Joined on February 3, 2007
Last Post on April 12, 2014
@ April 12, 2014 11:36 AM in lowering steam pressure in a industrial buildingHopefully they are involving a mech.engineer From my experience working with high press. steam, smaller diameter piping sometimes could be used. lowering the main press. with the same size piping may be a concern.
@ April 9, 2014 6:49 PM in New install FurnaceBetter to balance air flow at the plenum using vents or diffusers for balancing can cause velocity noise. although most residential installs don't use these, I would put them in if I was doing a new install.
@ April 9, 2014 10:17 AM in New install FurnaceI would install these dampers on the plenum ahead of the runs easy install
@ April 9, 2014 9:47 AM in Looking for residential installer in Denver, ColoradoPasterkamp Heating or AMS mechanical
@ April 7, 2014 11:03 AM in New install FurnaceI recommend a manual damper installed on the supply plenum for each run for balancing purposes, you can buy a ductulator on line to help you size all duct.
@ March 26, 2014 7:14 PM in Removing and loosening painted radiator condensate trap coversGet the paint off like Jamie said. For the radiator trap I would use my pocket knife and cut the old paint around where the cap assy screws to body ( where gloves ) than use a large socket and breaker bar, tighten first (clockwise) this will help break any paint and rust loose. than loosen using large pipe wrench for backup. For the F&T trap a lot of paint removal and rust dissolver. You may consider replacing the entire F&T trap ( picture on right ) as a lot of the rebuild kits cost almost as much as a new trap.
@ March 19, 2014 6:59 PM in compressorSupco M501 is a good inexpensive meter for checking hermetic compressors. about $160.00 New hermetic compressors will usually show a insulation resistance value of 100 megs or higher, readings of 50 megs or less indicate either the winding insulation is deteriorating or the oil/refrig is contaminated, may be moisture in system. The first step if you get a low reading would be to clean up system (install oversize liquid drier ). If you still get a low reading I usually explain to the customer that the winding insulation is breaking down and that premature failure of compressor is inevitable. I have seen compressors run along time with low readings. This meter can also be used to check motors and transformers. If you are going to work on larger equip. a crank style meter will give you more options AmpProbe makes a good one they can run in the thousands
@ March 10, 2014 6:50 PM in fuel cellA friend called me from another state about a major hvac upgrade they are looking at doing to there church. One person at the church wanted to look into replacing the boiler and emergency generator with a fuel cell ? any input on this would be great. don't know any equip details at this time.
@ February 26, 2014 8:36 PM in Condensate drain trap question:Over the years I have seen hundreds of poorly installed and misunderstood cond. trap installs If the condensate pan is on the inlet side of the fan then a trap is needed or the static of the fan will not allow water to drain. Can you post a drawing of your system. the dimensions of the trap, especially in larger units depends on the air static of the system
@ February 20, 2014 6:17 PM in Waterlogged Compression tanksGo to the main wall jan. 9 2014 compession/exp tanks
@ February 20, 2014 6:06 PM in geothermal vs. airsourceWater furnace makes a good product and I believe they have engineering available
@ February 19, 2014 11:09 AM in geothermal vs. airsourceTwo interesting installs (1) A high end residential ground source heat pump job, In northern Ca with piping set in wells hundreds of feet deep, everthing looked to be installed and grouted correctly, the problem when the soil around the wells was moist the system worked ok, when the soil was dry the units would trip on high head press.in the cooling mode.
(2) A large software co in Silicon valley ca large heat pumps using a pond for the heat source, worked ok until the geese moved in, some of the goose poop ended up around the coils in the pond effecting the heat transfer.
@ January 22, 2014 6:59 PM in securityHas anyone had there e-mail hacked while on this site
@ January 15, 2014 4:35 PM in Dumb furnace questionIf you can access the supply plenum I would recommend installing balancing dampers , you can get round manual dampers online or Hercules supply in Denver should have them. You would need to disconnect the round duct or flex at the plenum than install damper
@ January 10, 2014 11:35 AM in compression/expansion tanksI agree with Mark, The benefit of the compression tank is that any air that may get into system from after any repairs will end up in tank if installed correctly. diaphram or bladder tanks do not afford this. Bell and Gosset makes a number of valves that shoud be installed on the compression tank, airtrol fitting, tank fitting and drain valve. I would normally have to drain the tank at least once during the heating season, and check the guage glass gaskets for leaks.
@ January 7, 2014 4:39 PM in Goodman electric furnaceFirst question would be why a cooling only unit next you need a t-stat that will cycle fan on in heating, Honeywell makes some T8600 ? hopefully you have a large KW heater and not just supplemental heat, also electric heat requires a large electrical service and separate disconnect. Might want to get a heat pump condensing unit reinstalled
@ January 6, 2014 10:19 AM in Help! Furnace only blowing cold airCheck for a dirty furnace filter or obstructed return air to furnace, Some older furnaces will cycle the fan on when the furnace goes off on high limit (return air temp gets to hot )
@ January 1, 2014 11:10 AM in HVAC Electrical Bard UnitTry San Francisco Switch gear 415-522-0762
@ December 26, 2013 6:27 PM in Help, 10"duct through 9" spacecheck to see about a oval duct fitting
@ December 24, 2013 12:54 PM in ChristmasMerry Christmas to everyone and their families. john 3:16