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YKK makes a lot of different grades of zippers. Veto does not appear to be using the highest quality one, although they have no qualms about having the highest priced bags. They should rethink...

I am curious about the combustion chamber compensation port on the bottom of these valves. 0820637 Since fireplaces don't have a combustion chamber, are there some brands of heaters where they are...

You either have a hot water boiler or a steam boiler not both. There is no such thing. Steam boilers do not have circulator pumps. A hot water boiler should never operate at a temperature that...

Can anyone direct me to a page or chart from a reputable source for finding the average life expectancy of split systems, furnaces, boilers, and heat pumps? I just need something simple for...

I don't know if its standard everywhere, but here the meters have an 1/8" pipe plug about 1" above the union on the outlet line. The regulator is ahead of the meter. The gas co. here has no problem...

There should be little change of pressure at the meter/pressure regulator unless it is overloaded or defective. Most regulators here only fluctuate about .5" under a load. Are you reading the...

Yeah, these big companies get this stuff approved and then we find out years later it is unsafe. Kind of like aluminum wiring. Makes me not want to put my sticker on jobs for fear I'll get blamed...

Has anyone heard of this problem with flexible ss gas lines? I always hard-pipe gas lines, but have seen a lot of these on water heaters.
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They have a MicroBlue coated fins for better water drainage, I don't know if it prevents formicary corrosion, that is the big problem now. I would like to hear from someone who has been using them....

Any restriction or blockage in system would give low suction. I'm not sure what you mean by "efficiency test", but if you closed a valve like the suction service valve or even a receiver outlet valve...

Thanks, never did.

I don't have the energy to read all 136 posts, can anyone give me a condensed version of the answers :-)

I've only seen s.s. in laboratory equipment. The tin plated copper or all aluminum is supposed to prevent the formicary corrosion problem.

A big contractor here in town has used Staybrite for years, I have many of his customers after the food acids eat holes in it and they lose all their product. It is a low temp brazing material about...

Thanks for the link Mark, I have been watching threads about increasing failure rates on coils and felt it was due to the manufacturers' design. Now I can see where there are other causes that are...

LOL You must have ESP and ESPN :)

Thanks guys, I knew the conversion, I just didn't read his statement carefully enough:o Very nice sensors though, I wish I'd heard about them a few years ago.

[QUOTE=chillerfreak;1819968]variable primary flow is what is replacing constant primary/variable secondary systems. cost savings....one less pump and less piping as well as energy savings on reduced...

I haven't done much refigeration in years but I am pretty sure taking the cap off the cpr valve shouldn't make a difference in pressures. Also it should be set at the highest pressure the compressor...

I guess I don't understand the system, aren't you concerned the gpm's are so far away from design? Is this a variable speed chiller?

I worked at a facility that had a a similar problem about 6 years ago and the Trane tech came up with the same solution. I can't remember if it was on a RTAA, but we did replace one about that time....

I am thinking you are right about different ground potentials, and that is why the shields are only connected at one end to prevent ground loop currents. Were the shields completely isolated from...

My customer isn't my boss. He is just someone wanting a service. Some are honest, some are theives, some are just plain ignorant. It's my job to sort them out and keep the good ones.
Bad...

I believe R-22 will be around many years in it's modified version as sold by Icor as Nu-22 and Dupont as MO59?. There is a facility here in town with a dozen R-22 units less than 10 years old and...

Get a second opinion and pricing. Did he say the compressor was shot? The compressor could have serious damage,or not, running all day w/o refrig. What kind of warranty is in effect on this one...