16
Eubank Wall Mount Heat Pump I&O Manual
05/2023 Rev.2
1.0
Indoor Blower Operation
1.1 G - Indoor Blower Only
1.2 Y1 - Indoor Blower Operation
1.3 Y2 - Indoor Blower Operation
1.4 W2 – Indoor Blower Operation
1.5 HUM – Indoor Blower Operation
2.0
Cooling Operation AC / HP
2.1 Mechanical Cooling (AC systems)
2.1.1 Partial Capacity
2.1.2 Full Capacity
2.2 Mechanical Cooling (HP systems)
2.2.1 Partial Capacity
2.2.2 Full Capacity
3.0 Economizer Operation
3.1 Enthalpy Sensor and Operation
3.2 Dry Bulb Sensor and Operation
3.3 Supply Air Sensor
3.4 Minimum Position
4.0 Heating Operation AC / HP
4.1 Electric Heat (AC systems)
4.2 Heat Pump Heating Operation
4.3 Defrost Operation (Heat Pumps)
4.4 Electric Heat / Outdoor Sensor / SCKT / EHDD (Heat Pumps)
5.0 Dehumidification Operation AC / HP
5.1 Hot Gas Reheat
5.2 Electric Reheat
6.0 Refrigeration Protection
6.1 High Pressure lockout
6.2 Low Pressure Lockout / Freeze Protection
6.3 Anti Short Cycle
7.0 Additional Features
7.1 Modulating Head pressure Control (ECM Outdoor Motors)
7.2 Emergency Ventilation
7.3 Forced Cooling
7.4 Modbus Communications
7.5 Low Voltage (Brownout)
8.0 Smoke / Fire Shutdown
8.1 System Shutdown Contact Wiring
Note:
Equipment, devices and necessary system components are specified in the respective section.
Note:
1. All inputs on the control board go through a 5 seconds Time-On Delay to prevent nuisance request.
Compressor Outputs go through 5 seconds staggered Time On delay to prevent nuisance tripping of
breaker due to the inrush associated with these large inductive loads.
2. Normal Operating Mode describes a mode in which there are no active faults which would interrupt
the operation of the system.
