Modulex EXT Commercial Series
CHAPTER 4: Installation Instructions
OMM-0160_A
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4.33.2 Maximum Output Calibration
Locate the gas valves and the Maximum Gas Adjustment screw (A) on each valve. Follow the
instructions below to set the maximum gas output level for each valve.
Adjusting the Maximum (A) Gas Output Setting:
1. Remove the cap of the combustion gases sampling point and connect a suitable gas analyzer.
2. Operate the burner to a minimum power following the procedure described in Section 4.34
"Service Mode" function (MANUAL BOILER FIRING RATE REQUEST: 100%)
3. Check that the CO
2
values are within the values indicated in Table 4-6, below.
4. If necessary, correct
the value by turning the adjustment screw “A” in a CLOCKWISE direction
to decrease the value or ANTICLOCKWISE to increase the value.
5. Repeat the adjustment for all gas valves in the boiler.
A
Maximum
Output Adjust
B
BOILER
TOP VIEW
REAR
FRONT
Minimum
Output Adjust
B
A
Figure 4-23: Location of Minimum and
Maximum Adjustments (Top View)
Summary of Contents for AERCO MLX EXT 1500 2S
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