Sun Star Heating Products 30348100 Two Stage Thermostat

Product Description

The SUN STAR HEATING PRODUCTS 30348100 is a two-stage economy thermostat designed for indoor heating and cooling control applications. Operating on 24 volts, it provides reliable temperature regulation across a range of 50 to 90 degrees F with a 4-degree F differential. The manual changeover design allows technicians to select heating or cooling mode directly at the unit. This thermostat is suited for installation by licensed HVAC technicians in light commercial and residential settings where a cost-effective, two-stage control solution is required.

The 30348100 is intended for indoor use where ambient humidity does not exceed 85 percent RH. Its two-stage operation supports systems that use staged heating or cooling equipment, allowing the second stage to engage only when the first stage cannot satisfy the setpoint. This makes it a practical choice for systems with auxiliary heat strips, two-stage compressors, or dual-burner configurations commonly found in split systems and packaged units.

Key Features

• Two-stage control supports staged heating and cooling equipment
• 24-volt operation compatible with standard low-voltage HVAC systems
• Temperature setpoint range of 50 to 90 degrees F
• 4-degree F differential for consistent temperature control
• Manual changeover between heating and cooling modes
• Rated for up to 85 percent RH indoor humidity environments

Compatibility

Designed as an OEM-style replacement two-stage thermostat for indoor low-voltage HVAC systems requiring 24-volt control.

Installation Notes

Installation should be performed by a licensed HVAC technician. Power down the system at the breaker before removing the existing thermostat or making any wiring connections. Mount the thermostat on an interior wall away from direct sunlight, drafts, and heat sources to ensure accurate temperature sensing. Verify that the system control board supports two-stage thermostat input before wiring.

Technical Specifications

• Stages: 2
• Voltage: 24 volts
• Temperature Range: 50 to 90 degrees F
• Temperature Differential: 4 degrees F
• Maximum Operating Humidity: 85 percent RH
• Changeover: Manual
• Application: Indoor

Standard Information

• Brand: SUN STAR HEATING PRODUCTS
• Manufacturer Part Number: 30348100