Specifications

36
Water to Water Operation
General Description
The Heat Pump Factory mounted I/O Zone 560 or 583 DDC Controllers are factory configured
with the Water to Water application program and factory installed in the unit to be job site ready
to run.
The Unit will operate in a 100% stand-alone control mode or connect to a Building Automation
System (BAS) using open protocols BACnet® (ARCNET and MS/TP), Modbus RTU, N2 or
LonWorks® (additional network interface board required for LonWorks® option).
The point mapping to these protocols can be pre-set, so that the protocol and baud rates desired
can be easily field-selected and commissioned without the need for any additional downloads or
technical assistance. The Controller also supports communications to intelligent RS Room
sensors and BACview keypad/display panels.
Inputs
• Load (entering) water temperature sensor
• Leaving (source) water temperature sensor
• Changeover temperature sensor
• Cooling/Heating mode select (DI Mode)
• UPM Alarm codes (7 safety shutdown alarms)
• Unit Occupancy Enable (DI Enable)
Outputs
• Pump control
• Reversing Valve
• Compressor Stage 1
• Compressor Stage 2
• Aux Output