Automated Logic RC642 User Manual

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Typical layout with analog heating and cooling:
T
AI - Zone temp
AI - Zone setpoint adjust
BI - Zone override
TT
BI - Freezestat
(optional)
AI - Discharge air temp
(optional)
BI - Smoke detector
(optional)
M
CT
BO - Fan low speed
BO - Fan high speed
(optional)
BI - Fan status
(optional)
AO - Cooling valve
AO - Heating valve
CHWR CHWS
HWS HWR
HW
CHW
Typical layout with staged heating and cooling:
T
AI - Zone temp
AI - Zone setpoint adjust
BI - Zone override
RA
DA
T
BI - Freezestat
(optional)
DX
BO - Cooling stage 1
BO - Cooling stage 2
Elec
BO - Heating stage 1
BO - Heating stage 2
M
CT
BI - Fan status
(optional)
BO - Fan low speed
SF
T
AI - Discharge air temp
(optional)
BI - Smoke detector
(optional)
BO - Fan high speed
(optional)
#7: Fan coil unit - 2-speed fan, modulated or 2-stage cooling and heating
Control schematics

Automated Logic RC642 Specifications

General

Model	RC642
Category	Controller
Input Voltage	24 VAC
Number of Inputs	6
Number of Outputs	4
Communication Protocol Detail	BACnet MS/TP
Communication Protocol	BACnet
Input Type	Universal Inputs (Binary or Analog)
Operating Temperature	32°F to 140°F (0°C to 60°C)