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Provide electronic control of direct spark ignition systems, with external spark transformers, used on gas-fired furnaces, boilers, conversion burners and other heating appliances.


  • Controls ignition sequence and gas control operation in direct spark ignition systems.
  • Control separate 120 Vac spark generator that provides high voltage potential for main burner ignition.
  • Lockout after one trial for ignition if main burner fails to ignite.
  • Reset from thermostat after lockout. Use separate electrodes for spark ignition and flame sensing.
  • Use any 24 Vac combination gas control designed for direct spark applications and rated at 2.0A or less.

Product Specifications

Dimensions (in.)
5 1/4 in. high x 4 1/16 in. wide x 1 15/16 in. long
Dimensions (mm)
133 mm high x 103 mm wide x 49 mm deep
Item Type
Electrical Ratings
24 Vac
60 Hz
Approvals, Canadian Standards Association
Design Certified
Flame Failure Response Time (sec)
2.0 sec. @ 2.5 microamp
Ambient Temperature Range (C)
-40 C to +79 C
Ambient Temperature Range (F)
-40 F to +175 F
Ignition System Type
Direct Spark Ignition
Ignition Sequence
Single trial for main burner ignition (then shut down and lockout)
Typical Gas Control
VR8205, VR8305
Type of Gas
Natural or LP
Flame Sense
Two Rod
Ignition Source
External (120 VAC powered) High Voltage Spark Generator
Ignition Trials To Lockout
Lockout Timing
4 sec.
Ignition Trial Time (sec)
4 sec.
Maximum Valve Load @ 24 Vac (Amps)
Flame Failure Re-ignition Time (sec)
0.8 sec. maximum
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