Flomasta 6259g thermostat

[Tulipa]

Hello,
I have a mechanical Honeywell thermostat and would like to change it for Flomasta 6259g programmable wired battery operated thermostat. It is connected with two wires to a condensing combi boiler.
Could somebody help me how to wire it please. I have two wires brown and blue. Is it okay to put brown into COM and blue into NO?

Also if anybody has personal experience with flomasta, do you know what the temperature swing is on these? Cannot find anything in the manual about it.

Thank you very much for your help.

 

[CBW]

Not sure if you’ve done this yet, but essentially it’s just a switch, so anyway around should work, but if it doesn’t, I’d go blue into Com and brown into NO.

 

[Tulipa]

Thank you, haven't done it yet. I'm back at work foe four days now so hopefully sometime next week I'll have a go at it. Yesterday I read somewhere that live should go into com and the other one into no. Exactly what you suggest, so in my case it would be blue into com and brown into no. So I'm gonna do that. Fingers crossed.
Thank you, I feel more confident having a confirmation from somebody who knows what they're doing, I'm clueless.
Thank you.