Originally Posted by
Jerry Peck
Michael,
Correct, but I always thought that was a strange name as its purpose is to help create a vortex spiral of hot combustion by-products so it goes up the center flue better. Otherwise, there could be turbulence created in the flue, causing a 'boiling up' effect in the air, reducing the efficiency of the upward flow.
At least that's what I learned many years ago (Bob H. will correct me if this is incorrect
).
My understanding is the intention is to improve efficiency by increasing heat transfer from the exhaust gases to the surrounding material, for example:
"The water heater contains a turbulator in each firetube, which increases flue gas velocity against the tube wall. This increased velocity does two things. 1. Transfers more heat into the water thus reducing fuel cost. 2. Helps in maintaining a cleaner tube wall should combustion adjustment change (which can produce sooting",
pp 12 here:
http://www.hubbellheaters.com/pdf/ModelDFOM.pdf
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Tabulators in residential hot water heaters usually hang by to small "ears", and are sometimes dislodged during shipping or installation, so you can see this on a brand new heater(!)
Here's my verbiage:
Observation: The flue baffel (turbulator) at the hot water heater has become dislodged and has fallen on to the burners below.
Analysis: A missing or damaged flue baffle can affect the efficiency of the water heater and produce unsafe operation. If the water heater is otherwise undamaged, a qualified service person may be able to remove the damaged flue baffle and install a new one. If they cannot, the water heater will have to be replaced. If replacement is required, this will be a substantial expense.
Recommendation: Have a qualified and insured plumber or HVAC contractor repair or replace the water heater as required.