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check txv , warm up bulb, make sure evap is clean, if multistage all stages need to be calling. Is evap header piping correct.

the first co. with the leaking evap is a 30hbxb-hw, just added gas for now , not going to try and fix it till I hear back from First co. Cant believe the one year warranty. Everyone else is 5. ADP...

I have been finding a few leaking evap coils on First Co. Air handlers with hot water coils. These evaps are barely 4 years old. The warranty from first co. one year. First Co. = garbage . Any...

yes there is a bcm-eth device. web talk was a typo . The internet from the building goes to a 5 port ethernet switch on port one but that port led is not on and i cant connect to the internet from...

bcm-web version 1.1

went to a building today that has alerton webtalk 1. something. When I logged in only the outdoor air comes up. Everything else says waiting... no temps ever come up. I noticed on the ethernet...

Dectron Ds-182-43 Between the indoor unit and condenser on roof total charge is 225 pounds of 22 per circuit. One lost 225 and 2 lost 100 pounds. Fixed a bunch of leaks. each circuit must have 10...

I have a old supco micron guage, looking to upgrade been looking at a jb and infinicon . Any problems with these. The yellow jacket in the hard case looks nice but pricey.

has anybody changed just the head of a discharge bypass valve. Found one leaking on a Dectron unit very rusted from chlorine . It says it is removeable but it feels frozen on. I may just braze a new...

a thermistor, , lochinvar called me back on a sunday which is good, they said to turn the sensor and for some reason that did it , reset boiler running fine, going to pick up a couple tommrow.

Anybody have any issues with flue sensors part TST30011 on Lochinvar Knight Boilers. I have installed 2 boilers. One going for a year no problems. One is a month old and needs a flue sensor and maybe...

M#vrtoblmoopo1s S#ro2g97446 Ctrl DD01 Actu Blmo Does this vav require rover software to troubleshoot a flow sensor failure in Tracer Summit.
There is flow but reading 0 cfm on Summit. Could...

Went on a service call for relief valves blowing on 2 boilers. amtrol 90 expansion tank bladder bad full of water , water comes out of air port. Of course apartment owner wants qoute on exp tank ....

for flow reasons the indirect pump is best in the primary it seems for ease of installation being put in the secondary pump manifold with the other zone pumps i have seen piping diagrams both ways...

lochnivar knight squire indirect the boiler can control the boiler pump and the indirect pump in the primary but the indirect can also be put with the other 4 zones and the zone panel can run it...

pros and cons of installing the indirect pump in the primary loop vs the zoned secondary

What does everyone think about installing the indirect pump in the secondary loop vs in the primary boiler loop. Pros and cons

I have a customer who would like there Lochnivar Knight boiler cvpc vent pipe changed from a side sill plate vent to a up though the roof vertical vent.
The snow line is a problem even though the...

Any idea how much the suction elbow weighs on a york m # yta2b2b2-cge
s# mrp49767 comp M# ydtj-76. I have changed gaskets on a trane suction elbow, had to use gantry and remove purge. Also has shaft...

I should mention that if i turn off the breaker for comp one and start the chiller it still goes into fault 51 then start circuit 2 comp 3 and 4 which run fine. All comp ohm the same. I am thinking...

Carrier 1986 100 ton chiller air cooled 4 compressors 30gb100550/r697602
code 51. Quick test everything check outs ok. All compressor run in quick test. During normal startup comp one runs for 15...

Another tech I work with just put a heat pump in his house that runs till 36 deg outside then he runs oil. What does everbody think of running a heat pump in connecticut as first stage then...

on the tracer summit it just show question marks and comm loss for the dampers. I cycled power to the board the dampers are terminated at. I will have to dig allitle deeper.

I was browsing through a tracer summit site at a nursing home and found comm loss on about 10 wireless zone dampers. Found the controller for the dampers green lites are on. Input output board has...