Automated Logic RC642D

44
Hardware Points
Point Name
AI
BI
BO
AO
I/O #
Comments
Zone temp X Internal
Zone setpoint
adjust
X Internal
Zone override X Internal
Smoke detector X UI-1 Optional – Requires sensor (dry
contact)
Discharge temp X UI-2 Optional – Requires sensor
(Type II thermistor)
Freezestat X UI-3 Optional – Requires sensor (dry
contact)
Supply fan status X UI-4 Optional - Short input to ground
if not used.
Cooling stage 1 X DO-1 (Y1) Optional – Use this output OR
Cooling stage 2
chilled water valve
X DO-2 (Y2) Optional – Use this output if
2-stage cooling is present
Fan start/stop X DO-3 (G) Relay output
Heating stage 1 X DO-4 (W1) Optional – Use this output OR
Heating stage 2
hot water valve
X DO-5 (W2) Optional – Use this output if
2-stage heating is present
Outside air damper X DO-6 Relay output
Chilled water valve X AO-1 Optional – 0–10 Vdc
Use this output
OR
Hot water valve
staged
cooling
X AO-2 Optional – 0–10 Vdc
Use this output
OR staged
heating
Run conditions - scheduled
User-defined schedules determine when the unit runs in:
• Occupied Mode
The unit maintains a 74°F (23.5°C) adjustable cooling setpoint and a 70°F (21°C)
adjustable heating setpoint.
• Unoccupied Mode (night setback)
The unit maintains an 85°F (29.5°C) adjustable cooling setpoint and a 55°F (13°C)
adjustable heating setpoint.
Point list
Sequence of
operation