2-3bOILER SYSTEMS AND OPERATIONVFC 15-150 - VFC 45-225 MODULATING GAS bOILERS2.4.1 User setupthe occupant has access to a number of practical settings. the most meaningfulinclude adjustment of the indoor temperature target plus the temperature setbackand occupied / unoccupied modes. the user Menu also provides access to thetime & date fields, provides the means to toggle between C° / F° plus allowsadjustment of the screen image itself (“Contrast Adjustment”).2.4.2 Installer Setupthe installer has access to all “User” adjustable fields plus a much widerselection of inputs. Loads can be declared and configured, with temperaturesettings appropriate to the characteristics of the heating system.Key issues here are selection of appropriate boiler supply temperature criteria forthe type of emitter, and the establishment of practical temperature differentials(e.g. dHW tank target vs. boiler supply). a record of the service history is alsoavailable for onscreen access.2.4.3 Advanced DiagnosticsNot an access level, this field allows a view into detailed sensor readings andoperating parameters such as fan rpm. this screen is useful for advancedtroubleshooting of pressure sensors, etc.2.4.4 Advanced Setupthis access level is set for the sole use of factory representatives and ispermanently password protected.2.4.5 Passwordsa Password access feature is loaded on the controller, for use in situations wherethere is exposure to unauthorized and / or uneducated adjustment. the installeris encouraged to consult with the user to determine the need for ongoing accessto settings. in risk situations, the password feature can be invoked by selecting“Password On/Off” and toggling to “On” in either or both of the user and installermenus.Pre-set passwords are used:• For the user the code is “11111” followed by “enter”• a common “installer” code is also used, to ensure continuing access even witha change in service personnel. Contact iBC for access to this password.