by referring to 9 1 Power on and check operation When a malfunction code is displayed in the remote controller Check a malfunction code in the remote controller connected to the indoor unit Malfunction code Cause Solution E3 The stop valves in the outdoor unit remain closed Open ...

Page 18: ...in to which it could leak The unit of measurement of the concentration is lb ft the weight in lb of the refrigerant gas in 1ft volume of the occu pied space Compliance to the local applicable regulations and standards for the maximum allowable concentration level is required Direction of the refrigerant flow Room where refrigerant leak has occurred outflow of all the refrigerant from the system Pa...

Page 19: ...3PA60114 14U EM08A096 0902 HT ...

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