Installation Guide

5
SYSTEM REQUIREMENTS
REFRIGERANT CHARGE
ELECTRICAL REQUIREMENTS
PIPE SIZE in (mm)
Notes: 1) System must be on a single dedicated circuit.
2) Power for indoor unit originates from outdoor unit.
3) Use table above for sizing of wiring and circuit breakers.
4) Follow all local building codes and NEC (National Electrical Code) regulations.
Interconnecting Cable: Recommended cable-14/4 A WG stranded bare copper conductors THHN 600V unshielded wire
Note: Use shielded cable if installation is in close proximity of RF and EMI transmitting devices.
Condensate Drain Size: 5/8-in OD 7/16-in ID
Unit Size (ButH) Liquid Line Suction/Gas Line
9,000 1/4 (6) 1/2 (12)
12,000 1/4 (6) 1/2 (12)
18,000 1/4 (6) 5/8 (15)
24,000 1/4 (6) 5/8 (15)
Unit Size (ButH) Min Line Length Max Line Length Max Elevation
9,000 10 (3) 25 (7.5) 49 (15) 33 (10)
12,000 10 (3) 25 (7.5) 98 (30) 49 (15)
18,000 10 (3) 25 (7.5) 131 (40) 66 (20)
24,000 10 (3) 25 (7.5) 164 (50) 98 (30)
Unit Size (ButH) Refrigerant Type Factory System Charge Additional Charge
oz (kg) oz/ft (g/m)
9,000 R410A 45.9 (1.3) 0.21 (20)
12,000 R410A 49.4 (1.4) 0.21 (20)
18,000 R410A 74.1 (2.1) 0.54 (50)
24,000 R410A 81.1 (2.3) 0.54 (50)
Unit Size
Voltage
Min Circuit Max Overcurrent Main Power
(ButH) Amps (MCA) Protection (MOP) Wire Size (AWG)*
9,000 208/230v - 1ph 60hz 9 15 12-2
12,000 208/230v - 1ph 60hz 9 15 12-2
18,000 208/230v - 1ph 60hz 22 30 10-2
24,000 208/230v - 1ph 60hz 22 35 10-2
*Main power wire from electrical panel to outdoor unit.
REFRIGERANT LINE LENGTHS ft (m)
Pre-Charge
Line Length