4
Position 2 on switch SW2 turns cooling modulation on and off.
MANUAL CONTROLS
When thermostat calls for heat, the element indicator lights will illuminate as the
elements turn on in sequence, the blower speed automatically adjusts as well.
When the POWER switch is in the “MODERATE” position, the furnace
operates at reduced heating capacity.
REMEMBER, during the winter months, this switch should be in the “MAX”
position to ensure maximum heating.
The POWER switch must also be set in the “MAX” position when a
2 – stage thermostat or outdoor thermostat is installed to control the electric
elements of the second stage. Also, the wire jumper on the main control, positions
W1/W2 must be removed.
The “CONTINOUS FAN” switch turns the blower on to continuous “LOW”
speed. This feature will filter the air and provide for better distribution in the
building.
CAUTION
It is important to check airflow and make sure that the furnace does not
operate above the temperatures specified in the Specifications ( Table 1 ).
This is particularly important if a cooling coil or a heat pump has been in-
stalled.
High Limit Thermal Protectors should never need to engage during normal
operation of the furnace. The High Limit protectors are designed to engage
during the improper functioning of the blower or when the filter has not been
kept clean.
WARNING
!
Summary of Contents for ALPHA
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