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EW Series Hydronic units can be used in a variety of applica-
tions including domestic hot water, radiant fl oor heating, pool/spa
heating, fan coils, and even snow melt.
A sophisticated microprocessor controls the pumps and compres-
sor by sampling water temperatures even during “off” cycles. The
controller enables the user to view all modes of operation and
easily adjust setpoint temperatures. This control has a wide range
of set-up fl exibility to meet the variety of applications in which
the unit can be installed. However, confi guration of the control is
done only at the time of installation as it requires special codes
and a thorough understanding of the application and the control
sequence.
Generally, the unit will be set and controlled automatically to
provide the correct temperature water. However, you can view
the setpoint, by pressing the or arrow once (the display
on the control panel will begin fl ashing). Subsequent presses
of either the or arrow will change the setpoint by one
degree.
In addition to the water temperature display, the control panel
also has 6 LED indicators that indicate when the unit is in one
of the following modes: Lockout, Standby, Primary, Heating,
Cooling, or Secondary Mode. To change modes, press the
mode button.
To protect the unit, the control monitors functions and conditions within the system. In the event of a failure or
unsafe condition, the unit will go into Lockout mode. During lockout mode, the display will fl ash the lockout code
corresponding to the fault condition. The compressor, pumps, and secondary output are de-energized. Lockout
modes of any kind can be reset by pressing the mode button twice. Turning off the unit’s breaker (and then back
on after 60 seconds) also resets the lockout. Do not repeatedly reset the lockout. Doing so could damage the unit
or other components in the system. Contact your dealer to resolve the problem.
EW units include Scroll compressors and R-410A refrigerant for exceptional effi ciency and performance. These
units are ENERGY STAR® qualifi ed and safety certifi ed by ETL.
EW Series Units
PRODUCT INFORMATION FOR UNITS, OPTIONS & ACCESSORIES
