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71
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
Heating stage 1
chilled water valve
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
Fan speed 1
X
DO-3 (G)
Relay output
Fan speed 2
X
DO-6
Relay output
Fan speed 3
X
DO-2 (Y2) 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