Automated Logic RC642 User Manual

67
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)
Fan status X UI-4 Optional - Dry contact
NOTE
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
Heating stage 1 X DO-4 (W1) Optional – Use this output OR
Fan speed 1
hot water valve
X DO-3 (G) Relay output
Fan speed 2 X DO-6 Relay output
Fan speed 3 X DO-5 (W2) 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

Automated Logic RC642 Specifications

General

Brand	Automated Logic
Model	RC642
Category	Controller
Language	English