Originally Posted By: gluck This post was automatically imported from our archived forum.
Tankless. No I am not talking about the Canadian Army. We have a superb fleet of septic tanks standing at the ready!
I am supposed to look at a house on Friday that has a tankless water heater. I have never encountered such an animal in person before. Has anyone had dealings with an electric tankless hot water system? What did you think? What should I look out for?
Originally Posted By: jschwartz1 This post was automatically imported from our archived forum.
gluck wrote:
Tankless. No I am not talking about the Canadian Army. We have a superb fleet of septic tanks standing at the ready!
I am supposed to look at a house on Friday that has a tankless water heater. I have never encountered such an animal in person before. Has anyone had dealings with an electric tankless hot water system? What did you think? What should I look out for?
Thanks in advance!
An enquiring mind .......
A plug! 
Originally Posted By: gbeaumont This post was automatically imported from our archived forum.
Hi to all,
George, these are real simple, I grew up with these in England, either it produces hot water or it don't, check the flue (normally balanced type) but other than that you're done.
Originally Posted By: aleleika This post was automatically imported from our archived forum.
gbeaumont wrote:
Hi to all,
George, these are real simple, I grew up with these in England, either it produces hot water or it don't, check the flue (normally balanced type) but other than that you're done.
Regards
Gerry
Doesn't it still need a relief valve? You say its electric, but even the gas tankless water heaters have electric hooked up to it. Someone might have told you it was electric because they see the electric hook up to it. If it happens to be gas then you still have to worry about confined space.
High input BTUs also mean gas line line sizing is another thing to watch, most units require ?? ALL THE WAY to the unit - when I talked to the Takagi rep on another matter he told me around 80% of the problems he sees on new and retrofit installations are the results of undersized gas supply. Sizing this is beyond most SOPs, but if you see a 1/2" pipe serving one such a unit, try to check the installation instructions.
Some other units are sealed (see below), drawing their air from the exterior, on both types of units look for a back draft preventer (directly above both the units shown here and marked with an arrow below) in freezing climates, units can and freeze and burst otherwise.
Most require SS vent pipe sealed with high-temp (red) sealant per manufacture?s instructions (arrow at left):
Originally Posted By: gluck This post was automatically imported from our archived forum.
Thanks Robert. that is a good site and very informative.
Thanks too, Michael. Interesting pictures. I particularly liked the one showing plastic bags filled with paper sitting on top of th unit next to the exhaust!!!
It is this sort of help that makes my N.A.C.H.I. membership worth every penny! I shall now sally forth to meet the beast! HUZZAH!