Timer Off Operation; Modify Timer On/Off Settings; Connection To Centralized Controller; Set Indoor Unit Address For Centralized Control (Used With Vrf Only) - Lennox MCA Series Service Manual

hours, then the increment becomes one hour.
6.5.7.

Timer OFF Operation

1. Press the Timer OFF button. The Timer OFF icon, the
last auto-off time, and "h" will display.
2. Press the Timer OFF button again to set the amount of
time before the indoor unit stops operation. Each press
will increase the time in half hour increments until 10
hours, then the increment becomes 1 hour.
6.5.8.

Modify Timer ON/OFF settings

1. Press either the Timer ON button or the Timer OFF
button to modify that setting.
2. Use the up arrow and down arrow buttons to change the
timed operation intervals.
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.
0 0
ON
1 2
8 8
0 ~ F
0 ~ 15
LEFT - DOWN LEFT - DOWN
RIGHT - DOWN RIGHT - UP
Figure 13. Dip Switches
Figure 14. Dip Switch Settings
3. Set the timer to 0.0 to turn off timed operation.

7. Connection to Centralized Controller

7.1. 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
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
ON
1 2
8
0 ~ F 0 ~ F
16 ~ 31 32 ~ 47
LEFT - UP
RIGHT - DOWN
Dip switch 1 is UP and dip switch 2 is DOWN, dial points to 0.
13
0
ON
1 2
8
0 ~ F
48 ~ 63
LEFT - UP
RIGHT - UP
Indoor Unit Address is 32
ON
1 2