Connection To Centralized Controller; Set Indoor Unit Address For Centralized Control (Used With Vrf Only); Indoor Unit Connection Points For Centralized Controller - Lennox MCB Series Service Manual

3. Connection to Centralized Controller

3.1. Set Indoor Unit Address for Centralized
Control (Used with VRF Only)
All indoor units connected to a centralized controller must
have a unique address. Use the S1 dip switch and the S2
FOR SETTING ADDRESS
S1+S2
RANGE
ADDRESS
DIP SWITCH
HANDLES
FACTORY SETTING
Indoor Unit Address is 0
Both dip switch handles are DOWN, dial points to 0.
Switch location and color varies for each indoor unit. Two examples are shown above.
3.2. 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.
Figure 6. Indoor Unit Connection Points
0
ON
1 2
8
0 ~ F
0 ~ 15
LEFT - DOWN
RIGHT - DOWN
Figure 4.
Figure 5.
(E)
X Y
Y/G
To CCM
Comm.Bus
dial switch to set the address for each indoor unit. The table
below shows how to set the unique addresses.
All indoor units are factory set to "0". To change the address
to "1", move the dial switch to the 1 position, do not adjust
the dip switches. To change the address to "35", move dip
switch 1 to the UP position and move the dial switch to the
3 position.
0 0
ON
1 2 8
8
0 ~ F
16 ~ 31 32 ~ 47
LEFT - DOWN LEFT - UP
RIGHT - UP RIGHT - DOWN
Dip Switches
Dip switch 1 is UP and dip switch 2 is DOWN, dial points to 0.
Dip Switch Settings
Figure 7. Typical Indoor Unit Connection Points
6
0
ON
1 2
8
0 ~ F 0 ~ F
48 ~ 63
LEFT - UP
RIGHT - UP
Indoor Unit Address is 32
ON
1 2