Description Description Operating unit B2.2 GW1, GW 2, MW1 HK1W, GR1, Viessmann, 7823986, replaces 7820171 Calotronic 200, Vitotronic 300, 200, 050, 333Manufacturer No.: 7823986( replaces 7820171 ) View AllClose
Add to Cart Quick view Mixer extension CPU GW 2 HK3W MW1 Viessmann Vitotronic, 7826667 replaces 7823213 Viessmann MSRP: Now: £213.62 Was: Mixer extension CPU GW 2 HK3W MW1 Viessmann Vitotronic, 7826667 replaces 7823213 VitotronicManufacturer No.: 7826667( replaces 7823213 )
Add to Cart Quick view Siemens WFZ.R2-1 SIEMENS MSRP: Now: £12.95 Was: Pair of fittings for ??" AG, union nut 1"
Add to Cart Quick view Siemens ASC2.1/18 SIEMENS MSRP: Now: £15.40 Was: Siemens ASC2.1/18 Changeover contact, AC 250 V, 3 A resistive, 2 A inductive, switching at approx. 50 %. ASC2.1/18 - Auxiliary switch for SFA21.../ SFA71.../ SFP21.../ SFP71...
Add to Cart Quick view Siemens XGZ1/2" SIEMENS MSRP: Now: £23.84 Was: Siemens XGZ1/2" Three-ways zone valve, PN10 Datasheet
Add to Cart Quick view Siemens QRA2M(1) SIEMENS MSRP: Now: £142.39 Was: Siemens QRA2M(1) UV flame detector, high sensitivity, with flange/clamp The UV flame detectors are designed for use with Siemens burner controls, forthe supervision of gas or oil flames.The QRA.....