tag:blogger.com,1999:blog-5170363504994434185.post2875260864223729775..comments2023-11-05T04:22:37.344-07:00Comments on TIME or SPACE: Bed Rock: Designevanhttp://www.blogger.com/profile/02893028910810951842noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-5170363504994434185.post-68844908267406552542017-01-16T10:53:29.907-07:002017-01-16T10:53:29.907-07:00Congratulations on a good project. I ran away from...Congratulations on a good project. I ran away from that "other" site as well.<br />It struck me as pompous and highly negative. The information shared by both of you is useful to many. Keep it up.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5170363504994434185.post-2020966323380324732014-05-25T00:49:38.795-06:002014-05-25T00:49:38.795-06:00Dave, no sweat. I appreciate you sharing your exp...Dave, no sweat. I appreciate you sharing your experim-ence with such systems-your testimony was pivotal in keeping my morale fueled to see this project through. After burning up 2-3 Eemax tankless electric heaters, I ended up having success with a Rheem RTE-7, though getting it started required adjusting the flow switch to a more sensitive location-accomplished simply with a set screw. 7 KW is a bit more than my energy needs, but with the added current control of the thermostat, the added capacity might not dictate excessive consumption in this case. I toyed with on/off control, but got a brief steamy/percolating noise in the heater upon startup. I'm a bit shy of this noise after burning several previous heaters. I have found reasonable control by simply setting the thermostat built into my Rheem heater. I am finding simple comfort by keeping the circulating water temp in the 90F range. Winter wanted 4-5 of the Rheem thermosat tick marks, presently it wants only 1-2 tick marks. The Taco circ. pump runs all the time, and it feels hot, but it keeps going, and draws little electrical current. Yes, my slab could benefit from closer pipe spacing, but honestly, the radius I used to bend the 1/2" Oxygen barrier pex seemed close to kinking. Maybe pre-heating the tubing would make for tighter radius bends. I don't anticipate running this heat system trough the hot, dog days of SLC summer, but it surely seems convenient to plug in a pump and have instant heating capability. evanhttps://www.blogger.com/profile/02893028910810951842noreply@blogger.comtag:blogger.com,1999:blog-5170363504994434185.post-10798400579343090972014-02-13T08:55:06.587-07:002014-02-13T08:55:06.587-07:00Evan, thank you for the kind comments on that '...Evan, thank you for the kind comments on that 'other' site. You will be glad to know we now have used the cheaper tankless water heaters (in lieu of the more expensive boilers) for over three years now with no problems - and have not had to use our backup heater - it is still in the box. No 'legionnaires disease', none of the problems the 'professionals' on that site warned about. Maybe we have just been lucky, but I got the feeling there was not enough profit in this system for the 'pros' to promote or back the concept. After all the bashing, I saw no reason to continue posting on that site. Taco does make a smaller pump than the 006 and with no rise you could go with a minimal unit in your situation. Looking at your photo above, I think I would have not skimped on Pex and would have doubled up (every three inches), but it should work fine - it is just as I laid it in the floor of our residence. If you use a heater that accepts hot water it should serve you well. Dave Eveland.Anonymousnoreply@blogger.com