Best Of
Re: New, unused Peerless 63-04 Brooklyn/Queens area
I have put together many push nipple boilers. The only one I had a problem with was an HB SMITH model 2000 back in the 70s. One push nipple got crooked while being pulled together but we knew it wasn't going right so we backed off before any damage. Its like making on a threaded fitting you start it and you can teel if its not going right.
All the sections set on the floor with legs. One of the legs the casting was a little short on the leg so problems can happen. We got a new push nipple and lifted that section with a crowbar and it pulled right in.
The company I worked for did some work for Buderus. When they sold a CI boiler and it was going into the building with a Crane and not individual sections they would ship the sections to us to assemble in our shop.
We had 1 tech that used to oversee the assembly in the shop. The only time we had a problem was when he was out they had an inexperienced guy do it and it leaked.
Sounds like trouble but the rate of a failure is very low. Those boilers (the Buderus) had no legs on the middle sections just the front and back and they all had to be pulled together at the same time. Buderus used to ship a hydraulic assembly tool to use.
I never did one of those myself.
Re: New refrigerants Epa 608
And yet those are running similar pressures to R22 systems that used to last 30+ years.
I've heard people blame the high pressure of 410A, obviously that's not the case on an R290 system.
ChrisJ
Re: leaky sink trap connection
Pipe dope on the plastic/nylon gaskets, tighten hand-tight, and where plastic meets plastic. No leaks.
Intplm.
Re: Homart
A Sears brand...Hot water boiler? 180 is normal swt (supply water temperature). More pictures of each side & all the attached piping would help...mad dog
Re: New, unused Peerless 63-04 Brooklyn/Queens area
I don't see any difference between individual sections and a split block. If anything individual sections are easier IMHO.
With my experience with push nipples they either pull together or they don't. If they pull together your fine and if it doesn't pull together something is wrong and you will know it during assembly.
You basically clean the nipple ports and nipples put the sealer (lube) on them set them in place with a wood or rubber mallet or a hammer and a block of wood, make sure they are square line things up and pull together and pressure test.
Re: New refrigerants Epa 608
On line its readily available!
This whole Certification thing has become a farce!
pecmsg
Re: New refrigerants Epa 608
Your certification covers it but I would take a class on the 2 R2L refrigerants and the equipment.
HVACNUT
Re: Snowmelt PEX loop max length
The longer the loop, the more pump power you need. The 5/8 could be any of those lengths. If you need to go long distances from the manifold, 3/4" could be an option.
Keep the glycol below 50% to help the pump sizing.
A snowmelt sizing program would spell out all the size, pump requirement and supply temperature required.
All the sizing depends on how quickly you want to melt the snow.
The Uponor design manual takes you through all the steps for the design.
hot_rod
Re: Snowmelt PEX loop max length
There are a lot of things to consider.
Snowmelt most often operates between 15-35 deg. This is the temp range in which snow falls.
What % age of snow times and clearance do you want melting to occur. Class 1-2-or 3
There is very little difference in heat delivery between tube size 1/2" to 5/8" or 5/8" to 3'4" foot for foot. Heat delivered (BTUs) is dependent on Supply Water Temp and flow. Pex size has more to do with pumping power and tube length. Are you using Pex A-B-C? Use Pex A with an O2 barrier. I use 3/4" tube for increased flow and low pumping power.
You are going to use Anti-freeze, what % age? Anti-freeze increases the need for more pumping power at a given flow.
How is it to be installed? Sand Bed, Concrete, Asphalt, etc. Pavers going to be the finish?
How is the Pex laid out? Serpentine, Counter-flow. I always use a Counter-flow pattern. What about Pex spacing? Too long a loop length—too long and you could run out heat energy before hot water reached the end of the loop. 250' , I would think is the max.
What are you going to use (insulation) to prevent back and side heat loss?
Is it going to be an automatic of manual sys?
Re: Snowmelt PEX loop max length
As with anything have a proper heatloss. done.
Uponor's C-dam manual has all that included. Shorter lengths are better.
The contractor should have all that done.
kcopp