Just bought first 5th wheel...2002 Keystone Montana. Had the intro briefing from service tech, but can't remember everything. On the monitoring panel, there is a switch for heater and pump. I understa...
You're correct. Answered your own question. If you have the water heater on and are not connected to city water, you should also have the pump on. Do not turn the water heater on without presurized water in the system.