Baxi Combi LUNA DUO-TEC+ 1.28 GA Supplementary Manual For The Installer page 22

Figure 2: Combi unit connections template
SUPPLEMENTARY INSTRUCTIONS
FOR THE INSTALLER
HANG THE TEMPLATE AT A HEIGHT OF 1642 mm
450 boiler width
MR: central heating delivery G 3/4"
RR: central heating return G 3/4"
GAS: gas inlet G 3/4"
ES: domestic cold water inlet G 1/2"
US: domestic hot water outlet G 1/2"
RS: domestic hot water recirculation G 1/2"
VS: domestic water relief valve
SC: condensate drain
MR
GAS
95 130
US
VS
227,5
37
SC
22
RR
65 65 95
RS ES
7113506
7689373.01 - en