Watts Aerco Modulex MLX EXT 1530 - Page 69

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).