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Best low voltage(millivolt) two wire, heat only thermostat?

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  • Nov 4th, 2018 10:20 am
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[OP]
Newbie
Jul 14, 2017
48 posts
2 upvotes
Ontario

Best low voltage(millivolt) two wire, heat only thermostat?

Hi:
I am looking to replace my Lux Pro thermostat for my Napoleon gas stove in the rec-room....looking for a low voltage (battery),non-programmable,two wire,heat only,wall mount thermostat.
I am currently looking at this one on Amazon.ca: https://www.amazon.ca/Honeywell-TH1100D ... 000&,which is back-ordered....the usual places(HD,Lowes,CTC,HH,Rona) don't seem to carry this one??....any other one I should be looking at? Thanks,Huck50
Last edited by Huck50 on Nov 4th, 2018 8:45 am, edited 1 time in total.
8 replies
Member
Jan 19, 2013
329 posts
155 upvotes
613
Get a used mercury thermostat, basically no parts to fail!
No batteries, no nonsense
The one you listed is pro model.
B&M stores only carry retail versions of honeywell
[OP]
Newbie
Jul 14, 2017
48 posts
2 upvotes
Ontario
1chinaman wrote:
Nov 4th, 2018 12:21 am
Get a used mercury thermostat, basically no parts to fail!
No batteries, no nonsense
The one you listed is pro model.
B&M stores only carry retail versions of honeywell
Thanks...it may be a Pro model,but it is the only one they make that is the 'basic' one that works for me and it is be battery powered,which is what I need.Thanks,Huck50
Temp. Banned
Dec 19, 2009
3500 posts
1485 upvotes
Huck50 wrote:
Nov 4th, 2018 5:52 am
Thanks...it may be a Pro model,but it is the only one they make that is the 'basic' one that works for me and it is be battery powered,which is what I need.Thanks,Huck50
Why do you need a battery powered thermostat?
[OP]
Newbie
Jul 14, 2017
48 posts
2 upvotes
Ontario
pootza wrote:
Nov 4th, 2018 8:56 am
Why do you need a battery powered thermostat?
That's the way it was hooked up originally by the installer...I don't have any a.c drop down voltage transformer,hardwired close by,like my main Lennox furnace upstairs and I don't feel like running new wire in the wall,plus hooking up a transformer. Maybe that's all my stove's gas valve can handle (millivolt)...I dunno.
Everything works now,just the temperature Up/Down buttons don't work.They are set at 73 degrees,so I only have to turn the stove on and off...no bigee.Huck50
Temp. Banned
Dec 19, 2009
3500 posts
1485 upvotes
Huck50 wrote:
Nov 4th, 2018 9:17 am
That's the way it was hooked up originally by the installer...I don't have any a.c drop down voltage transformer,hardwired close by,like my main Lennox furnace upstairs and I don't feel like running new wire in the wall,plus hooking up a transformer. Maybe that's all my stove's gas valve can handle (millivolt)...I dunno.
Everything works now,just the temperature Up/Down buttons don't work.They are set at 73 degrees,so I only have to turn the stove on and off...no bigee.Huck50
The battery has nothing to do with the operation of the stove ... it's the powerpile in the pilot that produces the 750MV to make the stove operate.
[OP]
Newbie
Jul 14, 2017
48 posts
2 upvotes
Ontario
pootza wrote:
Nov 4th, 2018 9:29 am
The battery has nothing to do with the operation of the stove ... it's the powerpile in the pilot that produces the 750MV to make the stove operate.
According to the on-line manual,it uses a "millivolt remote control gas valve".Thanks
Temp. Banned
Dec 19, 2009
3500 posts
1485 upvotes
Huck50 wrote:
Nov 4th, 2018 9:55 am
According to the on-line manual,it uses a "millivolt remote control gas valve".Thanks
Yes the gas valve on the stove is a millivolt gas valve not a 24 volt gas valve and the heat from the pilot on the thermopile generates 750 mv which goes through your thermostat and opens the gas valve. All the battery does is operate the light and the features on the thermostat.
Either or these will work and they don't have any of that other BS which you don't need.

https://www.rona.ca/en/750-mv-thermostat-p0522071

https://www.amresupply.com/part/T827K10 ... 50mv-WHITE

And as 1chinaman stated if you can find the old mercury bulb type stat, they were the best. The Honeywell model was TS822A.

https://www.manualslib.com/manual/71019 ... e=2#manual
[OP]
Newbie
Jul 14, 2017
48 posts
2 upvotes
Ontario
pootza wrote:
Nov 4th, 2018 10:07 am
Yes the gas valve on the stove is a millivolt gas valve not a 24 volt gas valve and the heat from the pilot on the thermopile generates 750 mv which goes through your thermostat and opens the gas valve. All the battery does is operate the light and the features on the thermostat.
Either or these will work and they don't have any of that other BS which you don't need.

https://www.rona.ca/en/750-mv-thermostat-p0522071
Thanks! Huck50
https://www.amresupply.com/part/T827K10 ... 50mv-WHITE

And as 1chinaman stated if you can find the old mercury bulb type stat, they were the best. The Honeywell model was TS822A.

https://www.manualslib.com/manual/71019 ... e=2#manual

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