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Is it better to vent out a side wall or thru the chimney?
So I'm in MA and plan to replace oil-fired boiler with natural gas. I have a 1.5 story Cape with a half-finished basement and heated garage. Radiators in ground floor and some baseboards. 1952...
View ArticleBoiler won’t shut off despite reaching desired thermostat temperature
Hi everyone, My knowledge about my one pipe boiler and steam system is minimal. I recently had a gas fireplace installed, in the process the workers installing the gas line from piping that goes to my...
View ArticleVacuum breaker compatible with a Honeywell trv thermostatic radiator valve?
I am looking for the vacuum breaker compatible with a Honeywell trv thermostatic radiator valve. Can anyone point me to the right product?
View ArticleAir fuel ratio issue on Navien NCB-240.
A customer of mine has a persistent issue that seems hard to diagnose. It seems that every time that there is a significant time interval between the last call and the current call for heat or hot...
View ArticleProblem with our Amana 80 SSE gas furnace - behaving unpredictably.
Please help! Sometimes, with thermostat set to heat, inducer motor starts up, igniter turns on and burners fire up normally, blower starts up and furnace runs for quite a while blowing warm air,...
View ArticleWeil McLain sensor replacement question
Going to replace my two supply and return sensors on the ultra 155 series 3 boiler. Do I need to use a sealant or just screw them in. Was getting errors on both sensors and now they just say none...
View ArticleMunchkin 80M F09 error
Hi All, I have a Munchkin 80M unit that is getting a F09 error. Prior to getting this error, the fan inducer was replaced. After the fan was replaced, this error started to appear. Since then, we have...
View ArticleTaco zone zvc406 valve system flashing yellow light for nest thermostats zones
Hello, I have a weird issue going on with my heating system. I have a 6 zone valve gas heating system with steam boiler and baseboard heats/radiators across the house. Recently, I have started to...
View ArticleHow much derate from 3.5inches down to 1.2 inches
With a standard atmospheric boiler running high fire at 3.5 inches Manifold pressure, what is the input when set at 1.2 inches manifold pressure for low fire. I know its somewhere between 60% and 65%...
View ArticleBuffer tank
Brief description.Converting from oil to gas.Upon renovation a few years ago split the second floor baseboard zone into four smaller ones, separate for each bedroom.Baseboard footage is about 50% more...
View ArticleBosch Greenstar Combi 151 not able to keep up
I got a bosch combi unit installed last year. I am having some trouble with it. It is not able to keep up on a cold day. I am wondering if it is related to any of the settings not set correctly. I...
View ArticleVR8304m Gas valve inop
How can I test it ? I have power and grd. And no pilot light lit
View ArticleGarage heater sizing
I have a garage that I want to heat. I have looked at the heat loss in a couple ways and get very different answers. When I look at volume and rise though various heater manufacturers', the...
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Must I make costly replacement of ONIX with PEX?
I have new a Laars Minitherm JV225NDISU2 natural gas forced hot water boiler with six zones of baseboard. When the previous owner added a kitchen and dining area in 2004 they added the sixth zone and...
View ArticleUnwanted Heat
Sometimes when the Master Bedroom (MBR) zone thermostat is not calling for heat, the zone gets heat anyway. It does not get as hot as it would if the thermostat were calling, but it is warmer than I...
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Loud knocking in a Taco 222 Universal Flochek valve
Hi, We have a 28 year old Burnham I-6 system, and have lived in our house for 6 years. It's hot water with radiators. This year for the first time there is a steady and loud knocking that seems to be...
View ArticleSingle pipe steam pipe radiator heating question.
Hey I have a single pipe steam heat in the house I just purchased. It has a new Dunkirk(psb-30) boiler installed. I have two radiators one on the first floor and one on the second that don’t really get...
View ArticleMulti-zone heating
Hi all, I am experiencing an issue with my heating ever since I had my boiler "flushed" to remove air pockets. My setup is as follows, I have four heating zones. Zone 1 = Basement, Zone 2 = 1st floor,...
View ArticleBuderus GB142 Revision Set Air Vent Replacement
The air vent on my GB142 is leaking. I just ordered it, and wanted to ask if there's anything I need to do before replacing the part. Do I need to drain anything? The replacement picture looks like...
View ArticleNew TSTAT, nothing works now
Hi all. Changed my TSTAT yesterday and the new one didn't turn on, so I switched back to the old TSTAT and that didn't turn on either. I triple checked and it's wired correctly, but still nothing -...
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