Method For Adding Refrigerant - Daikin RYYQ8T7Y1B Installation And Operation Manual

14.4. Method for adding refrigerant

14.4.1. Flow chart
Refrigerant overcharge happened
• Recover refrigerant to reach
R=Q
• Go to step 4a
B
Step 4b+5
Manual refrigerant charging
method (in cooling operation)
Step 6B
Activate field setting [2-20]=1
Unit will start manual refrigerant
charging operation.
Step 6B
• Open valve A
• Charge remaining amount of
refrigerant P (kg)
R=Q+P
Step 6B
• Close valve A
• Push BS3 to stop manual
charging
• Charging is finished
• Fill in the amount on the
additional refrigerant charge
label
• Go to test run (see "15.5. Test
operation" on page 44)
Installation and operation manual
33
Step 1
• Calculate additional refrigerant
charge amount: R (kg) (see
"14.3. Calculating the
additional refrigerant charge"
on page 32)
Step 2+3
R<Q
• Open valve C to field piping via
liquid stop valve
• Execute pre-charging amount:
Q (kg)
• Close valve C if no additional
refrigerant can be charged
You want to execute automatic
refrigerant charge?
NO
Continued on next page >>
R=Q
R>Q
YES
Step 4a
• Close valve C
• Charging is finished
• Fill in the amount on the
additional refrigerant charge
label
• Go to test run (see "15.5. Test
operation" on page 44)
A
Step 4b+5
Automatic refrigerant charging
method
Step 6A
• Push 1x BS2: "888"
• Push BS2 for more than 5
seconds "t01" pressure
equalisation
Depending on ambient conditions,
the unit will decide to perform
autocharge operation in heating
or cooling mode.
Continued on next page >>
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV System Air Conditioner
4P329765-1 – 2012.09