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Program Set-Up
Set Heat Pump Unit Systems Options
The items in the system menu control application specific functions
for heat pump units. Entering the system options requires entering
Password 2.
Table 12: Set Heat Pump Unit Systems Options
Procedure
Starting display
Choose and set the heat pump system options
Set the local override time
Set the fan delay
Set the occupied fan control
Set up staged cooling and heating
IO-DAPPS
Steps
1. Start at the temperature display.
2. Enter Password 2. The display changes to the MAIN menu display.
1. From the MAIN menu, press either the ▲ or ▼ button to
select SYSTEM.
2. Press Enter. The SYSTEM menu opens.
3. Choose any of the following items.
• LOCAL OVRD TIME
• FAN DELAY OFF
• OCCUPIED FAN
• MIN OFF TIME
• STAGE DELAY
• ECON ENABLE
• MIN ECON DAMPER
• ECON ENABLE TEM
• MIN DAT (optional)
• REV VLV PLRTY
• AUX HEAT (optional)
• AUX HT LOCKOUT (optional)
• COMP LOCK TEMP
From the SYSTEM menu choose LOCAL OVRD TIME to set the time
the BACnet™ Thermostat will hold an override temperature setpoint
as the active setpoint. At the end of the period, the BACnet
Thermostat will use either an occupied or unoccupied setpoint as
the active setpoint.
From the SYSTEM menu choose FAN DELAY OFF to set the time the
system fan will continue to run after the last heating or cooling stage
is turned OFF.
From the SYSTEM menu choose OCCUPIED FAN to choose the
following:
• When ON, the fan will run continuously when the BACnet
Thermostat schedule is ON (occupied).
• When the BACnet Thermostat schedule is OFF (Unoccupied) the
fan will run only when there is a call for heating or cooling.
To set up staged cooling and heating do the following:
1. From the SYSTEM menu choose MIN OFF TIME to enter the time a
stage must remain turned off before it can be turned on again.
2. From the SYSTEM menu choose STAGE DELAY to enter the time the
first stage must remain turned on before the second stage can be
turned on.
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