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I recently installed my first buderus GC124 gas boiler. The aquastat is a honeywell L7148F. This aquastat doesn't have a low limit. I realize that this boiler is a cold start but wouldn't it make...

One is a single speed which came with the boiler and the other is the 3 speed. I'm not sure which one is on the mono system. I have the speed set to "2" on the variable speed circ.

I did replace the circulators with new Grundfoss circs. with built-in flow check

I recently did an oil to gas conversion boiler changeout. The existing piping is as follows. Boiler is heating first floor only (1200 ft/2). 2 zones because addition had been done a few years...

I recently went to a call which the homeowner said that the furnace wasn't running long enough to satisfy the t-stat. I tested all safety controls and gas valve. Everything tested ok. At first,...

I recently did a boiler installation, conversion from oil to gas. The home had previously had gas but hadn't been used for quite some time. When I had the plumber come in to run the new gas lines...

It's amazing what homeowners will do to there heating systems trying to hook up to a generator when the power goes out. I'd like to hear some stories if anyone has any.

Thanks Baldloonie

Hi Baldloonie,
I've been posting regularly in HVACTalk for 3+ years. I didn't realize that I was posting in the wrong forum. I've never been asked to apply for pro membership before. What does...

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Anyone have experience with a Rheem plus 90 upright furnace with an IFC (integrated furnace control) board? The unit is 10 yrs. old. On a call for heat the inducer fan and pre-purge go thru they're...

Do you mean modular? No it isn't

I have a 2000ft/2 ranch witha Rheem 90+ (105k input/97k output) forced air system. I'd like to finish part of my basement, roughly 13x26 (338 ft/2) and add heat by tapping off of my existing supply...

I have a buderus boiler with carlin burner. It was installed two years ago. During summertime use (indirect water heater) it runs fine. The problem is when the colder weather begins. It fires up...

Hi everyone!
I'm new at installing Energy Saver Hi-Velocity Systems. Why does the manufacturer insist on putting the access ports & sightglass at the evaporator end of the system. I'm use to seeing...

Carrier 5 ton with scroll compressor. Suctionline pressure was 40 PSI, Liquid Line Pressure was 200 PSI. Superheat 4 deg. Subcool 2 deg.

We recently did a service call for a local club in our area.The call was for not enough cold air coming from the vents. We put our gauges on the system and they had no superheat or subcooling. We...

My question concerns using a Taco 1 zone switching relay with a 8148 control on a 2 zone heating system. Is it possible to use these two controls together? It seems like when the zone that is being...

My question for the day is why do you not see more oil lines run overhead as opposed to being buried in concrete? Seems to me it would be easier and cheaper time wise to do it this way.

This is for the H/O who asked what the drip leg is for. It's to keep any rocks, limbs, and Sunamis that may find their way to your appliance.

I recently got a call from a customer who wants to add an additional radiator to the 3rd floor of his home. The only way to do this in his situation is to tee off the 2nd floor radiator directly...

Thanks for your imput. My initial feeling was to go with the indirect.

I'm currently quoting a boiler for a community development block grant and the spec calls for a boiler with a tankless coil and a 30 gal. super-stor on the side. Is there a real cost savings or...

Does anybody know the state code for Massachusetts concerning oil tanks? Someone at FW Webb said that tanks with the oil line coming from the side of the tank is illegal in Mass, it has to be coming...

I recently received a call from a customer complaining of having no mixing valve on her tankless coil. What I found was two boilers in this home with one having a mixing valve and the other piped...