PRV not to be used on coal boiler

PRV not to be used on coal boiler

PostBy: crazy4coal On: Tue Jan 31, 2012 6:14 pm

Just picked up a new Watts M1 prv for my boiler and in reading the yellow tag that is attached noticed that it is not to be used on coal or wood fired boilers having an uncontrolled BTU heat output. What PRV should be used for wood and coal units? 30# is 30# right?
crazy4coal
 
Stove/Furnace Make: buderus
Stove/Furnace Model: logana

Re: PRV not to be used on coal boiler

PostBy: McGiever On: Tue Jan 31, 2012 6:25 pm

I don't know what one you need to use for coal.

30 #'s at a big enough capacity to handle the volume of a run away solid fuel boiler.

But one rated to at least 500,000 bth/hr might ought to work. :)

I smell a liability lawyer. :idea:
Last edited by McGiever on Tue Jan 31, 2012 6:30 pm, edited 1 time in total.
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: PRV not to be used on coal boiler

PostBy: crazy4coal On: Tue Jan 31, 2012 6:29 pm

This one is rated at 510,000 btu an hr
crazy4coal
 
Stove/Furnace Make: buderus
Stove/Furnace Model: logana


Re: PRV not to be used on coal boiler

PostBy: McGiever On: Tue Jan 31, 2012 6:33 pm

Do you have uncontrolled btu output?
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: PRV not to be used on coal boiler

PostBy: crazy4coal On: Tue Jan 31, 2012 6:36 pm

Hand fired boiler with a samson draft control
crazy4coal
 
Stove/Furnace Make: buderus
Stove/Furnace Model: logana

Re: PRV not to be used on coal boiler

PostBy: steamup On: Wed Feb 01, 2012 8:40 am

No doubt legal mumbo jumbo.

Someone had a problem somewhere and blamed the relief valve.

Hand fired equipment can be easily overfired.

Just make sure the relief valve has 2 to 3 times the max rated capacity of the hand fired equipment. That is usually not a problem with residential equipment.
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

Re: PRV not to be used on coal boiler

PostBy: crazy4coal On: Wed Feb 01, 2012 5:32 pm

Thanks, I thought it was alot of BS. Iwas in the supply house today and asked about the disclaimer and the guts pulled some other sizes off the shelf and all had the same thing on them. Maybe they want a the valves with the weights hanging on a chain. More weight , more pressure! or just wire it closed...LOL
crazy4coal
 
Stove/Furnace Make: buderus
Stove/Furnace Model: logana