Follow up on the water heater installation: The ISOTEMP SPA 15 fits the galley cabinet very nicely. I did need to install some 1/4 inch starboard spacers under the mounting feet to accommodate attaching a 1/2 inch Female NPT 90 degree elbow on the tank drain outlet fitting. I also had to use Teflon tape on the mixer connections to the water heater on both hot and cold connections, they were not sealed at the factory and relied on compression fittings alone.
The heat exchanger hoses from the engine are 5/8 ¡° I.D. (Inside diameter) purchased bronze 90 degree elbows (female to female) from West Marine and brass 1/2 inch NPT brass hose barbs from granger.com. The original hoses from the engine were reused and had to be cut shorter due to mounting on the front of the water heater. I used the PEX tubing cutter for this, but one of the hoses was reinforced with wire, which had to be cut with heavy duty wire cutters.
i re-plumbed the hot and cold water lines to and from the galley sink with 1/2 inch PEX ?tubing and used the PEX shark connectors with appropriate 1/2 inch NPT female fittings to connect to the water heater tank. Also installing a SEAGULL IV water filter in line with the water pump.
i installed by-pass valves on the hot and cold inlets to the water tank for easy bypass of the tank for winterization. Which were also handy when I need to sanitize either water tank without having to contaminate the water tank.
The first photo is the current installation, I had a bad by-pass valve and the spare had a different 1/2 NPT gender, so I had to improvise to get it working, as the local hardware store did not have the correct fitting in stock. The plus, I have found, is I can see the water flowing through the transparent tubing when winterizing and cleaning/clearing lines.
One of the benefits of using the PEX shark fittings is that you can rotate the tubing in the fitting to orientate connections.And you can disconnect the tubing with the proper tool if you make a mistake or need to make changes.
The ISOTEMP SPA 15 has a built in cold water mixer, so no more worries about scalding yourself at the hot water tap.
Love having hot water Again!
Daryl Clark