Daikin RZVFQ50, Installation Manual

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13.CAUTION {RZVFQ50,71AV16)
THIS IS NECESSARY FOR AFTER
SERVICE, SO PLEASE REQUEST
CUSTOMER TO KEEP THIS PAPER.
CAUTION (NEW REFRIGERANT R32 SERIES)
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WARNING
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ELECTRIC SHOCK CAUTION
O Caution about electric shock when do service inspection.
1. After intercept power supply, do not open outside panel for 10 minutes.
2. Follow manufacturing label on electric box cover, please take off outdoor fan motor
connector to confirm voltage and body static electricity discharge.
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General caution items when do service inspection
Caution to confirm compressor and fan motor running
Do not directly connect power input (3 Phase 50Hz) to compressor and fan motor.
(If not connect to print board (PCB), compressor and fan motor will be burned cut.)
Caution when recharge refigerant
1. To prevent the mixing of impurities, pressure resistance and contamination mix,
please use manifold gauge especially for R32.
2. Make sure to do Nitrogen blow if brazing when flare connection.
Apply ether oil or ester oil at inside flare only.
3. Do air tight test at 4.1 7MPa
4. Do dry vacuum, make sure to charge refrigerant in liquid condition from liquid side
service port. (Compressor will be broken if charge from gas side service port.)
Caution when use outdoor PCB
Make sure to touch earth terminal and earthed metal before touch pcb,
to prevent electric shock.
Caution when break down diagnosis from letter code in remote control
Please refer to service guide or outdoor unit installation manual.
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Charging refrigerant
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•Charging the system with refrigerant
(For more infonmation such as calculation method of additional refrigerant charge, additional
charge method, refrigerant charge caution, refer to the Installation Manual and Technical Guide.)
• For refrigerant charge, be sure to charge from the service port of the liquid side stop
A\
valve in liquid states.(lf you charge from the service port of the gas side stop valve,
� it may break the compressor.)
• Never charge other than the specified refrigerant. (It may cause fire and bursting.)
Table 1. Chargeless piping length
Liquid piping size Pipe length which is not required additional charging
¢6.35 x t0.8mm
10m
1. In case of additional refrigerant charging
Please add refrigerant amount according to the following table.
Pipe length which
Additional ref. amount
is not required Outdoor Liquid piping size
addi1ional
chari;ing
above 1 Omtr.
RZVFQ50,71AV16
¢6.35 x t0.8mm 10m
20gm/mtr
2. Total refrigerant charging (Details please see service guide)
1. Please recover the refrigerant until becoming 0.09 Mpa (gauge
pressure: -0.011MPa) or less by the refrigerant recovery machine
from stop valve service port (liquid·gas side) at the same time.
2. Exchange service parts · Modify leak point.
3. Perform airtightness test air-purge.
Please refer installation manual of outdoor unit or service guide.
4. Charge refrigerant amount selected by table 2 from liquid stop
valve service port.
Caution Do not turn on power during evacuation. The motor
may be damaged due to vacuum discharge.
Table 2 Charge refrigerant amount (After a leak etc ) ...
Piping length, R 32 complete
Outdoor Liquid piping size
additional amount ( g)
5~10m
20m
RZVFQ50AV16
¢6.35 x 10.8mm 980g 1180g
RZVFQ71AV16 i/,6.35
x 10.8mm
1040g
1240g
• Making a record of the added refrigerant charge amount
Max.
Pipe
Length
20mtr
Be sure to record the piping length and added refrigerant charge amount or refrigerant recharge amount
with an oil-based or other indelible marker so the figures will not fade over time.
This information is necessary for after service and maintenance.
Liauid oioina size
i/,6.35
mm x t0.8mm
Refriaerant oioina lenath m
Additional refrigerant charging kg
Recharge of refrigerant kg
How to execute a pumping-down (for example,when moving or
reinstalling an indoor or outdoor unit)
The outdoor unit is equiped with a high pressure switch to protect the compressor.
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Caution
I Never short-circuit the high pressure switch during pump-down operation.
• It is not allowed to let the refrigerant out into the air.
The refrigerant should be recovered completely.
• Although pumping-down operation allows most of the refrigerant to be recovered in a short
period of time, some refrigerant will remain inside the indoor unit and the refrigerant piping.
Using a refrigerant recovery machine, recover remaining refrigerant from the stop valve
service port until the pressure falls to 0.09MPa (gauge pressure:-0.011 MPa) or less.
• Be sure to execute the pumping-down before refrigerant piping and wiring is taken off.
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For pumping-down operation
1. Please follow the !Caution about electric shock when service inspection J
which attached on Top panel (Caution: Do not take off the connector X106A)
2. To prevent electric shock, please protect power input terminal block by insulation sheet
refer to below figure.
3. Turn on the power supply and carry out pumping-down operation acoording to the following procedure.
Insulation sheet
Outdoor Unit figure Protection method
/2\
To prevent electric shock when inspection, protect by use
l.Ll. insulation sheet on ower in ut terminal block and rint board A2P
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For pumping-down operation procedure
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1. Remove the valve caps from the liquid stop valve and the gas stop valve.
2. By Long Pressing Switch button (SW1 )on PCB for 5 sec then unit will go on
pump down operation & LED continuous fast blinking on PCB (A2P) .
3.Close the liquid stop valve with a hexagonal wrench.
4.After 2 to 3 minutes, close the gas stop valve and Turn off the main power
supply this will automatically deactivate the Pump Down operation.
Pump down operation is allowed on below 2 conditions:-
(1 )The outdoor unit is not abnormal and not in the 3-minute standby mode.
(2)The outdoor unit is not operating.
Hexagonal
wrench
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When installing and relocating, be sure to install the earth leakage breaker to protect
from the electric shock disaster and fire due to leakage of electricity. For installing the
earth leakage breaker, request to the qualified electrician.