Question about A.O. Smith BTH-500A Commercial Tank Type Water Heater, Natural Gas, 130 Gallon, Cyclone Xi, High Eff

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AO SMITH CYCLONE XI MANUAL - A.O. Smith BTH-500A Commercial Tank Type Water Heater, Natural Gas, 130 Gallon, Cyclone Xi, High Eff

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Heater during ignition is making load banging sound out vent pipe threw roof from exaust what could be wrong


sounds as though it might possibly not be igniting first time , it is ignitiong the gas that is present but not staying lit, You should probably have it looked at / serviced. If you are in the UK it is usual to have a regular service to catch such things. A recommendation from friends for a good boiler technician might be worth taking advantage of .

Jul 04, 2015 | A.O. Smith BTH-400A BTH-400A 130 Gallon...

1 Answer

Loud popping noise upon start up.


if it is gas have a gas fitter look at it

May 23, 2015 | A.O. Smith BTH-199 BTH-199 100 Gallon...

1 Answer

Loud backfiring noise upon start up.


the main jet is open before the pizo starts
for safety sake have a gas fitter look at it

May 23, 2015 | A.O. Smith BTH-199 BTH-199 100 Gallon...

1 Answer

Model # bth199100 low igniter current


Usually requires igniter replacement.
Here is a link to the troubleshooting page - says call service but details possible remedys...
Smith Vertex 100 Power Vent DV Series 120 Instruction Manual Fault And...

Jan 08, 2015 | AO Smith A.o. Smith Bth-199 Commercial...

1 Answer

Installation: Electrical Requirements


13Mb product manual is a big download ... electrical info page 13:
http://waterheatertimer.org/pdf/AO-Smith-Cyclone-gas-water-heater.pdf
http://waterheatertimer.org/pdf/AO-Smith-Cyclone-electrical-connection.pdf
Recommended both water heaters require dedicated single-phase 15 amp 120Volt line with correct polarity. This is 14 gauge wire and 15 amp breaker for each unit.
I would put both water heaters on surge protection and GFCI. Most water heaters are not protected from surge, and manual says line noise can affect operation of water heater.
Your local code would say if GFCI is required. Install GFCI breaker in main panel if required.
Install inline surge protector: Or add main breaker box protection.
http://www.amazon.com/dp/B003AU0Z48/?tag=waterheaterti-20

AO Smith service handbooks:
http://www.hotwater.com/resources/product-literature/service-handbooks/
Add a comment and say what you discover

May 17, 2013 | A.O. Smith BTH-199 BTH-199 100 Gallon...

1 Answer

AO Smith BTH 500 ignitor keeps burning out,is my electronic control the problem?


I would report problem to AO Smith.
Also ask question on pro water heater forum
http://www.thetankatwaterheaterrescue.com/forums/forum3/

AO Smith service handbooks:
http://www.hotwater.com/resources/product-literature/service-handbooks/
If the igniter is not turning off, then that would explain early failure, and it would be caused by the control chipset

Mar 21, 2013 | A.O. Smith BTH-500A BTH-500A 130 Gallon...

1 Answer

On A.O. Smith water heater model BTH 199 100 where is the heat sensor rod located ?


Parts list:
http://www.hotwater.com/lit/partslists/197728-004.pdf
Flame rod, flame sensor sits next to igniter inside combustion chamber. This can be cleaned with sandpaper. Do not touch with fingers. Purpose of flame rod is to detect whether ignition has caused actual, sustainable fire inside the combustion chamber.
If sensor is bad, or no ignition is detected after 2-3 attempts, then 'no ignition' error is given.
Bad gas control valve, bad-or-dirty flame rod-sensor, low gas pressure, misaligned rod, dirty combustion parts, etc

Service handbook:
http://www.hotwater.com/lit/training/316586.pdf
High gas pressure spikes can daMAGE gas control valve p7

Product manual:
http://www.hotwater.com/lit/im/com_gas/197727.pdf
Word-search for 'failure'
Low gas pressure. p14 and p54
1-3 trials before declaring 'ignition failure. p48
bad flame sensor (clean with sandpaper) #10 p58
unit must be grounded (check outlet with circuit analyzer) #12 p58
Sequence flow chart p59
Rough starts = ignition failure p60
Troubleshoot chart - ignition failure p62

Mar 12, 2013 | A.O. Smith BTH-199 BTH-199 100 Gallon...

1 Answer

Igniter is not working


Try removing the igniter. (First turn the heater off) There is a heat sensor rod on the igniter. If it is blackened use fine sand paper or a scotch brite pad and clean it so it is shiney. reinstall the igniter (turn the heater back on) and try it. If that doesn't work the igniter may be defective and will require replacement. I have a smaller A.O. Smith water heater and that little trick has saved me three service calls. Good luck.

Nov 20, 2012 | A.O. Smith BTH-199 BTH-199 100 Gallon...

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