What are these? AD31 engine
- Thread starter Glasto1
- Start date
bowler
Active member
Those valves route coolant to your calorifier/hot water tank and back.
Plum
Well-known member
As Bowler says. I have the same ones. Normally left open and only needed to isolate the calorifier in case of a problem or maintenance
Glasto1
New member
Ok perfect thank you. That's Very helpful.
Glasto1
New member
so this is raw water side? Does the raw water heat up the water in the tank like a heat exchanger? Sorry, my first boat
alt
Well-known member
Coolant runs around your engine (passing through the heat exchanger, where raw water (sea) cools it.
With a calorifier (immersion, heated by coolant), the coolant is re-directed through your calorifier (there's a coil in there) via the pipes you have a pic of to heat your hot water domestic system.
On a side note... spray some TFR (Traffic Film Remover) in that engine bay, let it soak, agitate with a rag and wipe all that dirt off the floor of the engine bay - there's nothing more satisfying than looking down at a clean engine bay. Heck, even soak the engine block too and go around it with a rag / toothbrush to get rid of all the belt dust. Wash it down with (liberal) water and dry it off with an airline (compressed air) or even just rags and let it dry out. If there's rusty bits, give it a coat of Waxoly
With a calorifier (immersion, heated by coolant), the coolant is re-directed through your calorifier (there's a coil in there) via the pipes you have a pic of to heat your hot water domestic system.
On a side note... spray some TFR (Traffic Film Remover) in that engine bay, let it soak, agitate with a rag and wipe all that dirt off the floor of the engine bay - there's nothing more satisfying than looking down at a clean engine bay. Heck, even soak the engine block too and go around it with a rag / toothbrush to get rid of all the belt dust. Wash it down with (liberal) water and dry it off with an airline (compressed air) or even just rags and let it dry out. If there's rusty bits, give it a coat of Waxoly
Seastoke
Well-known member
Have you serviced yet.
Momac
Well-known member
My engines are not quite the same . But no valves provided. Could be better with the valves in case a hose fails
Plum
Well-known member
Top marks for clean engine ! The valves in question are no longer available from VP and they now show the use of inline ball valves instead:-
Momac
Well-known member
I guess its up to the boat builder to fit the valves (or not) .
bowler
Active member
No valves on mine.
