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Post Purdge Controls Dangerous?
Al Gregory
Member Posts: 260
I had a customer I installed a new Weil Mclain Gold Oil boiler with a Carlin Burner into a Campanelli Type house (boiler in the kitchen, slab house) call me at 2 AM Fri morning. She said the house smelled really bad and that the boiler was making noises like it was going to explode. The boiler was a year and a half old and I figured it plugged up. Most of those houses have problems because the boiler is next to the stove and the air gates plug up. I told her to shut it off and she said she already did an hour ago because she wanted to wait till morning. So I said fine I will get up and drive over. I got there 30 mins later. The boiler was already off 90 mins by now.. The temp gauge was pegged the house smelled like burnt wires. I knew what happened. The red wire on the 602001010 RevB Carlin control shorted and the burner became a runaway bypassing the high limit and thermostat. IMO These controls are dangerous and in my opinion should be removed. The wholesaler told me that the RevB was a bad control. Well thanks for sending out a notice Carlin. A whole family could have died while sitting at their kitchen table the other night waiting for me to get there while their boiler was dancing on the kitchen floor..
If we use these controls with the red wire for Post Purdge it should become code that the red wire should have to pass through a manual reset high limit control.
I will never use another one. I will just replace them with regular 4 wire controls. In my opinion Carlin needs to issue a recall or send out a warning about these controls,
If we use these controls with the red wire for Post Purdge it should become code that the red wire should have to pass through a manual reset high limit control.
I will never use another one. I will just replace them with regular 4 wire controls. In my opinion Carlin needs to issue a recall or send out a warning about these controls,
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Comments
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Al
They did, LAST YEAR. All my inventory was pulled, and replaced with Rev.C controls. Where were you? Carlin went to great lengths to correct they're proplem, once they saw it and finally admitted to it. Was this a direct vent install? I don't understand why the 60200 control is used on anything other than direct vent. And then, I probably would use a different direct vent burner.
Jed0 -
post purge
no question about it a run away boiler with post purge is bad news... i also only use post purge on direct vent, many oem manuals call for a x safety controll for the hot leg of post purge.. i feel the honeywell r 7184p is the best controll to use,, the current revision is suppose to shut burner down if flame is detected during purge cycle...0 -
I never recieved anything and was never told by the supplier.0 -
Why didn't the oil valve close?
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I've never been a fan
of direct power going to the oil burner . We've had more than a few instances of runaway Riello burners with the electronic air damper . We don't use a secondary high limit for them , but I do wire the whole system through the LWCO . It's better than nothing I guess .
The Carlin control is also very succeptible to the tiniest amount of water , so we try not to use them in tight fit situations . Fortunately it just don't run when that happens .
I gotta say we've had zero problems with the revamped Beckett and post purge control . Excellent piece of hardware .0
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