Heating Help

boiler vent

@ April 5, 2012 3:28 PM in boiler venting

thanks tim i figured the mechanical company twenty years ago knew what the rules were and did it the correct way. thanks for the information

boiler venting

@ April 4, 2012 12:49 PM in boiler venting

tim i  wrote a while ago about a argument a co-worker and i had about venting the boilers which have been operating ok for 20+  years, he thinks there should be barometric dampers. i say they have been working leave "em alone.  They are rite 1.5 million btu. water tube boilers with webster powerburners  hot water system. photos show they connect to same flu.

having trouble

@ January 28, 2012 12:02 PM in Having trouble balancing WattsRadiant manifolds... showing 0 GPM

post some pictures of boiler and piping and of manifolds and mark supply and returns  would be helpful

radiant heat

@ January 24, 2012 6:24 PM in radiant heat loss because of pex placement?

i don,t  know if any one has asked this question but what is the setting of the trinity boiler hot water supply?  is it set as a low temp condensing boiler setting of 130 or so, or is  it at a 1 80 or so boiler loop temp. my thinking is if it is set a  130 or so temp then the Rmb  will not have enough for the mix even at full speed.

vfd brush

@ February 22, 2011 1:23 PM in Pump couplings and VFD's

this company  has a brush kit for vfd bearing problems and their product has worked well for us.  www.est-aegis.com

install manual

@ January 21, 2011 12:25 PM in Simple System, Impossible Problem.

from the install manual from munchkin they show pumping into the boiler and primary secondary  on all the installs

wine cellar

@ January 10, 2011 4:16 PM in Wine Cellar Cooling System

when i worked in napa valley wine country for a local hvac contractor years ago.we would install refrigeration systems for large and small wine cellars. The temperatures were in the refrigerating range so use refrigeration equip. also design it to have a low td across the evap coil. which means the coil will be larger than a normal evap coil. the reason is you are trying to maintain high humidity  if you have corked wine bottles. smaller evap coils with high temp differentials suck a lot of moisture out of the air thus drying out your room.  the florists have very large evap coils in there flower cases to keep the flowers moist. 

thanks

@ November 22, 2010 11:40 AM in barometric damper

thanks for the info. 
I'll have to check on the the manufactures specs.

barometric damper

@ November 20, 2010 4:56 PM in barometric damper

tim could you give me a reason for or against a barometric damper on a rite boiler with a webster power burner.  My understanding is the damper keeps the flue(  inche of W.C. )from getting to much draft by opening at what ever it is set at .   The boilers have been in use for more than 20 years  with out  any dampers and don't see m to have any issues.

reverse return

@ April 14, 2010 12:00 AM in Laying of Radiant pipe

i like using the reverse return  it is easy for me to lay out and  the bends are a little easier to make

turbocor

@ April 5, 2010 8:38 PM in VFD and Scroll compressors

I did not know that, learn something new every day. Here are some pictures of a conversion. also you can go to youtube and watch one in action. just type turbocor.

turbocor

@ April 5, 2010 9:25 AM in VFD and Scroll compressors

i believe that mcquay  has a partnership deal on some of there models but danfos turbocor can be used as a retrofit on any centrifugal machine. I will post a picture later on today on the conversion

danfos

@ April 1, 2010 1:09 PM in VFD and Scroll compressors

danfos hs been busy in the vfd compressor field. Go to danfos site and look up turbocor oil less compressor. this is a centrifugal that has no bearings for the rotor  it rides in a magnetic field.  quiet as can be.  we had one of our chillers retro fitted with these compressors and the noise level is unbelivable. so quiet. plus the compressors being on  a vfd drive can go from almost nothing to full load with out the problems of running unloaded for a long time.

lead lag

@ March 28, 2010 8:01 PM in Lead/lag for central a/c

what type of cooling units do you have in the data center. Are they true data center cooling units like a liebert, data aire, ect.  that sit in the room or is it a built up system of commercial comfort cooling units.  some of the newer liebet systems can be connected together to do just what you described they call it teamwork mode. If it is a built up system  where the t-stat  is not built in to the unit then you could lead lag on  a 2 stage stat and a lead-lag switch  manually or on a timer

barber colman

@ March 12, 2010 6:44 PM in barber coleman 8000

yes i believe they are now invensys. the system we have is about 20 years old and we have been slowly changing to tac  floor by floor building by building. we have 14 buildings and about 1 million square feet of office space. and we are about  1/3 of the way to new  controls. but then the slow down hit and we have to keep the old stuff running. its been pretty stable for 20 years so we got our money's worth.

barber coleman 8000

@ March 9, 2010 11:06 PM in barber coleman 8000

i am looking for parts for barber coleman 8000  building control system.
host lan cards or gcm cards thanks. paul

knight boiler

@ October 30, 2009 5:56 PM in Non O2 bariier tubing and Lochinvar Knight

I installed  knight on a old poly system 2 and half years ago.  The old system would eat a hole in an expansion tank in less than a year.  I put all bronze pumps and  a enamel lined expansion tank in the new system with the knight. no steel or iron at all , Plus i put in a corrosion inhibiter  and check it when i do the yearly service.  no problems so far.  The other option was to put in a flatplate heat exchanger set up / or a taco x-block ( if the btu fits the x-block 70k btu i think) 
The lochinvar knight has been has been a great boiler. I have only installed 6 so far in the last four years but so far no problems.

lochinvar

@ July 16, 2009 11:55 PM in What is the problem with Giannoni heat exchangers?

sorry i should have said lochinvar sync boilers. old age is a drag. they are in a slc area building

knight lcommercial

@ July 16, 2009 11:39 PM in What is the problem with Giannoni heat exchangers?

here are a few pic of the new lochinvar shield 1.5 million mod con boiler in a leed certified building

fridge

@ July 4, 2009 10:17 PM in frig under 55F operation?

if i read this right you want to run your refridgerator in a garage/which will be below 55. The problem with running a frige in low ambiant conditions is that you loose capacity. The cond is probably a coil attached to the back of the fridge. in the refrigerant cycle you rely on the temp/pressure difference on the liquid side of the expansion device /txv captube ect. the colder the cond coil gets the less refrigerant goes through the metering device/ and you loose capacity. clear as mud.

glycol

@ June 26, 2009 2:38 PM in Effect of glycol on heat transfer in chilled water loop

if you have the capability on your building controls you can have the chilled water pump come on if the freeze stat trips and also open any valve to the air handler chilled water loop, we have it on our buildings in utah and it sounds as if you have about the same low temps.

vents

@ April 6, 2009 7:58 PM in stone rule - no auto vents in an ac exp tank?

is it a steel compression tank or is it a bladder expansion tank? We had nothing but touble when someone put auto vents on the boilers that had steel compression tanks the vents leaked and also made the tanks water log. the guy who put them on thought it had to have vents not knowing any better. when the boiler was down the last time, the water pressure in the system was down and the pumps where cavitating . water was pouring out of the float valves. i pulled all of the auto vents off. and tried to explain to the maint man not put them on.