7.6 Pump logic
To protect the boiler against corrosion from condensation inside the combustion
chamber, the boiler pump (while the burner is running) will not start until the
boiler water has reached a certain temperature.
The temperature can be set using the "PUMPLOGIC" parameter.
The factory default is 104°F (40°C), which is recommended for cast iron boilers.
Recommendation:
If a condensing boiler is used, the parameter should be set to 60°F (15°C) in
order to make optimum use of the condensing technology.
NOTE: The GB125BE requires a pumplogic of 104°F (40°C) due to its cast iron
primary heat exchanger.
Changing the pumplogic temperature
+
Press the "Display" key and "Install" key at the same time to call up the service
level. "AMERICAN" appears as the first main menu.
Turn the dial until "BLR TEMP" is shown.
Press "Display" to call up a submenu.
"FREEZE TEMP" appears.
Turn the dial until "PUMPLOGIC" is shown.
+
Hold down the "Display" key and turn the dial until the required value appears
(in this case 122°F (50°C)).
Release "Display" to store your input.
Press "ENTER" to return to the next higher level.
Input range Factory setting
Pump logic for
1-stage
2-stage
Modulating burners
60°F – 140°F
(15°C – 60°C)
104°F (40°C)
113°F (45°C)
122°F (50°C)
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications.26
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General data
7
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