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Honeywell Thermostat RTH221B



Do You Know About These Manuals?

  • Posted by garnet88 on Apr 3rd, 2014 at 9:34am

    how to set my thermostat RTH221B
    how to set my thermostat RTH221B
  • Posted by rjemmert on Apr 23rd, 2011 at 6:14pm

    HONEYWELL T STAT RTH221B INSTALL Man
    Need Install Man fir RTH221B. THX
  • Posted by mrflattail on Feb 2nd, 2011 at 5:09pm

    Please help find the manual for this Honeywell Thermostat
    how to program it
  • Posted by mrflattail on Feb 2nd, 2011 at 5:09pm

    Please help find the manual for this Honeywell Thermostat
    how to program it
  • Posted by rcplg on Nov 7th, 2010 at 6:37pm

    Please help find the manual for this Honeywell Thermostat
    PLEASE HELP FIND MANUAL FOR THIS MODEL NUMBER LISTED ABOVE.
  • View All

Can You Help With These Problems?

  • Posted by on Oct 24th, 2013 at 3:51pm

    I just purchased a RTH221B thermostat rated at 30
    I just purchased a RTH221B thermostat rated at 30 watts but the ventilation fan I plan to use it with is rated at 35 watts. If this is not okay, what model thermostat should I get? Thanks, David
  • Posted by wfwfitz on Oct 27th, 2011 at 4:16pm

    I need to connect the thermostat.
    I need to connect the thermostat.
  • Posted by kristen.hart on Oct 4th, 2008 at 1:17pm

    renter needs manual so I can program it
    I am renting in a condo and I have no manual for the Honeywell thermostat...from the photos online it looks like I have a RTH221B, it is a 1 week programmable thermostat. Seems to have 4 times a day to set, but I have no idea how to program it. The temperatures are not set to what we want, and I want to reporgram it but have no manual.

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