Honeywell VR8345M-4302 Universal 24 Vac with Standard Opening, Intermittent/Direct Ignition Gas Valve

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The SmartValve® System Controls combine gas flow control and electronic intermittent pilot sequencing functions into a single unit. This product family offers several different intermittent pilot sequences for a wide range of applications. The specific application of the SmartValve System is the responsibility of the appliance manufacturer. They are directly compatible with the Q3450 or Q3480 Intermittent Pilot burners used with the original controls on the appliance.


  • Suitable for a wide range of gas-fired appliances including residential furnaces, roof-top furnaces, residential boilers, unit heaters, infrared heaters, space heaters and commercial cooking units.
  • Ignition sequence includes timed trial for ignition.

Product Specifications

Dimensions (in.) 3.2 in. wide x 4.9 in. high x 4.1 in.long
Dimensions (mm) 81 mm wide x124 mm high x 104 mm long.
Includes Natural to LP Conversion Kit
Extension Harness
Mounting 0 to 90 degrees in any direction from the upright position of the gas control knob, including vertically.
Electrical Ratings 24 Vac
Frequency 50 Hz; 60 Hz
Approvals, Canadian Standards Association CSA International: 112395
Tradeline Value Universal
Flame Failure Response Time (sec) 1.6 sec @ 3 µA
PrePurge None
Ambient Temperature Range (F) -40 F to +175 F
Ambient Temperature Range (C) -40 C to +79 C
Ignition System Type Intermittent Hot Surface Pilot Ignition
Ignition Sequence Intermittent Pilot
Type of Gas Natural (LP with included conversion kit)
Flame Sense HSI
Ignition Source Pilot
Ignition Trials To Lockout continuous retry
Ignition Trial Time (sec) 90 sec
Typical Ignition Hardware Q3450; Q3480
Body Pattern Straight-through
Opening Characteristics Standard
Pressure Regulator Setting (psi) 3.5 in. wc
Pressure Regulator Setting (kPa) 0.87 kPa
Pressure Ratings (psi) 1/2 psi
Pressure Ratings (kPa) 3.5 kPa
Inlet/Outlet Size (in.) 1/2 in. NPT x 1/2 in. NPT
Pilot Gas Outlet Yes
Capacity (ft³/hr) Maximum at 1 in. P.D.--150 ft³/hr; Maximum--200 ft³/hr; Minimum--20 ft³/hr
Capacity (m³/hr) Maximum at 1 in. P.D.--4.2 m³/hr; Maximum--5.7 m³/hr; Minimum--0.6 m³/hr
Pressure Tapping 1/8 in. - NPT


Needs to be installed by experienced licensed professional. Failure to follow instructions carefully can result in injury or cause damage to the product. Explosion hazard with risk of serious injury or death if installed improperly. After installation is complete, check out operation as provided in the instructions. Acr4sale is not responsible for how the product is installed.

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