vapor system short cycling

Steamhead (in transit)

the boiler's output may still be a bit more than the radiation you have. Try down-firing just a bit.

<A HREF="http://www.heatinghelp.com/getListed.cfm?id=367&Step=30">To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"</A>

Bildo

short cycling on pressure

I installed a new boiler on a 2 pipe vapor system. There was a hoffman loop which I took out and installed a Gorton # 2 and two Gorton # 1's. One main is 66 feet long 2 1/2 ". And one main is about 75 feet 2". The vaporstat is set to cut out at 12 oz. and the diff is set at 6. I got a call today that once everything gets hot it will short cycle on pressure. On for 30 sec then off on pressure. What should it be set at? I waas going to set the cut out at 14OZ and the diff at 12OZ. Would that cure the problem or Do I need more venting? THanks.

Steamhead (in transit)

If everything is hot when it starts to short-cycle

then all the air is out. Maybe the firing rate is a bit too high.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Bildo

I measured all of the radiation

and sized te boiler properly by the EDR. It's a gas boiler. If I set it up with a wider differential would that make it stay on and off longer?

Boilerpro_3

Or ...

> the boiler's output may still be a bit more than

> the radiation you have. Try down-firing just a

> bit.

>

> _A

> HREF="http://www.heatinghelp.com/getListed.cfm?id=

> 367&Step=30"_To Learn More About This

> Professional, Click Here to Visit Their Ad in

> "Find A Professional"_/A_

Boilerpro_3

Or ...

If it is a orifice type vapor system, then you need to mulitply your calculated EDR by .8 to arrive at the EDR the boiler actually sees.

Boilerpro

Boilerpro_3

Or ...

If it is a orifice type vapor system, then you need to mulitply your calculated EDR by .8 to arrive at the EDR the boiler actually sees.

Boilerpro

Mad Dog_2

Are you sure you cleaned it enough?

Mad Dog

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Bildo

probably not

I probably didn't clean it enough because it was getting late and I am going back for an inspection anyway. I skimmed it and replaced all of the wet returns. Hopefully thats it. I'm going back tommorow and i'll skim some more.