Hydrotherm 02-1554 Gas Valve

The Hydrotherm 02-1554 Gas Valve is a critical combustion control component engineered for high-performance natural gas hydronic systems. Designed specifically for Hydrotherm MR and VGA boilers, this valve ensures precise fuel regulation and consistent manifold pressure. Operating on a standard 24V AC circuit, it maintains a factory-calibrated 3.5" WC (Water Column) output, which is essential for stable flame characteristics and efficient heat exchange. The unit features 3/4" NPT inlet and outlet connections, providing the flow capacity necessary for residential and light commercial boiler applications.

For technicians performing a gas valve replacement, the 02-1554 is an OEM Hydrotherm part that integrates seamlessly with existing electronic ignition controls. Its robust internal diaphragm and solenoid design are built to handle the cycling demands of high-efficiency hydronic heating systems. By utilizing this genuine Hydrotherm boiler part, contractors can ensure exact HVAC part compatibility, maintaining the original equipment’s safety profile and operational specifications without the risks associated with generic alternatives.

Key Benefits:

• OEM Precision: Specifically calibrated for Hydrotherm MR and VGA series boilers to ensure optimal combustion.
• Standard Integration: Features a 24V coil for easy wiring into standard HVAC control transformers.
• High Flow Capacity: The 3/4" gas valve sizing supports higher BTU inputs required for large-scale hydronic heating.
• Reliable Regulation: Maintains a steady 3.5" WC natural gas pressure for consistent burner performance.
• Durable Construction: Built with high-grade metal components to withstand high-cycle boiler environments.

Common Questions:

Can I use this valve for Liquid Propane (LP) applications?
No, the 02-1554 is factory-set for natural gas at 3.5" WC. Using this valve with LP requires a specific conversion kit or a dedicated LP valve to prevent hazardous over-firing.

Is this valve compatible with standing pilot systems?
This model is designed for use with electronic ignition systems. Always check your boiler’s wiring diagram to ensure the 24V signal matches the valve's solenoid requirements.

What are the symptoms of a failing 02-1554 gas valve?
Common indicators include the burner failing to ignite despite a call for heat, erratic manifold pressures, or the valve failing to close completely, which can lead to delayed ignition or "booming" sounds.

Does this valve include a built-in pressure regulator?
Yes, it features an integral regulator that steps down incoming line pressure to the required 3.5" WC for the burner manifold.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.