TT configuring Honeywell R7284

Reply

  #1  
Old 01-18-21, 09:19 AM
G
Member
Thread Starter
Join Date: Jan 2021
Posts: 4
Received 0 Votes on 0 Posts
TT configuring Honeywell R7284

Do I select YES or No when programming the "TT CONFIGURED ON" option when the 2 TT terminals are jumped with a wire?
 
  #2  
Old 01-18-21, 10:05 AM
Grady's Avatar
Forum Topic Moderator
Join Date: Jan 2005
Location: Delaware, The First State
Posts: 14,359
Received 32 Votes on 30 Posts
You don't need to jumper T-T if the control is set to "NO". By setting the control to NO, the T-T terminals are ignored and jumpered internally. Is this control used on a boiler or warm air furnace?
 
  #3  
Old 01-18-21, 11:22 AM
G
Member
Thread Starter
Join Date: Jan 2021
Posts: 4
Received 0 Votes on 0 Posts
Thank you for your quick response. It is a Slant Fin boiler. What would happen if I used the jumper and said "NO" to the TT configuration? Thank you.
 
  #4  
Old 01-18-21, 11:28 AM
Grady's Avatar
Forum Topic Moderator
Join Date: Jan 2005
Location: Delaware, The First State
Posts: 14,359
Received 32 Votes on 30 Posts
I don't think any harm would be done since the internal "jumper" is being used. BUT I couldn't swear to that. Am I correct in presuming you are replacing an R8184 which had T-T jumped with the R7284?
 
  #5  
Old 01-18-21, 05:31 PM
G
Member
Thread Starter
Join Date: Jan 2021
Posts: 4
Received 0 Votes on 0 Posts
I replaced a R7184B with the R7284U. No one wants to work on fuel oil boilers where I live. So I'm becoming a doityourselfer.
 
  #6  
Old 01-18-21, 06:37 PM
Grady's Avatar
Forum Topic Moderator
Join Date: Jan 2005
Location: Delaware, The First State
Posts: 14,359
Received 32 Votes on 30 Posts
It's getting the same around here too. Slant Fin heat exchangers are a bear to clean properly, or at least were when I worked on them.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: