Trane BAC-1000 Thermostat Operation Manual

The Trane BAC-1000 is a touch screen room thermostat designed for on/off control of fans and valves in air conditioner applications, such as fan coil units and motorized valves. It features a microprocessor-based LCD display with backlight, weekly programmable scheduling, precise temperature control within 0.5°C, and options for RS485 communication and external sensors. Suitable for two-pipe and four-pipe systems, it ensures comfort and energy savings. Below are the key specifications and operation instructions.

1. Key Specifications 2. Operation Instructions 2.1. Initial Setup 2.2. Home Screen Navigation 2.3. Setting Temperature and Modes 2.4. Scheduling and Presets 2.5. Advanced Features 2.6. Troubleshooting 3. Installation Instructions 3.1. Pre-Installation 3.2. Wiring Diagrams 3.3. Configuration Options 4. Calculation Tool

Key Specifications

Type: Touch screen room thermostat for on/off control
Compatibility:
- Two-pipe and four-pipe systems (fan coil units, motorized valves, dampers)
- Options: Clock (T), Backlight (L), Weekly programmable (P), RS485/MODBUS (N), Keycard (K), External sensor (E)
- Note: P and N not compatible
Power:
- Supply: 110~240V AC, 50~60Hz
- Consumption: <1.5W
- Load: 1A inductive, 2A resistive
Sensor: NTC; Accuracy: ±0.5°C
Temperature Range: Set: 5-35°C; Ambient: 0-45°C; Storage: -5-55°C
Dimensions: 86x86x13.3mm; Installation: 86mm square or 60mm round box
Features:
- LCD with backlight; Six-period weekly programming
- Internal/external sensor selectable; Data memory on power loss
- Timing on/off, auto fan; Deadzone 1-5°C
Compliance: Fireproof PC shell; Professional installation required

Operation Instructions

Initial Setup

1. Power On: Connect power; LCD displays room temperature and setpoints.
2. Basic Configuration: During power off, press and hold UP and DOWN for 5 sec to enter functions menu; set calibration, fan control, etc.
3. Time Set: In programmable mode, adjust clock via mode button sequence.

Home Screen Navigation

1. Display: Shows room temp, set temp, fan speed, valve status, period, clock, icons (cooling, sleeping, energy saving, network, manual, lock).
2. Controls: Touch buttons: Power on/off, UP/DOWN for temp, Fan for speed, M for mode.
3. Backlight: Activates on touch for low-light viewing.

Setting Temperature and Modes

1. Temperature: Press UP/DOWN to adjust; in manual mode, icon shows.
2. System Mode: Press M to cycle HEAT, COOL, VENT (fan only, valve off).
3. Fan: Press Fan for AUTO, HIGH, MED, LOW.
4. Lock: Hold Lock 3 sec to enable/disable (icon shows).

Scheduling and Presets

1. Select Mode: Hold M until flashes, then press Fan for manual or UP for programmable.
2. Weekly Programmable: Set clock (minutes, hours, week) then enter periods: 2 zones per day (Mon-Fri, Sat, Sun) with on/off times and temp.
3. Sleeping Mode: Hold M to activate preset sleep schedule; press to confirm/cancel.
4. Override: One-touch temp adjustment; resumes schedule after.

Advanced Features

1. Sensor Selection: Internal/external via functions menu.
2. RS485 Communication: For networked control (N option); set IP address.
3. Keycard (K Option): Integrates with hotel systems.
4. Fan Control: Auto-off or low speed at setpoint.
5. Deadzone: 1-5°C adjustable.

Troubleshooting

Blank Display: Check power supply (110-240V); verify connections.
No Response: Unlock screen; cycle power.
Inaccurate Temp: Calibrate via functions menu (-9 to 9°C).
Programming Issues: Re-enter schedule; note RS485 type disables programming.
General: Contact professional; risk of shock—disconnect power before checks.

Installation Instructions

Warning: Professional technician only. Disconnect power before wiring. Risk of electrical shock—can cause injury or death.

Pre-Installation

Mount on interior wall using 86mm square or 60mm round box.
Prepare wires for power, fan, valves, optional RS485.
Tools: Screwdriver for wall plate.

Wiring Diagrams

For two/four-pipe systems (AC220V 50-60Hz power):

System	Connections
Two-Pipe	Power, Fan, Valve, RS485+ (RED), RS485- (WHITE optional)
Four-Pipe	Power, Cooling Valve, Heating Valve, Fan, RS485+ (RED), RS485- (WHITE optional)

Steps: Connect wires to terminals, fix wall plate, snap LCD board. Diagrams show terminal blocks for valves/fan/RS485.

Configuration Options

Power off, hold UP+DOWN 5 sec for menu.
Set: Calibration (-9 to 9°C), Fan control (00/01), Lock (00/01), Heat/Cool (00/01), Min/Max temp, Time format, Display mode, IP address (RS485), Deadzone (1-5°C).
Defaults: e.g., Heat/Cool 01, Deadzone 1°C.
Power on to confirm.

Calculation Tool

Estimate monthly energy savings from using programmable mode vs. manual (assumes 0.2 kWh per °F per hour for fan/valve operation; 2 periods/day setback).