AERCO AM Series Boiler User Manual - Manual (Page 85)

AM Series Boilers and Water Heaters
CHAPTER 3 – INSTALLATION
OMM-0100_0B AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 85 of 156
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Ph.: 800-526-0288 PRI - 07/14/14
Gas Rating Conversion of Master Burner 1
You must convert Burner 1 (Master) first, and then convert each additional burner in the unit
afterward. Refer to Figures 2-4 and 2-6 to locate Burner 1 (Master) and then perform the
following steps:
1. Turn OFF power to the unit.
2. Gain access to the Factory Menu as follows: press and hold, at the same time, both the
RESET and buttons while turning ON unit power. Display will enter the Factory
Menu (parameters 3000).
3. Using push buttons and select parameter 3002.
4. Press RESET button once to select displayed parameter. Parameter 3002 will begin to blink
in the display. Now the value can be changed using the and buttons.
5. Using Table 3-5, select the right parameter value for the unit you are converting to propane
gas or to natural gas.
Table 3-5: Natural Gas and Propane Gas Settings
6. Press RESET button once to save the new value.
7. Turn the power OFF to the unit.
8. Close the manual gas shut off valve.
9. Remove the covers from the unit.
10. Unscrew nut “H” as per Figure 3-42.
11. Using a screwdriver, remove spring clip “A” (Figure 3-42);
12. Remove the gas valve from its site “C” as per Figure 3-43 (note O-ring “L”).
13. Replace orifice “G” per Figure 3-44, for the correct one for type of gas used. Verify that the
stamping on the orifice matches Table 3-5.
14. Reinstall the gas valve, taking care to properly position O-ring “L” in Figure 3-43 and to
place the gasket between the gas valve and nut “H” in Figure 3-42.
15. Open the manual gas shut off valve.