Vaillant Transformator 287450 VC 104/3-E VC 105/2 E VC 105/3-E (R1) VC 194/2 XE-C VC 194/3-C VC 195/2 E-C VC 195/3-C (R1) VC 204+254/2 XE VC 204+254/3-E VC 205+255/2 E VC 205-255/3-E (R1) VC 64+104/2 XE VCW 194/2 XE-C VCW 194+244/3-C VCW 195/2 E-C VCW 195/3-C (R1) VCW 204+254/2 XE VCW 204+254/3-E VCW 205+255/2 E VCW 205+255/3-E (R1) VK 114-474/8-E VK 654-1654/9 VK 84-564/1-C VKO 246 (R1) VKO 248-648/5 VKO unit 179-309/5-B VKO unit 179-509/5 VKO unit 179-509/5 R2 VKS 114-264/8-E