an intermittent spark ignition system is observed to react to a thermostat's call for heat in the following sequence: spark ignition turns on; pilot is lit; no additional action occurs. what is the problem?

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20-12-2022
Physics

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an intermittent spark ignition system is observed to react to a thermostat's call for heat in the following sequence: spark ignition turns on; pilot is lit; no additional action occurs. what is the problem?

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kjuli1766 kjuli1766 · Answer 1 · 2022-12-24T08:35:02+01:00

The problem is adequate flame recognition signal was not generated.

Resideo combi gas valves with intermittent ignition are used in gas-burning appliances that use natural gas. These reliable controls include safety shutoffs, manual valves, two automatic controls, pressure regulators, and pilot adjustments. Intermittent pilot ignition is an electronic system that uses electrodes to ignite the pilot gas.

For atmospheric burners, typical manifold gas pressure ranges are 3 to 5 inches for natural gas and 10 to 12 inches for propane. The pressure should be checked and adjusted if necessary. Higher pressures than recommended can cause overheating and damage to the heating unit.

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