AERCO Modulex EXT 321 - 1123 User Manual
Page 72
MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
Table 3-6: Modulex EXT Pressure, CO
2
and O
2
Level Calibration Tables
EXT 321
Gas
Type
Supply
Pressure
Wc (kPa)
CO
2
Level
O
2
Level
Fan Speed
Ǿ Mixer
Injectors
Ǿ in.
(mm)
Min. Gas
Consumption
ft
3
/hr (m
3
/hr)
Max. Gas
Consumption
ft
3
/hr (m
3
/hr)
Start
Output
% IG
(%)
Min.
(%)
Max.
(%)
Min.
(%)
Max.
Min.
(FL)
Max.
(FH)
NOMINAL ALTITUDE
Natural
7 (1.74)
8.5
10
3.1
5.8
31
91
0.27 (7)
45 (1.29)
316 (8.95)
50
Propane
11 (2.74)
10
11
1.3
3.1
30
84
0.27 (7)
18 (0.50)
122 (3.46)
50
HIGH ALTITUDE
Natural
7 (1.74)
8.5
10
3.1
5.8
35
100
0.27 (7)
45 (1.29)
316 (8.95)
50
Propane
11 (2.74)
10.8 10.8
1.3
3.1
30
73
0.27 (7)
18 (0.50)
109 (3.11)
50
EXT 481
Gas
Type
Supply
Pressure
Wc (kPa)
CO
2
Level
O
2
Level
Fan Speed
Ǿ Mixer
Injectors
Ǿ in.
(mm)
Min. Gas
Consumption
ft
3
/hr (m
3
/hr)
Max. Gas
Consumption
ft
3
/hr (m
3
/hr)
Start
Output
% IG
(%)
Min.
(%)
Max.
(%)
Min.
(%)
Max.
Min.
(FL)
Max.
(FH)
NOMINAL ALTITUDE
Natural
7 (1.74)
7.5
10
3.1
5.8
31
91
0.27 (7)
45 (1.29)
474 (13.43)
50
Propane
11 (2.74)
10
11
1.3
3.1
30
84
0.27 (7)
18 (0.50)
183 (5.19)
50
HIGH ALTITUDE
Natural
7 (1.74)
8.5
10
3.1
5.8
35
100
0.27 (7)
45 (1.29)
474 (13.43)
50
Propane
11 (2.74)
10.8 10.8
1.3
3.1
30
73
0.27 (7)
18 (0.50)
164 (4.67)
50
EXT 641
Gas
Type
Supply
Pressure
Wc (kPa)
CO
2
Level
O
2
Level
Fan Speed
Ǿ Mixer
Injectors
Ǿ in.
(mm)
Min. Gas
Consumption
ft
3
/hr (m
3
/hr)
Max. Gas
Consumption
ft
3
/hr (m
3
/hr)
Start
Output
% IG
(%)
Min.
(%)
Max.
(%)
Min.
(%)
Max.
Min.
(FL)
Max.
(FH)
NOMINAL ALTITUDE
Natural
7 (1.74)
8.5
10
3.1
5.8
31
91
0.27 (7)
45 (1.29)
631 (17.87)
50
Propane
11 (2.74)
10
11
1.3
3.1
30
84
0.27 (7)
18 (0.50)
243 (6.88)
50
HIGH ALTITUDE
Natural
7 (1.74)
8.5
10
3.1
5.8
35
100
0.27 (7)
45 (1.29)
631 (17.87)
50
Propane
11 (2.74)
10.8 10.8
1.3
3.1
30
73
0.27 (7)
18 (0.50)
219 (6.23)
50
NOTE
Check the O
2
levels often, especially at low flow rates.
For high altitude installations, consult document number C302.6 (MLX EXT Alt Derate).
Page 72 of 148
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0087_0E
12/01/14
Phone: 800-526-0288
GF-143