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5. Commissioning
5.4 Gas setting
5.4.1. Fuel conversion
WARNING
Only a qualified professional may carry out the
following operations.
The boiler is preset in the factory to operate on natural
gas.
For operation on another group of gases, carry out
the following operations. In the case of functioning on
propane:
1.
MCA Pro For conversion to propane
45
Rotate the adjusting screw A on the
Venturi 4¾ turns in a clockwise direction
65
Rotate the adjusting screw A on the
Venturi 6½ turns in a clockwise direction
90
Propane not available for this model untile
further notice
115
First turn the setting screw A clockwise
until it is closed, then:
Rotate the adjusting screw A on the gas
block 3½ - 4 turns in an counterclockwise
direction
2. Regulate the Fan Speed as indicated in the table
(if required). The setting can be modified using
parameters p17, p18, p19 and p20:
See chapter: "Parameter descriptions", page 75.
3. Set the air/gas ratio. For more detailed information:
See chapter: "Setting the air/gas ratio (Full load)",
page 69.
See chapter: "Setting the air/gas ratio (Part load)",
page 70.
Gas type
MCA Pro 45
MCA Pro 65
MCA Pro 90
MCA Pro 115 1900*
* non factory settings
68
Fan speed setting propane
Sea level
Low fire
High fire
1550
5600
1600
5600
Propane not available for this model until further notice
6600
MCA Pro 45/65/90/115
Altitude application
Start
Low fire
2500
1750*
2500
1800*
2700*
2150*
High fire
Start
5600
2800*
5600
2800*
6600
3100*
MCA-Pro ISM Rv.4.1 2/2017
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