Trinity (Fenwal) ignition module.....................(Starch)

Glenn Harrison_2

Here's my thoughts:

1. Since the Fenwell module you replaced is not on the approved Honeywell Cross reference, you are accepting all liability of any future malfunctions that could occur pertaining to the ignition sequence.

2. If the old module only has a 6 second warm up time I have to figure the igniter warms up that quickly, and by powering it for 32 Seconds, you are going to dramatically shorten it's life expectancy. A lot of these new igniter's are designed for quick warm-up/quick cool down. That six seconds is also obviously programmed into the burner motor ramp up time and could have an effect on proper and clean ignition later on.

That module was a good temporary to get them by put I would get the OEM Fenwell Module and install it.

Just my 2¢.

Joe Brix

Something to ponder?

I had a no heat recently due to moisture damaging the ignition module. The auto vent decided to drip, and of course the water found its way to the module!

I did not have the exact Fenwal replacement available at the time, as it was a weekend call. I installed a Honeywell S8910U ignition control, instead. The main difference between the two modules was the prepurge time (0 seconds/Fenwal and 32 seconds/Honeywell) and the ignitor warmup time (6 seconds/Fenwal and 34 seconds/Honeywell). What I observed, of course, was a longer ignition time as a result.

The boiler ramped up to full modulation speed by the time the control allowed the gas valve to open, but it lit off smoothly. It very shortly then cycled down to proper firing rate, based on water temperature.

I'm curious to know everyone's opinion about leaving the Honeywell control installed. The only downside I can think of is that the igniter life may be shortened due to being "hot" longer, but I don't even know if this will be the case.

Thoughts?

Starch

lchmb

one other thought

I agree with Glenn and one other thought will be your customer will observe the difference and alway's wonder if it's right. The minute something break's, "it's your fault". I would order the fenwel and be done with it.