Sears N8MPL050B12B1 - Manual (Page 32)

ous-fan option. This connection is intended for the low speed mo­
tor tap, and has a lower contact rating
(8 amps) than the heat and
cool taps. When the low speed blower lead is connected to this
terminal, this will provide low speed blower operation whenever
the other two speeds (Heat or Cool) are not energized. EAC not
powered in this mode.
Thoroughly check the system after modification to ensure the
proper operation of the circulating air blower in all modes of opera­
tion.
Separate speed selections for Heat, Cool, and
13. Furnace Maintenance
Continuous-Fan
Connect low speed lead from circulating air motor to the "Com"
terminal at the furnace control board. The appropriate motor leads
should already be connected to the "Heat" and "Cool" terminals.
Heating and Continuous-Fan Speed the Same
If it is necessary to operate the heating speed and continuous-fan
speed using the same blower speed, connect a jumper between
the "Heat" and "Cont" terminals on the furnace control board.
Note: There should be only ONE motor lead going to the "Heat"
and "Cont" terminals.
WARNING
FIRE, EXPLOSION, OR CARBON MONOXIDE
POISONING HAZARDS
Failure to have the furnace inspected and
maintained could result in death, personal injury,
and/or property damage.
It is recommended that the furnace be inspected
and serviced on an annual basis (before the heating
season) by a qualified service agency.
See "User's Information Manual".
WARNING
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could
result in dangerous operation, death, personal
injury, or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to furnace.
• When servicing controls, label all wires prior to
disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing.
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