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Joined on March 4, 2011

Last Post on February 18, 2014

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Caleffi hand pump question

@ February 18, 2014 12:59 AM in Caleffi hand pump question

Has anyone found an adapter that will allow a standard garden hose to be connected to the outlet side of the pump?

Less then half.

@ November 4, 2013 3:35 PM in New Solar DHW System for NW School

Please explain that.  Other than the flat plates needing a beefier mounting system one would think the rest of the system would be a wash.

check the burner

@ November 4, 2013 3:20 PM in Knight boiler problems

Check the burner cylinder holes to see if they are clogged.  The cylinder has dozens of small holes around it.  They are pinhole size and may need cleaning also.  I've seen as much as half of them clogged and this will affect the air flow.

just for laughs

@ May 21, 2013 4:16 PM in just for laughs

sorry can not get the pictures to open

just for laughs

@ May 21, 2013 3:58 PM in just for laughs

I always enjoy and find it fun when you get called by a home owner to look at a system someone else has installed.  Check it out.  Is this what you call ugly?  Sorry for the bad drawing.

Aquatherm Ecosun

@ March 25, 2013 3:28 PM in Aquatherm Ecosun

Has anyone installed these panels? Would be interested in knowing your experience with them.

heat pump t-stat

@ February 12, 2013 10:18 PM in heat pump t-stat

Does anybody kn ow of a heat pump t-stat that will let you choose at what outdoor temperature you can stop the heat pump and run of either electric strip heat or gas back-up?

watts flex plate vs warsbo joist trak plate

@ February 12, 2013 12:35 AM in watts flex plate vs warsbo joist trak plate

Has anyone tried the Watts flex plate and how did it compare the the Warsbo joist trak plate.  Have a job coming up and the home owner has been talking about the flex plate.  I've installed the joist plate with good results and am wondering about the flex plate.  Any body tried them?  How did they work? Easier or harder to install? 

440 volt run capacitors

@ July 11, 2012 2:47 PM in 440 volt run capacitors

Replaced a 377 volt run capacitor on a heat pump with a new one and system started up and runs fine.  Got back to shop and parts guy called and said that he gave me a capacitor rated at 440 volts.  Is there any problem running the 440v or should it be replaced with one rated at 377?

your right

@ June 21, 2012 7:55 PM in How offen do you see this

Your right it is a condensing boiler.  The condensate pump was hanging from the line just out of site.  The venting terminated to the outside through the rim joist. Tthe venting was totally shot and came apart with just a shake.  I'm holding it apart to take this picture.  Asked my Ferguson rep. and he said that with this boiler b-vent was a common fix.  Sreamhead's right.

How offen do you see this

@ June 21, 2012 5:41 PM in How offen do you see this

Was called to inspect a boiler system in a house that was being remodeled.  House was 50 some years old and the boiler was 1982 or 84 Weil McLain VHE forced draft series.  Note the foil tape all over the b-vent.  Definitely needs new boiler and venting. Near boiler piping looks good, straight and clean, but pressure gauge reads zero and when opening the drain at bottom of return pipe no water comes out.  Pulled out the air tank to pressurize the system but air went out as fast as I could put it in.  Pulled out the hose to fill the system and in no time at all water started leaking out of most of the near boiler piping joints and from inside the boiler.  The galv. piping looked new but the more I looked at it the more something did not look right.  Answer, No unions.  Checking the upper horz. pipe with the sticker, noticed that the installer(?) tighten one end of the pipe into one fitting then backed it out to tighten the other side.  Both the hot out and cold return to the boiler were done this way.  That's what happens when you try to save a buck.

Laing(?) electric boiler pump combination?

@ February 22, 2012 2:56 PM in Laing(?) electric boiler pump combination?

Does anyone know if the Laing(?) electric boiler/pump combination is still available and where to get it?

try the vacuum trick

@ January 18, 2012 10:07 PM in polaris water heater help

Is there an in-line filter on the intake vent.  Try hooking a shop vac with 2" hose up to the combustion air intake pipe near as possible to the base and run it for 10 minutes.  See if this wiil get it going again.

Old Sunland drainback system control

@ December 1, 2011 3:48 AM in Old Sunland drainback system control

Does anyone happen to know who manufactured the differential control that was installed with the old Sunland drainback system installed in the early 1980's.  The control model is a W-990 and says's "Differential Temperature Control".  Also any idea as to weather it used 3K or 10K sensors. 

Thermomax solar system

@ September 12, 2011 3:09 PM in Thermomax solar system

Have 2- 30 tube and 1- 20 tube t-max headers and appox. 58 tubes for sales. Will sale all or part.  50 tubes system $2000.00.  30 tube system $1500.00.  20 tube $1000.00 or best offers.  Location Seattle and can deliver to greater Seattle, Tacoma or Everett areas

where do you get it

@ July 28, 2011 3:32 PM in Outdoor pipe wrap

Hey Mark, where do you get this stuff at.

the verdict maybe in

@ July 11, 2011 10:40 PM in Grundfos zone pump burning keeps out

Thanks to everyone who replied, I have to say I screwed up on which pump was bad in my earlier posts. Sorry to all, its the left one, as the new picture shows.  I took the pump motor off and it was clean, removed the check although it worked OK and put the check valve back into the Grundfos pump.  I also added an in-line Pentair flow-meter on the return line.  Put everything back together and power flushed the system.  Note the 2 hoses connected to the manifold hose-bibs.  The picture was taken during flushing and the flow-meter shows just over 4 gpm. 
After a good flush I turned the system on and the flow-meter read 2.5 gpm.  Amp draw .77, name plate says .78, voltage 118.  Shut the system down an removed the flow-meter then re-flushed.  Same readings voltage and amp draw.  After 20 minutes of run time the new pumps housing surface temperature was 138 degrees using my Fluke infrared thermometer, the other two were running 10 and 8 degrees cooler.  Never checked surface temperatures before but it was super-hot to the touch.  Time will tell.  Thanks again.

Icing indoor coil

@ July 7, 2011 8:41 PM in Icing indoor coil

Have a 2 ton AC system were the indoor coil freeze into a block of ice.  We've checked the air flow and it looks to be on the low side but changing duct-work is not possible.  Have heard about a temperature switch that can be installed inside the AH to measure air temperature and stop the outdoor unit until the air coil deices.  Anyone done this and where and how did you mount it?

15 ft of head?

@ July 7, 2011 8:31 PM in Grundfos zone pump burning keeps out

Ichmb, I get 6 ft of head at 2 gpm using Wirsbo spec's and this tubing looks to have a thinner wall.  At 3 gpm it may be that high, however will not the loop balance out around 2.5 gpm based on resistance and max head of pump.

it's been working

@ July 7, 2011 8:19 PM in Grundfos zone pump burning keeps out

HR, sorry for the double reply, I was finally able to read the rest of your post.  The owner installed the system as an open loop around 6 years ago but the higher pressure caused to many leaks in the joist tubing connections.  We changed it to closed loop 2 years ago.  I wanted to cut it all out and stat over but we all no owners want to save money.  They replaced the zone pump the first time shortly after the change to closed loop, and now two more times.  The last two times have been under warranty, but replacing pumps is not what it's all about.  Both manifolds (return not shown) have hose bibs that we use for flushing.  You may be able to make out the red handle just to the right of the 3rd pump.

Check valve and pump curves.

@ July 7, 2011 7:55 PM in Grundfos zone pump burning keeps out

Greg, I took out the check from the new pump before installing it.  The zone is just 250 sq ft slab with 3/4" tubing on 12" centers.  The Grundfos hand book shows the pump curve on the UP15-29SU to top out at 10 ft of head and I figured at 2 gpm the head would be about 6 ft.  I've always thought and correct me if I'm wrong, that a circulator in a closed loop would find its own balance point.  That the amount of flow would be based on the loops Resistance (head).  I should be getting 2 to 2.5 gpm and not be dead heading.  At this point I'm think I'll install a flow meter above the pump and see what I get.

Picture of system

@ July 7, 2011 2:27 AM in Grundfos zone pump burning keeps out

Thanks for the replies.  We've had awesume weather here in the Pacific Northwest, the snows melting, the rivers are running and I had to get my rafting in before it's all gone.  This picture was taken after the system was converted to close loop and before either of the new pumps were installed.  Far right zone pump is problem, other two are working fine.  It supplies a single concrete slab zone with a heating load of 3800 Btu's at 21 degree OD design temp and a 60 degree T-stat setting.  Zone pumps are stainless steel and control voltage is 118 volts.  System operating pressure is 15 PSI.
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