9
OCH699
6
REFRIGERANT SYSTEM DIAGRAM
Unit: Inch (mm)
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
(with strainer)
Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating
Refrigerant pipe ø1/4 (ø6.35)
(with heat insulator)
R.V. coil
heating ON
cooling OFF
Strainer
#100
LEV
Ambient
temperature
thermistor
RT65
Muffler
Capillary tube
O.D. 0.118 ×
I.D. 0.079 × 9-7/16
(ø3.0 × ø2.0 × 240)
(KA09)
Outdoor heat
exchanger
temperature
thermistor
RT68
Capillary tube
O.D. 0.118 ×
I.D. 0.079 × 8-9/32
(ø3.0 × ø2.0 × 210)
Service
port
Service
port
Refrigerant pipe ø3/8 (ø9.52)
(KA09/12)
(with heat insulator)
ø1/2 (ø12.7)
(KA15)
Stop valve
(with service port)
Capillary tube
O.D. 0.157 ×
I.D. 0.094 × 9-7/16
(ø4.0 × ø2.4 × 240)
(KA12/15
)
Muffler
SUZ-KA09NA(H)2.MX
SUZ-KA12NA(H)2.MX
SUZ-KA15NA(H)2.MX
Max. Length
A
Max. Height
difference
B
Indoor
unit
Outdoor unit
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
Refrigerant piping: ft
Piping size O.D: in
Max. Length
A
Max. Height difference
B
Gas
Liquid
SUZ-KA
09/12/15NA(H)2
65 40
3/8
(KA09/12)
1/2
(KA15)
1/4
ADDITIONAL REFRIGERANT CHARGE (R410A: oz)
Refrigerant piping exceeding 25 ft requires additional refrigerant charge according to the calculation.
Model
Outdoor unit
precharged
Refrigerant piping length (one way): ft
25
30
40
50
60
65
SUZ-KA09NA(H)2
2 lb 5 oz
0
1.08
2.16
3.24
4.32
5.4
SUZ-KA12NA(H)2
2 lb 9 oz
SUZ-KA15NA(H)2
Calculation: X oz = 1.08/5 oz / ft × (Refrigerant piping length (ft) - 25)
