Installed the Girard tankless water heater two years ago. Have had no issues at all. Camper is parked and doesn’t travel. Stays in place year round. Added a 100lb vertical propane tank and water heater started only heating 15-30 seconds, then only puts out 80 degree water. Switched back to the 40lb tank and heater is operating normally. What do I not know about propane pressures between 40 and 100lb tanks? 100lb tank is 75-80% full. Thanks for any insight. Was just looking for less tank refills, as my teen aged daughter is living in the camper this summer.
I replied a little too fast..... you can mix regulator types but you do have to make sure the vent points in the right direction. The vent should be pointed down if moving a horizontal regulator to a vertical style tank. If the vent is pointed up, water and debris can get into the regulator and cause issues.
Not sure if it is his problem but worth some investigation....
I have not tried that. We’re in the process of moving. The 100lb tank was connected to my home generator. Genny worked fine on that tank, but I will give the bleed screw a turn when I’m back at the camper this weekend.