Using a solenoid valve for boiler loop

Using a solenoid valve for boiler loop

PostBy: stoker-man On: Thu Sep 18, 2008 6:05 am

Does anybody here use a normally open, solenoid-controlled valve in one of your large heating loops to allow the boiler to circulate by gravity in the event of an electrical outage?

If so, where did you buy it and how has it performed?
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Using a solenoid valve for boiler loop

PostBy: Blackdiamonddoug On: Thu Sep 18, 2008 9:16 am

Hi Stoker Man
I used one on a comercial application it works fine as long as it is rated for the temperature.
What size pipe is the pipe?
I can look in my bin in the cellar see if I have one.
Doug
Blackdiamonddoug
 
Stove/Furnace Make: axemen 260 rebuilt by Matt
Stove/Furnace Model: stoker AA 260

Re: Using a solenoid valve for boiler loop

PostBy: Yanche On: Thu Sep 18, 2008 10:10 am

Does the solenoid coil have to be powered all the time to keep the valve in it's normal position?
Yanche
 
Stoker Coal Boiler: Alternate Heating Systems S-130
Coal Size/Type: Anthracite Pea


Re: Using a solenoid valve for boiler loop

PostBy: stoker-man On: Thu Sep 18, 2008 10:43 am

It must be powered all the time so that if the power goes off, it opens to allow gravity flow. There would be one valve, maybe two and the zone valve would be left manually open. My pipes are 3/4".
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Using a solenoid valve for boiler loop

PostBy: Freddy On: Thu Sep 18, 2008 12:46 pm

I tried one once for a different application in my house. They might be OK in a factory, but it hummed so loud we couldn't stand it. It resonated through the whole house. I used it for exactly 24 hours and decided to do without.

If there's a power outage go hand open a flow check. Also, it's not as good as the theory. Unless you have large pipes and planned on it heating by gravity, it's really not going to work all that well. Before I spent any money, I'd turn off the circulator, open the flow check and see if it actually heats.
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: Using a solenoid valve for boiler loop

PostBy: Blackdiamonddoug On: Thu Sep 18, 2008 1:19 pm

stoker
Ill look in my cellar to night for a NO power to close SV that 3/4 inch or larger.
Our buddy from maine has a point some SV do hum ( I Think its because the don't know the words)LOL

BBD
Blackdiamonddoug
 
Stove/Furnace Make: axemen 260 rebuilt by Matt
Stove/Furnace Model: stoker AA 260

Re: Using a solenoid valve for boiler loop

PostBy: stoker-man On: Thu Sep 18, 2008 3:41 pm

He has a good point about the humming. The problem is that if I would fill the firebox and then leave and have a rare electrical outage..............
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Using a solenoid valve for boiler loop

PostBy: Freddy On: Thu Sep 18, 2008 6:51 pm

stoker-man wrote:The problem is that if I would fill the firebox and then leave and have a rare electrical outage..............


Welllll.... will the air inlet should shut when the boiler gets to high limit? If that isn't enough to keep the heat from going over 230.... it'll relieve some heat from the T&P valve.

The normally open solonoid controlled valves are not cheap.... how about spending that money on a UPS to run things for a while if the power goes out?
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: Using a solenoid valve for boiler loop

PostBy: stoker-man On: Thu Sep 18, 2008 9:36 pm

What's that?
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Using a solenoid valve for boiler loop

PostBy: djackman On: Fri Sep 19, 2008 2:38 am

I"m interested in this subject myself and here is what I've found:

Honeywell states for a common zone valve (V8043 series):

"Valves are designed for normal cycling , not continuously energized operations."
https://customer.honeywell.com/Techlit/ ... 10938B.pdf

However, there is no duty cycle listed on the spec sheet.

Taco's valves (both motorized and thermal drive) do not say anything about duty cycle on their spec sheets.
http://www.taco-hvac.com/en/library.html#
djackman
 
Stove/Furnace Make: 1980 vintage Tarm
Stove/Furnace Model: FT22 (aka 202) installed!

Re: Using a solenoid valve for boiler loop

PostBy: Freddy On: Fri Sep 19, 2008 5:00 am

A UPS... an unimteruptable power supply. Basically, it's some batteries in a box with some computer parts. It keeps the batteries charged and if the power fails, it automatically takes over....until the batteries die. You'd have to calculate the power needed and decide how long you want it to stay running.

http://www.ultraproducts.com makes them for cumputers. I don't know....maybe this idea isn't so hot...all depends on the power neing used and length of time you want. This UPS way might get expensive fast.
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: Using a solenoid valve for boiler loop

PostBy: stoker-man On: Fri Sep 19, 2008 5:51 am

Maybe a 12V valve, powered by a car battery? Getting interesting.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Using a solenoid valve for boiler loop

PostBy: Blackdiamonddoug On: Fri Sep 19, 2008 8:05 am

Stoker
PM your address I have a 1 inch normally open 120 vac to close Sv for you.
Black Diamond Doug
Blackdiamonddoug
 
Stove/Furnace Make: axemen 260 rebuilt by Matt
Stove/Furnace Model: stoker AA 260

Re: Using a solenoid valve for boiler loop

PostBy: coaledsweat On: Fri Sep 19, 2008 9:17 am

If you are on a single zone, this may work.... poorly. If you have multiple zones w/valves, it won't work at all. Some zone valves have a manual overide that allow you to open them in the event of a power failure but may be toasted when the power comes back on, so check out what you have first.

You may want to look for a small generator or a powerful UPS, heating a home designed for hydronic heat with thermosiphon is a losing proposition, the pipes won't freeze but you may. ;)
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Re: Using a solenoid valve for boiler loop

PostBy: Blackdiamonddoug On: Fri Sep 19, 2008 9:35 am

stoker
Had a box going today so I sent it to Matt's it show arrive on Tuesday.
Good luck
Black diamond Doug
Blackdiamonddoug
 
Stove/Furnace Make: axemen 260 rebuilt by Matt
Stove/Furnace Model: stoker AA 260