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

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 12-24-2011, 04:02 AM   #1
Newbie
 
Join Date: Dec 2011
Posts: 1
Share |
Default

Baffaled with 1950's Reznor US-100 F unit heater 100,000 BTU


I have a 1950's Reznor 100,000 BTU unit heater, natural gas, i want to convert it to LP, it is a discontinued model, no kits available. while searching for conversion kit on-line thought i found the right one, cant find anywhere to de-code serial number, (BE4N1356) new kit came with size 55 orifices for LP, while i was investigating this, i see the NG orifice is size 45, new kit came with 6 orficies, waited to take heater apart untill new kit showed up, orifices totally different, wont fit so kept looking on-line to figure this out, googled what size orficies are in a 100,000 BTU heater, i found a useful website, asked how many burner orficies are in my heater, it has 4 burner orficies, website said size 55 for LP and 54 for NG, problem is my 1950's Reznor unit heater has size 99 burner orficies. im baffeled. where do i go from here. why are they so big? i cant find anything. any information would be greatly appreciated. thnks matt!!

ncmoko333 is offline   Reply With Quote
Old 12-24-2011, 09:47 AM   #2
Member
 
Join Date: Feb 2007
Location: NW Ohio
Posts: 804
Default

Baffaled with 1950's Reznor US-100 F unit heater 100,000 BTU


Quote:
Originally Posted by ncmoko333 View Post
I have a 1950's Reznor 100,000 BTU unit heater, natural gas, i want to convert it to LP, it is a discontinued model, no kits available. while searching for conversion kit on-line thought i found the right one, cant find anywhere to de-code serial number, (BE4N1356) new kit came with size 55 orifices for LP, while i was investigating this, i see the NG orifice is size 45, new kit came with 6 orficies, waited to take heater apart untill new kit showed up, orifices totally different, wont fit so kept looking on-line to figure this out, googled what size orficies are in a 100,000 BTU heater, i found a useful website, asked how many burner orficies are in my heater, it has 4 burner orficies, website said size 55 for LP and 54 for NG, problem is my 1950's Reznor unit heater has size 99 burner orficies. im baffeled. where do i go from here. why are they so big? i cant find anything. any information would be greatly appreciated. thnks matt!!
Put it at the curb.............let the scrappers have it.

harleyrider is offline   Reply With Quote
Old 01-18-2013, 06:03 PM   #3
Newbie
 
Join Date: Jan 2013
Posts: 1
Default

Baffaled with 1950's Reznor US-100 F unit heater 100,000 BTU


I have a retiring Reznor LUS-100-F Natural Gas heater, serial HE903L818. The valve to the pilot light does not work, and the fan motor is slow starting when the garage is cold, but you can have free of charge any part on it provided you pay shipping. Let me know if you're interested within the next few days before the trash man finds it. Your post is a couple years old, but I hope this helps. Contact me direct at <Email address has been removed by a Moderator>.

Last edited by beenthere; 01-18-2013 at 06:47 PM. Reason: removed email address
arney907 is offline   Reply With Quote
Old 01-31-2013, 03:40 AM   #4
Newbie
 
Join Date: Jan 2013
Posts: 1
Default

Baffaled with 1950's Reznor US-100 F unit heater 100,000 BTU


I have that exact same model furnace in my garage and I cant figure where the pilot light is and how to light it.It has not been used for along time but Im sure it still works. Any help would be appreciated thanks.
hawkblade is offline   Reply With Quote
Old 01-31-2013, 08:40 AM   #5
Member
 
Join Date: Sep 2011
Location: western Ny
Posts: 1,243
Default

Baffaled with 1950's Reznor US-100 F unit heater 100,000 BTU


Quote:
Originally Posted by hawkblade View Post
I have that exact same model furnace in my garage and I cant figure where the pilot light is and how to light it.It has not been used for along time but Im sure it still works. Any help would be appreciated thanks.
If it has a pilot light then there will be a small diameter (1/4") tube and a thin brass tube (1/16") coming from the gas valve leading to it. Trace it out and see what you have.
danpik is offline   Reply With Quote
Old 01-31-2013, 12:07 PM   #6
Member
 
Join Date: Jul 2012
Location: Toronto ON
Posts: 599
Default

Baffaled with 1950's Reznor US-100 F unit heater 100,000 BTU


You may have to remove front cover plate OR lower bottom cover plate to locate burners and pilot assembly.
techpappy is offline   Reply With Quote
Old 01-31-2013, 12:11 PM   #7
Member
 
Join Date: Jul 2012
Location: Toronto ON
Posts: 599
Default

Baffaled with 1950's Reznor US-100 F unit heater 100,000 BTU


I do not have an orifice conversion chart but, propane has about 1 1/2 more btu's/cfm than NG so, it would make sense that the required orifice size to convert from NG to LP would be a lot lower so, 99 to 55 sounds reasonable. May also require new gas pressure regulator.

techpappy is offline   Reply With Quote
Reply


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
Ruud Pack unit "KABOOMS" upon First Light Up of the Day! Wirenut2tite HVAC 18 12-15-2012 10:11 AM
Help with Heater Unit BenJoeM HVAC 8 11-15-2008 05:16 PM
Electric question from power pole to unit Slocalaman Electrical 3 11-06-2008 03:23 PM
central unit will not come on ....please help guyasc HVAC 5 08-24-2008 05:10 PM
New Heater Vibration captainron19 HVAC 4 01-06-2008 02:41 PM




Top of Page | View New Posts

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