Alan (California Radiant) Forbes
Joined on August 14, 2009
Last Post on December 1, 2013
@ August 6, 2013 9:30 PM in MikvahThanks everyone for turning me on to Moses; what a guy! He emailed me and then called me to offer his magnificent morsels on mikvahs. With a name like Moses, I trust him.
@ July 31, 2013 7:20 PM in MikvahI've been asked to re-pipe a mikvah. A mikvah is a heated pool used in Jewish cleansing ceremonies.
The existing mikvah uses a pool heater in a separate room next to the mikvah. It was explained to me by the rabbi that this mikvah was not installed properly; that the water in the mikvah must stay in the mikva and not leave the room to go through the heater, pump and filter.
They have ordered a heat exchanger (shell & tube?) that will sit in the mikvah and want a wall-mounted boiler to serve it. The existing Raypak pool heater will not heat to 180F. Can any of you make a boiler suggestion? An "on-demand" heater might work, but I want something beefier (non-condensing) that's meant to operate at higher temperatures. The existing pool heater has an input rating of 181,000 BTU's.
Also, I'd like to pipe it in copper, but don't know if copper is resistant to chlorine.
@ July 28, 2013 3:36 PM in Precharge Expansion tank: old school non-bladderto know how it's piped into the system, i.e. on the vertical supply coming out of the boiler?
Expansion tanks and their effect on the heating system can be very complex; more than my little brain can comprehend. I have replaced or recharged many expansion tanks on systems that over-pressurize, only to have the symptoms repeat. Some have bad fill valves, some have pin holes in the indirect heat exchanger, but the majority seem to just not be able to get along with the expansion tank even though it is properly sized and charged.
@ July 26, 2013 9:02 PM in floor made of framing planks turned on edge: radiant heat below and finish above?They used to have output charts for their Thinfin C as a function of the R-value of the floor, but I can no longer find them on their website.
Heatloss on new houses here in the Bay Area typically come in at 17-20 BTU's/ square foot. I want to see if theses accelerator plates can approach that with the kind of floor that Simon has.
@ July 25, 2013 11:29 AM in diverter teeYes, I would use a 20 degree delta tee, figure out the BTU's of each unit and size the mains accordingly. It will probably come out to something less than 1-1/4 bacause you're dividing the load.
If you have enough money in the job, I would pipe it with a 2-pipe, reverse return system. A diverter tee system is notoriously difficult to purge.
@ July 25, 2013 1:31 AM in diverter teeAre each of the apartments going to have their own thermostat?
@ July 23, 2013 1:28 PM in I was all set to order my boiler...They have been out West here for most of my 33 years in the trade. Their products are top shelf. In my opinion, you would not be making a mistake to install one in your house.
@ July 22, 2013 8:00 PM in on line parts pricingI think we are within the guidelines here. The M/M item was brought up just to show how cheap it used to be and there was no discussion about current pricing. The overall discussion is about pricing guides in general.
@ July 21, 2013 8:23 PM in How to find a qualified heating contractor?Tell us where you live. Someone might chime in.
@ July 20, 2013 10:00 AM in on line parts pricingI had one on my desk. It was huge and they sent me updates regularly.
The trick was to know what discounts your suppliers gave you. Every supplier was different. Cast iron pipe and fittings were something like "15% plus six 5's" which meant you deducted 15% from the list price and then deducted 5%, six times. Every now and then, they would add or drop off one of the fives.
@ July 20, 2013 1:52 AM in Faucet IDChicago is my first choice, followed by Fisher and T&S Brass.
You got something else in mind?
@ July 19, 2013 6:40 PM in Faucet IDThe faucet is made by none other than Pioneer Industries out of Taiwan.
@ July 19, 2013 1:17 PM in Faucet ID.............er, Rob. = )
But it's worth a look-see first.
@ July 19, 2013 12:22 PM in idea for old HTP VoyagerTurn it on its side and float it down James River.
@ July 19, 2013 12:10 PM in Faucet IDBut if that's a Chicago, I'll eat my hat.
The owner sent me the picture and I'll be going out this afternoon to work on it - it's dripping.
I love Chicago faucets as well and carry a supply of the Zurn ceramic disc cartridges on my truck; both kinds - short and long. I'll let you know what I come up with.
@ July 10, 2013 12:57 PM in Indirect tempsIf you decide to use a mixing valve, I like the new one by Honeywell. It's very easy to install.
Edit: Sorry, this is made for a standard, atmospheric water heater and may not be set up properly for an indirect.
@ July 9, 2013 7:20 PM in Indirect temps125F
If the capacity of the indirect is sufficient for household needs, then 125F is fine. If not, we set the indirect higher (150F) and install a tempering valve.
@ July 2, 2013 12:15 AM in Help with finding an angle valve for Runtal radiatorsIn this land of plenty:
We used to be able to do it this way and make it look good, but now when for some reason, we can't get this perfectly suited connector, we can't do it this way anymore.
Something is wrong somewhere.
@ June 28, 2013 2:26 PM in Vitola BiferralI had to replace the grounding electrode on a VB2-33 that we installed 11 years ago. This boiler has been flawless except to this one problem and I'm wondering what could have caused it to deform. Any ideas?
@ June 26, 2013 1:15 AM in Help with finding an angle valve for Runtal radiatorsIt would be nice to know what Runtal recommends on how to install their radiators.
Don't they have any "solutions" on their website?