Settings For Return Air Control - Mitsubishi Electric CITY MULTI PAC-AH001-1 Manuel D'installation

• When operating in discharge air control, an offset can be applied to the discharge air thermistor (TH24)
with SW1-2 and SW1-3 to help compensate for un-ideal thermistor placement.
Dip switch
SW1-2 SW1-3
OFF OFF
ON OFF
OFF ON
ON ON

8.4.2 Settings for Return Air Control

Settings for Return Air Control with Mitsubishi Controller or 3rd Party Controller
• Thermo-ON/OFF conditions
TH24: Discharge air temperature
TH21: Return air temperature (Thermistor or remote controller)
To: The set point temperature on the remote controller
<Cooling>
The range of "To"
Thermo-OFF
Thermo-ON
<Heating>
The range of "To"
Thermo-OFF
Thermo-ON
• When operating in Return Air Control, it is not required that the Discharge Air thermistor is installed in the
duct. However, the Discharge Air thermistor can be installed in the discharge duct and used for
monitoring purposes. If the Discharge Air thermistor is installed, set SW3-3 to ON to enable the
monitoring function.
Dip switch
Return Air Control - Monitor Discharge Air Thermistor
SW3-3
OFF Monitor OFF
ON Monitor ON
PAC-AH001-1
TH24 Detection temperature
Cooling
TH24
TH24 - 1.8 °F [1 °C]
TH24 - 3.6 °F [2 °C]
TH24 - 5.4 °F [3 °C]
66.2~ 86°F [19 ~ 30 °C]
TH21 < To – 0.9 °F [0.5 °C]
TH21 > To +0.9 °F [0.5 °C]
62.6~ 82.4°F [17 ~ 28 °C]
TH21 > To +0.9 °F [0.5 °C]
TH21 < To –0.9 °F [0.5 °C]
47
Heating
TH24
TH24 + 1.8 °F [1 °C]
TH24 + 3.6 °F [2 °C]
TH24 + 5.4 °F [3 °C]
Remarks
Factory setting
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Remarks
Factory setting
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