Daikin BACnet Series - Economizer, Reversing Valve & Auxiliary Heat

IO-DAPPS www.daikinac.com 21
Procedure Steps Display
Enable the economizer
To set up the economizer do the following:
1. From the SYSTEM menu choose ECON ENABLE to enable the
economizer applicaon.
2. From the SYSTEM menu choose MIN ECON DAMPER to set the
minimum posion for the economizer damper.
3. From the SYSTEM menu choose ECON ENABLE TEM. Enter the
value that the outside air temperature must fall below before the
economizer damper can open.
4. From the SYSTEM menu choose MIN DAT. Enter the minimum
discharge air temperature that will be allowed during cooling when
the economizer is enabled.
Set the reversing valve polarity
From the SYSTEM menu choose REV VLV PLRTY. Select one of the
polarity sengs.
• Acve Heang – The O/B output terminal is acve on a call
for heang.
• Acve Cooling – The O/B output terminal is acve on a call
for cooling.
Set up auxiliary heat (Oponal feature)
From the SYSTEM menu choose AUX HEAT.
• Comp Lockout – The BACnet™ Thermostat will enable auxiliary
heat only when the compressors are locked out because of low
outside air temperature.
• 3rd Stage – The BACnet Thermostat uses the auxiliary heat as a
third stage of heang.
• None – No auxiliary heat is enabled.
Set the lockout temperature for auxiliary heat
From the SYSTEM menu choose AUX HT LOCKOUT to set the minimum
outside air temperature for auxiliary heat lockout. Auxiliary heat will
not operate above this temperature.
Set the compressor low temperature lockout.
From the SYSTEM menu choose COMP LOCK TEMP to set the
minimum outside air temperature for compressor operaon.
Compressors will not operate below this temperature.
Program Set-Up