Zone
Zone
Pioneer Gold 1.10 & 2.05 Controller Technical Guide
SEQUENCE OF OPERATIONS
1-23
Compressor Operation
Compressor(s) will only operate if the Supply Fan has been enabled
for a minimum of 5 seconds.
Cooling Mode is enabled when the Space Temperature rises above
the active Cooling Setpoint (default: 74°F) plus the deadband
(default: 1°F, range: 1-5°F). Cooling Mode is disabled when the
Space Temperature falls below the active Cooling Setpoint minus
the deadband.
Heating Mode is enabled when the Space Temperature falls below
the active Heating Setpoint (default: 70°F) minus the deadband
(default: 1°F, range: 1-5°F). Heating Mode is disabled when the
Space Temperature rises above the active Heating Setpoint plus
the deadband.
Compressor staging up and staging down are subject to the following
setpoints:
Compressor On Delay
(5 seconds, non-adjustable)
Compressor Minimum On Time
(default: 180 seconds; range: 120-255 seconds)
Compressor Minimum Off Time
(default: 120 seconds; range: 60-255 seconds)
Compressor Interstage On Delay
(default: 60 seconds; range: 30-255 seconds)
Compressor Interstage Off Delay
(default: 60 seconds; range: 30-255 seconds)
If the unit goes into an alarm, the minimum on time of the
compressor(s) will be ignored and the compressor(s) will be disabled.
On/Off Compressor (Scroll or Rotary)
In Cooling or Heating Mode, the compressor will be enabled. There
is no Supply Air Temperature Control.
Multiple Stage Compressors
Stage Up Sequence
In Cooling Mode, as the Supply Air Temperature rises above the
active Supply Air Temperature Cooling Setpoint (default: 55°F, range:
45-65°F) plus the deadband (2°F, non-adjustable), the compressor(s)
will stage up. The compressors will operate on a PID loop function.
Once the PID loop calls for the next stage to be on and the Compressor
Interstage On Delay time has been met, the next stage of cooling
will be enabled.
In Heating Mode, as the supply air temperature falls below the active
Supply Air Temperature Heating Setpoint (default: 90°F, range: 55-
120°F) minus the deadband (2°F, nonadjustable), the compressor(s)
will stage up. The compressors will operate on a PID loop function.
Once the PID loop calls for the next stage to be on and the Compressor
Interstage On Delay time has been met, the next stage of Compressor
will be enabled.
Stage Down Sequence
In Cooling Mode, as the Supply Air Temperature falls below the
active Supply Air Temperature Cooling Setpoint (default: 55°F,
range: 45-65°F) minus the deadband (2°F, non-adjustable), the
compressor(s) will stage off as minimum run times and stage down
delays allow.
In Heating Mode, as the Supply Air Temperature rises above the
active Supply Air Temperature Heating Setpoint (default: 90°F, range:
55-120°F) plus the deadband (2°F, non-adjustable), the compressor(s)
will stage off as minimum run times and stage down delays allow.
Space/Room Sensor Control Compressor Operation
