Kelvinator KSV25CRF, Installation Manual

Page: 7 / 28

7
Rooftop installation
Rooftop installation
If the outdoor unit is installed on a roof structure, be sure to level
the unit.
Ensure the roof structure and anchoring method are adequate for
the unit location.
If the outdoor unit is installed on roof structures or external walls,
this may result in excessive noise and vibration, and may also be
classed as non-serviceable installation.
Pipe Length Elevation and Additional Quantity of Gas
Model Number Discharge Pipe
Diameter
Suction Pipe
Diameter
Standard
Length (m)
Maximum
Length (m)
Maximum
Height (m)
Additional
Refrigerant (g/m)
KSV25HRF Ø6.35 mm (1/4”) Ø9.52 mm (3/8”) 7.5 15 10 16
KSV35HRF Ø6.35 mm (1/4”) Ø9.52 mm (3/8”) 7.5 20 10 16
KSV52HRF Ø6.35 mm (1/4”) Ø12.70 mm (1/2”) 7.5 25 10 16
KSV70HRF Ø6.35 mm (1/4”) Ø15.88mm (5/8”) 7.5 25 10 40
KSV80HRF Ø6.35 mm (1/4”) Ø15.88mm (5/8”) 7.5 30 10 40
KSV25CRF Ø6.35 mm (1/4”) Ø9.52 mm (3/8”) 7.5 15 10 12
KSV35CRF Ø6.35 mm (1/4”) Ø9.52 mm (3/8”) 7.5 20 10 12
KSV70CRF Ø6.35 mm (1/4”) Ø15.88 mm (5/8”) 7.5 25 10 12
WARNING
caution
• The outdoor unit is charged with the refrigerant for standard
pipe length of 7.5m.
• When the connecting pipe length is longer than the standard
length, additional refrigerant should be added into the unit
according to the above table through the service port on 3-way
service valve on the outdoor unit.
• PLEASE MAINTAIN THE SHORTEST DISTANCE (3 TO 5
METRES) AND SHORTEST MISALIGNMENT POSSIBLE
BETWEEN THE INDOOR AND OUTDOOR UNITS.
• The maximum allowance length and height is based
on reliability. Exceeding the maximum may cause poor
performance or malfunction.
• When the level difference between indoor and outdoor units
is greater than the maximum height of 10 metres, or when
the outdoor unit is installed above the indoor unit, an oil trap
should be installed every 5-7 metres.
maximum length
maximum length
oil trap
maximum height
maximum height
piping length under 7.5m
piping length 7.5m or more
A
A
B
B
indoor unit
indoor unit
outdoor unit
outdoor unit