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69-1012
First, turn in both screws completely, then
adjust for system type:
• Warm Air Furnace—Set at the Hot Water
setting (A—out one turn, B—leave in).
• Electric Furnace—Leave at the Warm Air
Furnace setting (A—leave in, B—leave in).
NOTE: This thermostat does not have a
setting for steam/gravity air. Cycles
would not be long enough for accu-
rate temperature control.
IMPORTANT
When using a high efficiency furnace
such as a 90% or greater AFUE
(Average Fuel Utilization Efficiency)
unit, adjust screw A out one turn and
leave screw B in.
■■ The thermostat is set to read the tempera-
ture in degrees Fahrenheit. If readings are
desired in degrees Celsius, adjust screw C
out one turn, as shown in illustration.