Braeburn 5220 Thermostat Operation Manual

The Braeburn 5220 is a programmable thermostat designed for multi-stage systems including up to 3 heat/2 cool heat pump or up to 2 heat/2 cool conventional systems, single-stage heat pumps with auxiliary heat, and 250–750 millivolt heat-only systems. It features a large display, 7-day, 5-2 day, or non-programmable options, SpeedBar for easy adjustments, and precise temperature control, ideal for residential and commercial applications. Below are the key specifications and operation instructions.

Key Specifications

• Type: Programmable thermostat with 7-day, 5-2 day, or non-programmable options
• Compatibility:
  • Up to 3 heat/2 cool heat pump systems
  • Up to 2 heat/2 cool conventional systems
  • Single-stage heat pumps with auxiliary heat
  • 250–750 millivolt heat-only systems
  • 2 or 3 wire hydronic zone systems
  • Not compatible with multi-stage systems beyond specifications or systems exceeding 30 VAC
• Power Source:
  • Battery: Two "AA" alkaline batteries (included)
  • Hardwired: 18-30 VAC with common (C) wire
• Electrical Rating:
  • Terminal Load: 1 amp maximum per terminal
  • Setpoint Range: 45°F to 90°F (7°C to 32°C)
  • Accuracy: +/- 1°F (+/- 0.5°C)
• Display: Large LCD display with program indicators, backlit
• Operating Conditions:
  • Ambient: 32°F to 105°F (0°C to 41°C)
  • Humidity: 90% non-condensing max
• Dimensions: 3.70” H x 5.16” W x 1.38” D
• Features:
  • Large easy-to-read display with SpeedBar
  • Adaptive Recovery Mode (ARM™)
  • Service monitors for filter, UV, humidifier
  • HOLD mode for temperature override
  • Auto changeover mode
  • Outdoor temperature display (with sensor)
  • Lockout security levels
• Thermostat Configuration Options:
  • Conventional or heat pump systems (up to 32HP or 22CONV)
  • Fahrenheit or Celsius display
  • Residential or commercial profile
  • Gas or electric heat
  • Stage differentials and cycle rates
  • Reversing valve settings

Operation Instructions

Initial Setup

1. Insert Batteries: Install two "AA" alkaline batteries in the slot at the rear of the thermostat, ensuring correct polarity.
2. Power On: If hardwired, connect 18-30 VAC to the appropriate terminals. The display should show the current time and temperature.
3. Configure System:

• Access installer settings menu to set system type (e.g., 32HP for 3 heat/2 cool heat pump), differentials, cycle rates, backlight, temperature scale (°F/°C), programming periods.
• Set user options: clock format, service monitors, override limits, lock code.
• Set time and day: Press DAY/TIME, use SpeedBar to adjust hour, minute, day, press RETURN to save.
• Program schedule: Hold PROG for 3 seconds for SpeedSet, or press PROG for individual days.

Operating the Thermostat

1. Select Mode: Press SYSTEM to choose AUTO, COOL, OFF, HEAT, or EMER (emergency heat for heat pumps).
2. Fan Mode: Press FAN to select AUTO, ON, or PROG (programmable fan).
3. Adjust Temperature: Use SpeedBar up/down to set desired temperature. For temporary override, adjust in program mode; for hold, press HOLD. Cancel by pressing RETURN.
4. Programming: Press PROG to enter mode, customize schedules for 7-day, 5-2 day, or commercial with events like MORN, DAY, EVE, NIGHT. Use factory pre-programmed settings if desired.
5. Verify Operation: In HEAT, set above room temp; status shows heating. In COOL, set below; shows cooling. Adaptive Recovery adjusts start time.
Note: View outdoor temperature by pressing PROG and HOLD if sensor connected. Lock with code for security. Auto changeover switches modes automatically.

Temperature Display Adjustment

The thermostat has +/-1°F accuracy. Adjust temperature scale (°F/°C) in installer settings. Set point limits via installer options. No specific calibration; use a separate thermometer to verify. Relocate if near drafts or heat sources. Indoor/outdoor remote sensing available.

Troubleshooting

• No Display: Check battery polarity or replace batteries. Verify 24V power if hardwired. Press RESET.
  
• No Heat/Cool: Ensure mode is correct, setpoint appropriate, power on. Check wiring, breakers. For heat pumps, try EMER mode.
  
• Fan Runs Constantly: Set FAN to AUTO or PROG, not ON.
  
• Inaccurate Temperature: Ensure proper location away from drafts/heat sources. Check sensor settings.
  
• Erratic Operation: Check for voltage issues or reset thermostat.
  
• Service Indicators: Reminders for filter, UV, humidifier; reset after maintenance by pressing RETURN.
  
• Buttons Not Working: Replace batteries. Low battery indicator flashes; replace promptly.

Installation Instructions

Warning: For experienced technicians only. Disconnect power before installation to prevent shock or damage. Thermostat requires 24V AC or 2 "AA" batteries. Conform to local codes.

Remove Old Thermostat

• Turn off power at circuit breaker. Remove old thermostat, label wires for terminals. Handle mercury thermostats carefully and dispose properly per regulations.

Installing New Thermostat

1. Separate thermostat body from sub-base.
2. Mount sub-base on wall at 5 feet height, mark and drill holes, use anchors if needed.
3. Connect wires to terminals per wiring diagram (e.g., Rc/Rh for power, W1/W2 for heat stages, Y1/Y2 for cool, O/B for reversing valve).
4. Set installer settings: system type, differentials, etc.
5. Push excess wire back, plug hole with insulation to prevent drafts.
6. Snap thermostat body onto sub-base. Insert quick reference card.

Battery Location

• Batteries in rear compartment. Replace when low battery indicator shows. Use alkaline "AA" batteries.
• If unoccupied for long periods, replace batteries before leaving.

Power Options

Use 24V AC for primary power with batteries as backup, or batteries only. In dual transformer systems, common from cooling transformer.

Thermostat Power Method	Description
Battery Powered	Runs on two "AA" batteries.
Hardwired with Battery Backup	Runs on 18-30V AC from transformer with batteries as backup.

Caution: Ensure correct polarity for batteries. Do not short terminals during testing.