KMC Controls BAC-4000 series User Manual

Roof Top Unit—Two-stage DX cooling, hot water heating with
economizer
This application applies to models BAC-4003CW0002, BAC-4023CW0002,
BAC-4203CW0002, and BAC-4223CW0002.
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.
Connect staged cooling and fan outputs to 24 volt AC pilot duty inputs.
For single stage cooling, do not connect Y2.
additional details on connecting sensors, see Connecting inputs on page
20.
For additional details 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 6–15 Materials list
Section 6: Application drawings KMC Controls, Inc.
106 Revision G

KMC Controls BAC-4000 series Specifications

General

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