62-11785 3–24
TEMPERATURE SETTINGS
DEFROST TIMER
SET FOR
1.5HRS
3HRS
6HRS
12HRS
The defrost timer will automatically put the unit into the defrost
cycle at the interval selected if DTT is below 40°F (4.4°C) or the
SAT is below 45°F (7.2°C).
Shorter times are generally used for warm, humid products like
produce.
Longer times can be used for dry and frozen products.
NOTE: The timer increments time toward the next defrost only
when the DTT is below 40°F and the unit is running.
TEMP
CONTROL
RETURN AIR
SUPPLY AIR
The evaporator has both a Return Air Sensor and a Supply Air
Sensor.
RETURN AIR = With this setting the unit will operate so that the
return air (air entering the evaporator) will be controlled to set-
point. Return air temperature is generally considered to be a
good sampling of the actual product temperature.
SUPPLY AIR = The unit will operate so that the supply air (air
leaving the evaporator) will be controlled to setpoint whenever
the setpoint is in the perishable range (greater than 10.4°F (-
12°C). When the setpoint is in the frozen range the unit will con-
trol the return air as described in the preceding Return Air
choice.
OUT OF RANGE
ALARM
Metric
English
OFF OFF
2°C 4°F
3°C 5°F
4°C 7°F
The value entered here is the number of degrees away from
setpoint the temperature may drift before it is considered “Out-
Of-Range” and the configured alarm or alarm and shutdown ac-
tion will be activated. Refer to Alarm 00053 for more informa-
tion.
PERISH
SENSITIVE
PRODUCT
ON
OFF
OFF = Supply air temperature will be limited to the colder tem-
perature of 32°F (0°C) or set point less the SUPPLY AIR LIMIT
CONFIGURATION VALUE.
ON = Supply air temperature will be limited to set point less the
Supply air Limit Configuration value.
Refer to Section 4.8.1 for information on Perishable Sensitive
Product and Supply Air Configuration interaction.
START-STOP SETTINGS
Time and Temperature values that control Start-Stop Operation are set in this section.
The system may be configured so that:
1. the same settings apply to any setpoint = “Together” or
2. the settings are different, depending on whether the setpoint is in the perishable range or in the frozen range =
“Separate”.
• If “together” is configured, there will be six settings with only the sixth applicable to just frozen range.
• If “Separate” is configured there will be eleven settings five labeled perishable and six labeled frozen.
• MIN RUN TIME: 4 MINS
TO
60MINS (in 1 minute in-
crements)
This determines the minimum run time for perishable/frozen
setpoints in Start-Stop Operation.
• MIN OFF TIME: 10 to 90MINS (in 1 min-
ute increments)
30 MINS
This determines the minimum off time for perishable/frozen set-
points in Start-Stop Operation.
Table 3–2 Functional Parameters
FUNCTION
PARAMETER
SELECTIONS
DESCRIPTION
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