Mastertrol T-stat change out question
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  1. #1
    Join Date
    Oct 2009
    Location
    New Jersey
    Posts
    164

    Mastertrol T-stat change out question

    Have a customer with an old 2 zone Honeywell Trol-A-Temp mini-zone 2 control. She wants to change Tstats to digital. My problem is with the zone 1 tstat. The O and B terminals used by the control to change over from heat to cool on zone 1 tstat base. What digital tstat will work with this control?

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    33,833
    Any stat that has BOTH O & B which is getting hard to find. The old W-R 1F80-361 did if you can still find. Or maybe it is time to put the TAT out to pasture!

  3. #3
    Join Date
    Oct 2009
    Location
    New Jersey
    Posts
    164
    So will any heat pump tstat work?

  4. #4
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
    Posts
    4,568
    Honeywell Pro4211
    Aire Serv of SW Connecticut- Gas heat, dual fuel and central a/c systems installed and serviced

  5. #5
    Join Date
    Aug 2008
    Location
    Burlington , Mass
    Posts
    465
    I'll be there when I get there and not a minute later

  6. #6
    Join Date
    Oct 2009
    Location
    New Jersey
    Posts
    164
    Thanks guys!

    I have Honeywell pro 3000 & 4000 series (HP version) on the van. She is on my schedule for Friday AM and these will fit her budget.

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