High Altitude Adjustment - Watts AERCO EXT Installation, Operation & Maintenance Manual

Modulex EXT Commercial Series
CHAPTER 4: Installation Instructions

4.35 High Altitude Adjustment

It is necessary to adjust the fan speed at altitudes at or above 5,000 feet. Modify parameter 526
(FU: Fan maximum speed) of the BMM in the Devices Menu.
NOTE: This is modifiable only with an access code.
Access the BMM Menu by selecting the BMM buttons. See Section 6.7 for a list of BMM
Parameters.
Scroll to parameter 526 and change value. Refer to appropriate model and fuel on table 4.6.
Repeat the above procedure for the rest of the burners (bmm 2 to bmm7, depending on model).
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