Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-11-2007, 06:50   #1
Senior Cruiser
 
sneuman's Avatar

Cruisers Forum Supporter

Join Date: May 2003
Location: Jamaica
Boat: Tayana 37 Cutter
Posts: 3,167
Images: 37
Installing water heater

I am installing a 4-gallon electric water heater which I would like to feed the galley and head sinks, plus shower. If I install it aft (near galley), am I likely to have any problem getting hot water 20' forward to the shower (which is the main reason I want the heater in the first place). The reason I ask is that the heater fits nicely near the galley, but not so nicely nearer the head.

BTW, it's an Ariston brand that I bought from Home Depot.
__________________

__________________
Voyage of Symbiosis: http://svsymbiosis.blogspot.com/
sneuman is offline   Reply With Quote
Old 08-11-2007, 06:57   #2
Senior Cruiser
 
Vasco's Avatar

Cruisers Forum Supporter

Join Date: Apr 2004
Location: Toronto
Boat: CS36Merlin, "La Belle Aurore" Ben393 "Breathless"
Posts: 7,130
Should not be a problem if properly installed with a good pump. On my CS36M the tank is way aft next to the rudder shat and the shower is forward works well even though when I replaced the pump I put a lesser flow one in.
__________________

__________________
Rick I
Toronto in summer, Bahamas in winter.
http://groups.yahoo.com/group/beneteau393/
Vasco is offline   Reply With Quote
Old 08-11-2007, 09:59   #3
Registered User

Join Date: May 2007
Location: new york
Boat: oday 32
Posts: 5
water heater

The only issue is that you will waste water while waiting for the hot water to appear at the tap. There is quite a bit of water in 20 feed of hose, so if you use a lot of hot water, you can waste quite a bit each time you run the water waiting for the hot water to appear. some people plumb in a y valve, with one end going back to the top of the water tank, so the cold water in the hose is preserved.
__________________
curlew32 is offline   Reply With Quote
Old 08-11-2007, 10:23   #4
Senior Cruiser
 
Vasco's Avatar

Cruisers Forum Supporter

Join Date: Apr 2004
Location: Toronto
Boat: CS36Merlin, "La Belle Aurore" Ben393 "Breathless"
Posts: 7,130
When we've been motoring and have a hot water shower we run the cold into a jug first so as not to waste water.
__________________
Rick I
Toronto in summer, Bahamas in winter.
http://groups.yahoo.com/group/beneteau393/
Vasco is offline   Reply With Quote
Old 08-11-2007, 13:36   #5
Senior Cruiser
 
S/V Antares's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: Annapolis, Bahamas
Boat: 1983 Gulfstar 36
Posts: 1,249
Images: 1
Neet looking unit. So this will be shore side only or do you have a genset?
__________________
Will & Muffin
Lucy the dog

"Yes, well.. perhaps some more wine" (Julia Child)
S/V Antares is offline   Reply With Quote
Old 09-11-2007, 03:38   #6
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,573
Images: 240
A 20 Foot length of ˝" inside diameter pipe/hose will hold approximately 0.204 US Gallons (or about 28 ounces) of water - which represents about 5% of your 4 Gal. water heater capacity.
As noted, the standing water in your HWS (Hot Water Supply) pipes will quickly cool, after having been heated. This represents wasted heating energy, and unless utilized, wasted water.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 09-11-2007, 09:05   #7
Senior Cruiser
 
sneuman's Avatar

Cruisers Forum Supporter

Join Date: May 2003
Location: Jamaica
Boat: Tayana 37 Cutter
Posts: 3,167
Images: 37
agreed, but the only other option is to install it amidship under a side berth, but that would involve a fair amount of re-routing of plumbing.
__________________
Voyage of Symbiosis: http://svsymbiosis.blogspot.com/
sneuman is offline   Reply With Quote
Old 09-11-2007, 09:07   #8
Senior Cruiser
 
sneuman's Avatar

Cruisers Forum Supporter

Join Date: May 2003
Location: Jamaica
Boat: Tayana 37 Cutter
Posts: 3,167
Images: 37
Quote:
Originally Posted by S/V Antares View Post
Neet looking unit. So this will be shore side only or do you have a genset?
shore-side only. i thought about a gas/electric, but from my research it looks like you'd still need 120v to ignite the propane. That sort of defeats the purpose.
__________________
Voyage of Symbiosis: http://svsymbiosis.blogspot.com/
sneuman is offline   Reply With Quote
Old 09-11-2007, 09:10   #9
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,573
Images: 240
Insulate the HWS pipe/hose, to minimize the heat loss.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 09-11-2007, 09:49   #10
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
We are talking such a small amount of water loss and heat loss compared to what is available, that I would not worry about either. There is maybe a foot or two of pressure head and any loss in flow will be from friction. Your better off placing the water heater where it is most convenient and running the hot water hose to the shower and head sink. What I am wondering is how well is your hot water heater meant for a home environment going to hold up in a marine environment?

There are also on demand hot water heaters which heat at the water outlet. No water heater is necessary with these.
Ariston GL-8 Electric Mini-Tank Point-of-Use Hot Water Heater

Hot Water Heater - More Categories - Compare Prices, Reviews and Buy at NexTag - Price - Review

A third option is to get a water heater that can use both electricity or waste heat from your generator or propulsion engine like this one: Atwood Marine - Boat Water Heater from the Boat Water Heater Source
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 09-11-2007, 11:04   #11
Senior Cruiser
 
sneuman's Avatar

Cruisers Forum Supporter

Join Date: May 2003
Location: Jamaica
Boat: Tayana 37 Cutter
Posts: 3,167
Images: 37
[quote=David M;110388]We are talking such a small amount of water loss and heat loss compared to what is available, that I would not worry about either. There is maybe a foot or two of pressure head and any loss in flow will be from friction. Your better off placing the water heater where it is most convenient and running the hot water hose to the shower and head sink. What I am wondering is how well is your hot water heater meant for a home environment going to hold up in a marine environment?

There are also on demand hot water heaters which heat at the water outlet. No water heater is necessary with these.
Ariston GL-8 Electric Mini-Tank Point-of-Use Hot Water Heater

Actually, the one I've purchased is a 4-gallon version of the one above.
__________________
Voyage of Symbiosis: http://svsymbiosis.blogspot.com/
sneuman is offline   Reply With Quote
Old 12-11-2007, 08:47   #12
Senior Cruiser
 
sneuman's Avatar

Cruisers Forum Supporter

Join Date: May 2003
Location: Jamaica
Boat: Tayana 37 Cutter
Posts: 3,167
Images: 37
I installed the Ariston this weekend. Works great, but 4 gallons ain't much - just enough for a quick shower, but that's all I really wanted anyway.

The unit, from Home Depot, is an Ariston. Very compact and easy to install, and at $150, can't beat the price!
__________________
Voyage of Symbiosis: http://svsymbiosis.blogspot.com/
sneuman is offline   Reply With Quote
Old 12-11-2007, 09:06   #13
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,573
Images: 240
Quote:
Originally Posted by sneuman View Post
...Works great, but 4 gallons ain't much - just enough for a quick shower, but that's all I really wanted anyway...
Sounds like you need to take “cool” Naval Showers*, under a Low-Flow shower head.

Low-flow shower heads (<2.5 gpm) and faucet aerators can reduce your water consumption & heating cost as much as 50% (same pressure but reduced volume).

Naval Showers typically use about 4-5 gallons of water total (or less). Cool showers use < 50% Hot water (by volume), hence reducing Hot water consumption to under 2 Gal.

1. turn on the water
2. immediately wet the body
3. turn off the water
4. soap up and scrub
5. turn the water back on, and rinse off the soap
6. turn off the water
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 12-11-2007, 09:13   #14
Registered User

Join Date: Feb 2007
Boat: 1973 Morgan 36T
Posts: 808
Images: 17
Hey Gord is that the same as a so called "Military Shower"?
__________________
Morgan Paul is offline   Reply With Quote
Old 13-11-2007, 09:24   #15
Senior Cruiser
 
sneuman's Avatar

Cruisers Forum Supporter

Join Date: May 2003
Location: Jamaica
Boat: Tayana 37 Cutter
Posts: 3,167
Images: 37
Quote:
Originally Posted by GordMay View Post
Sounds like you need to take “cool” Naval Showers*, under a Low-Flow shower head.

Low-flow shower heads (<2.5 gpm) and faucet aerators can reduce your water consumption & heating cost as much as 50% (same pressure but reduced volume).

Naval Showers typically use about 4-5 gallons of water total (or less). Cool showers use < 50% Hot water (by volume), hence reducing Hot water consumption to under 2 Gal.

1. turn on the water
2. immediately wet the body
3. turn off the water
4. soap up and scrub
5. turn the water back on, and rinse off the soap
6. turn off the water
yep, just enough hot water for that!
__________________

__________________
Voyage of Symbiosis: http://svsymbiosis.blogspot.com/
sneuman is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Propane Water Heater ? kanzkan Construction, Maintenance & Refit 77 28-05-2016 13:52
water heater Ray Hunt Construction, Maintenance & Refit 8 23-01-2009 11:34
force 10 water heater limmer Plumbing Systems and Fixtures 9 12-07-2008 02:49
Propane water heater rleslie Product or Service Reviews & Evaluations 18 10-10-2007 20:36
Hot Water Heater RETTSIE Plumbing Systems and Fixtures 1 05-07-2007 07:31



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 12:48.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.