mnm99
Well-Known Member
How many of you are running zincs in your hot water heater? Currently I only have a drain valve. Is it needed on a 6 gallon water heater.
Hot water heater Zinc question?
- Thread starter mnm99
- Start date
rondds
Well-Known Member
- Oct 3, 2006
- 8,859
- Boat Info
- 2001 380DA
- Engines
- Merc 8.1s (2008)...Hurth ZF 63 V-drives...WB 7.0 BCGD (2013), Garmin 8208 & 740 MFDs, GMR 24xHD dome
I've never seen a zinc in a marine HWH. Guessing they don't use them (?)
mnm99
Well-Known Member
CliffA
Well-Known Member
- Dec 29, 2009
- 4,712
- Boat Info
- 2001 Sea Ray 340DA
Name: 'Happy Place'
4.5kW West. Generator
Purchased Nov. 2014
Fresh Water Use
- Engines
- Twin Merc. 6.2L (MPI)
640 hp (Total)
Raw Water Cooled
V-Drive Transmissions
first I have heard of this.....I know there is no zinc on the HWH in my boat.....I replaced the HWH when I first bought the boat so I know that system pretty well.....maybe there is some type of housing for a zinc that can be installed in the water line but I don't see how that would protect the tank inside the HWH from corroding....
perhaps the HWH's installed on large Yachts are designed to have a sacrificial anode.....
cliff
JVM225
Well-Known Member
There was no zinc on the HWH on my old boat, and I don't think there is one on this one either. But now that you mention it there probably should be one. Especially on raw water cooled engines where the HWH is plumbed to get heat from the engine when it's running.
