Operating instructions

12/23/2011 14 EI711A
Important
This special model has its own programming chip. The unit as received should include version 17.*. If
this is not the case there will be an immediate error when power is turned on.
Minimum Warm Air
This dial switch sets a “floor” or minimum operating temperature level. The supply temperature will
never go below this point independent of outdoor temperature, heat pump output, etc.
0 = 90 4 = 98 Factory set on #3.
1 = 92 5 = 100
2 = 94 6 = 102
3 = 96 7 = 104
Comment: Suggest 94 or 96 for heat pump but probably 102 for non-heat pump.
Temperature (Efficiency Dial)
Located on the front cover is a red screwdriver adjustment dial
with selection A through H. These A through H selections
represent a supply temperature point at 0° outdoor. The closer
the user or installer selection is to A, the flatter the heat loss
curve or the higher the operating efficiency. The closer a
selected setting is to H, the steeper the heat loss curve or the
lower overall heat pump system efficiency.
Heat loss curve – within the “brain” of the WarmFlo Select controller is a relationship of supply
temperature (ST) to outdoor temperature (OT) measurement. As it gets colder outside, the higher the
supply temperature in order to properly overcome the heat loss within the structure. This is the diagonal
line between 67° outdoor and maximum Btuh (heat loss) at the coldest outdoor temperature. The slope of
this line or the exact warm air position at the coldest temperature is established by the “efficiency”
adjustment knob or dial.