62-12259 4–16
When the unit restarts, it will return to Continuous Operation for a minimum of 15 minutes or the Minimum
Run Time Functional Parameter setting, whichever time is longer. The original activation conditions must
then be met in order for the unit to return to ProductShield Econo: Start/Stop.
ProductShield Econo Go To Start/Stop Examples:
The following examples apply in situations where all other Start/Stop conditions have been
met.
• Example 1 If the Minimum is set to 30°F (-1.1°C) and the Maximum is set to 40°F (4.4°C) and the ambi-
ent air temperature falls between these temperatures, the unit operation can change to Econo Start/
Stop.
• Example 2 If the Minimum is set to 30°F (-1.1°C) and the Maximum is set to OFF and the ambient air
temperature is above 30°F (-1.1°C), the unit operation can change to Econo Start/Stop.
• Example 3 If the Minimum is set to OFF and the Maximum is set to 40°F (4.4°C) and the ambient air
temperature falls below 40°F (1.7°C), the unit operation can change to Econo Start/Stop.
• Example 4 If both the Min and the Max are set to OFF, unit operation can change to Econo Start/Stop
at any ambient temperature.
ProductShield Econo - Go to Continuous Operation
When the unit is set for Start/Stop, ProductShield Econo allows the unit to run in Continuous Operation
when:
• ProductShield Econo configuration is set to GO TO CONTINUOUS AND
• The unit has run in Start/Stop Operation for a minimum of 15 minutes OR the Minimum Run Time, Func-
tional Parameter setting (whichever time is longer) AND
• The ambient temperature falls outside the pre-programmed temperature range AND
• The unit is not already running in ProductShield Winter. (See Section 4.10.3.3.)
Once the microprocessor detects that the above criteria have been met, the unit will switch from Start/Stop
to Continuous Operation for a minimum of 30 minutes. After 30 minutes the unit will return to Start/Stop if
the ambient temperature enters the pre-programmed temperature range.
Delta-t logic is not used or available when ProductShield Econo - Go To Continuous is active.
ProductShield Econo Go To Continuous Examples:
• Example 1 If the Minimum is set to 0°F (-17.8°C) and the Maximum is set to 90°F (32.2°C) and the
ambient air temperature falls outside these temperatures, the unit operation can change to Econo Con-
tinuous Operation.
• Example 2 If the Minimum is set to 0°F (-17.8°C) and the Maximum is set to OFF and the ambient air
temperature falls below 0°F (-17.8°C), the unit operation can change to Econo Continuous Operation.
• Example 3 If the Minimum is set to OFF and the Maximum is set to 90°F (32.2°C) and the ambient air
temperature falls above 90°F (32.2°C), the unit operation can change to Econo Continuous Operation.
• Example 4 If both the Minimum and Maximum are set to OFF, ProductShield Econo: Go To Continuous
can not operate as there is no range for the ambient to fall outside of.
4.9.3.2 ProductShield High Air
ProductShield High Air allows the microprocessor to automatically switch the engine from normal to forced
high speed, and thereby provide high evaporator air flow. This allows maximum product protection when
certain conditions are met while providing for power savings when High Air is not required.
Operation in High Air is controlled by four Configurations; ProductShield High Air, High air Minimum Tem-
perature, High Air Maximum Temperature and High Air Delta-T.
• The Product Shield High Air Configuration may be set to OFF or ON. ProductShield High Air is only active
when the Configuration is set to ON.
• The High Air ambient air temperature range is defined by the High Air Maximum Temperature Configuration
setting and the High Air Minimum Temperature Configuration setting. When a value is entered for both of
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