Overview
The Honeywell VR8300A-4045 is a continuous pilot combination gas control valve engineered for standing pilot gas-fired appliances including furnaces, boilers, and similar heating equipment. Operating at 24 VAC, this dual automatic valve combines safety shutoff, manual valve control, two automatic operators, and an adjustable pressure regulator in a single integrated unit. The VR8300A-4045 is set for natural gas with a 3.5″ WC regulator setting and supports appliances with capacities between 30 and 300 CFH (approximately 225 MBH).
Key Features
- 24 VAC Control Voltage – Standard low-voltage operation compatible with most residential and light commercial HVAC systems
- Dual Automatic Operators – Safety shutoff and main operator for reliable valve sequencing
- Manual Shut-Off Valve – Allow technicians to manually control gas flow during service and maintenance
- 3.5″ WC Pressure Regulator – Factory set for natural gas with adjustable range from 3″ to 5″ WC
- Natural/LP Conversion Ready – All VR valves come set for natural gas but can be converted to LP gas
- Inlet and Outlet Pressure Taps – All VR valves have inlet and outlet pressure taps for system diagnostics
Technical Specifications
The VR8300A-4045 provides precise gas control and regulation for standing pilot appliances with the following verified specifications:
- Inlet/Outlet Size: 3/4″ NPT × 3/4″ NPT
- Control Voltage: 24 VAC
- Pilot Type: Standing pilot continuous
- Capacity Range: 30–300 CFH (approximately 225 MBH)
- Regulator Setting: 3.5″ WC (water column), adjustable 3″ to 5″ WC
- Operating Temperature Range: 0°F to +175°F [-18°C to +79°C]
- Pressure Rating: 1/2 PSI
- Compression Fittings: 1/4″ for pilot tubing
- Flow Characteristics: Standard opening
Typical Applications
The VR8300 continuous pilot dual automatic valve combination gas controls are used in gas-fired, standing pilot appliances and include safety shutoff, a manual valve, two automatic operators, and a pressure regulator. The VR8300A-4045 is commonly found in residential furnaces, boilers, unit heaters, and commercial space heaters requiring standing pilot ignition systems with moderate to high BTU ratings.
Compatibility & Replacements
Compatible With
- 24 VAC furnace control circuits and thermostats
- Standing pilot ignition systems
- Gas-fired heating appliances rated 30–300 CFH
- Honeywell thermostat control networks
- Direct replacement installations for compatible VR8300 series models
Replaces / Drop-In Replacement For
- VR8300M4406 Honeywell Resideo 24v Standing Pilot Gas Valve replaces old Honeywell part number VR8300A4045
- VR8300A4003, VR8300A4011, VR8300A4037, VR8300A4045, VR8300A4557, VR8300A4565 (direct series interchangeability within same size class)
Works With
- Honeywell thermostat systems and combustion control modules
- HVAC furnace control boards requiring 24 VAC pilot duty
- Field conversion kits for natural-to-LP fuel switching
- Standard gas appliance pressure gauges and diagnostic tools
