BAC-7401 Heat Pump Controller
Revision E
13
SECTION 3
Operating the controller
This section provides a brief overview of the BAC-7401 and the
BAC-7401C Direct Digital Controllers. Review this material before
you attempt to install the controller.
Operation
Once configured, programmed and powered up, the controller requires very little
user intervention.
Controls and
Indicators
The following topics describe the controls and indicators found on the controller.
Additional information for automatic addressing functions are described in the
guide
MS/TP Automatic MAC Addressing Installation Instructions
that is available
from the KMC Controls web site.
Network disconnect switch
The network disconnect switch is located on the left side of the controller. Use this
switch to enable or disable the MS/TP network connection. When the switch is ON
the controller can communicate on the network; when it is OFF, the controller is
isolated from the network.
Alternately, you may remove the isolation bulbs to isolate the controller from the
network.
Illustration 3-1 Controls and indicators
T4 R
TN T3
T2 R
TN T1
1
Connected
Disconnected
Network
disconnect
switch
Isolation
bulbs
Power
jumper
Ready status LED
Com status LED
Restart button
