Piazzetta Monia External Programable Thermostat

[Jchandu]

Is it possible to run a Monia off an external programable thermostat, such as a Honeywell Home? According to the manual you can connect an External T stat but what wires do you use?

I have connected two wires to the N-H2O ports and connected those two wires to the W &R terminals on the Honeywell T Stat.

The Room Temp wire on the machine is removed.

Room Temp set to 7 Degrees

Energy Savings Mode is off.

still, the Honeywell TStat will not control the Monia.

what am I doing wrong.

thanks

 

[Pelleting In NJ]

There is typically a setting in a stove menu to change from internal to external wired thermostat.

If it is a "Smart" or electronic thermostat, did you connect a 24VAC transformer to the Honeywell, to power it?

The transformer should connect to the R and C thermostat terminals, and the jumper between the R and the Rh terminal must be removed. Then the stove should be connected to the Rh and the W thermostat terminals.

Which model thermostat is it?

 

[Jchandu]

There is typically a setting in a stove menu to change from internal to external wired thermostat.

If it is a "Smart" or electronic thermostat, did you connect a 24VAC transformer to the Honeywell, to power it?

The transformer should connect to the R and C thermostat terminals, and the jumper between the R and the Rh terminal must be removed. Then the stove should be connected to the Rh and the W thermostat terminals.

Which model thermostat is it?

This is a Honeywell Home, programable thermostat.

No, I did not connect a 24VAC transformer to the TStat.

There is 5 VDC coming from the Monia stove when turned on.

I could not find any menu option to turn on external TStat.

 

[Pelleting In NJ]

OK, some more info:
- There is no menu setting for this on the Monia.
- The thermostat must be connected to the terminals marked "TERM", not the "N-H2O" terminals.
- Did you remove the jumper wire/link on the thermostat?
- "Honeywell Home" is not a specific model number....they call all their thermostats "Honeywell Home"...what is the specific model number?
- The thermostat won't work without 24VAC power....

 

[Phil Do's fire.]

I have a Piazzetta Sveva anybody have any Idea if the stove uses a Millivolt thermostat?

 

[Whitenuckler]

You will want a thermostat that takes batteries, and the output will be a dry contact (as they all are).The only difference is that some can accept 24VAC and no battery, some you have the option of either.

 

[Phil Do's fire.]

Thanks for the info. Please correct me If i am wrong, Isn't A Dry thermostat the same as a mechanical millivolt thermostat? These are dry contact

 

[Whitenuckler]

Thanks for the info. Please correct me If i am wrong, Isn't A Dry thermostat the same as a mechanical millivolt thermostat? These are dry contact

Yes that would be the same. "Dry" contacts simply mean they are not connected to anything electrically. It is confusing, but when they use the term millivolt thermostat, they mean the contacts can be connected to a heat control, and the thermostat does not need 24VAC to work. It will be like an old type mercury tube type, or a new one with a battery inside. Pellets stoves are not like furnaces, they do not have 24VAC to send to a thermostat.

 

[Phil Do's fire.]

I really appreciate the help, Thank you! I have been reading online that I have to access the Installer menu to flip a switch for external thermostat. I read posts on how to access this on my stove, but none seem to display the actual menu. Any idea? Thanks again!

 

[Whitenuckler]

I really appreciate the help, Thank you! I have been reading online that I have to access the Installer menu to flip a switch for external thermostat. I read posts on how to access this on my stove, but none seem to display the actual menu. Any idea? Thanks again!

https://us.piazzetta.com/sites/default/files/2019-09/MONIA%202.0_Product%20Information_Installation_Maintenance.pdf

page 27 is all I see for hardware install besides the board layout on page 37.
There must be other instruction on the display. You probably need to find the information on the installer menu and password