Am I Missing Something...like A HWT? - HVAC - DIY Chatroom Home Improvement Forum


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

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

Reply
 
Thread Tools Display Modes
Old 10-18-2011, 11:49 AM   #1
Newbie
 
Join Date: May 2008
Posts: 10
Rewards Points: 10
Default

Am I missing something...like a HWT?


Hi there....

I need help with a seemingly stupid question.

I purchased an old house 2 years ago that had enormous mold and animal smell problems. The good news is that after 2 years, I have a house that no longer makes you want to vomit when you step inside. Eventually, I want to do a full gut of the previously hacked-in electrical & plumbing and install new. But while I'm saving my pennies, I've installed temporary fixtures for my temporary bathroom & temporary kitchen and am getting ready to move into the house. And, my boiler has been recently cleaned and all the steam heating is working without issue.

However, I only have about 30 seconds of hot water before it turns lukewarm (true for the bathtub and both kitchen and bath sinks, both of which have separate hot/cold lines without a mixing valve). And if the boiler hasn't kicked in a couple of hours, I get nothing but lukewarm H2O.

Call me crazy, but is it possible that I'm missing a indirect fired hot water tank off my boiler??? There is not a HWT in my basement, and my boiler doesn't have the small red tank I've sometimes seen hanging off of old boilers. (which I can only assume was a holding tank).

Somehow, during the home inspection (2 years ago) there must have been some hot water. Did I have a dud of a home inspector that missed my lack of a tank? Did the contractor (who did an half *ss job on the basement demo) remove my hot water tank? Is there some sort of internal heater setting on the boiler that needs to be adjusted? Or, do others have indirect heaters without a tank and I have something wrong with my boiler?


It just seems odd because when I recently asked my boiler cleaner guy about hot water (and how the boiler creates/maintains hot water) why didn't he say, duh Jen, you're missing a HW tank...so let me sell you one.


Any help is appreciated.

Thanks

Cold shower Jen who doesn't want to sound like an idiot when I call the plumbing/heating company.....
Attached Thumbnails
Am I missing something...like a HWT?-basementheatingsystem_v1.jpg  

Advertisement

navi_jen is offline   Reply With Quote
Old 10-18-2011, 12:34 PM   #2
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 14,400
Rewards Points: 2,462
Default

Am I missing something...like a HWT?


Yes, you need a holding tank, or an on demand.

Advertisement

__________________
Ren: Now listen, Cadet. I've got a job for you. See this button? Ren: Don't touch it! It's the History Eraser button, you fool! Stimpy: So what'll happen? Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?
gregzoll is offline   Reply With Quote
Old 10-18-2011, 01:39 PM   #3
Newbie
 
Join Date: May 2008
Posts: 10
Rewards Points: 10
Default

Am I missing something...like a HWT?


Hi Greg,

Thanks for the reply. Can you share your thought process of why a holding tank is needed?

(Installing an on demand not really an option given that I am going to tear out all the existing plumbing and replacing/moving the boiler within the next 3 to 5 years)...

Thanks in advance...

Jen
navi_jen is offline   Reply With Quote
Old 10-18-2011, 03:51 PM   #4
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 14,400
Rewards Points: 2,462
Default

Am I missing something...like a HWT?


So, you are saying that you are tearing out all of the plumbing for potable water also? A holding tank would be on the boiler, to hold hot water. An on demand only fires when needed, to supply potable water to the taps, such as shower, bath faucet, kitchen faucet. If it was me, I would go with an electric on demand, if using heating oil for the boiler.
__________________
Ren: Now listen, Cadet. I've got a job for you. See this button? Ren: Don't touch it! It's the History Eraser button, you fool! Stimpy: So what'll happen? Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?
gregzoll is offline   Reply With Quote
Old 10-18-2011, 04:34 PM   #5
Member
 
Join Date: May 2008
Location: Near Philly
Posts: 2,051
Rewards Points: 1,022
Default

Am I missing something...like a HWT?


JEn,
Just a thought; if you trace the hot water line from the laundry tub where does it end up? I would think that is where your hot water is coming from.
bob22 is offline   Reply With Quote
Old 10-19-2011, 01:25 AM   #6
Stuck in the 70's
 
Blondesense's Avatar
 
Join Date: Sep 2008
Location: south central Missouri
Posts: 2,162
Rewards Points: 1,018
Default

Am I missing something...like a HWT?


Where are you?

First of all I'm no expert, but your boiler may not necessarily supply your house hold hot water.
We have a boiler for our hydronic heat -hot water pipes in the floors and baseboard heaters. But we live in Missouri. Today is actually the first time we've fired the thing up since last spring, so our boiler is not connected to the house hold plumbing. We have an electric hot water heater for our household use.

Bob has a point. Can you trace any of the other plumbing lines?
Blondesense is offline   Reply With Quote
Old 10-19-2011, 07:27 PM   #7
Member
 
bubbler's Avatar
 
Join Date: Oct 2010
Location: North Shore MA
Posts: 481
Rewards Points: 250
Default

Am I missing something...like a HWT?


You don't need a tank if you have hot water coil in your boiler. I think I can see the mixing valve in lower corner--it's the black knobbed thing connected to 3 different 1/2" copper lines (cold in (comes from water meter/main), hot tank output (comes out of the boiler), and hot supply (goes out to the hot water taps in the house))

Does your boiler stay hot all the time, 24/7? If not, then you may have a situation where your aquastat has failed, or is incorrect for your application ("cold start" I think it's called?). My boiler w/ a hot water coil stays hot 24/7.

Force your boiler to run by turning on the heat, get it up to temp, then run the hot water... does the water stay hot now? If so, get a plumber in to check the aquastat.

Good luck.

Advertisement

__________________
My advice is based on anecdotal knowledge or personal experience. I'm not a professional no matter how matter of factly I may say something

Last edited by bubbler; 10-19-2011 at 07:32 PM.
bubbler is offline   Reply With Quote
Reply


Thread Tools
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
Goodman CK36-1T a/c that's missing a piece!! 1horsefarm HVAC 10 05-31-2011 10:59 AM
What am I missing? (pic) overland04 Plumbing 1 03-18-2011 01:52 AM
Repairing missing grout in shower stall CLM Tiling, ceramics, marble 14 10-03-2010 11:08 PM
missing bricks on the outside of my house above the front porch roof aredmond Building & Construction 1 10-02-2010 08:34 AM
Goodman Air Handler with Missing Parts cougarhsv HVAC 2 01-17-2007 09:14 PM




Top of Page | View New Posts