Heating Help

RbI whining boiler

@ December 4, 2012 11:35 PM in Whining RBI 600 Dominator

Thanks for the info Mark. I think you nailed the problem diagnosing buildup inside the tubes. I feel that after 15 months some type of film or scale has bonded and is causing localized flashing. What are your thoughts on valveing off the boiler and circulating a cleaner through the HX and then flushing. Would it be better to go after the entire system?

RbI whining boiler

@ December 4, 2012 11:34 PM in Whining RBI 600 Dominator

Thanks for the info Mark. I think you nailed the problem diagnosing buildup inside the tubes. I feel that after 15 months some type of film or scale has bonded and is causing localized flashing. What are your thoughts on valveing off the boiler and circulating a cleaner through the HX and then flushing. Would it be better to go after the entire system?

Whining RBI 600 Dominator

@ December 3, 2012 8:07 AM in Whining RBI 600 Dominator

Yes , the boiler is piped in ridgid pie and is properly sized

Ridgid pipe

@ December 3, 2012 8:07 AM in Whining RBI 600 Dominator

Yes , the boiler is piped in ridgid pie and is properly sized

Ridgid pipe

@ December 3, 2012 8:07 AM in Whining RBI 600 Dominator

Yes , the boiler is piped in ridgid pie and is properly sized

Ridgid pipe

@ December 3, 2012 8:07 AM in Whining RBI 600 Dominator

Yes , the boiler is piped in ridgid pie and is properly sized

Ridgid pipe

@ December 3, 2012 8:07 AM in Whining RBI 600 Dominator

Yes , the boiler is piped in ridgid pie and is properly sized

Whining RBI 600 Dominator

@ December 2, 2012 11:05 PM in Whining RBI 600 Dominator

I have a copper boiler that has been in place for fifteen months . It provides both space heat as well as domestic hot water by way of a turbo max. The system is piped p/s through a low loss header. The gas pressures are correct and the flow rate is 20 degrees delta T across the heat exchanger at high fire. The system has not made up any water to speak of. The building is approx. twenty feet high to the top of the radiation. The system pressure is 18-20 PSI. Two weeks ago the boiler began to whine as it approached the set point of 175 degrees. The system did not appear to be dirty when the equipment was replaced. Why would this problem start now? I would appreciate any help

Lochinvar KBN 106 noise

@ October 9, 2012 9:23 PM in Lochinvar KBN 106 noise

I was contacted by a homeowner who has had a lot of banging in his system. The system pressure in within normal limits 12# and all combustion values are good. I heard the noise and isolated the system. I removed the top on the spiro vent as well as the screen and found small pieces of a nylon,Teflon, polymer or plastic material restricting flow. After cleaning it seemed to quiet down but not totally. I attempted to close the webstone flange isolation valves on the boiler pump and they would not move. I am wondering if these valves have failed and perhaps have lodged similar material in the heat exchanger reducing flow therefore causing the banging. Has anyone ever experienced a ball valve disintegrate and cause problems of this nature? I know that the pump is working properly and the right size. Is there an effective way to flush foreign matter from a gianonni heat exchanger?

Stiffening bracket

@ October 9, 2012 8:11 PM in Lochinvar knight boiler noise

The bracket fits inside the cabinet and tightens across the top of the heat exchanger. Give tech service a call at Lochinvar 1-800-722-2101 and they should be able to help you with this

Stiffening bracket

@ October 9, 2012 8:11 PM in Lochinvar knight boiler noise

The bracket fits inside the cabinet and tightens across the top of the heat exchanger. Give tech service a call at Lochinvar 1-800-722-2101 and they should be able to help you with this

Stiffening bracket

@ October 9, 2012 8:10 PM in Lochinvar knight boiler noise

The bracket fits inside the cabinet and tightens across the top of the heat exchanger. Give tech service a call at Lochinvar 1-800-722-2101 and they should be able to help you with this

Stiffening bracket

@ October 9, 2012 8:10 PM in Lochinvar knight boiler noise

The bracket fits inside the cabinet and tightens across the top of the heat exchanger. Give tech service a call at Lochinvar 1-800-722-2101 and they should be able to help you with this

Permeates anti seize

@ September 16, 2012 7:52 PM in Giannoni thread size

Thank's for the info . Given the heat generated around the heat exchangers on these mod-con boilers I am going to apply permatex to every thread.I have had enough of a scare. With the fine metric threads and the heat. I will add that to my tool bag .

Dave

@ September 13, 2012 10:55 PM in Giannoni thread size

Thank's for the info. I will add some chap stick to my tool kit

Dave

@ September 13, 2012 10:55 PM in Giannoni thread size

Thank's for the info. I will add some chap stick to my tool kit

Dave

@ September 13, 2012 8:55 AM in Giannoni thread size

Thank's for the info, I was able to determine that the thread size is an M6-1 that is a metric size 6 and 1thread per milliliter. I found a store that specializes in metric nuts & bolts.I also purchased a hex die which I can chase the threads with. I have found that several of these heat exchangers have some ragged threads which could cause a cross threading event. I also purchased some M6 stainless flange nuts. these are also handy to have on the truck in case some are lost.

Giannoni thread size

@ September 11, 2012 8:22 AM in Giannoni thread size

I was trying to find out what the Metric bolt size was for the Giannoni heat exchanger. I am referring to the stainless studs that surround the front opening where the front burner plate connects. I have serviced some wher the threads have been damaged and has made it difficult to tighten the nuts. I thought that if I had a hex die in my tool kit when servicing, i could dress the threads if there were a problem.

Giannoni thread size

@ September 11, 2012 8:22 AM in Giannoni thread size

I was trying to find out what the Metric bolt size was for the Giannoni heat exchanger. I am referring to the stainless studs that surround the front opening where the front burner plate connects. I have serviced some wher the threads have been damaged and has made it difficult to tighten the nuts. I thought that if I had a hex die in my tool kit when servicing, i could dress the threads if there were a problem.

Wilo presentation Denver

@ June 13, 2012 10:23 PM in Wilo presentation Denver

Thank's Mark Hunt for a good presentation on Wilo pumps and products today . The class was very informative.

Dave

@ June 4, 2012 11:16 PM in Water Htr Heats Dom HW and Hydronic System in same pipe

Dave

@ June 4, 2012 11:16 PM in Water Htr Heats Dom HW and Hydronic System in same pipe

Combined appliance applications are nothing new. Half of all Denver condominium & apartment complexes built in the last 20 years employ this type of system. And if the contaminated water was not enough, the fan coils have been known to burst due to elevated city water pressure and freezing due to direct expansion a/c coils in close proximity. I now refer to these systems as the California package. The life of the water heaters are drastically reduced due to the double duty. I have also noticed that the tenants and homeowners raise the temperature setting to the max during extreme cold conditions.