To Charge Refrigerant - Daikin VRV IV+ RYYQ14U7Y1B Series Installer And User Manual

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("t22" startup control)
("t23" waiting for stable heating)
"t23" is flashing
• Push BS2 within 5 minutes
• Open valve A
Display show "t23" and low pressure value with an interval of 1 second.
• Add additional refrigerant amount P (kg)
• Close valve A
• Push BS3 to stop operation
• Ending code "t26" will appear
• Push BS2
• T check will be performed
A
• "t0X" will appear
• Push BS1
• Charging is finished
• Fill in the amount on the
additional refrigerant charge
label
• Input the additional refrigerant
amount via setting [2-14]
• Go to test run

18.4.5 To charge refrigerant

RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1B – 2020.10
Heating charging
Following codes appear:
"e-2" (indoor temperature out of
range) and
"e-3" (outdoor temperature out of
range)
• Push BS1 to leave program
• Charging is finished
• Fill in the amount on the
additional refrigerant charge
label
• Input the additional refrigerant
amount via setting [2-14]
• Go to test run
Follow the steps as described below and take into account whether you want to
use the automatic charge function or not.
Pre-charging refrigerant
1 Calculate the additional amount of refrigerant to be added using the formula
mentioned in
2 The first 10 kg of additional refrigerant can be pre-charged without outdoor
unit operation.
("t02" startup control)
("t03" waiting for stable cooling)
"t03" is flashing
• Push BS2 within 5 minutes
• Open valve A
Display show "t03" and low pressure value with an interval of 1 second.
Refrigerant will be charged automatically.
"pe"=charging nearly finished
"p9"=charging finished
P (kg) was added during autocharge.
R=Q+P
• Close valve A
• Push BS1 to leave program
• Charging is finished
• Fill in the amount on the additional refrigerant charge label
• Input the additional refrigerant amount via setting [2-14]
• Go to test run
If following codes appear:
"e-2" (indoor temperature out of range) and
"e-3" (outdoor temperature out of range)
In this case, perform automatic charging procedure again.
"To determine the additional refrigerant
18 Piping installation
|
Cooling charging
OR
During grey conditions
4
amount" [ 98].
Installer and user reference guide
103