Print

[tinfoilhat2020]

Hey guys want some advice.... I'm installing a new g-200 in a house we just moved into this weekend, what are everyone's thoughts on the proper way of Plumbing in a 20 plate exchanger to the domestic hot water tank?

all copper? unions on the dhw side? ball valves on dhw side?

i just wanto do it once and do it right.....

thanks

[mlappin]

I posted pictures on the Facebook thread.

Purge/flushing T’s on both sides of the flat plate, IE. boiler and DHW. dielectric unions, and a bypass valve on the DHW so in the off season your not running all your house water thru the flat plate and possible further gunking it up. Used a mono flo T on mine as per Slim. Did a bit of porting and polishing on mine with a die grinder before sweating it in, insides were kinda ugly.

[E Yoder]

I rarely have had issues with gunking up on the stove side, usually on very old cruddy units. Domestic side I had a need to flush on maybe 10% or less but cleanouts aren't a bad idea. I've run 10 years and never flushed on mine. Very much depends on water quality.
I haven't used the monoflo method, just sent it all through, but that depends on the main loop flow rate needed.
Counterflow of course. Mounting vertical is better. I use flat plates with Pex fittings instead of threads. Crimp the Pex directly on, never leaks. Copper is prettier.. ..

[mlappin]

I rarely have had issues with gunking up on the stove side, usually on very old cruddy units. Domestic side I had a need to flush on maybe 10% or less but cleanouts aren't a bad idea. I've run 10 years and never flushed on mine. Very much depends on water quality.
I haven't used the monoflo method, just sent it all through, but that depends on the main loop flow rate needed.
Counterflow of course. Mounting vertical is better. I use flat plates with Pex fittings instead of threads. Crimp the Pex directly on, never leaks. Copper is prettier.. ..

Like pointed out, depends on your water quality. Even our soft water will leave rust and lime stains. We have a well water tap at the kitchen sink, once in awhile I’ll take a 3/16” drill bit and run it thru the tip or it will clog clear shut with calcium/lime. Purge/flush valves aren’t cheap, but it ain’t cheap to have to redo a flat plate when it clogs shut. I figure if it can happen, it will happen to me, prevents being surprised when something fubars.

[E Yoder]

Yes, not disagreeing at all.
It's interesting how some areas have bad lime/clogging issues and some don't. One valley is a lime valley full of caves (and water heaters with blown elements ), next valley over is shale and no clogs. Once we cross over north into WV coal country out of the Allegeny ridge and valley system the lime stops.

[mlappin]

Yep, we really like our water straight from the well for drinking, is good with no rust (its all dissolved) or sulphur taste. Go a mile behind us and I can’t drink the neighbors water, tastes like match heads. When we used to unload hay there I’d take my own water in a thermos, drink too much of theirs and it’d make me sick. Ours is a hundred and ten feet deep, theirs is a hundred, go figure. A few towns over everybody has shallow wells (or did). Buddy there had a cottage on the lake, his well was actually in a cabinet in the mud room. Pulled the counter top and drove a new one using five foot sections and a electric jack hammer. Got water at 40 foot, his house was on a hill along the lake, told him basically he was drinking lake water.

[E Yoder]

Probably was healthier too. 

[heat550]

Is there a facebook group ?  and why doesn't outdoorfurnanceinfo show up on Tap a Talk app on android .
Just heads up Tap a talk is so awesome . Talk about knowledge pipe line of friends its crazy . I will always use this one
but I see some expanding potential there .   

Heat550

I always wanted to see a general group post titled Tangling with Dragons.  and we need Dragon slayer emoji