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This test procedure consists of three tests. The first test should be the ignitor spark test. The second test is a secondary coil resistance test. The third test consists of an input current test. The following is a step by step procedure to perform these tests. It is important that all three of these tests [...]

  Direct Vent Issues: With the introduction of direct vent equipment, a variety of installation and service issues are being confronted. Primary among these are cross contamination and cold combustion air. On 12/26/02, we issued a Technical Service Bulletin addressing the problem of cross contamination. This is most often seen with concentric terminations (one penetration [...]

The increased use of direct vent appliances in the past five years has brought with it a variety of challenges/problems for the heating industry. A direct vent appliance uses neither a chimney nor a power venter. Flue gases are vented directly through the sidewall of the building using the burner to provide the necessary draft. [...]

In a technical bulletin published by another burner manufacturer an explanation of the wiring colors for pre/post purge cad cell controls was given. That bulletin stated that the limit wire on the control was "commonly red" and the L1 power was "commonly black". I feel it is IMPERATIVE that I correct that statement to avoid [...]

Did you ever wonder why many of the largest cast iron boiler manufacturers in the country are making pre/post purge, interrupted duty ignition cad cell controls STANDARD on their oil fired residential boilers? These controls offer micro-processor based operating systems, pre-purge, post-purge, interrupted duty ignition, fifteen second safety timings, alarm contacts, diagnostic LED lights, serviceman [...]