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SYSTEM REQUIREMENTS
REFRIGERANT CHARGE
INDOOR UNIT ELECTRICAL REQUIREMENTS
PIPE SIZE in (mm)
Notes: Insulate both refrigerant lines, separately.
Communication Cable: Recommended cable - 18/2 AWG stranded bare copper conductors
300V unshielded wire
Note: Use shielded cable if installation is in close proximity of RF and EMI
transmitting devices.
Unit Size
(BtuH)
18,000 1/4 (6) 1/2 (12) 10 (3) 25(7.5)
164 (50)
49 (15)
24,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5)
164 (50
)
49 (15)
30,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5)
164 (50)
49 (15)
36,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5)
164 (50
49 (15)
42,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5)
164 (50)
98 (30)
48,000 3/8 (10) 5/8 (15) 10 (3) 25(7.5)
230 (70)
98 (30)
Min Line
Max. Pre-Charge
Max Line
Max Elevation
Length
Line Length
Length
(ID over OD)
Liquid Suction/Gas
Line Line
Unit Size Refrigerant Factory System Additional
(BtuH) Type Charge oz (kg)* Charge oz/ft (g/m)
18,000 R410A 49.4 (1.4) 0.3 (30)
24,000 R410A 78.4 (2.2) 0.6 (60)
30,000 R410A 84.6 (2.4) 0.6 (60)
36,000 R410A 123.2 (3.6) 0.6 (60)
42,000 R410A 131.2 (3.8) 0.6 (60)
48,000 R410A 141.8 (4.1) 0.6 (60)
Unit Size
Voltage
Min Circuit Max Overcurrent Main Power
(BtuH) Amps (MCA) Protection (MOCP) Wire Size (AWG)
18,000 208/230v - 1ph 60hz 1.0 15 14
24,000 208/230v - 1ph 60hz 2.0 15 14
30,000 208/230v - 1ph 60hz 2.0 15 14
36,000 208/230v - 1ph 60hz 3.0 15 14
42,000 208/230v - 1ph 60hz 3.0 15 14
48,000 208/230v - 1ph 60hz 5.0 15 14
OUTDOOR UNIT ELECTRICAL REQUIREMENTS
Unit Size
Voltage
Min Circuit Max Overcurrent Main Power
(BtuH) Amps (MCA) Protection (MOCP) Wire Size (AWG)
18,000 208/230v - 1ph 60hz
15.9
25 10
24,000 208/230v - 1ph 60hz
23.4
40 10
30,000 208/230v - 1ph 60hz
23.4
40 10
36,000 208/230v - 1ph 60hz
27.7
45 8
42,000 208/230v - 1ph 60hz
29.7
50 8
48,000 208/230v - 1ph 60hz
36.5
70 6
*Precharge amount for up to 25-ft of refrigerant pipe.
REFRIGERANT LINE LENGTHS ft (m)
4
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