Start/Stop Levels - Air/Fuel & Energy Input - Watts AERCO CFR 1500 Operation And Service Manual

SECTION 3 START SEQUENCE
3.4 Start/Stop Levels – Air/Fuel & Energy Input
The table below shows the relationship between the energy input and A/F Valve position.
TABLE 3-2: Air/Fuel Valve Position – NATURAL GAS
A/F VALVE
POSITION
(% OPEN)
25% (Stop Level)
30%
40%
50%
60%
70%
80%
90%
100%
•
ENERGY INPUT
(BTU/HR)
CFR 3000 CFR 1500
500,000 250,000
620,000 325,000
960,000 570,000
1,350,000 800,000
1,800,000 960,000
2,160,000 1,100,000
2,350,000 1,225,000
2,600,000 1,350,000
3,000,000 1,500,000
• •
BOILER ENERGY INPUT
(% OF FULL CAPACITY)
CFR 3000 CFR 1500
17% 17%
21% 22%
32% 38%
45% 53%
60% 64%
72% 73%
78% 82%
87% 90%
100% 100%