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Pioneer Gold 3.00 Controller Technical Guide
SEQUENCE OF OPERATION
Space/Room Sensor Controlled Supply Fan
Space/Room Sensor Controlled
Random Start Delay
The controller will enter a random start delay in these situations:
• The unit powers up.
• Recovery from emergency shutdown alarm.
• Recovery from high voltage alarm.
• Recovery from low voltage alarm.
The Random Start Delay will be between three and 60 seconds.
The fan, compressor, and reversing valve will not be operational
during this time.
Occupancy/Supply Fan Operation
Building Occupancy Status
Occupied Mode Operation Options:
• Internal Schedule
• Network Occupancy Point (BACnet
®
)
Occupied Mode Operation
The controller will use Occupied Setpoints for Heating, Cooling,
Unoccupied Mode Operation
While in Unoccupied Mode, the controller will use unoccupied
setpoints for Heating and Cooling Modes and the Occupied
Supply Fan
Any time the Supply Fan is requested to start, a 30 second
the Supply Fan will be energized. In Auto Mode or when
transitioning to Unoccupied Mode, the Supply Fan is held
on for 15 seconds after the last stage of Cooling, Heating, or
• Auto: Default. Cycles on with Cooling, Heating, and
• On: To run continuously.
Off: Unit will not run with Cooling, Heating, and
• Occupied On / Unoccupied Auto: During Occupied
Mode, the fan will be on. During Unoccupied Mode,
the fan will operate as in Auto.
Ventilation Mode
Ventilation Mode occurs during the Occupied or Unoccupied
operation and there is no demand for cooling, heating, or
Supply Fan Motors
Single Speed Permanent-Split Capacitor (PSC) or
Electronically Commutated Motor (ECM)
With a single speed PSC or ECM, the Supply Fan will be enabled
and will always run at full speed when called for.
Two-Speed Electronically Commutated Motor
(ECM)
With a two-speed ECM, the Supply Fan will have two speed
operations—low speed and high speed.
The Supply Fan speeds will correspond to the below listed
operating functions.
• Ventilation Mode: Low Speed
• Single Stage Compressor “Y1”: High Speed
• Two Stage Compressor “Y1”: Low Speed
• Two Stage Compressor “Y2”: High Speed
• Supplemental Heating: High Speed
• Dehumidication: Low Speed
• Waterside Economizer: High Speed
Supply Fan Control
Constant Air Volume (CAV)
The Supply Fan will always run at a constant speed. If two-speed
ECM is selected, the Supply Fan will operate according to low
NOTE: CFM settings are preprogrammed on the fan.
Supply Fan Min and Max Setpoints are used to
set fan speed.
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