Page 2 of 2 FirstFirst 12
Results 14 to 18 of 18
  1. #14
    Join Date
    Mar 2008
    Location
    Jackson, NJ
    Posts
    176
    Quote Originally Posted by beenthere View Post
    Dual fuel. The aux only comes on with the HP during defrost.
    With electric aux, they run at the same time, when the HP can't handle the load by itself.
    Or, if the set point is reached outside, the aux runs exclusively if oil/gas. Right?

  2. #15
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,770
    Correct.

    The IAQ does have a droop point that either can run though also.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  3. #16
    Join Date
    Jul 2008
    Posts
    551
    2-stage HP IAQ question. How does the IAQ call for Y1 and Y2? Does it call Y2 at the same time as Y1 when it needs both stages or does it only close Y2 or Y1 but never both at the same time?

  4. #17
    Quote Originally Posted by badtlc View Post
    2-stage HP IAQ question. How does the IAQ call for Y1 and Y2? Does it call Y2 at the same time as Y1 when it needs both stages or does it only close Y2 or Y1 but never both at the same time?
    Both at the same time. If you have the manual, on page 23 there is a chart showing what is energized on what type of call. I've attached below...
    Attached Images Attached Images  

  5. #18
    Join Date
    Jul 2008
    Posts
    551
    Quote Originally Posted by skunkiechris View Post
    Both at the same time. If you have the manual, on page 23 there is a chart showing what is energized on what type of call. I've attached below...
    I have the manual but cant find that. Is it in the installer's manual or the user's manual? That is a really useful table. Thanks.

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event