Robertshaw Smart Sense Series Installation Manual page 12

Switch 1 – Relay Assignment
Switch 1 sets the function of the fan relays as either: 3 fan speeds with 1 heat and
1 cool operation or single fan speed with 2 heat and 2 cool operations.
Switch 2 – Equipment Type
Both heat with add-on cooling or heat pump types of systems can be controlled.
Heat / Cool Systems use the W terminal(s) only for heating and the Y terminal(s)
only for cooling.
Heat Pump Systems use the Y terminal(s) for BOTH heating and cooling. The
W1 terminal is used to control the reversing valve which determines heating or
cooling mode.
Switch 3 – Equipment Stages
When it is necessary to control a single stage A/C system fitted with auxiliary
heating elements, turn Sw3 OFF, thereby selecting single stage mode. Heating
elements controlled by the W2 output are now assigned stage 2 heat.
Switch 4 – Reversing Valve or Fan Mode
When Sw2 is ON it is set for Heat Pump mode. This switch will set the reversing
valve logic (O/B). When Sw2 is OFF it is set for Heat Cool Mode. This switch will
then set the mode for the Heater fan logic (HG or HE mode).
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