User's Manual

Advanced System Setup – Installer Settings
The TZ45H has advanced system setup options. These settings are accessed in the Installer Settings screen on the thermostat.
The Installer Settings is a hidden screen. To access it, press the MENU button to switch to the Menu Selection screen. Press and
hold the middle two buttons for 5 seconds to switch to the Installer Settings Screen.
Thermostat Main Menu
Installer Settings screen
Installer Settings Menu items
Display Lock Range: Y or N Default: N
Y = Display LOCKED
N = Display unlocked
Allows you to lock or unlock the thermostat buttons. When the buttons are locked, you can still access the main menu, but you will
not be allowed to select any menu options. The Installer Settings hidden button operation is always operational, allowing you to
return to this screen and turn Display Lock off.
Service Mode
Test Mode Range: Y or N Default: N
Y= Test mode on. Reduces all delays to 10 sec for quicker system testing
N= Test mode off. Normal system delays
CAUTION: in test mode all system safety delays are shorten. Do not operate the system compressor in test mode.
Disconnect Y1 or Y2 outputs if using test mode on a live system.
System Settings Submenu: Sets the HVAC operational settings below
Mechanical Settings Submenu: Sets HVAC system type and configuration
Type Range: Gas/Elec or Heat pump Default: Gas/Elec
Selects HVAC type, Gas/Electric or Heat pump
Fan Type Range: Gas or Elec Default: Gas
Selects the Fan type if system is Gas or Electric
C/O Type Range: w/Cool or w/Heat Default: w/Cool
Selects the Heat Pump Changeover Valve type
2
nd
Stage Heat Range: Y or N Default: N
Enables the 2
nd
Stage Heat operation
Aux Heat (HP) Range: Y or N Default: Y
Press and hold two middle buttons to enter the Installer Settings screen
Done
Select
User Settings
Away Setpoints
ZWave Install
Thermostat Info
Menu Selection
Done
Select
Display Lock N
Service Mode
System Settings
Max Heat SP 90
Installer Settings
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