Intergas Eco RF vs HRE

[Razor900]

That is what I thought - the T6 appears to just switch the boiler in and out - simple and crude on-off control not modulating the burner. Using one of those stats, you may as well hook up the outside temperature sensor to modulate the burner, as Intergas boilers work with either the outside weather compensation or the Opentherm internal room thermostat - not both. That means buying a non-RF Intergas combi (which are cheaper) if using the T6 - may as well use the cheaper and very good Heatmiser RF stat and save again.

The Intergas RF manual does not mention the Honeywell T6 but mentions other compatible Opentherm RF stats. That does not mean much as the manual could be out of date as new stats arrive on the market.y to the stat

EDIT: Found that the T6R does do Opentherm via RF, but needs a power supply to the stat, so not wireless really. The T6R appears to be a roomstat you put on the sideboard.

Oh dear, you can't have OpenTherm over RF and the low modulation control profile of the T6 is the best on the market right now but you keep on googling you way into a deeper hole

 

[hard-work]

Oh dear, you can't have OpenTherm over RF and the low modulation control profile of the T6 is the best on the market right now but you keep on googling you way into a deeper hole

Dan says you can:

All T6 are OpentTherm

 

[hard-work]

By Honeywell. Go to, 27 secs. It says, "OpenTherm terminals".

 

[Dan Robinson]

Razor has missed a vital punctuation mark.

 

[hard-work]

The fitting instructions of the T6R (RF) even shows how to wire it up for OpenTherm.
"C) Wiring for OpenTherm boiler":

https://homecomfort-techlit.resideo...07/lyric-t6r-ig-en1h32308181-001uk07r1216.pdf

The Intergas tech specs state that the Xtreme, Xclusive and RF combis have the Honeywell RF receiver board fitted inside - hence not in a separate box as can be purchased with a T6R.

 

[Dan Robinson]

For the second time. The X and Eco Boilers have a different RF to the T6. Unless something has changed on the X series @Razor900?

 

[Razor900]

No @Dan Robinson honeywell still haven't released Ramses III to us but we've left space on the board for both...



HW you stated that the T6 does opentherm over RF it doesn't

In fact nothing does OT is a wired protocol. The thermostat communicates with the base unit by RF and then the base unit communicates with the boiler via a wired OT connection

A little knowledge eh?

 

[Dan Robinson]

Google only has so much information.

 

[hard-work]

In fact nothing does OT is a wired protocol. The thermostat communicates with the base unit by RF and then the base unit communicates with the boiler via a wired OT connection

OpenTherm is a digital protocol that is all. Just like when you plug your computer into the modem, the Ethernet 802 family of protocols are used. Ethernet was only via cable initially, then sent by wireless later - many reading this will be on wireless modems. OpenTherm, which has little demand put upon it compared to Ethernet, as the data packets are very small, with small levels of data being transmitted. OpenTherm can easily, efficiently and quickly be transferred over a wireless signal as demands are light - overheads are light. The base unit transfers the protocol from wireless to hard wired copper.

1. Wall stat to a base RF receiver, then;
2. Hard wired from the base RF receiver to a boiler's pcb;

The OpenTherm protocol still moves, through the air and copper wires. As with Ethernet, the OpenTherm protocol does not care by what medium it is transmitted. Running through the air or through a copper wire the protocol is just a string of bits.

What you are saying is that the base unit can only switch the boiler on-off, but using the OpenTherm protocol right back to the boiler's pcb. If only using on-off control, using OpenTherm is totally and utterly pointless.

 

[Razor900]

I suggest you actually read the OT protocol, you clearly don't have a clue what you're talking about........

 

[hard-work]

From someone who worked on the Ethernet family of protocols and and also X.25 packet switching, at bits and bites level in a research project for the EU, you bet your boots I know what I am talking about. Read again what I wrote.

 

[Dan Robinson]

The base unit transfers the protocol from wireless to hard wired copper.

Nope.

What you are saying is that the base unit can only switch the boiler on-off,

No he's not.

If only using on-off control, using OpenTherm is totally and utterly pointless.

It would be if that's what it did .


How many wireless Opentherm controllers have you found then?

 

[vulcancontinental]

The protocol is manipulating current in one direction and voltage in the other so wired. Master to slave then slave to master in response.

Communication can be from master to slave wired direct or by RF encoded in one of several other protocols from master to receiver then translated to OpenTherm for the last or part of the journey or first part of the return trip.

 

[snb]

Dan how does the isense Rf open therm controller work?

 

[Dan Robinson]

As VC said - the RF will be proprietary. The final link to the boiler will be OT via the base station.