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Thermostat Setup Menus

The thermostat must be set up for the correct HVAC system type for proper operaon.

Preset HVAC System Sengs

The thermostat is preset for the following typical HVAC system conguraon:

• HVAC system type: Standard gas/electric

• HVAC fan type: Gas heat

• HVAC heang stages: one

• HVAC cooling stages: one

If the thermostat is installed on this type HVAC system, the System Setup does not need to be

changed.

If installed on a Heat Pump HVAC system or any HVAC conguraon other than the preset sengs,

change the sengs in the SYSTEM setup menu to match the HVAC system.

NOTE: To conserve baery life, the thermostat backlight turns o aer a short me of no acvity.

The rst press of any buon turns on the backlight (but does not iniate any acon). Press the buon

again to iniate the acon desired. If the backlight is already on, buon presses work with the rst

press.

Wait Mode

The thermostat has a Minimum O Time (MOT) delay aer any heang or cooling cycle ends. This

delay prevents rapid heang/cooling cycles and also provides “short cycle protecon” for the system

compressor. This delay may be noceable when you change a setpoint and it does not respond

immediately due to the MOT delay mer prevenng the system from restarng. The MOT delay me

can be adjusted in the Advanced Sengs menu of the thermostat but there is a minimum of ve

minutes delay to assure compressor protecon.

Minimum Run Time (MRT)

The thermostat has a Minimum Run Time delay aer the start of any heang or cooling call. This

minimum run me assures even heang and cooling cycles. The MRT will keep the system on, even

if it reaches the setpoint room temperature, or you change the setpoint to a temperature that would

sasfy the call, unl the MRT expires. Changing the Mode to OFF will cancel the MRT and the system

will turn o immediately. The MRT can be adjusted in the Advanced Sengs menu of the thermostat.

NOTE: The MRT delays are shown by ashing heat or cool icons on the display.

NuTone NTBZ48 User Manual

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