Daikin VRV IV RXYQ TYDN Series Engineering Data page 37

Installation Manual
Heating charging
( 22 startup control)
( 23 waiting for stable heating)
23
Push BS2 within 5 minutes.
Open valve A.
Display show 23 and low pressure
value with an interval of 1 second.
Add additional refrigerant amount
P (lbs.(kg)).
Close valve A.
Push BS3 to stop operation.
26 will appear.
Push BS2.
T
check will be performed.
A
0X will appear. (X is variable)
Push BS1.
Fill in the amount on the additional
refrigerant charge label.
Go to test run (see 15.4. Test opera-
may cause the refrigerant composition to change, preventing normal
operation.
Before charging, check whether the refrigerant cylinder is equipped
with a siphon tube or not.
Charge the liquid
refrigerant with the
cylinder in upright
position.
the system.
3P362438-1B English
38
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Following codes appear: E-2 (indoor
temperature out of range) and E-3
(outdoor temperature out of range).
Push BS1 to leave program.
Fill in the amount on the additional
refrigerant charge label.
Go to test run (see 15.4. Test opera-
Charge the liquid
refrigerant with the
cylinder in upside-
down position.
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Cooling charging
( 02 startup control)
( 03 waiting for stable cooling)
03
Push BS2 within 5 minutes.
Open valve A.
Display show 03 and low pressure
value with an interval of 1 second.
Refrigerant will be charged automati-
cally.
PE
P9
OR
P(lbs.(kg)) was added during auto-
charge
R=Q+P
Close valve A.
Push BS1 to leave program.
Fill in the amount on the additional
refrigerant charge label.
Go to test run (see 15.4. Test opera-
If following codes appear: E-2 (indoor
temperature out of range) and E-3
(outdoor temperature out of range).
In this case, perform automatic charg-
ing procedure again.
NOTE
cidents, so always make sure that the appropriate refrigerant (R410A)
is charged. Refrigerant containers must be opened slowly.
CAUTION
When charging a system, charging over the permissible 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.
EDUS341411-N
During gray
conditions
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28
3P362438-1B
Installation of Outdoor Units