Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-08-2011, 08:51 AM   #1
Newbie
 
Join Date: Jun 2011
Posts: 2
Rewards Points: 10
Question

No hot water from water heater unless the furnace is on


Ok here is the setup cold water goes into my elec hot water heater and comes out and goes into the inlet of the furnace then the outlet outlet of the furnace goes to the house. When I have the furnace on I get HOT HOT HOT water but when my furnace is off I only get water that is prob about 100 degrees. I do not want to run the furnace in the summer. What is the best way to set this up?

HELP
Thanks

karlmarsh is offline   Reply With Quote
Old 06-08-2011, 10:03 AM   #2
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,968
Rewards Points: 2,032
Default

No hot water from water heater unless the furnace is on


Add some T's and valves so the hot water coming out of the electric heater can skip past the inlet to the furnace and rejoin the outlet from the furnace. One valve goes in the middle of this bypass, the other valve just before the inlet to the furnace. In summer you close off the inlet to the furnace and open the bypass. In winter you close the middle of the bypass and open the inlet to the furnace (and also turn off the power to the electric heater).

The way you have it now, the hot water loses much of its heat passing through the cold furnace in summertime.

__________________
Forget super sized fries. The Washington Redskins could promote healthy eating with First Lady Obama by choosing a (red skinned) turnip for a mascot.

Last edited by AllanJ; 06-08-2011 at 10:10 AM.
AllanJ is offline   Reply With Quote
Old 06-08-2011, 10:20 AM   #3
Newbie
 
Join Date: Jun 2011
Posts: 2
Rewards Points: 10
Cool

No hot water from water heater unless the furnace is on


Thank you so much for a fast reply!! I will try that and post my results for others to see
karlmarsh is offline   Reply With Quote
Old 06-08-2011, 03:28 PM   #4
Member
 
Join Date: Apr 2008
Location: Northern NJ
Posts: 214
Rewards Points: 150
Default

No hot water from water heater unless the furnace is on


Also check the temperature setting on the electric water heater. It may be set relatively low to act as a pre-heater only with the furnace doing the final temperature rise.

I'd try that first before doing a bunch of replumbing. That said, the heat loss to the furnace may make it worthwhile to do so anyway.
cgoll is offline   Reply With Quote
Reply

Tags
hot water


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
gas fireplace with same vent as furnace & water heater? Van3 HVAC 0 01-30-2011 05:21 PM
Pressure drop across water heater, low hot water flow HVAC_NW Plumbing 2 01-17-2011 11:43 PM
Solar hot water indatom123 Green Home Improvement 0 12-19-2010 01:01 AM
Bosch 1600H Tankless Water Heater natemclain HVAC 13 08-24-2009 11:33 AM
Installing a Tankless Water Heater infoiam Plumbing 4 11-10-2008 10:59 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.