To Charge Refrigerant - Daikin RYYQ8T7Y1B Installer And User Reference Manual

6 Installation
<< Continuation of previous page
("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
6.7.5

To charge refrigerant

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
refrigerant amount" on page 28.
2 The first 10 kg of additional refrigerant can be pre-charged
without outdoor unit operation.
If
The additional refrigerant amount
is smaller than 10 kg
The additional refrigerant charge
is larger than 10 kg
Installer and user reference guide
32
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
"6.7.3 To determine the additional
Then
Perform steps 3~4.
Perform steps 3~6.
("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.
3 Pre-charging can be done without compressor operation, by
connecting the refrigerant bottle to the service ports of the liquid
and equalising stop valves (open valve B). Make sure that valve
A and all outdoor unit stop valves are closed.
NOTICE
During pre-charging, the refrigerant is charged through the
liquid line. Close valve A and disconnect the manifold from
the gas line. The equalising line is ONLY charged to break
the vacuum. Charge it to maximally 0.05 MPa (0.5 bar),
then close valve C and disconnect its connection to the
manifold. Continue pre-charging through the liquid line
only.
Cooling charging
OR
During grey conditions
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV system air conditioner
4P370475-1C – 2016.11