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Therefore, the efficiency knob setting is based upon comfort and efficiency. The lower the setting the
higher the overall operating annual efficiency, the higher the setting the warmer the air at the register.
Heat loss curve* – within the "brain" of the WarmFlo 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.
Factory set per table and chip on order sheet.
Temperature (Efficiency Dial)* – the red center screwdriver adjustment dial has a selection of A
through G. These A through G 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 G, the steeper the heat loss curve or the lower overall heat pump system
efficiency. If dial is turned to "full electric" the WF II will automatically go to "DT flat".
*Does not apply to chip codes such as EMA, and "flat DT" such as EMR.
Outdoor sensor reference or heating requirement level* – the outdoor digital sensor "tells" the
WarmFlo "brain" its desired (DT) value or decision making capability. This is for desired or required
supply temperatures greater than the "min. warm air" horizontal line setting. At each internal calculation
cycle a DT is determined by reading the outdoor temperature (OT) and then finding the appropriate warm
air point on the appropriate or selected diagonal line. See Figure 1 for the various diagonal lines
associated with the A through G "temperature" selection knob.
Example – if the temperature knob is set on Position C, at 20° outside the DT or the supply
delivery temperature is 100°. The WarmFlo controller now automatically adjusts and maintains
electric element power to keep the supply temperature at 100°. Likewise if it -10° outside the DT
or supply delivery temperature is 120°. The elements are re-adjusted to provide a constant 120°
temperature.
Chip code/field programming – your unit was ordered and supplied with a "coded" program chip, one
of the selections shown in each Chip Code Reference Table for your application (within the various
colored page sections). These tables show the various defaults associated with that particular code. With
WarmFlo II a number of field re-programming possibilities and options exist using either PC software or
WarmFlo analyzer, reference "WarmFlo Handheld Analyzer/Laptop Software" section. Chip code is
located on the WarmFlo II controller board white label.
Note: There are certain things such as SOT's, MU time, etc. which are only field programmable.
If the item is not shown in the chip code table, that feature or item is default set as disable.
11/01/2007
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