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Pioneer Gold 3.00 Controller Technical Guide
Thermostat Controlled
Random Start Delay
The controller will enter a random start delay in these situations:
1. The unit powers up
2. Recovery from emergency shutdown alarm
3. Recovery from high voltage alarm
4. Recovery from low voltage alarm
5. Night setback mode is disabled
The Random Start Delay will be between three and 60 seconds.
The fan, compressor, and reversing valve will not be operational
during this time. The Random Start Delay will be ignored if the
unit is in test mode.
Occupancy/Supply Fan Operation
Building Occupancy Status
Normal/Occupied Mode
The controller will operate according to the thermostat inputs.
Night Setback Mode
Night Setback Mode is enabled upon receiving a 24 VAC or
24 VAC common input to the “NSB” terminal. While in Night
Setback Mode, the controller will ignore all normal thermostat
fan and compressor enable inputs on “G”, “Y1”, and “Y2”
terminals. Instead, the controller will use the “NSB TH” input
as the fan and compressor enabling signal, operating at full “Y2”
compressor operation.
The Night Setback Mode can be overridden with a 24 VAC input
to the Night Setback override terminal “NSB OVR”. Once the
override signal is received, Night Setback will be overridden for
two hours, even if the signal is removed. While Night Setback is
overridden, the controller will respond to the normal thermostat
signals.
Supply Fan Operation
The Supply Fan will enable upon receiving a 24VAC input on
the “G” terminal or upon a call for compressor operation, unless
an alarm prevents the fan from operating. Any time the Supply
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 (through the
“Fan” Relay Output terminal).
Two Speed Electronically Commutated Motor
(ECM)
With a two speed ECM, the Supply Fan will have two speed
operations: “low speed” and “high speed”. Relay output “Fan”
will correspond to “low speed” and “Fan2” will correspond to
“high speed”.
The Supply Fan speeds will correspond to the below listed
operating functions.
• Supply Fan “G” call only: 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
CFM Controlled Electronically Commutated Motor
(ECM)
With a CFM controlled ECM, the Supply Fan will modulate to
maintain a target CFM based on the operating functions through
a 16-pin connector. Fan Speed Settings for Cooling, Heating,
SEQUENCE OF OPERATION
Thermostat Controlled Random Start, Supply Fan
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