Lennox MHA Series Service Manual

12
0
8
4
1
2
3
5
6
7
C
9
A
B
D
E
F
1
2
ON
0
8
4
1
2
3
5
6
7
C
9
A
B
D
E
F
1
2
ON
0
8
4
1
2
3
5
6
7
C
9
A
B
D
E
F
1
2
ON
0
8
4
1
2
3
5
6
7
C
9
A
B
D
E
F
1
2
ON
S1+S2
FOR SETTING ADDRESS
RANGE
ADDRESS
FACTORY SETTING
0 ~ F 0 ~ F 0 ~ F 0 ~ F
0 ~ 15 16 ~ 31 32 ~ 47 48 ~ 63
DIP SWITCH
HANDLES
LEFT - DOWN
RIGHT - DOWN
LEFT - DOWN
RIGHT - UP
LEFT - UP
RIGHT - DOWN
LEFT - UP
RIGHT - UP
Figure 11. Dip Switches
IndoorUnitAddressis0
BothdipswitchhandlesareDOWN,dialpointsto0.
IndoorUnitAddressis32
Dipswitch1isUPanddipswitch2isDOWN,dialpointsto0.
Switchlocationandcolorvariesforeachindoorunit.Twoexamplesareshownabove.
Figure 12. Dip Switch Settings
6.2. Indoor Unit Connection Points for
Centralized Controller
Mini-split indoor units can be connected to a centralized
controller(e.g.LennoxVRFManager-LVMorTraneTracer)
oraBACnetorLonWorksgatewayusingtheXYEterminals
ontheindoorunitmainboard.
To CCM
Comm.Bus
X Y
(
E
)
Y/G
Figure 13. Indoor Unit Connection Points
(Typical Wiring Diagram)
Figure 14. Typical Indoor Unit Connection Points
6.3. Dry Mode Operation - Indoor Units
6.3.1. Procedure
1. PresstheMODEbuttontoselectDRY mode.
2. Press the UP/ DOWN button to select the desired
temperature.Thetemperaturesettingrangeisfrom62°F
to86°Finonedegreeincrements.
NOTE: The blower is preset at a low speed and cannot be
changed therefore it will get cold and most likely
will over shoot the temperature setting by 6-10
degrees depending on the room size or other
various factors. Also the Follow Me mode does

Lennox MHA Series Specifications

General

Brand	Lennox
Model	MHA Series
Category	Air Conditioner
Language	English