![Automated Logic RC642 Technical Instructions Download Page 47](http://html.mh-extra.com/html/automated-logic/rc642/rc642_technical-instructions_3021520047.webp)
43
Typical layout with analog heating and cooling:
T
AI - Zone temp
AI - Zone setpoint adjust
BI - Zone override
T
T
BI - Freezestat
(optional)
BO - Outside air damper
AI - Discharge air temp
(optional)
BI - Smoke detector
(optional)
M
CT
BO - Supply fan start/stop
BI - Supply fan status
(optional)
AO - Heating valve
AO - Cooling valve
CHWS CHWR
HWR HWS
SF
Starter
CHW
HW
S
N.C.
Typical layout with staged heating and cooling:
T
AI - Zone temp
AI - Zone setpoint adjust
BI - Zone override
OA
DA
DX
BO - Cooling stage 1
BO - Cooling stage 2
Elec
BO - Heating stage 1
BO - Heating stage 2
M
CT
BO - Supply fan start/stop
BI - Supply fan status
(optional)
SF
Starter
T
T
BI - Freezestat
(optional)
AI - Discharge air temp
(optional)
BI - Smoke detector
(optional)
BO - Outside air damper
S
N.C.
#1: 100% outside air unit
Control schematics