KMC Controls BAC-4000 series User Manual

Roof Top Unit—Two-stage gas heat and two-stage DX cooling with
economizer
This application applies to models BAC-4223CW0002, BAC-4023CW0002,
BAC-4203CW0002, and BAC-4003CW0002
Fan status switch (FST) is optional. Typically it is used only when the
AppStat is connected to a network.
Discharge air temperature (DAT) and outdoor air temperature (OAT)
sensors are required for economizer operation.
For dehumidification, the AppStat must include a humidity sensor.
The remote temperature sensor (RS) is optional.
For single stage heating, do not connect W2.
For single stage cooling, do not connect Y2.
Connect outputs to 24 volt AC pilot duty inputs.
For additional details on connecting sensors, see Connecting inputs on
page 20.
For additional detail on connecting the fan and valves, see Connecting
outputs on page 24.
KMC Part
No.
Description Function
CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch
STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature
STE-1451 Outdoor air temperature sensor, 10 kΩ Type III Outdoor air temperature
STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature
XEE-6111-040
XEE-6112-040
XEE-6311-075
Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer
Controls transformer
Table 6–12 Materials list
Section 6: Application drawings KMC Controls, Inc.
100 Revision G

KMC Controls BAC-4000 series Specifications

General

Brand	KMC Controls
Model	BAC-4000 series
Category	Controller
Language	English