Lennox MHA Series Installation Instructions

15
IMPORTANT
This unit must be properly grounded and protected by a circuit breaker. The ground wire for the unit must not be
connected to a gas or water pipe, a lightning conductor or a telephone ground wire.
Do not connect power wires to the outdoor unit until all other wiring and piping connections have been completed.
Do not install the unit near a lighting appliance that includes a ballast. The ballast may affect remote control operation.
Table 9. Single Zone Installation Wiring Requirements
Systems and Terminal
Designations
System Capacity System Voltage
Number of
Conductors
Wire Type
Wire Gauge /
Minimum Circuit
Ampacity
Max Fuse
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
09K 115VAC 4 16AWG / 16A
20A
Outdoor to Main Power
L, N and GND
09K 115VAC 3 16AWG / 16A
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
12K 115VAC 4
Stranded and
unshielded
16AWG / 15A
20A
Outdoor to Main Power
L, N and GND
12K 115VAC 3 16AWG / 15A
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
09K 208/230VAC 4 16AWG / 10A
15A
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
09K 208/230VAC 4 16AWG / 10A
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
12K 208/230VAC 4 16AWG / 15A
15A
Outdoor to Main Power
L1, L2 and GND
12K 208/230VAC 3 16AWG / 15A
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
18K 208/230VAC 4 16AWG / 15A
20A
Outdoor to Main Power
L1, L2 and GND
18K 208/230VAC 3 16AWG / 15A
Indoor to Outdoor Wiring
(Communication/Power)
1, 2, 3 and GND
24K 208/230VAC 4 16AWG / 20A
25A
Outdoor to Main Power
L1, L2 and GND
24K 208/230VAC 3 16AWG / 20A
MCA = Minimum Circuit Amps

Lennox MHA Series Specifications

General

Brand	Lennox
Model	MHA Series
Category	Air Conditioner
Language	English