Image is for illustration only and should not be relied upon Siemens REV24 Hardwired Programmable Thermostat

Siemens REV24 Hardwired Programmable Thermostat

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£82.79

Ex VAT: £68.99

HCO Code: 03C03

Availability: In Stock

Replaces obsolete Landis & Gyr (Landis & Staefa) Chronogyr models REV10, REV11, REV12, REV15, REV16, REV20, REV21, REV22, REV23, REV32

The new REV24 digital room thermostat from Siemens are designed for straightforward operation and a high level of reliability. Improved design ensures that the new products are even more user-friendly and - thanks to very accurate room temperature control - offer enhanced comfort while providing even greater energy efficiency. The new thermostats from Siemens are suited for any type of heating application and excel in a very good price-performance ratio.

User-friendly features include:
* Program selection slider
* Extremely bright high-contrast backlit display
* 7-Day programming
* Over-ride functions
* Holiday mode
* Party mode
* Frost and overheating protetion
* Information level for checking settings
* Sensor calibration
* Can be used for heating or cooling
* Pump/valve protection
* Optimum Start
* Automatic Summer/Winter time change
* Dimensions: 94x135x30mm HxWxD
* 6(2.5)A SPDT Volt-Free contacts

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My Rev24 for some reason is not offering me options for block or day choice. Don't know if need replacement or missing something. All other options works ok. Do I need a new one? If yes is there smart thermostat option as easy replacement that will not require rewire? Answers1

It does sound like it needs to be replaced. HCO code 07A28 would be a suitable smart upgrade that will connect to the same 2 wires.

Hello, I have a REV 20 currently. Would this be a good replacement as the 20 is very outdated now. Can the REV 24 easily be wired into the existing REV20 wall mounting I have? Answers1

Hi. You will need top change the backplate (a new one is included), but it will connect to the same 2 wires for an easy swap.

Can the REV24 also replace the REV17? Answers1

Yes it can.

I have a 3 years old Vaillant ecoTEC350f combi boiler control by Vaillant VRT350f wireless thermostat. I have had problems with the heating starting up at times and temperatures when it shouldn't. I feel that a hard-wired control system would be better. Will the Rev 24 do the job and do I need any other equipment to go with it? Answers1

Yes it will be fine. You will not need anything else.

I have a Siemens rev23 which does display only a few characters: would this rev24 product use the exact same box than the rev23, I mean , could I interchange both products without changing the part on the wall? Answers1

You will need to change the wallplate, but it will connect to the same 2 wires.

I currently have a Vemver Eco W thermostat controlling my boiler. Can you tell me if the REV24 uses the same wiring to the boiler (a straight swap, with a change of back plate)or will there be some rewiring? Answers1

It will connect to the same wires as the Vemer.

Will Siemen's REV24 get fitted into the same wall socket of the existing wall socket of my old Landis & Gyr REV21? Answers1

You will need to replace the backplate, but it will connect to the same 2 wires.

How do I control the rev24 remotely Many thanks Answers1

It has two terminals on the back that when connected together override the thermostat. You can connect this to an appropriate device for remote control.

I'm looking to replace my Siemens RDJ10 with this, is the wiring the same? Do I just need to replace the backplate? Answers1

You will need to change the backplate, but it will connect to the same two wires.

Does the frost protection still work when running in automatic mode or only in frost protection mode? Answers1

Yes, it will protect against frost in automatic mode.

Siemens have told me that the REV24 is battery powered and does not need mains power.It is also a 2 wire unit. Is this the one you have. Will it fit the REV15 backplate Answers1

Yes it is. You will need to change the backplate, but the screw terminals are in the same place - so it's a simple swap.

Will the Rev24 slot into the same base as the Rev13 and work without any re-wiring? Answers1

Yes it will.

Will this replace the rev10 model and will it require the same 2 cables or new wiring? Answers1

Yes it will. It will connect to the same 2 wires.

Hi, I need to replace a 15 year old Siemens L&S REV11. Am I able to replace it with the REV24? Thanks In advance, Jonathan Stanley Answers1

Yes you can. It will connect to the same 2 wires.

I'm installing a REV24 in place of a Honeywell CM907. There are two wires from the boiler (Vaillant ecoTech 837), red which goes to terminal A on the Honywell and yellow, with a red sleeve, which goes to teminal B. Please could you confirm which terminals on the REV24 should be used (i.e. is it: red to L and yellow to L1?) Many thanks in advance Answers1

Yes that's correct.

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It does sound like it needs to be replaced. HCO code 07A28 would be a suitable smart upgrade that will connect to the same 2 wires.

Hello, I have a REV 20 currently. Would this be a good replacement as the 20 is very outdated now. Can the REV 24 easily be wired into the existing REV20 wall mounting I have? Answers1

Hi. You will need top change the backplate (a new one is included), but it will connect to the same 2 wires for an easy swap.

Can the REV24 also replace the REV17? Answers1

Yes it can.

Yes it will be fine. You will not need anything else.

You will need to change the wallplate, but it will connect to the same 2 wires.

It will connect to the same wires as the Vemer.

Will Siemen's REV24 get fitted into the same wall socket of the existing wall socket of my old Landis & Gyr REV21? Answers1

You will need to replace the backplate, but it will connect to the same 2 wires.

How do I control the rev24 remotely Many thanks Answers1

It has two terminals on the back that when connected together override the thermostat. You can connect this to an appropriate device for remote control.