Piping...what material should I use???

Piping...what material should I use???

PostBy: McGiever On: Tue Oct 18, 2011 1:00 pm

Looking for some direction in choosing what piping system materials to use for a new install of an old Axeman-Anderson 130.
Not necessarily looking for a one type does it all solution, as I have tools and skills to do any and all methods. I have what it takes for soldering copper, crimping pex, and cutting & threading pipe up to 2".
I am doing the air to h2o H/X in FA plenum arrangement as well as a indirect DHW heater.
The boiler will be in a remote building for ease of coal handling/storage.
This building is some 80' linear pipe distance away which includes a middle portion of it run 22' through the outdoor environment inside a "super" insulated pipe chase I would build. I am planning to include a means to isolate and drain the system portions that would have freeze dangers if that situation would ever come. And I will mention, that I have a whole house electric generator and auto transfer switch system on stand-by.

I see alot of total copper systems and wondered if that was done due, in large part, to the unavailability of threading screw pipe, nearly no *wrenching*, less prone to later leaks and whatever.
But, I see really old installs that used nearly all black screw pipe, perhaps it was the way of those times.

BTW...I have and did read Steigenthaler's book...great info in there.

My thoughts:

Plan A. Black pipe for the long haul...from boiler back to near primary loop...transition over to copper for the remaining.

Plan B. Pex-Al-Pex for the long haul...from boiler back to near primary loop...transition over to copper for the remaining.

Plan C. I'm open for suggestions.:idea: :?:

I would welcome your thoughts and input on how best to assemble this and do it "the last way first". :help:
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Piping...what material should I use???

PostBy: Sting On: Tue Oct 18, 2011 1:19 pm

Plan A

but I am a threaded pipe sort of guy :roll:
Sting
 
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG

Re: Piping...what material should I use???

PostBy: Rob R. On: Tue Oct 18, 2011 2:02 pm

Option "A". Threaded pipe is a cost-effective way to move a lot of btu's without an overly powerful pump. Use copper wher it makes sense.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy


Re: Piping...what material should I use???

PostBy: Freddy On: Tue Oct 18, 2011 2:30 pm

Black iron, but copper around the valves & pumps.
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: Piping...what material should I use???

PostBy: Yanche On: Tue Oct 18, 2011 3:57 pm

I would use metal pipe over PEX. Then steel pipe sized no smaller than one pipe size less the boiler tappings. Transition to copper where it's just easier to sweat pipe rather than thread short pieces. Think hard about what you want in your insulated conduit. I added two PVC electrical conduits, a potable PVC water line and a telephone line. Consider ports at the pump inlet and outlet to measure differential pressure. Knowing this plus the pump curve allows you to calculate delivered BTU/hr. This suggestion only applies to engineers. :-)
Yanche
 
Stoker Coal Boiler: Alternate Heating Systems S-130
Coal Size/Type: Anthracite Pea

Re: Piping...what material should I use???

PostBy: EarthWindandFire On: Thu Oct 20, 2011 7:13 pm

This suggestion only applies to engineers.


Or us aspiring engineers!
EarthWindandFire
 
Hot Air Coal Stoker Furnace: Leisure Line Lil' Heater.
Other Heating: Oil Furnace and Kerosene Heaters.

Re: Piping...what material should I use???

PostBy: steamup On: Tue Oct 25, 2011 7:47 am

Pex has temperature limitations. Ok to use and the cheapest/easiest method if you keep within those limits.

Copper was the prefered choice due to labor savings but might as well be on the precious metals exchange now.

I have switched to black steel on 1" and up for my prefered piping material. Keeping a couple of runs of nipple assortments of close through 6" on hand to do the offsets and connections makes life easier.
steamup
 
Stoker Coal Boiler: Axeman-Anderson AA-130, Keystoker K-6
Hand Fed Coal Boiler: HS Tarm 502 Wood/Coal/Oil
Coal Size/Type: pea, buck, rice