Heating Help

t-stat

@ May 23, 2013 2:50 PM in help upgrading 2 wire system thermostat!

Typical heating/cooling single stage t-stat wiring is  R (red) = 24volts  with Rh and Rc jumpered on 1 transformer systems.      W (white) = heating.   Y (yellow) =cooling.   G (green) = indoor fan.     and in alot of cases there will be a common wire which could be black, blue or brown  this would need to be verified. Not sure how your oper. heating and cooling with 2 wires.    do you have a sep. cooling t-stat or control ?   probably time to call a pro.

cooling towers

@ May 23, 2013 11:05 AM in cooling towers

First of all you should get some tech. info on cooling towers to go over. When I was an hydronics instructor we would spend over 2 wks on towers. I would pull the strainer baskets and inspect them. Recommend cleaning strainers every 3 months on an open tower. Also doing a chemical cleaning of risers periodically. There is a misconception that opening valve on wye strainer will flush strainer, you need to pull the basket. I would also verify accuracy of guages and replace as needed. You should have full flow from downcomer pipe on top of tower if your system is filled correctly, give it some time to equalize. if you overfill it will run out overfill pipe, it may take some time to get the tower loop filled correctly.  Guage pressure will depend on piping, strainer condition, bldg height, individual units and pumps. Need to get that fill line fixed and check the float. if you get a hold of the tower rep. they may help, BAC and Marley usually have good factory support.    This would have been good in the commercial category

lwco

@ May 21, 2013 3:29 PM in low water cut-off

sorry I meant the same or tighter as commercial

lwco

@ May 21, 2013 3:27 PM in low water cut-off

that scares me, residential should have the same or tighter code requiements in your area

lwco

@ May 20, 2013 4:37 PM in low water cut-off

Curious, what boiler/mechanical inspector allowed this install without one.

non condensibles

@ May 16, 2013 10:12 AM in r22 condenser

Reclaim refrigerant, triple evacuate and weigh in correct charge. A digital scale is a great tool to have.

ductulator

@ May 12, 2013 5:08 PM in duct sizing

I would invest in a Trane Ductulator, about $15.00 on line, than I use roughly 400 cfm per ton

Taco

@ May 7, 2013 11:18 AM in Taco

Thanks Dan very interesting to watch

amtrol

@ April 26, 2013 10:12 AM in Expansion tank replacement with a what is that?

The triangle valve is a Amtrol (Fill - trol) valve, it is an auto feed valve with a built in check valve, see Amtrols website to see how it works. Your system was designed using this so leave it in. Changing the tank safely  will most likely require lowering system press.. and water temp. remember if the diaphram in the tank has leaked the tank will be extremely heavy.   Look up past posts on replacing ex-pansion tanks, remember the hardest part of this job may be to getting the air out of the system after the tank has been replaced. This is a job for a pro

pipe

@ April 25, 2013 5:22 PM in Hot Water Recirculation pipe erosion

Looks like the pipe was not reamed, are there any leaks at the solder joints

fitter

@ April 25, 2013 9:30 AM in National Plumber Day!

Thank you Rod.   I would recommend any young person today to consider a career as a U.A. plumber or steamfitter, It was a great career for me.

piping

@ April 24, 2013 9:59 AM in What's Wrong

This is about the 4th picture i have seen on the wall where the expansion tank is not supported

high ambient

@ April 22, 2013 10:36 AM in ok here is the answer early

I have run into situations in the past where I would use a water sprinkler next to condensing unit to lower the cond. temp until a could get the indoor heat load down

insulation

@ April 21, 2013 1:06 PM in uninsulated steam pipe

I would insulate the pipe with 2 inch fiberglass and than build a small insulated chase aruond the pipe

gpm

@ April 19, 2013 9:48 AM in gpm thru 2\" pipe at 50 psi

look up  water flow through hose - Engineering Tool Box   there is a curve.

boiler

@ April 8, 2013 11:40 AM in Condensation/feed tank problem

Is the Peerless boiler a new replacement for an old boiler, the feed tank may have been installed to compensate for smaller water content of the Peerless boiler. I have seen some fitters install horizontal tanks at boiler water level to do the same thing, but alot of these installs are not to code. . As everyone else said , you need to find and repair or replace all system traps, If just 1 is leaking steam you will still have problems.  As pumpguy said dont put a F&T Trap ahead of tank on 2 pipe system.  F&T traps are good for removing condensate from large risers and steam coils to name a few applications.

piping

@ April 8, 2013 11:06 AM in wicked water hammer and boiling in pipes

Uninsulated piping have a heat loss 5 times greater than insulated pipes, uninsulated pipes can cause a mid-cycle water hammer problem that wasnt there when piping was insulated,  this is all in Dans book, Lost art of steam. In my exp. I also found uninsulated steam risers in bldgs can cause banging and ticking in piping

piping

@ April 8, 2013 10:36 AM in wicked water hammer and boiling in pipes

Dont forget to insulate all steam piping, uninsulated pipes can cause problems

banging

@ April 4, 2013 9:48 AM in steam radiator bags loudly when heating and cooling

the radiator valve looks pretty old, I would take the bonnet loose and see if the disc has broken down and is partially blocking steam/condensate

pipe dope

@ March 29, 2013 7:36 PM in Threaded connections

For fittings i never want to leak i would use expando or grip.   Our you at the Hall of Justice, I worked for a co. that did alot of work there, i knew Manee , he retired also Knew Renee and Tom.     Retired fitter Rick

heat pump

@ March 29, 2013 1:45 PM in Rheem High Pressure Trips

Paul , just curious what you found out on your high press trip problem

hvac

@ March 25, 2013 9:47 AM in Integrated HVAC

You should think about installing a HRV ( heat recovery ) if your going all out in this proposed system