bussman

Thanks Richard, how did you set it all up? I may have to do this, thanks for any and all info.

Im sorry for the delayed response but I have news on my wonderful Apollo DirectVent Heating system. I did have a plumber replace the tempering valve on this system, which produced sufficient hot water (temps where correct) but later that day, luke warm water to the shower again. I may have to accept the fact that is the way the system works, which stinks. I am officially stumped. Thanks for all your help once again.

Ok then, your tempering valve is kaplooey. Call a better plumber and figure out why. - Jim Katen, Oregon Jim can a tempering valve allow some hot or warm water some of the time and then just go cold? I was told it either works or doesn't. I forgot to mention the water off the water heater was plenty hot enough but I did not temp it. What would one expect to pay for such repair? Thanks again

"The water heater should be able to completely recover in well under 30 minutes. As an experiment, try turning the heating system off or way down and leaving it that way for 30 minutes. You should then have plenty of hot water at all taps. If you don't, tell us the temperature of the water at the taps and at the tank" First let me say that this is a 40 gallon system, as was the old one. Apollo Direct Vent Water Heater Model#A640YBDSL Serial#S0805F000250. I tried the above test, turn heater off for around 40 minutes then when to each water source. Results Kitchen Sink temperature was mid 90's, same with the bathroom sink (both downstairs, same floor as Water Heater), then went to the upstairs bathroom, sink was mid 90's and the shower almost hit 100. The heat was set a 70 degrees (which I know is warm, but the wife wins), but it is comfortable in the townhouse. Im so frustrated with this system. Should I just remove the mixing valve, its set at the hightest setting? Once again thanks to everyone for their input.

Thanks for all the responses, much appreciated. The problem has been consistant even with the new water heater. The day the plumber was checking the system he said the water temps were appropriate and correct. The first floor seems to be getting enough hot water at the bathroom sink and kitchen sink. I do feel that the heating element is stealing the hot water but I thought it was designed to do both (heat the house and produce hot water for bathing), Could this possibly be the best this system will do?? Would turning off the heat before a shower give enough water? Before I replaced the unit it seemed if I crank the heater in the early morning then shut it down or lowered it to 68 a half hour before I took a shower, it would give me enough hot water or at least hot water. Thanks again everyone for any and all suggestions.

My townhouse has an Apollo Direct Vent Heating System in it, replaced just over a year ago. My problem is that I cannot get consist Hot Water to the upstairs bathroom. One day I have hot water the next none. The shower and the sink have the same either hot or usually cold water. My HVAC installer claimed it was a 3/4" mixing valve that was faulty, Ive had a plumber examine the system and he said the mixing valve and the mix valve in the shower were performing correctly. Just curious to see if anyone has experience with this problem and if so, what was the fix. Thanks