Relocating Water Heater - SailNet Community
 
LinkBack Thread Tools
post #1 of 6 Old 04-14-2011 Thread Starter
Grasshopper
 
JiffyLube's Avatar
 
Join Date: Jan 2008
Location: Oceanside, Ca.
Posts: 896
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
 
Relocating Water Heater

I'm thinking of relocating our water heater that runs on 120v and engine heat exchanger, to another location farther from the engine than it is now. Now it's located slightly higher and behind the engine about 3 1/2 feet, and I'm thinking I'd like to locate it in another location about 1 foot above the engine and 6 or 7 feet away. The most I can get from marine water heater manuals is to locate the heater as close to the engine as possible, but I'm wondering if anyone else has relocated their water heater farther away with good results.
JiffyLube is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 6 Old 04-14-2011
Senior Member
 
Join Date: Oct 2000
Location: Portland, OR
Posts: 685
Thanks: 1
Thanked 8 Times in 8 Posts
Rep Power: 15
 
I changed my water heater location and thereby added about 12' total hose to the run, both ways.
No problems for almost a decade, but for all I know I might be right at the limit of what the iron-vane closed-cooling pump is rated for...

To add more distance yet to the hose run, in series with that coolant circuit is a Heatercraft cabin heater that adds about another 8 feet total to that circuit also.

This is on a Universal M25XP.

L
olson34 is offline  
Quote Quick Reply Share with Facebook
post #3 of 6 Old 04-14-2011
Just another Moderator
 
Faster's Avatar
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,518
Thanks: 104
Thanked 309 Times in 299 Posts
Rep Power: 10
     
On a previous boat with the heating coil above the engine we added a forced circulation pump to the loop because it was hit-and-miss whether we got enough flow naturally to heat the water.

We later changed the tank to a lower profile model (lower than the engine) and didn't need/use that pump anymore. We also had a 'bus heater' (similar to what Olson describes above) in a parallel cct, that may have been part of the problem with the waterheater circuit....

On the current boat the water heater is about 6 feet from the engine with the coil hoses below the height of the coolant resevoir. It works fine (no additional space heater in the circuit).

Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Faster is offline  
Quote Quick Reply Share with Facebook
post #4 of 6 Old 04-14-2011 Thread Starter
Grasshopper
 
JiffyLube's Avatar
 
Join Date: Jan 2008
Location: Oceanside, Ca.
Posts: 896
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
 
Obviously your "forced circulation pump" was designed to move coolant, and I've thought about the idea of an assist pump myself just in case. Was this a 12v pump?
JiffyLube is offline  
Quote Quick Reply Share with Facebook
post #5 of 6 Old 04-15-2011
Senior Member
 
Omatako's Avatar
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,536
Thanks: 1
Thanked 32 Times in 29 Posts
Rep Power: 12
 
I'm actually about to do the same thing except I'm just going from one side of the engine to the other. In the research that I have done it seems that the only issue is the height and it is apparently wise to have the middle of the tank at the same height as the top if the engine.

As it happens that is where mine is now and it works just fine without any forced flow. I hope to be able to do the same again.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

__________________

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

Arthur C. Clarke
Omatako is offline  
Quote Quick Reply Share with Facebook
post #6 of 6 Old 04-15-2011
Just another Moderator
 
Faster's Avatar
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,518
Thanks: 104
Thanked 309 Times in 299 Posts
Rep Power: 10
     
Quote:
Originally Posted by JiffyLube View Post
Obviously your "forced circulation pump" was designed to move coolant, and I've thought about the idea of an assist pump myself just in case. Was this a 12v pump?
Yes, a small Jabsco or Sherwood with an attached 12VDC motor. We got it cheap at a marine consignement store...

Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Faster is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
need hot water heater twisted23 Gear & Maintenance 13 01-14-2011 11:57 PM
cs 30 water heater timmorgan CS Yachts 1 07-21-2009 06:01 AM
hot water heater sailaway50 General Discussion (sailing related) 1 01-10-2008 09:29 PM
Connecting raw water cooling to water heater Northeaster Gear & Maintenance 18 04-28-2007 06:11 PM
hot water heater firstafair General Discussion (sailing related) 12 11-09-2006 10:25 AM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome