Best Of
Re: I get all the weird ones...
Tell them straight up, it's not going to work. They need to figure out a different strategy for material handling. Without knowing the process, I can't really offer suggestions. If they insist on trying to heat a 5k sf building with a 22x18 door hanging wide open, walk away. Working for idiots is financially risky and you won't get any satisfaction.
Re: Replacing cast iron radiator with smaller one
That's a gorgeous radiator. As dabrakeman said, remove, sandblast, powder coat....it needs to have its dignity and beauty showcased. Add a TRV if better temperature control. Mad Dog
Re: Evaluating Ductless Install Quotes
there’s a lot to do to install these. Get a bad contractor and throw the entire system out in a few years.
forget what you see on line as a price for equipment there is so much more that’s needed.
pecmsg
Re: Need help with new install of radiant with Buderus cast iron boiler
The proper 4-way setup with an actuator (mechanical actuator, not thermostatic) and outdoor reset, will aim to protect the boiler, and also aim for the correct mix outlet temp based on the outdoor temperature.
Let's do a hypthetical. Consider how much concrete you have on your floor. Now lets assume that you could heat your space to the exact indoor comfort you are looking for, while the outside temp is -10, by supplying a constant 110f supply to your manifold. Now let's fast forward to a day it is 35f outside. With a thermostatic mix valve you are still going to be supplying 110f water to your slab (a "dumb" miux valve just set by hand will also do this assuming the boiler setpoint remains constant, though it will eventually overheat even more), by the time the temp reaches the desired comfort level, the slab is hot, and the heat in the mass of your slab will continue transferring to the space thus over shooting the temperature you are looking for inside. Now let's say you only need 80f water on that 35f day, with a mechanically actuated mixing valve, and properly setup ODR control, you will be supplying the exact temp water needed to maintain the comfort level in your space. In theory you can match the load precisely and the system runs constantly, to maintain a perfect comfort level in the space.
These are features that are basically built in to modulating condensing boilers, no mix valve needed for those with a single temp system, and no worry of cool return water temp. and all of the above is ignoring the potential damage that overheating a big concrete slab can cause
GGross
Re: Need help with new install of radiant with Buderus cast iron boiler
I guess I just wasn't understanding the concept or advantage of the "dumb" 4 way vs going with a thermostatic valve like Kaos was showing in his setup. The thermostatic would keep a constant/regulated temp going to the system, It seems like with the 4 way it would fluctuate as the boiler cycles? Or does that just not matter if it was being controlled with ODR from the 256?
I like where we are heading though!
Re: Evaluating Ductless Install Quotes
And gas for the truck and truck insurance and and liability insurance and workers comp insurance and the time it take to put a quote together, run the office, do the billing and payroll and bookkeeping, truck repairs, employee training on you system. He also has to make a profit to stay in business
If you don't like the pricing don't complain to the contractor, Massachusetts is one of the most over regulated states in the country. i know, I have lived here 72 years.
Re: Evaluating Ductless Install Quotes
TL;DR: You're buying a lot more than the equipment.
I can't say much about your particular installers, but while it doesn't take much skill to slap a mini split on the wall & cash a check, a good install takes quite a bit of skill and experience. And not especially cheap tools. And insurance. And licensing. And training. And warranty.
ratio
Re: I get all the weird ones...
redesign the whole job,
keep the conveyor warm inside,
put the feed hopper outside, maybe under a shed roof if snow or rain matters, have a small opening for the feed conveyor, air curtain that,
neilc
Re: Thin Tube Steam/Hot water in Barre VT
i kind of lumped the inspection door and hanger iron and furnace cement in with the corrosion.
mattmia2
Re: I get all the weird ones...
I appreciate most of the comments guys. I did have a conversation with them verbal and through email, that discussed their expectations. I told them that no matter what we do that building wont maintain a satisfactory temp if any of the 3 overhead doors remain open for prolonged periods.
The best I can offer is at startup in the morning, the space will be 70 degrees, but within mins of the door opening, all bets are off. They understood and think they can manage as long as the conveyor and hydraulic oil get warmed up and rolling. I said keep it on through lunch then!
I dont think I will walk away from this job but I will have enough disclaimers and exceptions it'll make a lawyer wanna high five me!
Tom_133