Lennox MPC User Manual

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8.2. 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 23. Typical Central Controller Connection
Point Example
Figure 24. Typical Central Controller Connection
Point Example 2
8.3. ON/OFF Devices
Mini-split indoor units can be connected to an external
device such as a re alarm system using two dry contacts
on the indoor unit main board. These dry contacts allow the
external device to turn the indoor unit on or off.
Dry contacts can be used for
alarm notice that oat switch
tripped etc.
Remote on-o
ports
Central
control
ports (VRF)
Figure 25. Indoor Unit Connection Points for
ON/OFF)
8.4. Alarm Devices
Mini-split indoor units can be connected to an alarm device
such as a light or buzzer using two dry contacts on the indoor
unit main board.
Figure 26. Alarm Device Connection Points (Typical)
8.5. Connecting Cables
The power cord connection should be selected according to
the following specications.
Table 4. Wire Gauge
Unit Gauge
1 drive 2 type (18K outdoor unit) 14
1 drive 3 type (27K outdoor unit). 14
1 drive 4 type (36K outdoor unit) 12
1 drive 5 type (48K outdoor unit) 10

Lennox MPC Specifications

General

Brand	Lennox
Model	MPC
Category	Air Conditioner
Language	English