Bard 8403-058 Water Source Heat Pump Thermostat

Product Description

The BARD 8403-058 is a wall-mount electronic thermostat designed for water source heat pump systems. It supports 2-cool/2-heat operation in conventional mode and stage 1-cool/2-heat operation in heat pump mode, making it well-suited for multi-stage hydronic and water source applications. The non-programmable design with auto and manual changeover gives technicians straightforward control without the complexity of programmable scheduling. Licensed HVAC technicians install this thermostat as a direct control interface for compatible BARD heat pump units in both residential and light commercial settings.

This thermostat is intended for wall-mount installation in systems where water source heat pump operation is required. It covers conventional two-stage cooling and two-stage heating scenarios, as well as heat pump single-stage cooling and two-stage heating configurations. The auto/manual changeover feature allows the system to switch between heating and cooling modes either automatically based on space conditions or manually as the application demands. It is a practical fit for buildings using hydronic or geothermal water source equipment where reliable, no-frills thermostat control is the priority.

Key Features

• Supports 2-cool/2-heat conventional and stage 1-cool/2-heat heat pump operation
• Non-programmable electronic design for straightforward installation and operation
• Auto and manual changeover modes for flexible system control
• Wall-mount configuration for standard thermostat placement
• Designed specifically for water source heat pump system types

Compatibility

Designed for use with BARD WH, SH, TH, WHD, SHD, and THD series water source heat pump units.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with low-voltage thermostat wiring and water source heat pump controls. Power down the heat pump system at the disconnect before removing the existing thermostat or making any wiring connections. Follow the equipment manufacturer wiring diagram and applicable local codes when terminating low-voltage control wires at the thermostat sub-base. Verify system mode selection and staging operation after installation before returning the equipment to service.

Technical Specifications

• Item Type: Thermostat
• Mounting Type: Wall Mount
• Control Type: Electronic, Non-Programmable
• Changeover: Auto and Manual
• Cooling Stages (Conventional): 2
• Heating Stages (Conventional): 2
• Cooling Stages (Heat Pump): 1
• Heating Stages (Heat Pump): 2
• Application: Water Source Heat Pump

Standard Information

• Brand: BARD
• Manufacturer Part Number: 8403-058