Aerco Benchmark 2000 User Manual

Benchmark 1500 - 2000 Boilers
CHAPTER 3 – OPERATION
Page 52 of 182 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0097_0E
10/01/2015 Ph.: 800-526-0288 GF-142
3.11 START/STOP LEVELS
The start and stop levels are the Air/Fuel Valve positions (% open) that start and stop the unit,
based on load. These levels are Factory preset as follows:
Natural Gas
BMK 1500 BMK 2000
Start Level:
24%
24%
Stop Level:
16%
18%
Normally, these settings should not require adjustment.
Note that the energy input of the boiler is not linearly related to the Air/Fuel Valve position.
The Tables below show the relationship between the energy input and Air/Fuel Valve position.
Table 3-8a: BMK 1500: Air/Fuel Valve Position and Energy Input Relationship
Air/Fuel Valve
Position
(% Open)
Energy Input
(BTU/Hr)
Boiler Energy Input
(% of Full Capacity)
16% (Stop Level)
76,000 (22.3 kW)
5.0%
20%
127,000 (37.2 kW)
8.5%
30%
366,000 (107.2 kW)
24.4%
40%
629,000 (184.3 kW)
41.9%
50%
822,000 (240.9 kW)
54.7%
60%
977,000 (286.2 kW)
65.0%
70%
1,119,000 (327.9 kW)
74.5%
80%
1,255,000 (367.7 kW)
83.5%
90%
1,396,000 (409.0 kW)
92.9%
100%
1,502,000 (440.1 kW)
100%
Table 3-8b: BMK 2000: Air/Fuel Valve Position and Energy Input Relationship
Air/Fuel Valve
Position
(% Open)
Energy Input
(BTU/Hr)
Boiler Energy Input
(% of Full Capacity)
18% (Stop Level)
100,000 (29.3 kW)
6.7%
20%
143,000 (41.9 kW)
11%
30%
388,000 (113.7 kW)
23%
40%
759,000 (222.4 kW)
37%
50%
1,069,000 (313.2 kW)
51%
60%
1,283,000 (375.9 kW)
61%
70%
1,476,000 (432.5 kW)
74%
80%
1,675,000 (490.1 kW)
83%
90%
1,833,000 (537.1 kW)
93%
100%
2,000,000 (586.0 kW)
100%

Aerco Benchmark 2000 Specifications

General

Brand	Aerco
Model	Benchmark 2000
Category	Boiler
Language	English