KMC Controls BAC-4000 series User Manual

Roof Top Unit
applications
This section covers applications for roof top units. For other applications see
Fan Coil Unit applications on page 78 and Heat Pump Unit applications on
page 108.
Roof Top Unit—Two-stage gas heat and two-stage DX cooling
This application applies to models BAC-4221CW0002, BAC-4021CW0002,
BAC-4201CW0002, and BAC-4001CW0002.
Fan status switch (FST) and discarge air temperature (DAT) and outdoor
air temperature (OAT) sensors are optional. They are typically used only
when the AppStat is connected to a network.
For dehumidification, the AppStat must include a humidity sensor.
The remote temperature sensor (RS) is optional.
For single stage heating, delete connection W2.
For single stage cooling, delete connection 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 6–11 Materials list
Section 6: Application drawings KMC Controls, Inc.
98 Revision G

KMC Controls BAC-4000 series Specifications

General

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