Alan (California Radiant) Forbes
Joined on August 14, 2009
Last Post on March 9, 2014
@ January 11, 2010 10:50 PM in Taco 571-2 Zone Valave QuestionIf you've got 24 volts to the powerhead and the valve is not open, replace it.
If it's hot, that can be a sign of a faulty head.
@ January 11, 2010 9:30 PM in Customer Kudos!It makes it all worth while.
All the best from Berkeley,
@ January 8, 2010 6:08 PM in Radiant Heat & Humidity?Radiant heat does not make the air any dryer.
Many farced air heating contractors will try to scare homeowners with this argument.
@ January 8, 2010 5:36 PM in Vaporstat Wiringit as a new topic in "The Main Wall" forum (the other forums don't get as much traffic).I don't have time to wrap my head around it right now; I'm just between jobs.
@ January 8, 2010 12:15 PM in Pipe drill jig recommendationsYou don't really need a jig. Just drill and tap the top of the pipe.
@ January 8, 2010 12:09 PM in Vaporstat WiringMany manufacturers will make their controls a little more sophisticated by providing single pole, double throw (SPDT) switching. In this case, the R-W connection could turn on an alarm or turn on a light on a remote control board to tell an operator that the boiler was steaming.
@ January 8, 2010 11:59 AM in Why I chose to use radiators and not underfloor radiantago, we did a house that had a room a bit like yours; it was a 2-story open dining room; two of the walls were all glass. It calc'd. out to 50 BTU's/sq. ft. and I was worried that I couldn't get enough tubing on the floor to heat the room properly on a design day. But I trusted my numbers.
Radiant or radiators, I'd make that Greatroom of yours a separate and independent zone. It has a very different heating profile than any other room in the house, save the stairwell.
@ January 7, 2010 10:12 PM in English radiatorsI've been recommending this thread sealant for years:
It's anaerobic and will seal where other sealants fail.
@ January 7, 2010 2:46 PM in Why I chose to use radiators and not underfloor radiantThe numbers look good.
If you're designing the radiators for 140°, they will be big and expensive. But if fuel efficiency is your goal, then it's a good choice if you don't mind the added room ornaments.
@ January 7, 2010 2:32 PM in Indirect Water Heater? No controller needed?There's probably more than one way to do it, but the first thing that comes to mind is by using a 3-way zone valve that would direct boiler water to the indirect and away from the heating zones on a call for DHW.
Personally,I would opt for the Taco zone valve or pump controller. It makes everything easier; enabling priority, wiring and above all, diagnostics. The lights on the side of the controller tell you exactly what's going on.
@ January 7, 2010 1:16 PM in Why I chose to use radiators and not underfloor radiantYou sure your numbers are correct?
@ January 7, 2010 12:34 PM in English radiatorsto you is to stick with radiators you can buy in this country. As beautiful as they look, there are often problems. Late shipments, back-ordered items that never get filled, dropped orders, wrong dimensions, damaged in transit..........
Just my 2¢
@ January 7, 2010 11:13 AM in vaporstatHoneywell L408J1009 Vaporstat (non-mercury) 0-16 oz. (4-16oz. subtractive differential). I set mine at 16 oz. with an 8 oz. differential.
The old mercury Vaporstats are no longer made although you might find some still on someone's shelf.
And here is a discussion about some problems with the non-mercury Vaporstats:
@ January 7, 2010 12:25 AM in pressure relief valve?Yes, I've seen them fail in the closed position, at least in hot water systems where the pressure on the gauge exceeds the opening pressure stated on the relief valve.
I don't see any reason not to install redundant relief valves.
@ January 5, 2010 11:59 AM in Condensation Causing Leaks?Is there any way you can get a look at it?
@ January 5, 2010 11:13 AM in Condensation Causing Leaks?a vent gone bad. It's supposed to vent the air out of the main steam pipe. When steam reaches the vent, it should close and it sounds like yours isn't closing. You will somehow have to gain access and replace it. Put an access panel there for future inspections.
Do you still have a home warranty plan on the house? If so, make sure the contractor knows what he's doing.
@ January 4, 2010 1:57 PM in Trapped Air Pocket in Hot Water Heating Systemonce passed on a trick to remove some pesky air from a job I was having trouble with. Add some liquid dishwashing soap to your system. Mine was a 2-pipe radiator system and the soap made it too slippery for the air to hold on any more. I think I had to increase the pressure to 25 psi to make the bubbles smaller, but they finally gave up the ghost.
@ January 3, 2010 8:02 PM in Using TVR'sI believe Devan is talking about a system that instead of an indoor thermostat, an outdoor sensor will turn on the heating system when the temperature drops below 68 degrees. This same system will modulate the water temperature as a function of outdoor temperature; the colder it is outside, the hotter the water being delivered to the emitters. Ideally, if the radiators have been sized properly and the controller programmed correctly (reset ratio and parallel shift), the output of the radiators will match the heatloss of the individual rooms. In case the radiators are too large, the TRV's will prevent overheating.
@ December 31, 2009 3:36 PM in The end of heating systems?they will find a way to heat people without heating the entire building. Everyone will have a PHD (Personal Heating Device).
@ December 31, 2009 10:46 AM in Relay problem or something else?Measure the voltage at the Totaline relay under both scenarios.
@ December 31, 2009 10:14 AM in MZ parts anyone?Call them at (800)524-1102. You may have to wait 'til Monday.
@ December 30, 2009 9:53 PM in pressuretrol settingsit's shutting down too quickly? Is there a reliable pressure gauge on your boiler?