13. Torque 301. Had my water heater on today so I'm assuming valves are not in bypass mode. I had trouble finding the valves. Are they the ones that are behind the heater cause they are really hard to get to. The panel in under storage had to be pulled off and there is duct work in front of the access to the heater. How do you know if water heater is full? The manual here says if bypass is on it can be deceiving. But I have to figure out where the valves are first. Thanks. Please be patient. I'm trying to read the guides first but they don't show everything.