How do I winterize 2-outlet heater?

[JWAT]

I have a 1997 Super Sport...converted to Super Air and I have always winterized the boat myself. This year I installed a two outlet heater and I was wondering what I need to do in order to winterize the heater. Can anyone give me some step by step instructions. Thanks a lot!

[DanielC]

RE: How do I winterize 2-outlet heater?

There are two hoses going to your heater, for the water. Disconnect them both at the engine. Blow in one, until water stops coming out of the other.
Another option is to disconnect them both, and hook the vacuum side of a Wet/dry vac to one water hose, and suck on the hose until the no more water comes out.

[JWAT]

Thanks a lot for the reply. So pretty much I just need to make sure I drain all of the water out of the hoses/core and that should be it?

[jmo]

JWAT - I drain the water out and then reconnect the hoses so when I cycle antifreeze throughout the raw water cooling system the heater core gets filled as well.

JMO