Heating Help

boileric

@ January 18, 2013 11:15 AM in BOILER SIZING...GAS , STEAM

whats the size of the old boiler, I ran into the same problem, I had to use size of old boiler and take in account that the old 1940 boiler had a side arm domestic water heater. I did put in a disclaimer in the bid

valves

@ January 17, 2013 6:19 PM in zone valve question

Not sure what style you have, the old WR zone valves had a stem assy that sat inside a valve body, after some time the stem would where allowing some flow through valve body causing overheating even though the zone was not calling for heat, One way to tell would be to isolate that zone by shutting it off with a gate or ball valve

duct

@ January 17, 2013 5:27 PM in electric duct heater

where does the duct go,  AHU ?  MA unit,   sometimes these would be installed to try to correct a miscalculation on original design or reheat of new zone that was added.

lock out

@ January 16, 2013 2:05 PM in Power Flame JR30A-12 locking out frequently

First thing   get an I.O.M. for burner.   what's it locking out on. may be a gas press. problem.  Pilot and rod can be cleaned.  You may need to pull the burner to check the diffuser plate. If your not familiar with this burner you may want to get a second set of eyes on it       pictures ?

sizing handbook

@ January 14, 2013 12:36 PM in venting to long

Look up Duravent.com

wall furnace

@ January 14, 2013 11:09 AM in looking to heat an in-law apartment

I posted a question a couple of wks ago about wall heaters,  they run $400.00- $700.00  you can get them in the 24mbh size. You will need to run a gas line and an oval flue inside wall,  really not that hard to install if your mechanicaly inclined.  Check out the Cozy heater web site.

mod.

@ January 13, 2013 12:03 PM in Improper Combustion - could it be too high gas pressure?

Get complete mod. and serial no.   or take a picture of the nameplates  If it is a sectional boiler you should have the flue passages between sections checked to eliminate that as a problem

mod. no

@ January 13, 2013 11:10 AM in Improper Combustion - could it be too high gas pressure?

Looked up mod. on burnham site  your no. does not come up.   I would have a boiler tech pull out the burner tray and look up inside for either a plugged heat exchanger or soot between boiler sections, not sure if old burnham boilers were cast iron sectional or a different style.

another reason

@ January 12, 2013 1:25 PM in Differential Bypass Valve ?

All low volume flow heating boilers (Teledyne Larrs, Raypac ) need continuous flow through the heat exchanger, flow should never be reduced below 30%.  Systems using zone valves,zone pumps or 3 way valves can experience reduced water flow through the boiler and high temp. rise across the boiler,  high temp. rise can cause condensing in 85% eff. boilers.  Installing a balancing valve between supply and return allows setting a constant flow across the boiler.

Installers

@ January 11, 2013 12:36 PM in High delta T, how to adjust it?

Ball valves should be used for on off oper. For balancing,  circut setters or globe style control valves are better. Than you can set up a flow meter and read flow rates.

DANGER

@ January 8, 2013 6:21 PM in Forced Air Furnace Issue - Troubleshooting and Identification

Do not operate CO is probably present

north beach

@ January 8, 2013 12:49 PM in vintage ad

I did a lot of work in that area, worked at 415 Jackson, 394 Pacific   I liked working in these old bldg's 

backflow

@ January 7, 2013 7:38 PM in Water feed valve leak issue from boiler

I would move this post to the Main Wall where more fitters and plumbers will see it.

wall furnace

@ January 7, 2013 10:54 AM in wall furnace

I will check all these things
Thanks Rick

training

@ January 6, 2013 6:58 PM in hydronics school

Bell&Gosset used to have good curriculum, also R.S.E.S has great training

cozy

@ January 5, 2013 6:33 PM in wall furnace

It is a cozy wall heater, it uses double wall oval pipe,  25mbh

wall furnace

@ January 5, 2013 10:42 AM in wall furnace

A friend of mine wants to install a wall furnace in a remodeled garage, at this point it is 1 big open rm 400 sq. ft  Option 1, the easiest,   mount heater on the inside of the outside wall. (closest to gas line )  Option 2 build a small interior wall in rm and install a dual wall heater.  Asking for opinions. I worked in the commercial side of the trade and am not familiar with wall heaters
Thanks Rick

clearly

@ January 4, 2013 2:28 PM in Why do I have two pressuretrols?

You got a better resolution  I see a white reflection

pressuretrol

@ January 4, 2013 11:43 AM in Why do I have two pressuretrols?

Most cities require an operating control and a high limit on commercial boilers. In your picture the control on the left looks like a honeywell PA404 style control, This could be the oper. control.  The control upper right could be a high limit, it would have a L in the part no. like L407---    the older limit controls had a metal reset button on the top of the control.  Also Peerless used to use a 2 stg, control

no trap

@ January 3, 2013 1:00 PM in Steam trap

Thanks Dan for the clarifiiation  looked like an old trap but the piping did not seem right

trap

@ January 3, 2013 10:54 AM in Steam trap

Take a temp. reading from inlet to outlet, if the temp is the same this would indicate a problem with the trap, it can be replaced with a Hoffman F&T trap. there would be extensive repiping

leak

@ January 3, 2013 10:47 AM in System loses pressure slowly?

Your relief valve may be dribbling, if you have a diaphram type expansion tank check the air press (use a tire guage ) should be at least 12 psig, for most small systems, the fitting is underneath the big plastic nut, if you get any water the diaphram has ruptured. If the tank is ok could be the relief valve, also look around system for leaking pump flanges, fittings or press. guages