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Pioneer Gold 3.00 Controller Technical Guide
INPUTS AND OUTPUTS
Controller Input and Output Descriptions
O - Reversing Valve Call - Thermostat
This is the Reversing Valve Call from the thermostat. When
energized, the reversing valve will go into the Cool Mode
position. This is a 24 VAC wet input.
NOTE: If used in a unit where the reversing valve
energizes for heating, you will need to install a
normally closed pilot relay to control the reversing
valve.
DH - Dehumidication Call - Thermostat
24 VAC wet input.
W1 - Auxiliary Heat Stage 1 Call - Thermostat
This is the Aux Heat Call from the thermostat. This is a 24 VAC
wet input.
ALM - Alarm Output
ALM to COM delivers 24 VAC in an alarm condition.
ALM1/ALM2 - Alarm 1 / Alarm 2 Ouput
ALM1/ ALM2 is a normally closed DRY contact between the
two which OPENS in an alarm condition.
HWT - Entering Hot Water Temperature
This input is a 10k ohm Type 3 Thermistor input. It monitors
the temperature of water entering the Hot Water Heat Coil. It is
currently for monitoring only and not used for control.
WSE - Waterside Economizer Valve
This 24 VAC relay output signal is used to energize the Waterside
Economizer valve during Waterside Economizer operation.
EWT - Entering Water Temperature
This input is a 10k ohm Type III thermistor input. It is the
temperature of water entering the unit. The only time it is used
for Waterside Economizer (WSE). If you do not have WSE
FAN 2 - Supply Fan High Speed
This 24 VAC relay output signal is used to engage the fan to run
at high speed.
RV - Reversing Valve
This 24 VAC relay output signal is used to energize the reversing
valve (to cooling position).
FAN - Supply Fan Low Speed
This 24 VAC relay output signal is used to engage the fan to run
at low speed.
Y1 - Compressor Stage 1
This 24 VAC relay output signal is used to energize the
compressor contactor (i.e. step 1 of 2-step compressor).
SFS - Supply Fan Speed Analog
This 0-10VDC output signal is used to provide the speed
command for an electronically commutated motor (ECM). The
VDC level outputted corresponds with the Supply Fan Minimum
Percentage Setpoint when the Supply Fan Low Speed command
is active, and increases to the Supply Fan Maximum Percentage
Setpoint when the Supply Fan High Speed command is active.
Y2 - Compressor Stage 2
This 24 VAC relay output signal is used to energize the solenoid
for the second step of the Compressor for full capacity.
HGR - Hot Gas Reheat Valve
This 24 VAC relay output signal is used to energize the HGRH
MV - Motorized Water Valve/Pump
This 24 VAC relay output signal is used to energize the Water
Valve/Pump during normal compressor operation, unless the
use the H8 Harness to wire-in an open/closed 24 VAC Water
Valve.
HPS - High Pressure Switch
This input is used to monitor the High Pressure Switch. If the
compressor is running and the signal is removed from this input,
a High Pressure Switch Alarm will be generated. It will also
immediately disable the compressors and the fan will remain
running. The compressor will not be allowed to start if this input
signal is missing. This input is a 24 VAC wet input.
LPS - Low Pressure Switch
This input is used to monitor the Low Pressure Switch. If the
compressor is running and the signal is removed from the input
for more than 10 seconds, a Low Pressure Switch Alarm is
generated. It will also disable the compressors and the fan will
remain running. If this alarm is generated two times within two
hours, the unit will “hard” lockout and require a power cycle to
continue operation.
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