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International Environmental 71520317 7-Day Programmable Thermostat 2/4 Pipe Configuration

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Special Price $181.54 Regular Price $208.77
In stock
SKU
71520317
The International Environmental 71520317 7-Day Programmable Thermostat is a universal and economical temperature control system for 2 pipe and 4 pipe HVAC systems. However, this thermostat allows users to set different temperature settings on each day of week, so that the energy efficiency is optimal and the comfort is just that comfortable. Fan coil units, heat pumps and other HVAC equipment used in residential and commercial buildings are commonly used with this material. This feature is programmable to reduce energy costs, to maintain the same indoor condition control and to improve the system performance. It is easy to install and operate, and it makes convenience easier by adjusting the temperatures automatically to the occupancy patterns, making it a perfect choice in the energy conscious surroundings.
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HVAC Controls & Electrical, Control & Sensing Devices
Manufacturer:
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Specifications

  • Type: 7-Day Programmable Thermostat
  • Compatibility: 2/4 Pipe

Product Overview:
Designed for commercial fan coil HVAC systems, the International Environmental 71520317 7-Day Programmable Thermostat 2/4 Pipe Configuration provides scheduled temperature control for compatible two-pipe and four-pipe applications. This OEM digital thermostat allows users to establish separate occupied and unoccupied temperature settings throughout the week. Its large backlit display, automatic changeover capability, and flexible setpoint options support convenient indoor climate management.

Temperature Programming Function:
The thermostat uses an electronic temperature sensor to monitor room conditions and compare them with programmed heating and cooling setpoints. Its seven-day scheduling feature supports four daily periods, including three occupied periods and one unoccupied period. This allows temperature settings to follow building occupancy patterns rather than maintaining one constant setting throughout the day.

Fan Coil System Control:
It supports two-pipe and four-pipe fan coil configurations and provides three-speed fan control. It offers single or dual setpoint operation, automatic changeover, and temporary schedule override. Automatic changeover is available in four-pipe systems, two-pipe systems with electric heat, or two-pipe systems equipped with the specified changeover sensor accessory.

Replacement Guidelines:
The International Environmental 71520317 Thermostat should be replaced if the existing unit is damaged, its display or buttons stop responding, or it no longer maintains programmed temperature settings. Replacing a defective thermostat restores its intended scheduling and temperature control functions.

Common Failure Symptoms:

  • Display remains blank or becomes difficult to read.
  • Thermostat buttons become unresponsive.
  • Programmed schedules are not retained or followed.
  • Room temperature readings become inaccurate.
  • Heating or cooling does not respond to the selected settings.

Equipment Compatibility:
The International Environmental 71520317 is designed for compatible commercial fan coil systems configured for two-pipe or four-pipe operation. It supports three-speed fan control and the appropriate heating and cooling arrangements for each configuration. Verify the existing thermostat requirements, system pipe configuration, and changeover sensor arrangement before purchasing.

Technical Specifications:
Brand: International Environmental
Part Number: 71520317
Product Type: Programmable Digital Thermostat
System Configuration: 2-Pipe or 4-Pipe
Programming: 7-Day Programmable

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Product Questions (7)
Customer Questions
What maintenance is required for the International Environmental 71520317 Thermostat?

Regularly clean the thermostat surface and sensor area to remove dust and debris. Verify programming settings and battery power if applicable. Proper maintenance ensures accurate temperature control and prevents operational errors. Avoid using harsh cleaners.

What are common issues with the International Environmental 71520317 Thermostat?

  • Inaccurate temperature readings.
  • Failure to maintain programmed schedules.
  • Unresponsive or stuck buttons.
  • Display malfunctions.

What is the function of the International Environmental 71520317 Thermostat?

It regulates room temperature in compatible fan coil systems using programmable heating and cooling settings, fan control, and automatic changeover features.

What does the 2-pipe and 4-pipe configuration mean?

These configurations describe fan coil system piping arrangements. The thermostat supports both types when configured according to the equipment's control requirements.

How many daily schedules can this thermostat store?

It supports four programmable periods per day, including three occupied periods and one unoccupied period, across a seven-day schedule.

Does the 71520317 support multiple fan speeds?

Yes. It provides three-speed fan control, allowing compatible fan coil equipment to operate at low, medium, or high fan settings.

Does this thermostat provide automatic heating and cooling changeover?

Yes. Automatic changeover is available in four-pipe systems and certain two-pipe configurations with electric heat or the specified sensor accessory.

Installation Steps

Step 1: Turn off HVAC system power to prevent electrical shock.

Step 2: Remove existing thermostat and label all wiring connections carefully.

Step 3: Mount backplate securely on wall, ensuring level alignment.

Step 4: Connect wires according to pipe configuration wiring diagram.

Step 5: Attach thermostat unit and restore power.

Step 6: Program schedule and verify heating/cooling operation.

Step 7: Ensure correct mode selection and test system response safely.