Best Of
Re: Does any company make slip tees in propress/copper press standard?
I know on most sweat copper couplings or tees you can file out the stop and slide it up the tube.
I don’t think the hub design of typical press fitting allows that?
hot_rod
Re: Adding thermal purge to oil boiler with 2 zones
What type of boiler? If a standard gas or oil fired, there are aquastats that offer zone purging. If a mod con boiler, maybe there's something in the setup.
HVACNUT
Re: Advice for replacing a Bell & Gossett 2-1/2" with a Grundfos
You could try replacing the steel pipe clamps on the piping with "cushy clamps".
They have a rubber inserts for vibration and allow expansion.
JUGHNE
Re: Best way to handle short cycling on boiler
I would not replace it either.
A few things IMO;
I wonder about the boiler's wiring, with the damper cycling like that. Commonly the thermostat controls the damper, the damper when fully open (via the dampers 'End Switch') controls the burner. The pressuretrol is electrically often on the burner side of the damper.
What make and model boiler do you have ?
If it were my oversized boiler (one method) I would add a delay timer, so once the pressuretrol trips on pressure (system pretty much full of steam) the burner restart is delayed (in minutes) beyond the point of the pressure drop and the pressuretrol resets. To me burning fuel just to build pressure is a waste and needlessly cycling the equipment is also a waste.
Another method is Duty Cycle or PWM (Pulse Width Modulation) control of the burner beyond the obvious Duty Cycle control of the thermostat. Adding a temperature sensor can enhance this method. With this method the burner never runs long enough to build significant pressure.
The difficulty with the timer method (as least the way I see it) there is not a perfect delay timer that is easy to install and works as desired on most any system. And it seems most folks are not really good with electrical stuff in general.
109A_5
Re: Troubleshooting No Ignition
Geez a guy makes one stray comment. All right, I’ll follow the current.
nickr
Re: Adding thermal purge to oil boiler with 2 zones
I use a delay off timer to purge my boiler, while the zone calls it goes thru the timer and then after the zone call is ended the timer maintains power to the pump. My pump is in series with an inline open on temp rise aquastat so once the temp is below setpoint it stops purging.
Re: Adding C Wire with Hydrostat 3250 Plus and external transformer
OK, OK, I see this as an easy change. Just working with the information given. Zone valve type would help. If given new information I'll try to work with that.
Original IMO;
Changed to this, easy if the extra wire through the building already exists.
109A_5
Re: No water in the boiler
I don't think there is a leak.
You had NO water.
a) There is a leak
b) Someone drained the boiler
pecmsg
Re: Slantfin VHS-150 EP Aquastat
it’s been working exactly as it should today.
The only reason i think the old owners dealt with it for a while was on the sellers disclosure the amount of propane they stated they went through in a year was shockingly high. That coupled with the fact that they put in some hacky exhaust vent from that mechanicals room into the garage with the only purpose i can think of being to get the excessive hot air out of the room from the boiler running all the time. My cold water was warm as well as any water in the pipes would warm up due to the room being 85-90 all the time.
Besides saving all the money on the propane and not having to buy a new aquastat, it was exciting turning on the cold water in my kitchen sink and the water actually being cold.
gcubed
Re: Slantfin VHS-150 EP Aquastat
Also just FYI since you have an L8148E aquastat. It is a known issue that the solder joints that connect the relay (that the screw fell into) to the circuit board go bad with time and use. Since your aquastat appears to only control the burner, the symptoms would be no burner operation or intermittent burner operation. If you can solder the solder joints can be repaired. A Plumber or HVAC Tech will always change the whole aquastat.
109A_5