Originally Posted by cat_and_matt
So I went through everything with my Girard last year to try to get it to be acceptable. The mode switch was already bypassed which was what Girard first sent me instructions to do. The problem is not being able to regulate the temperature yourself when dealing with changes in water pressure. I have been to multiple camp grounds during my first year with by Greyhawk 31SS and I had to remove my pressure regulator, any quick connects used on the hoses and drill out the hole on the plastic washer between the shower hose and the shower head in order to get enough water to flow so that it wouldn't cycle up to hot and cut off and on. I proved this was the issue by having to turn on water at the sink while showering so enough water would flow through the Girard.
I see that there is now a dial control on newer models. Does anyone know if Girard will provide free alterations to existing models? It is obvious from user experiences that the dial is an requirement and the product engineering didn't account for variences in pressures accross camp grounds.
I would be fine with the product if I could control the temperature setting/flow or what ever the dial does. I haven't emailed Jerry yet but wanted to see what success anyone else had with getting upgraded to dial version.
So first off I can't say enough about Jerry and every thing he does to track the forums and stay on top of issues that folks are having running this new system through its paces. In the end we figured out that I just to too many places that have varying degrees of temperature to their water so I was never really ever able to get the Gen I system that I have to work with the Auto/Low switch. I could almost never get my system to not be too hot and almost always had to have another hot water tap turned on while getting a shower in order to get enough flow to keep the temperature cool enough. I proved that I had to have the water pressure up to at least 60 psi before I had enough flow. I removed all possible restrictions to the water flow and just couldn't get it cool enough. The internal pump limits at 40 psi so obviously this wasn't going to work for me.
I the end we worked out an exchange to the latest generation of thier tankless heater that comes with a control knob that lets you adjust the BTUs. This is exactly what was needed. One extremely extra benfit this upgrade was the modifications they have done to the blower and vent system. My previous unit was so loud when it came on that I really wished that I had know how loud it was going to be before I picke a Greyhawk model that had the vent on the awning side. It is now so quite that you almost don't hear it kick on when you are out side.
If you do get yours upgraded then watch out for one thing. My RV dealer that did the swap took the Auto/On switch and tied it into ground so that it now acts as another on/off switch. Kind of handy seeing as how I now don't have to open the outside panel anymore to turn it on or off. Which is good because if anything is going to break on this unit it would be the panel locking mechanism. Of course my dealer negeleted to tell me about this bit and I ended up going from the dealer to camping for the weekend and couldn't get the unit to fire up. I spent all day with Girard tech support and an multimeter and believe you me I know exactly how this thing works and the tech now knows how it reacts to having power but no ground. It wasn't until I hooked a jumpstat battery up to the interior connections that we figured out the unit was fine and something was wrong with the wiring. Once the dealer finally called me back and asked if I turned on the on/off switch inside and then began groveling for not telling me about it were things running good. The tech was in disbelief since this was not in the instructions that they provide for the installation, but in the end we both agreed that is was kind of a good idea. Now I have no issues with being able to adjust the temperature and I can run well off of the pump as well.
I recommend the product as long as you the version with the BTU control knob. Thanks again to Jerry and the tech support for sticking with me to work through this.