System information

DCN: 141-01070-03 TR40 Thermostat Manual 21
Main Menu > Installer Settings (Hidden Screen)
The Installer Settings screen is a hidden screen designed for installer use only. Do not change any settings
in this screen unless you are qualified service personnel. Changing these settings will affect the operation of
the heating/cooling system. To enter this screen, go to the main menu selection screen and press and hold
the two inner buttons for 3 seconds until the Installer Settings screen appears.
This screen displays the current internal settings of the thermostat. You can view and change the settings
from this screen.
The Installer Settings that can be adjusted are:
Network Address Sets the serial communications network address. 1-254 valid.
Service Mode Sets the thermostat to a test mode. All delays are shortened to 15 seconds to speed up
system checkout and testing. Caution: compressor short cycle protection is lost in this mode.
Minimum Run Time Sets the minimum run time before a heating/cooling cycle can turn off. 1-9 Min
Minimum Off Time Sets the minimum off time before another heating/cooling cycle can begin. 1-9 Min.
Auto Send Mode Sets the thermostat to automatically send changes when the occur, out the serial
network connection.
Max Heat SP Sets the maximum heating setpoint that is allowed. Will not ramp or accept setpoints higher
that this maximum.
Min Cool SP Sets the minimum cooling setpoint that is allowed. Will not ramp or accept setpoints lower
than this minimum.
Delta T Settings This is a submenu of the delta, or difference between, the setpoint and current temp for
determining when a heat or cool call comes on. Deltas are the number of degrees away from setpoint.
Delta T Settings Submenu
• H/C Delta Minimum separation between heating and cooling setpoints. Setting a setpoint closer
that this delta will “push” the other setpoint higher (heat) or lower (cool). When the thermostat is in
the AUTO mode, this maintains a sufficient separation between setpoints to prevent overshoot from
causing auto-changeover and subsequent alternating heating/cooling oscillations.
• H Delta Stg 1 ON Sets the temperature delta from setpoint for a stage one heating call.
• H Delta Stg 2 ON Sets the temperature delta from setpoint for a stage two heating call.
• H Delta Stg 3 ON Sets the temperature delta from setpoint for a stage three heating call.
• C Delta Stg 1 ON Sets the temperature delta from setpoint for a stage one cooling call.
• C Delta Stg 2 ON Sets the temperature delta from setpoint for a stage two cooling call.
To change a setting, select the setting with the scroll buttons and use the + and – buttons to increase or
decrease the setting. When finished with this screen, press the Done button to return to the Main Menu
screen or wait for screen timeout.
CAUTION! Do not change these settings unless you are sure of the effect these changes will make.
Changing the network address will make the thermostat not respond if the address is incorrect.