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RXYQ8~18P7W1BR1
VRVIII System air conditioner
4PW44039-1D

Installation manual

16

11.4. Additional refrigerant charge

Use the described procedure below to charge the refrigerant.

1

Adding refrigerant

Charge with the outdoor unit at standstill

1.

Calculate how much refrigerant to be added using the formula
explained in the chapter 

"How to calculate the additional

refrigerant to be charged" on page 8

.

2.

Open valve C (valves A and B and the stop valves must be left
closed) and charge the required amount of refrigerant through
the liquid side stop valve service port.

(See figure 25)

When the required amount of refrigerant is fully charged,
close valve C. Record the amount of refrigerant that was
added on the additional refrigerant charge label provided
with the unit and attach it on the back side of the front panel.
Perform the test procedure as described in 

"In case

refrigerant was added (pre-charging, charging in heating
mode)" on page 22

.

When the additional charging is not complete, perform the
procedure explained in the chapter 

"Charge with operating

outdoor unit" on page 17

.

When charging a system, charging over the allowable
quantity can cause liquid hammer.

Always use protective gloves and protect your eyes
when charging refrigerant.

When the refrigerant charging procedure is done or
when pausing, close the valve of the refrigerant tank
immediately. If the tank is left with the valve open, the
amount of refrigerant which is properly charged may
get off point. More refrigerant may be charged by any
remaining pressure after the unit has stopped.

Electric shock warning

Close the electric box lid before turning on the main
power.

Perform the settings on the circuit board (A1P) of the
outdoor unit and check the LED display after the
power is on via the service lid which is in the lid of the
electric box. 
Operate switches with an insulated
stick (such as a ball-point pen) to
avoid touching the life parts. 
Make sure to re-attach the
inspection cover into the switch box cover after the job
is finished.

If the power of some units is turned off, the charging
procedure can not be finished properly.

Make sure to turn ON the power 6 hours before
starting the operation. This is necessary to warm the
crankcase by the electric heater.

If operation is performed within 12 minutes after the
indoor and outdoor units are turned on, the H2P-LED
will be lit and the compressor will not operate.

NOTE

See

 

"11.3. Stop valve operation procedure" on

page 15

 for details on how to handle stop valves.

The refrigerant charging port is connected to the
piping inside the unit.
The unit's internal piping is already factory
charged with refrigerant, so be careful when
connecting the charge hose.

After adding the refrigerant, do not forget to close
the lid of the refrigerant charging port.
The tightening torque for the lid is 11.5 to
13.9 N•m. 

In order to ensure uniform refrigerant distribution,
it may take the compressor ±10 minutes to start
up after the unit has started operation. This is not
a malfunction.

1

Measuring instrument

2

Tank (siphon system)

3

Charge hose

4

Liquid line stop valve

5

Gas line stop valve

6

Stop valve service port

7

Valve B

8

Valve C

9

Valve A

10

Outdoor unit

11

Refrigerant charge port

12

To indoor unit

13

Interunit piping

14

Refrigerant flow

Summary of Contents for VRVIII RXYQ-PR1

Page 1: ...INSTALLATION MANUAL RXYQ8P7W1BR1 RXYQ10P7W1BR1 RXYQ12P7W1BR1 RXYQ14P7W1BR1 RXYQ16P7W1BR1 RXYQ18P7W1BR1 System air conditioner...

Page 2: ...d 500 mm a 50 mm b 100 mm c 50 mm d 500 mm a 200 mm b 300 mm a 10 mm b 300 mm c 10 mm d 500 mm e 20 mm a 50 mm b 100 mm c 50 mm d 500 mm e 100 mm a 200 mm b 300 mm e 400 mm A B C D A B 3 a 10 mm b 300...

Page 3: ...MULTI UNIT A1P 3 8 3 4 1 5 5 2 2 TO IN D UNIT F1 F2 DS1 1 2 3 4 OFF ON O U T I N F1 F2 P1 P2 A B C A B C 1 DS1 1 2 3 4 OFF ON O U T I N P1 P2 1 2 3 6 5 7 8 9 10 11 1 A 4 4 2 2 2 5 6 3 2 3 1 4 5 6 7 1...

Page 4: ...isesti 14 za p edpokladu e jsou vyu v ny v souladu s na imi pokyny odpov daj n sleduj c m norm m nebo normativn m dokument m 15 u skladu sa slijede im standardom ima ili drugim normativnim dokumentom...

Page 5: ...ujam temperat ra TS TSmin Minim l temperat ra zem spiediena pus L C TSmax Pies tin t temperat ra saska ar maksim lo pie aujamo spiedienu PS M C Dzesin t js N Spiediena dro bas ier ces iestat ana P bar...

Page 6: ...nal heating capacities ranging from 16 0 to 56 5 kW The RXYQ P7 units can be combined with Daikin indoor units for air conditioning purposes and suitable for R410A The present installation manual desc...

Page 7: ...XYQ18 360 585 29 NOTE The table above shows the possible total capacity and number of possible indoor units If the total capacity of the connected indoor units exceeds the capacity of the outdoor unit...

Page 8: ...ake sure to provide for adequate measures in order to prevent that the outdoor unit be used as a shelter by small animals Small animals making contact with electrical parts can cause malfunctions smok...

Page 9: ...ve which can evacuate to 100 7 kPa 5 Torr 755 mm Hg 1 Packaging material 2 Opening large 3 Belt sling 4 Opening small 40x45 5 Protector NOTE Use a belt sling of 20 mm wide that adequately bears the we...

Page 10: ...pressure regulator for the nitrogen released when doing the brazing should be set to 0 02 MPa or less See figure 11 Do not use anti oxidants when brazing the pipe joints Residue can clog pipes and br...

Page 11: ...ns when connecting field piping Perform brazing at the gas stop valve before brazing at the liquid stop valve Add brazing material as shown in the figure Be sure to use the supplied accessory pipes wh...

Page 12: ...utdoor and BP units H2 40 m Between BP and BP units Difference in height Difference in height between BP and BP units H3 15 m Between indoor and indoor units Difference in height Difference in height...

Page 13: ...0 22 2 290 x 420 28 6 12 7 420 x 585 15 9 Between refrigerant branch kit and BP unit Pipe size for direct connection to BP unit must be based on the total capacity of the connected indoor units c d e...

Page 14: ...stop valve Gas side stop valve Performing the airtightness test and vacuum drying Valve A must always be shut Otherwise the refrigerant in the unit will pour out Close Open Open Close Close NOTE Make...

Page 15: ...or discharge M1C M3C R50 R59 Resistor R95 Resistor current limiting S1NPH Pressure sensor high S1NPL Pressure sensor low S1PH S3PH Pressure switch high T1A Current sensor A6P A7P SD1 Safety devices in...

Page 16: ...in the grounding This unit uses an inverter and therefore generates noise which will have to be reduced to avoid interfering with other devices The outer casing of the product may take on an electrica...

Page 17: ...the electric box lid 2 Transmission wiring 3 Pipe opening 4 Conduit 5 Power wiring and ground wiring 6 Cut off the shaded zones before use 7 Through cover 1 Knockout hole 2 Burr 3 If there are any pos...

Page 18: ...res 3 core wire cables are allowable for the cooler heater changeover remote controller only Be sure to keep the power line and transmission line apart from each other Be careful about polarity of the...

Page 19: ...selector etc Precautions when laying power wiring Do not connect wiring of different thicknesses to the power terminal block Slack in the power wiring may cause abnormal heat When connecting wiring w...

Page 20: ...ay only be charged after performing the leak test and the vacuum drying For factory charge refer to the unit name plate NOTE National implementation of EU regulation on certain fluorinated greenhouse...

Page 21: ...ter the unit has stopped Electric shock warning Close the electric box lid before turning on the main power Perform the settings on the circuit board A1P of the outdoor unit and check the LED display...

Page 22: ...display is shown open valve A and close the frontpanel If the frontpanel is left open the system can not operate properly during the refrigerant charging The state of this LED is not important 9 Compl...

Page 23: ...minute x c x x x x w Start up control for the next 2 minutes x c x x x w x Waiting for stable heating conditions for the next 15 minutes according to the system x c x x x w w H1P H2P H3P H4P H5P H6P...

Page 24: ...s a ball point pen to avoid touching live parts Make sure to re attach the inspection cover 1 into the switch box cover 2 after the job is finished WARNING ELECTRIC SHOCK Caution when performing servi...

Page 25: ...adjust the LED indication to the settings as shown below in the field marked 2 Push the button and the setting is defined 1 LED H1 8P 2 Push button switches BS1 BS5 3 Dip switch 1 DS1 1 4 4 Dip switc...

Page 26: ...on of low noise operation state x standard operation factory setting w operation 4 Indication of power consumption limitation setting x standard operation factory setting w operation Possible function...

Page 27: ...ose all front panels except the front panel of the electric box 2 Turn ON the power to all outdoor units and the connected indoor units Be sure to turn on the power 6 hours before operation in order t...

Page 28: ...concentration level of refrigerant gas is not exceeded in the unlikely event of major leak in the system and this in accordance to the local applicable regulations and standards Maximum concentration...

Page 29: ...to revise the system Please consult your supplier 15 DISPOSAL REQUIREMENTS Dismantling of the unit treatment of the refrigerant of oil and of other parts must be done in accordance with relevant local...

Page 30: ...NOTES NOTES...

Page 31: ...26 12 13 14 15 16 5 1 7 10 3 2 9 6 6 6 6 7 4 11 8 6 6 6 6 6 6 7 7 9 8 4 11 6 6 1 10 3 2 6 6 6 6 27 2 1 1 1 2 3 4 4 3N 50 Hz 1 50 Hz 26 27...

Page 32: ...4PW44039 1D Copyright Daikin...

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