Trane BAYSTAT150A Thermostat Operation Manual

The Trane BAYSTAT150A is a programmable digital thermostat designed for 3-stage heat/2-stage cool systems, including heat pumps and conventional setups. It features a touch-screen interface, ENERGY STAR compliant scheduling, timed overrides, and compatibility with remote sensors for efficient HVAC control. Below are the key specifications and operation instructions.

Key Specifications

• Type: Programmable touch-screen thermostat for 3H/2C systems
• Compatibility:
  • Heat pumps and conventional systems with 3-stage heat/2-stage cool
  • Supports Emergency Heat, Cool, Auto H/C, Off, Heat modes
  • Fan-enabled systems; remote temperature sensor terminals
• Power: 24 VAC (standard HVAC transformer)
• Temperature Range: Heating: 40°F-90°F; Cooling: 50°F-99°F; Defaults: Heat 70°F day/62°F night, Cool 78°F day/85°F night
• Dimensions: Compact wall-mount design
• Features:
  • 7-day/5+2/5+1+1/1-day scheduling with up to 4 periods
  • Timed override (TOV) up to 99 days/23 hours
  • Occupancy and fan settings; ENERGY STAR compliant defaults
• Compliance: ENERGY STAR; UL listed; professional installation required

Operation Instructions

Initial Setup

1. Time Setup: From Home screen, press sequence of buttons to enter; adjust hours/minutes with arrows; save and exit.
2. System Mode: Press buttons to access; select mode (Emergency Heat, Cool, Auto, Off, Heat); save.
3. Fan Mode: Press to toggle On/Auto; overrides enter TOV in programmable mode.

Home Screen Navigation

1. Display: Shows current time, mode, fan setting; press buttons for setups.
2. Access: Use arrow buttons for adjustments; hourglass indicates TOV.
3. Overrides: Press arrows twice to enter TOV mode.

Scheduling and Presets

1. Create/Edit Schedule: Press button sequence to enter; select days, periods (up to 4), start times, heat/cool setpoints, fan.
2. Configurations: 1-day, 5+1+1, 5+2, or 7-day.
3. Defaults: ENERGY STAR compliant (e.g., Mon-Fri: Morning 70°F heat/78°F cool, Night 62°F heat/85°F cool).

Settings Screen

1. Access: Via button sequences for time, mode, fan, schedule.
2. Adjustments: Scroll and select days/periods/setpoints/fan; save by holding button or waiting.
3. Occupancy: Set during TOV or schedule.

Advanced Features

1. Timed Override (TOV): Temporary changes to setpoints/fan/occupancy; enter with arrows; set duration up to 99 days/23 hours; hourglass icon.
2. Fan Override: Temporary in programmable mode.
3. Exits: Timer end, manual save, or mode change.

Troubleshooting

• Mode Unavailable: Check system configuration.
  
• TOV Not Working: Verify programmable mode (0140=1).
  
• General: Only qualified personnel for service; improper adjustment risks injury.

Installation Instructions

Warning: Qualified personnel only; observe all safety precautions to avoid hazards.

Pre-Installation

• Mount on interior wall, 54-60" above floor, away from drafts/sun.
• Prepare 18-22 AWG wires; max length per system.
• Tools: Level, drill, screwdriver.

Wiring Diagrams

For 3H/2C Heat Pump/Conventional:

Terminal	Connection
R/Rc/Rh	24V Power
Y1/Y2	Compressor Stages
W1/W2/Aux	Heat Stages/Aux
O/B	Reversing Valve
E/W2	Emergency Heat
G	Fan
C	Common
S1/S2	Remote Sensor

Note: Jumper Rc/Rh if single transformer; refer to full manual for diagrams.

Configuration Options

1. Enter config mode post-install (hold buttons).
   
2. Set system type, scheduling (0233: 1/5+1+1/5+2/7-day).
   
3. Enable programmable (0140=1), fan.
   
4. Test modes and save.

Calculation Tool

Estimate monthly energy savings from ENERGY STAR setback (assumes 1% savings per °F setback, 30 days/month).