OMM-0153_E
• 5/11/2023 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 15 of 124
CENTURION Installation, Operation & Maintenance Manual
SECTION 2: INSTALLATION
2.5 Piping Connections
Make sure the mating surfaces are thoroughly clean, before connecting the hot water outlet and
return-water inlets to building piping.
Centurion Water Heaters have the following inlets and outlets:
•
3
” (7.6 cm) flange water INLET and hot water OUTLET piping.
•
One of the following gas inlet pipes:
o
2” NPT Natural Gas inlet pipe (CEN 2000)
o
1 ½” NPT Natural Gas inlet pipe (CEN 1600)
o
1 ½” NPT Propane Gas inlet pipe (CEN1600/2000
•
8” (20.3 cm) Air Inlet adapter.
CONDENSATE DRAIN
NATURAL GAS INLET
HOT WATER OUTLET
BUILDING RECIRCULATION WATER INLET
(WARMER WATER )
AIR INLET (1 of 2)
COLD WATER INLET
(COOLER WATER)
EXHAUST MANIFOLD
RECIRCULATION LOOP ASSEMBLY
Figure 2-5: Inlet and Outlet Locations