4121 wall mounted digital control overview
Our 4121 digital boiler control, for use with our GB162 boiler, enables you to have optimum control of your heating system.
The 4121 comes supplied with a digital programmer which provides external weather compensation.
Features & Benefits
Optimum control of your GB162 heating system
Comes supplied with a digital programmer
Can control one mixed and one unmixed heating circuits and DHW, while also having the space to allow the connection of an additional module.
External weather compensation
|4121 wall mounted digital control|
|Part number||3 000 891 9|
|Efficiency uplift *||
Can't find the literature you're looking for?
Visit our dedicated literature section where you can search by product name, serial number and more.