Lennox MCFA Service Manual

35
6.2. Wiring Guide
Table 2. Single Zone Mini-Split Wiring Guide
Systems System Capacity System Voltage
Number of
Conductors
Wire Type Wire Gauge
Indoor to Outdoor Wiring (Communication/
Power)
1, 2, 3 and GND
09K and 12K 115VAC 4 Stranded
16AWG*4 Stranded,
unshielded
Outdoor to Main Power
L, N and GND
09K and 12K 115VAC 3 Stranded
MCA: 15A
14AWG*3
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
09K and 12K 208/230 VAC 4 Stranded
16AWG*4 Stranded,
unshielded
Outdoor to Main Power
L1, L2 and GND
09K and 12K 208/230 VAC 3 Stranded
MCA: 9A
16AWG*3
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
18K 208/230 VAC 4 Stranded
16AWG*4 Stranded,
unshielded
Outdoor to Main Power
L1, L2 and GND
18K 208/230 VAC 3 Stranded
MCA: 18A
14AWG*3
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
24K 208/230 VAC 4 Stranded
16AWG*4 Stranded,
unshielded
Outdoor to Main Power
L1, L2 and GND
24K 208/230 VAC 3 Stranded
MCA: 20A
12AWG*3
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
30K 208/230 VAC 4 Stranded
16AWG*4 Stranded,
unshielded
Outdoor to Main Power
L1, L2 and GND
30K 208/230 VAC 3 Stranded
MCA: 20A
12AWG*3
Indoor to Outdoor Wiring
(Power only)
L1, L2 and GND
36K 208/230 VAC 3 Stranded
16AWG*3 Stranded,
unshielded
Indoor to Outdoor Wiring
(Communication only) (S1, S2 and GND)
36K 208/230 VAC 3 Stranded (shielded) 24AWG*3
Outdoor to Main Power
L1, L2 and GND
36K 208/230 VAC 3 Stranded
MCA: 30A
10AWG*3
Indoor to Outdoor Wiring
(Power only)
L1, L2 and GND
48K 208/230 VAC 3 Stranded
16AWG*3 Stranded,
unshielded
Indoor to Outdoor Wiring
(Communication only)
(S1, S2 and GND)
48K 208/230 VAC 3 Stranded (shielded) 24AWG*3
Outdoor to Main Power
L1, L2 and GND
48K 208/230 VAC 3 Stranded
MCA: 35A
8AWG*3

Lennox MCFA Specifications

General

Brand	Lennox
Model	MCFA
Category	Air Conditioner
Language	English