Results 1 to 2 of 2
  1. #1
    Join Date
    Jan 2005
    Posts
    3
    I have a command-aire old-tyme thermostat. It is a mercury controlled analog thermostat. My question is. What is the slide bar inside it? It has numbers on it like 1.2, .8, .7, .6, .5 and so on. What is that for? Does it have to do with how you make the difference or making up the difference between what the thermostat says ond what it really feels like to you? Will it make the unit run a little longer than it does now?

  2. #2
    Join Date
    Sep 2004
    Posts
    51

    Heat Anticipator

    That would be your heat anticipator. It does exctly what it says and will cycle furnace at a differant rate. If incorrectly set it can make your furnace short cycle. Need to take and amp draw on your W wire while your furnace is running and set your heat anticipator accordingly. You may have to wrap a long jumper wire aroung your W wire 10 times to get a reading and then divide that by 10.

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