Pipe Length - Fujitsu AUYG07LVLA Design & Technical Manual

CAUTION
Keep the "piping limitation" for correct operation.
Allowable height difference:
If the height difference between the indoor unit and outdoor unit is larger than the allowable value:
he pressure oss wi be arger
he re rigerant in i uid pipe wi
he re rigerant oi wi not return
If the height difference between indoor unit is larger than the allowable value:
he re rigerant ow ba ance wi be poor
Refrigerant oil will collect in the piping or non-operating indoor units

Pipe length:

If the pipe length is longer than prescribed:
he pressure oss wi be arger
oo uch re rigerant wi be charged
he re rigerant oi wi not return
Pipe size:
If the pipe size is larger than designated size:
he re rigerant ow e ocit wi drop. e rigerant oi wi not return to the outdoor unit.
he re rigerant in i uid pipe wi
If the pipe size is smaller than designated size:
he re rigerant circu ation o u e wi drop
he pressure oss wi be arger
Indoor unit connected capacity:
If the indoor unit connected capacity is larger than the system capable capacity:
nsu ficient s ste
hen heating re rigerant wi co ect in non operating indoor units resu ting in an insu ficient
re rigerant circu ation o u e
he re rigerant oi wi not return
If the indoor unit connected capacity is too small compared to the system capacity:
he i uid return wi be too great
The refrigerant will concentrate in the operating unit
ontinuous operation wi beco e di ficu t due to triggering o the protection in response
to the pressure high rise etc. and noise wi be generated b the re rigerant ow when
heating
nsu ficient coo ing and heating
ush
nsu ficient re rigerant oi resu ting in co pressor da age
nsu ficient re rigerant oi resu ting in co pressor da age
nsu ficient coo ing and heating
nsu ficient re rigerant oi resu ting in co pressor da age
nsu ficient re rigerant oi resu ting in co pressor da age
ush easi
nsu ficient coo ing and heating
per or ance nsu ficient coo ing and heating
nsu ficient coo ing and heating
o pressor da age
o pressor da age
- (06 - 14) -
e rigerant ow noise generate at indoor unit
nsu ficient coo ing and heating poor ba ance
i uid bac s up resu ting in co pressor da age
nsu ficient coo ing and heating
nsu ficient coo ing and heating
6. SYSTEM DESIGN