Just finished de-winterizing my fresh-water system and noticed something strange. When my freshwater pump
gets up to pressure the motor
turns off and the system works as expected - as long as I have the spigot turned to cold water
. As soon I turn it to hot water
- it starts acting strangely. Note that I have not turned on the heating element yet.
The "hot" water
runs fine but when I turn it off the pump
runs for another 5-7 seconds until it turns off. Also, if I turn the freshwater pump off at the breaker panel (after getting the system up to pressure) I can run the "hot" water side for a good 40 seconds until it loses pressure. It has never acted like this in the three seasons that I've had my boat
. I'm assuming that I am somehow over-pressured in the hot water heater
- but can't imagine how since the heating
element is not on and thus no thermal expansion. I'm left scratching my head
here....can anyone help? Thanks in advance.
Note: My hot water heater
is an Atwood EHM6-SM
"Azimuth" - 2003 Beneteau