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CONTROL FUNCTION
OVER
VIEW
CONTROL FUNCTION OVERVIEW -
CONTROL FUNCTION OVERVIEW - Section F - Boiler Operation
CONTROL FUNCTION
OVERVIEW - SECTION F
BOILER OPERATION
BOILER TARGET TEMPERATURE (Boil TRG)
(See fig. a)
The Boil TRG temperature is determined from the demands
that currently require heat.
• Boiler target temperature is set at least as high as the highest
temperature requirements of the current demands
• The control displays the temperature that it is currently
trying to maintain as the boiler supply temperature in Boil
TRG item in the View Menu
• If the control does not have a current requirement for heat, it
displays “---” in the LCD
BOILER MINIMUM (Boil MIN)
(See fig. b)
The Boil MIN is the lowest water temperature that the
SYSTEMpro 311 is allowed to use as a Boil TRG temperature.
• During mild conditions, if the control calculates a Boil TRG
temperature below Boil MIN setting, Boil TRG temperature is
adjusted to at least the Boil MIN setting
• In this mode, if boiler is operating, and boiler supply
temperature is near Boil MIN setting, the Minimum pointer
appears in the LCD while the Boil TRG or the Boil SUP
temperature is viewed
• If installed boiler is designed for low temperature operation,
set Boil MIN adjustment to OFF
BOILER MAXIMUM (Boil MAX)
(See fig. c)
The Boil MAX is the highest water temperature the control is
allowed to use as a Boil TRG temperature.
• If control calculates target Boil MAX, and Boil SUP
temperature is near Boil MAX temperature, the Maximum
pointer turns on in the LCD while the Boil TRG or the Boil
SUP temperature is viewed
• At no time does the control operate the boiler above 248°F
(120°C).
Section F1: Boiler Supply Sensor
Adjust
o
F
b
Adjust
o
F
c
Access Level
LTD
USER
INST
ADV
Access Level
LTD
USER
INST
ADV
%
View
o
F
1
a
Access Level
LTD
USER
INST
ADV
Summary of Contents for SYSTEMpro 311
Page 1: ...SYSTEMpro 311 Installation Manual...
Page 90: ...88 APPENDIX II APPENDIX II SYSTEMpro 311 Menu Tree...
Page 91: ...89 APPENDIX II APPENDIX II SYSTEMpro 311 Menu Tree...
Page 92: ...90 APPENDIX III APPENDIX III Application Drawings...
Page 93: ...91 APPENDIX III APPENDIX III Application Drawings...
Page 94: ...92 APPENDIX III APPENDIX III Application Drawings...
Page 95: ...93 APPENDIX III APPENDIX III Application Drawings...
Page 96: ...94 APPENDIX III APPENDIX III Application Drawings...
Page 97: ...95 APPENDIX III APPENDIX III Application Drawings...
Page 98: ...96 APPENDIX III APPENDIX III Application Drawings...
Page 99: ...97 APPENDIX III APPENDIX III Application Drawings...
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