VR8300C4506/U Single Stage, 24 Vac, Step Opening, Standing Pilot. 3/4 x 3/4" Step rate 0.9" WC, Full Rate 3.5" WC

Part Number: VR8300C4506/U Brand: Resideo Technologies Inc

Single Stage, 24 Vac, Step Opening, Standing Pilot. 3/4 x 3/4" Step rate 0.9" WC, Full Rate 3.5" WC

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Does not ship to Virginia, United States

Combination gas control for use in 24 Vac gas-fired, standing pilot appliances with capacities from 30 to 300 cfh.
  • Control Includes Safety Shutoff, Manual Valve, Two Automatic Operators, Pressure Regulator and Pilot Adjustment.
  • Compact Size.
  • Provides Two Automatic Valves.
  • Solenoid Operated First Automatic Valve Opens on Thermostat Call for Heat, Closes When Call for Heat Ends.
  • Diaphragm-operated Second Automatic Valve Opens Under Control of Regulator; Closes if Gas or Power Supply is Interrupted.
  • Meets Codes Requiring Dual Safety Shut-Off.
  • Natural to LP and LP to Natural Conversion Kits Available for Standard and Slow Opening Gas Valves.
  • All Adjustments, Wiring Connections and Pilot Outlet are Accessible from Top of Control.
  • Adjustable Servo Regulator Effectively Maintains Almost Constant Gas Output Pressure Under Wide Fluctuations in Gas Supply Pressure.
  • Compatible with Eco Connector.
  • Lite-Rite: Off-Pilot-On, Lighting Sequence.



  • 5-3/8 in. high x 4-1/16 in. wide x 2-11/16 in. deep
  • 135 mm high x 104 mm wide x 69 mm deep


  • Two 3/4" x 1/2" reducer bushings


  • 0 to 90 degrees in any direction from the upright position of the gas control knob, including vertically.


  • 60 Hz

Approvals, Underwriters Laboratories Inc.

  • UL Component Recognized MCCZ2.MH5323

Approvals, Canadian Standards Association

  • CSA International: 112395

Approvals, Australian Gas Association

  • 4717

Electrical Connections

  • 1/4 in. quick-connect male terminals


  • 24 Vac

Operating Temperature Range

  • 0 °F to 175 °F
  • -18 °C to +79 °C

Body Pattern

  • Straight-through with flange

Opening Characteristics

  • Standard Opening

Pressure Ratings

  • 1/2 psi
  • 3.5 kPa

Inlet/Outlet Size

  • 3/4 in. x 3/4 in.

Pilot Gas Outlet

  • Compression fitting for 1/4 in. OD tubing

Pressure Tapping

  • 1/8 in. NPT with plug

Type of Fuel

  • Natural


  • At 1 in. wc p.d. - 200,000 BTUh: 30,000 BTUh minimum: 300,000 BTUh maximum Natural Gas

Pressure Regulator

  • Standard

Pressure Regulator Setpoint

  • Step Setting: 0.9 in. WC non-adjustable; Full Rate: 3.5 in. wc
  • Full Rate: 0.87 kPa; Step Setting: 0.22 kPa

Ignition Type

  • Standing Pilot

  • Single Stage

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