OMM-0153_E
• 5/11/2023 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 39 of 124
CENTURION Installation, Operation & Maintenance Manual
SECTION 4: START SEQUENCE
The tables below show the relationship between the energy input and Air/Fuel Valve position for
Propane gas.
CEN 2000 Air/Fuel Valve Position
PROPANE
Valve Position
on Controller
Air/Fuel Valve
Position (% Open)
Energy Input
(Btu/Hr)
Water Heater Energy
Input (% Of Full Capacity)
18% (Stop
Level)
18% (Stop Level)
100,000 (29.3 kW)
5%
30%
30%
310,000 (90.9 kW)
15%
40%
40%
550,000 (161.2 kW)
28%
50%
50%
790,000 (231.5 kW)
39%
60%
60%
1,050,000 (307.7 kW)
53%
70%
70%
1,330,000 (389.8 kW)
66%
80%
80%
1,590,000 (466.0 kW)
80%
90%
90%
1,860,000 (545.1 kW)
93%
100%
100%
2,000,000 (586.0 kW)
100%
CEN 1600 Air/Fuel Valve Position
PROPANE
Valve Position
on Controller
Air/Fuel Valve
Position (% Open)*
Energy Input
(BTU/Hr)
Water Heater Energy
Input (% of Full Capacity)
18%
18% (Stop Level)
100,000 (29.3 kW)
6.3%
30%
30%
295,000 (86.5kW)
18%
40%
40%
555,000 (162.7 kW)
35%
50%
50%
795,000 (233.0 kW)
50%
60%
60%
1,040,000 (304.8 kW)
65%
70%
66%
1,195,000 (350.2 kW)
75%
80%
71%
1,325,000 (388.3 kW)
83%
90%
77%
1,475,000 (432.3 kW)
92%
100%
82%
1,600,000 (468.9 kW)
100%
* Maximum Air/Fuel valve open position is 82% of the CEN 2000 Propane.