6. SYSTEM DESIGN
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 nsucient cooing and heating
he rerigerant in iuid pipe wi ush erigerant ow noise generate at indoor unit
he rerigerant oi wi not return nsucient rerigerant oi resuting in copressor daage
If the height difference between indoor unit is larger than the allowable value:
he rerigerant ow baance wi be poor nsucient cooing and heating poor baance
Refrigerant oil will collect in the piping or non-operating indoor units
nsucient rerigerant oi resuting in copressor daage
Pipe length:
If the pipe length is longer than prescribed:
he pressure oss wi be arger nsucient cooing and heating
oo uch rerigerant wi be charged iuid bacs up resuting in copressor daage
he rerigerant oi wi not return nsucient rerigerant oi resuting in copressor daage
Pipe size:
If the pipe size is larger than designated size:
he rerigerant ow eocit wi drop. erigerant oi wi not return to the outdoor unit.
nsucient rerigerant oi resuting in copressor daage
he rerigerant in iuid pipe wi ush easi nsucient cooing and heating
If the pipe size is smaller than designated size:
he rerigerant circuation oue wi drop nsucient cooing and heating
he pressure oss wi be arger nsucient cooing and heating
Indoor unit connected capacity:
If the indoor unit connected capacity is larger than the system capable capacity:
nsucient sste perorance nsucient cooing and heating
hen heating rerigerant wi coect in nonoperating indoor units resuting in an insucient
rerigerant circuation oue nsucient cooing and heating
he rerigerant oi wi not return opressor daage
If the indoor unit connected capacity is too small compared to the system capacity:
he iuid return wi be too great opressor daage
The refrigerant will concentrate in the operating unit
ontinuous operation wi becoe dicut due to triggering o the protection in response
to the pressure highrise etc. and noise wi be generated b the rerigerant ow when
heating
- (06 - 14) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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