Lennox MHB Series User Manual

14
Terminal block
Terminal Block
Cover
Screw
Cable Clamp
The wiring diagram is located
on the inside of the indoor unit’s
terminal block cover.
Figure 31. Indoor Unit Terminal Block
208/230V Outdoor Unit
Terminal Block
From Power
Supply
Terminal Block
208/230V Indoor Unit
Outdoor Unit Indoor Unit
3
2
L1
L2
1
Y/G
1
3
Y/G
Y/G
115VAC Outdoor Unit
Terminal Block
From Power
Supply
Terminal Block
115VAC Indoor Unit
Outdoor Unit Indoor Unit
3
2
L
N
1
Y/G
1
3
Y/G
Y/G
*
*
18 and 24K
unit has
five terminal
sets.
Figure 32. Single Zone Wiring
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 8. Single Zone Installation Electrical
Outdoor Unit Model Voltage/Phase, Hz MCA Max Fuse
MHB009S4S-1L
115 / 1 / 60
20 30
MHB012S4S-1L 18.5 25
MHB009S4S-1P
208-230 / 1 / 60
12 15
MHB012S4S-1P 15 15
MHB018S4S-1P 15 20
MHB024S4S-1P 19 30
MCA = Minimum Circuit Amps

Lennox MHB Series Specifications

General

Brand	Lennox
Model	MHB Series
Category	Air Conditioner
Language	English