Heagstat H725 Programmable Heat Pump Thermostat

1. Product Overview

The Heagstat H725 is a 5/1/1 day programmable heat pump thermostat designed for efficient temperature control in residential environments. It features a 4.5 square inch display with a white backlight for clear visibility and large buttons for ease of use. This thermostat is compatible with heat pump systems requiring 2 heat and 1 cool stages, including auxiliary or emergency heating.

Key Features:

• 5/1/1 Day Programmable Schedule (Weekdays, Saturday, Sunday)
• 4 Program Periods per Day (Wake, Leave, Return, Sleep)
• Compatible with 2 Heat / 1 Cool Heat Pump Systems (with Aux or Emergency heating)
• Accurate Temperature Control of +/-1°F
• Adjustable Heat or Cool Swing (0.2°F to 2°F)
• Room Temperature Calibration Adjustment
• 5 Minute Compressor Delay Protection (Selectable ON or OFF)
• Air Filter Change Reminder
• Low Battery Indicator
• Dual-powered: 24VAC hardwire and/or 2 x AAA batteries

Image 1.1: Front view of the Heagstat H725 thermostat, showing the large digital display, control buttons, and system switches.

2. Compatibility and System Requirements

Before installation, verify that your HVAC system is compatible with the Heagstat H725 thermostat. This thermostat is designed for use with Heat Pump Systems (with Aux or Emergency heating) up to 2 Heat / 1 Cool.

2.1. System Compatibility

• Heat Pump Systems with Auxiliary or Emergency Heat (2 Heat / 1 Cool)

2.2. System Incompatibility

The H725 thermostat is not compatible with the following systems:

• Heating-only systems
• Cooling-only systems
• 110-240V electric heat systems (e.g., electric baseboard heat, line voltage, convectors, radiant-ceiling heat)
• Conventional multi-stage systems
• Mini split systems
• 12V RV thermostats
• Systems with stranded wires or wires labeled 110V or 120V

Image 2.1: The Heagstat H725 thermostat showing its wiring terminals and a table detailing compatibility for heat pump and conventional systems.

Image 2.2: Illustrations demonstrating wiring types that are incompatible with the H725 thermostat, including stranded wires and 110V/120V labels.

3. Installation Guide

This section provides instructions for installing your Heagstat H725 thermostat. It is recommended to consult a qualified HVAC technician if you are unsure about any steps.

3.1. Tools Required

• Screwdriver (Phillips head)
• Drill (if new mounting holes are needed)
• Wire strippers (if wires need to be prepared)
• Pencil

3.2. Pre-Installation Steps

1. Turn off Power: Before beginning any work, turn off the power to your heating and cooling system at the main circuit breaker or fuse box.
2. Remove Old Thermostat: Carefully remove the cover of your old thermostat. Take a picture of the wiring connections for reference.
3. Label Wires: Use the provided cable labels to mark each wire according to its terminal designation on your old thermostat. If no labels are provided, use masking tape and a pen.
4. Disconnect Wires: Disconnect the wires from the old thermostat terminals.
5. Remove Old Mounting Plate: Unscrew and remove the old thermostat's mounting plate from the wall.

3.3. Mounting the New Thermostat

1. Separate Thermostat: Gently separate the front display unit of the H725 from its backplate. This may require a gentle prying motion.
2. Position Backplate: Hold the new thermostat's backplate against the wall, ensuring the wires come through the opening. Mark the new mounting holes with a pencil.
3. Drill Holes: If necessary, drill pilot holes for the anchors. Insert the provided wall anchors.
4. Secure Backplate: Route the wires through the backplate opening and secure the backplate to the wall using the provided screws. Ensure it is level.

3.4. Wiring Connections

Connect the labeled wires to the corresponding terminals on the H725 backplate. Refer to the wiring diagrams below for specific heat pump system configurations.

Image 3.1: Detailed wiring diagrams for the Heagstat H725 thermostat, illustrating connections for typical 2H/1C heat pump systems with and without separate emergency heat, and conventional systems.

Important Wiring Notes:

• Power Supply: The thermostat can be powered by 24VAC hardwire (C wire required) or 2 x AAA batteries. For optimal performance and backlight functionality, hardwiring is recommended.
• Changeover Valve: Use either the O or B terminal for the changeover valve, depending on whether your system energizes the valve in cooling (O) or heating (B). Most heat pumps energize in cooling (O).
• Jumper: In some systems with no emergency heat relay, a jumper may be used between E and W2. (Jumper not supplied)

3.5. Powering the Thermostat

1. Install Batteries: If using battery power or as a backup, insert 2 new AAA alkaline batteries into the battery compartment located at the bottom front of the thermostat. Ensure correct polarity.
2. Attach Front Unit: Carefully align the front display unit with the backplate and snap it into place.
3. Restore Power: Turn the power back on at the main circuit breaker or fuse box.

Image 3.2: The Heagstat H725 thermostat with its battery compartment open, showing the location for two AAA batteries and labeled control buttons.

4. Operating Instructions

This section details how to operate your Heagstat H725 thermostat, including basic settings and programming.

4.1. Display Overview

The large LCD displays the current room temperature, set temperature, time, day of the week, system mode, fan status, and program period.

Image 4.1: The Heagstat H725 thermostat mounted on a wall, showcasing its large screen and clear display of temperature and time.

4.2. Setting the Time and Day

1. Press the 'Set Time' button (second button from top on the left).
2. Use the Up (▲) or Down (▼) arrow buttons to adjust the hour.
3. Press 'Set Time' again to move to minutes, then adjust with Up (▲) or Down (▼).
4. Press 'Set Time' a third time to set the day of the week, then adjust with Up (▲) or Down (▼).
5. Press 'Menu' or wait a few seconds for the settings to save and return to the main display.

4.3. System Mode Selection

Use the SYSTEM switch (located on the right side below the display) to select the desired operating mode:

• OFF: Turns off the heating and cooling system.
• HEAT: Activates the heating mode.
• COOL: Activates the cooling mode.
• EMH (Emergency Heat): Activates emergency heating, bypassing the heat pump.

4.4. Fan Operation

Use the FAN switch (located on the left side below the display) to select the fan operation:

• ON: The fan runs continuously, regardless of whether the heating or cooling system is active.
• AUTO: The fan runs only when the heating or cooling system is actively operating.

4.5. Setting the Temperature

In HEAT or COOL mode, use the Up (▲) or Down (▼) arrow buttons to adjust the desired set temperature. The thermostat will maintain this temperature.

4.6. Programming a Schedule (5-1-1 Day)

The H725 allows for separate programming for weekdays (5 days), Saturday (1 day), and Sunday (1 day), with 4 program periods per day: Wake, Leave, Return, and Sleep.

1. Press the 'Set Schedule' button (third button from top on the left).
2. The display will show the current program period (e.g., 'Wake' for Mon-Fri).
3. Use the Up (▲) or Down (▼) arrow buttons to adjust the start time for the current period.
4. Press 'Set Schedule' to move to the temperature setting for that period, then adjust with Up (▲) or Down (▼).
5. Repeat steps 3 and 4 for all four periods (Wake, Leave, Return, Sleep) for Mon-Fri.
6. After setting the Mon-Fri schedule, press 'Set Schedule' again to move to Saturday's 'Wake' period, and repeat the process for Saturday and then Sunday.
7. Press 'Menu' or wait a few seconds to save the schedule and exit programming mode.

Image 4.2: An illustration of the 5-1-1 day programming schedule on the H725 thermostat, showing distinct settings for weekdays, Saturday, and Sunday across four daily periods.

4.7. Hold Function (Non-Programmable Mode)

To temporarily override the programmed schedule and maintain a constant temperature:

1. Adjust the temperature to your desired setting using the Up (▲) or Down (▼) arrow buttons.
2. Press the 'Hold' button (bottom button on the left). The thermostat will display 'Hold' and maintain the set temperature indefinitely.
3. To cancel the hold and resume the schedule, press the 'Run Sched' button (top button on the left).

Image 4.3: The H725 thermostat display showing the 'Hold' function activated, allowing users to maintain a constant temperature outside of the programmed schedule.

5. Maintenance

Regular maintenance ensures optimal performance and longevity of your thermostat.

5.1. Battery Replacement

The thermostat will display a low battery indicator when the batteries need to be replaced. To replace the batteries:

1. Open the battery compartment door located at the bottom front of the thermostat.
2. Remove the old AAA batteries.
3. Insert 2 new AAA alkaline batteries, ensuring correct polarity (+/-).
4. Close the battery compartment door.

If the thermostat is hardwired, the batteries serve as a backup and should still be replaced when indicated.

5.2. Air Filter Change Reminder

The H725 thermostat includes an air filter change reminder. This reminder can be set to activate after a specified number of operating hours (e.g., 50-2000 hours). When the reminder appears on the display, it indicates that your HVAC system's air filter may need inspection or replacement. Refer to your HVAC system's manual for filter replacement instructions.

5.3. Cleaning the Thermostat

Wipe the thermostat's exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents.

6. Troubleshooting

This section addresses common issues you might encounter with your H725 thermostat.

6.1. No Display or Blank Screen

• Check Batteries: Ensure fresh AAA batteries are installed correctly.
• Check Power: Verify that the power to your HVAC system is on at the circuit breaker. If hardwired, check the C wire connection.

6.2. Heating/Cooling System Not Responding

• Check System Mode: Ensure the SYSTEM switch is set to HEAT or COOL, not OFF.
• Check Set Temperature: Make sure the set temperature is above the room temperature for heating or below for cooling.
• Compressor Delay: The thermostat has a 5-minute compressor delay. Wait for 5 minutes after changing modes or adjusting temperature before expecting the system to start.
• Wiring: Double-check all wiring connections against the diagrams in Section 3.4. Incorrect wiring is a common cause of system malfunction.
• Compatibility: Reconfirm your HVAC system's compatibility (refer to Section 2).

6.3. Inaccurate Temperature Reading

• Calibration: The thermostat supports room temperature calibration adjustment. Refer to the full installation manual for instructions on how to access and adjust this setting.
• Location: Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its temperature sensor.

6.4. Programming Issues

• Review Steps: Carefully re-read the programming instructions in Section 4.6.
• Hold Function: Ensure the 'Hold' function is not active, as it overrides the schedule. Press 'Run Sched' to resume programming.

7. Specifications

Image 7.1: The Heagstat H725 thermostat and its included components: operation manual, installation manual, mounting screws, and anchors.

8. Warranty and Support

8.1. Warranty Information

The Heagstat H725 thermostat comes with a 2-year Worry-Free Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.

8.2. Return Policy

This product is eligible for 30 days free return from the date of purchase, subject to the retailer's return policy.

8.3. Customer Support

If you encounter any problems or have questions regarding your Heagstat H725 thermostat, please contact Heagstat customer support. We aim to respond to inquiries within 24 hours.

For further assistance, please refer to the contact information provided with your product packaging or visit the official Heagstat website.