Issues With Junk Tankless HWH. Need Another Solution - Plumbing - DIY Home Improvement | DIYChatroom


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

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

Reply
 
Thread Tools Display Modes
Old 10-09-2010, 10:45 PM   #1
Member
 
Join Date: Jul 2009
Posts: 198
Rewards Points: 150
Default

Issues with junk tankless HWH. Need another solution


I bought and installed a smaller Paloma tankless unit last year. Since then, I have had nothing but cussing to say about it. The unit is supposed to deliver .6-1.6gpm. The max flow is NOT my problem right now even though I know it is sized a bit small. Problem is the MIN flow rate. .6gpm is just too damn much and the unit just LOVES to shut off in the middle of a shower even with the hot side all the way on!! Basically the shower head is 1.5gpm as soon as you bring the cold water in, it causes enough restriction in the hot side to shut it off so 2 min into your shower, it goes cold.

I am beyond pissed about the design and most retail idiots do not know enough to even be selling them. The one I have actually throttles the water flow rather than the gas as a good design should so when you turn it up hotter, it does not provide more gas to the burners, it just slows the water rate to a dribble. I absolutely need to find something that can handle less min flow rate. Right now, I literally have to turn on the sink faucet a little to flow enough hot water to keep the shower going. Friggin RIDICULOUS.

I have asked several retailers about how theirs is designed and get VERY little technical info on them. I want to know the nuts and bolts before making another mistake. Again, my MAX flow is not my issue right now, it is the MIN side turn on that is my frustration.

Advertisement

viper is offline   Reply With Quote
Old 10-10-2010, 07:56 AM   #2
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,976
Rewards Points: 2,048
Default

Issues with junk tankless HWH. Need another solution


I think it needs enough minimum flow to hold the gas valve open (pressure plate inside the pipe) and keep the burner running.

Advertisement

__________________
Forget super sized fries. The Washington Redskins could promote healthy eating with First Lady Obama by choosing a (red skinned) turnip for a mascot.
AllanJ is offline   Reply With Quote
Old 10-10-2010, 11:15 PM   #3
Member
 
Join Date: Sep 2010
Location: Massachusetts
Posts: 77
Rewards Points: 75
Default

Issues with junk tankless HWH. Need another solution


rheem/ruud offers tankless water heaters with a .26 minimum flow rate and .40 minimum activation flow rate.

also, 1.5 gpm is for a shower head is considered low flow. while great for water conservation, it's hurting you. have you tried looking for maybe a 2.5gpm shower head?

although not ideal, maybe a higher flow head could hold you over until you get a different heater.
moopey 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
Navien CR-240a tankless water heater issues PoWn3d_0704 Plumbing 20 05-07-2013 07:09 PM
Need to run gas line to Tankless Water Heater. anonymouscuban Plumbing 2 04-16-2010 03:56 PM
tankless in walk-in closet? philS Electrical 10 02-01-2009 12:28 PM
Tankless coil in oil-fired boiler lebeld Plumbing 4 01-18-2009 09:48 AM
Tankless hot water heater??? psychocandy Plumbing 1 03-22-2007 11:41 PM




Top of Page | View New Posts