AERCO Modulex EXT 1530 - 3060 - Manual (Page 69)

MODULEX EXT 1530, 1912, 2295, 2677, 3060 BOILERS
Installation, Operation & Maintenance Manual
3.37 Conversion from Natural Gas to Propane Gas
To convert the unit to use propane gas, instead of natural gas, do the following:
Converting From Natural Gas to Propane Gas
1. Set nominal heat by adjusting the fan speed parameter FH (FAN MAX) from the E8
controller as shown in Table 3-7, MODULEX EXT Pressure and CO
2
Level Calibration
Tables in section 3.3. This parameter requires a password to change.
2. Adjust CO
2
(%) minimum and maximum levels according to the type of gas as shown in the
table below. See section 3.33 - Burner Calibration, above, for more information.
Gas Type CO
2
Level (%) Minimum CO
2
Level (%) Maximum
Natural Gas 8.5 10
Propane Gas 10 11
3. After gas conversion to propane and calibration, the gas installer should complete and apply
this label, or equivalent, as close to the rating label as possible:
Figure 3-33: MODULEX EXT Label
OMM-0095_0E AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 69 of 138
GF-139 Phone: 800-526-0288 12/01/14