Trane Nexia TZEMT400BB32MAA Thermostat Operation Manual

The Trane Nexia TZEMT400BB32MAA is a Z-Wave enabled thermostat for central heating and cooling HVAC systems, providing typical thermostat control with remote access via Nexia Home Intelligence. It features a graphical LCD display, 7-day programmable scheduling, energy-saving modes, and integration with Z-Wave networks for smart home control. Below are the key specifications and operation instructions.

Key Specifications

• Type: Z-Wave enabled thermostat for heating/cooling HVAC systems
• Compatibility:
  • Z-Wave networks and controllers (Thermostat General V2 class)
  • Forced air systems: single/multistage heat/cool, heat pumps
  • Nexia Home Intelligence for remote access (requires bridge)
• Power: 24V common and hot wire required
• Temperature Range: Heat: 55-90°F; Cool: 60-99°F; Calibration: ±7°F
• Dimensions: 5.7” W x 4.0” H x 1.2” D; 4.3” touchscreen LCD
• Features:
  • 7-day scheduling (up to 4 periods/day); Energy Savings Mode (ESM)
  • Graphical LCD with backlight/contrast adjustment; humidity sensor
  • Filter/maintenance reminders; usage graphs; Z-Wave inclusion/exclusion
  • Dehumidification; fan cycler; recovery operation
• Compliance: FCC/IC compliant; 1-year warranty (5-year if registered)

Operation Instructions

Initial Setup

1. Set Clock: MENU > User Settings > Set Clock; adjust hour/minute/day/year/month/date.
2. Z-Wave Enrollment: Press Z-Wave button (hold 2s); follow controller prompts for inclusion.
3. Enable Scheduling: MENU > User Settings > Schedule > Enable (default Yes).
4. Calibrate Sensor: MENU > User Settings > Sensor Calibration (±7°F).

Home Screen Navigation

1. Display: Ambient temp, clock, system mode (Off/Heat/Cool/Auto/EM Heat), setpoint, fan (Auto/On/Circ), indicators.
2. Controls: Up/Down arrows for setpoints; MODE/FAN/SCHEDULE buttons.
3. Minimized Mode: Screen timeout to temp-only view (0-120s, default 30s).

Scheduling and Presets

1. Access: MENU > User Settings > Schedule > Edit.
2. Edit: Select day, periods (up to 4); set time/heat/cool setpoints (min 3°F delta).
3. Copy: Copy to other days.
4. Presets: Load Comfort/Energy Star (non-editable defaults); ESM for savings setpoints.

Settings Screen

1. User Settings: MENU > Clock, Filter/Maint reminders, Screen timeout/backlight, Scale (F/C), Calibration.
2. ESM: Set heat/cool setpoints (default 62°F/85°F).
3. Security: Display/Guest lock (hold up/down to disable).
4. Installer (Hidden): Hold middle buttons + MENU; system/mechanical/fan settings.

Advanced Features

1. Z-Wave: Include/exclude via button; check Node ID in About.
2. Usage Graph: View weekly heat/cool runtime.
3. Recovery: Gradual temp recovery (enable in Installer).
4. Dehum: RH setpoints (Cool 30-60%, Heat 10-45%); overcooling.

Troubleshooting

• Clock Blinks: Reset via MENU > Set Clock.
  
• Z-Wave Fail: Repeat inclusion; check Node ID (non-00).
  
• Reminders: Reset filter/maint after service.
  
• HVAC Issues: Contact dealer; check runtime graphs.

Installation Instructions

Warning: Professional installation required; 24V common/hot wire must be connected.

Pre-Installation

• Mount interior wall, 54-60" high, avoid drafts/sun.
• Prepare 24V wiring; Z-Wave bridge for remote.

Wiring Diagrams

Standard low-voltage:

Terminal	Connection
R	24V Hot
C	Common
W1	Heat 1
Y1	Cool 1
G	Fan
O/B	Changeover

Configuration Options

1. Installer menu: System type, stages, setpoints, recovery.
   
2. Z-Wave inclusion.
   
3. Test modes; firmware upgrade via Nexia.

Calculation Tool

Estimate monthly savings from ESM (assumes 0.5 kWh/hr per °F; 30 days/month).