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Figure 1
Factory set per table and chip on order sheet.
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 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 supplied with a "multi-coded" program chip, one of the
selections shown in each Chip Code Reference Table for your application. These tables show the various
defaults associated with that particular code. With WarmFlo II version 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.
Delay, transfer from standby to electric – if the unit was operating in SB for more than 1 minute, the
follow-up transfer back to electric engages a 2-minute delay before the HP compressor relay is activated
and any of the electric stages are activated. The blower will react to the call for heat, but the elements
will stay off for 2 minutes in order for the blower to cool down the furnace heat exchanger.
06/07/2016
12
EI508
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