Captain K
Senior Member
- Joined
- Mar 19, 2012
- Messages
- 315
- Location
- USA
- Vessel Name
- GITANA
- Vessel Make
- Sea Ranger 47 Pilothouse
After way too many failures in marine hot water heaters (powered by A/C and heat exchanged from an engine), I have decided to replace my last lemon with an A/C only unit. That leaves the question of what to do with the leftover plumbing from my port FL 120 that carried engine heated coolant to the old water heater. The outgoing and return hoses connected to the engine each have ball valves on them. I'd like to leave it all in place in case of future need. Is it OK to just shut these ball valves without causing problems in the engine cooling circuit?