Connections data sheet (Model with upper flue gas outlet)
M = Ø ¾” F GAS SYSTEM FLOW
R = Ø ¾” M GAS SYSTEM RETURN
C = Ø 14 mm DOMESTIC HOT WATER OUTLET (on prepared models only)
F = Ø 14 mm DOMESTIC COLD WATER INLET
S = Ø 100 mm M FLUE OUTLET
A = Ø 50 mm AIR SUCTION DEVICE