Description CX150 CX199
A Flue Outlet 3" Schedule 40 or 3" PP (80
mm)
3" Schedule 40 or 3" PP (80
mm)
B Combustion Air Inlet 3" Schedule 40 or 3" PP (80
mm)
3" Schedule 40 or 3" PP (80
mm)
C Boiler Return Water Inlet 1" NPT-M 1" NPT-M
D Boiler Supply Water Outlet 1" NPT-M 1" NPT-M
E Condensate Outlet ¾" Hose ¾" Hose
F Gas Inlet ½" NPT-F ½" NPT-F
G DHW outlet (hot water) ¾" NPT-M ¾" NPT-M
H DHW inlet (cold water) ¾" NPT-M ¾" NPT-M