Modulex EXT Commercial Series Boilers User Manual
CHAPTER 4: Installation Instructions
OMM-0095_0H
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
69
of
144
GF-139
Phone: 800-526-0288
09/15/2017
TABLE 4-6: EXT Pressure, CO
2
and O
2
Level Calibration Tables
EXT 2677 / 2600
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
26
84
0.35 (9)
79.8 (2.26)
2565 (72.6)
50
Propane
11 (2.74)
10
11
1.3
3.1
26
82
0.35 (9)
32.4 (0.92)
1042 (29.5)
50
HIGH ALTITUDE
Natural
7 (1.74)
8.5
10
3.1
5.8
28
100
0.35 (9)
79.8 (2.26)
2565 (72.5)
50
Propane
11 (2.74)
10.2
10.6
1.3
3.1
26
76
0.35 (9)
32.4 (0.92)
938 (26.6)
50
EXT 3060 / 3000
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
26
84
0.35 (9)
79.8 (2.26)
2932 (83.0)
50
Propane
11 (2.74)
10
11
1.3
3.1
26
82
0.35 (9)
32.4 (0.92)
1191 (33.7)
50
HIGH ALTITUDE
Natural
7 (1.74)
8.5
10
3.1
5.8
28
100
0.35 (9)
79.8 (2.26)
2639 (82.9)
50
Propane
11 (2.74)
10.2
10.6
1.3
3.1
26
76
0.35 (9)
32.4 (0.92)
1072 (30.3)
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).