Image is for illustration only and should not be relied upon Siemens (Landis & Staefa) RWB29Si Programmer

Siemens (Landis & Staefa) RWB29Si Programmer

1 reviews

£61.99

Ex VAT: £51.66

HCO Code: 02B03

Availability: In Stock

* Complete with new backplate * Daily 5/2 Day or 7 Day Programming
* Two or three ON/OFFs per day
* Independent timing for HW and CH
* Gravity or Fully Pumped systems
* Advance and +3 hour (boost) facilities
* LED 'ON' lamps and user friendly backlitdisplay
* Dimensions (on wall): 80x135 HxW
* Dimensions (overall): 90x145x34mm HxWxD
* Large Screen
* Holiday Programming
* Menu Driven Programming

Replaces (same backplate and wiring for easy swapover):
Landis & Gyr (Landis & Staefa) RWB1, RWB102, RWB2, RWB2.9, RWB40, RWB200, RWB200cw, RWB252, RWB252cw, RWB270, RWB9, RWB-XP, RWB29.
Microgyr 1, 102, 2, 40, 200, 200cw, 252, 252cw, 270, 9, XP.
Gloworm (Glowworm) MasterMind
Potterton Miniminder Miniminder E
Sankey Sunline
Crossling Controller
Wickes RWB2/6832, RWB200.cw, RWB252.cw, RWB2E.cw, RWB9.cw.
Boss Therm RPF7, RP24, BUP, BUP2
British Gas EMP1, EMP2, UP1L
Sunvic Select 207, 207XL, 207XLS, Simplex 200, Sunpro 2000
Honeywell C21 C27.
Newlec NLC21 NLC27.
Horstmann CentaurPlus C21, C27
Honeywell C21 C27.
Newlec NLC21 NLC27

Replaces RWB20 / Microgyr 20 (same backplate) but may require the addition of a neutral connection

Compatible alternatives with same backplate & wiring:
Siemens RWB2E - 24 hour mechanical programmer

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Is there a substitute for Horstman S27R , and if so, does anything else need to be added to replace that model? Answers1

This is a plug on replacement. If the service interval feature is required, you will need to contact Siemens for instructions to set it up.

Does this replace RWB9 without wiring alterations? Answers1

Yes it does.

Is it possible to replace a Horstman Centaur plus C27 series 2 programmer with this programmer without altering the wiring, thanks John Answers1

Yes it is.

Is RWB29Si a correct replacement for Siemens RWB9 Answers1

Yes it is.

I have had a rwb29 for many years with no problems. Just had the boiler changed so power off for an hour or so and rwb29 lost all the settings so I believe its battery had failed. Is it possible to get a new battery and if so what? Answers1

It is a normal CR2032 available at any supermarket.

I have just installed this as supplied and want to leave it in On mode but notice there's a setting for CH, HW or CH+HW, whereas my old one would simply advance the water to On if CH was advanced to On. Is this due to dip switch 5 setting? I thought HW had to be set on if CH is set on.
I have a system boiler with a motorised valve next to the immersion which switches depending on hot water or radiator demand.
The failed Rwb9 was set to gravity but I believe this system is fully pumped, that is when either demand beat the boiler pumps water (RemehaAp Avanta). Answers1

Yes, it is because it is set to fully pumped. A fully pumped system can handle them independently, so it obviously more efficient to do so. It does sound like you have a fully pumped system.