Carrier CDII-184R1-0CTR4 - Page 23

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Indoor & Outdoor Units are connected by Discharge & Liquid Line Piping. Special Attention is
required to insulate DISCHARGE LINE whose temperature remain 80-100 deg. It is mandatory
to cover the piping with sheet metal duct frame or with some material which can withstand
temperature up to 200degC.
Do not run any Wiring with Discharge or Liquid line. Discharge line temperature can damage
main wiring.
Refrigerant factory charge, additional refrigerant charge amount in field, Oil charge amount from
factory, pipe sizes and maximum allowable pipe length are as mentioned below.
REFRIGERENT CHARGE (R-410A)/Each CDU
Model
Liquid
(inch)
Suctio
n
(inch)
Standard
pipe
length
metre
Standard
charge
Amount
(gram)
(Factory)
Oil
charge amount
(ml)
FV 50S
(Factory)
Maximum
Pipe
Length
(metre)
Maximum
Pipe
Vertical
Length
(metre)
Additional
Refrigerant
Charge > 7.5mts
(grams / metre)
(Field)
7 HP
3/8”
3/4”
7.5
4100
400
50
15
49
11 HP
1/2”
1-1/8”
7.5
5900
600
50
15
75
14 HP
5/8”
1-1/8”
7.5
6400
0
50
15
121
22 HP
1/2”
1-1/8”
7.5
5900
600
50
15
75
Copper Tube
(Outer Diameter)
(inch)
Minimum
Pipe
thickness
(mm)
Thermal Insulation
(Internal Diameter)
(inch) (mm)
Model
Liquid
Suction
Liquid &
Suction
Liquid
Thickness
(min)
Suction
Thickness
(min)
7 HP
3/8”
3/4”
1.00
3/8”
0.40” (10mm)
3/4”
0.80” (20mm)
11 HP
1/2”
1-1/8”
1.00
1/2”
0.40” (10mm)
1-1/8”
0.80” (20mm)
14 HP
5/8”
1-1/8”
1.00
5/8”
0.40” (10mm)
1-1/8”
0.80” (20mm)
22 HP
1/2”
1-1/8”
1.00
1/2”
0.40” (10mm)
1-1/8”
0.80” (20mm)