NTI TRX User's Information Manual

Also see for TRX: Installation, start-up, maintenance, parts, warranty

Contents

NTI TRX User's Information Manual Manual pdf 12 page image

12Part 2 - Operating InstructionsThe room temperatures (both zones 1/2) can be set to differentsetpoints. These setpoints become effective with the selectedoperating mode and the time program, so that differenttemperature levels can occur in each zone. The range ofadjustable target values is limited by their interdependence,which can be seen in the accompanying graph.Daily setpoint (comfort), factory setting 70°FNight setpoint (reduced), factory setting 61 °FL. Room temperature Day /Night(Only applicable when using NTI room sensor)M. Time programs – heating schedule(Only applicable when using NTI room sensor)The end user can choose from five predefined time programs toheat according to his wishes. When a time program is activated,the boiler will operate in the desired time periods to maintainthe room temperature at comfort temperature level. Outsidethese periods, the boiler operates at a reduced temperaturelevel.0-24h Mo-Su 00:00 – 24:00P1FamilyProgramMo-Th 06:00 – 22:00Fr-Sa 06:00 – 23:00Su 07:00 – 22:00P2ProgramwithoutlunchMo-Th 06:00 – 08:00 16:00 – 22:00Fr 06:00 – 08:00 15:00 – 23:00Sa 07:00 – 23:00Su 08:00 – 22:00P3ProgramwithlunchMo-Th 06:00 – 08:00 11:30 – 13:00 16:00 – 22:00Fr 06:00 – 08:00 11:30 – 23:00Sa 06:00 – 23:00Su 07:00 – 22:006-22h Mo-Su 06:00 – 22:00EXT Time program defined by external source (app or roomunit). The details can not be displayed on the boilerdisplay.Time program defined by external source (app or room unit).The details can not be displayed on the boiler display.Time programs heating are active only with NTI RoomThermostat or SensorTable 4 - Time programs heatingNOTICEN. Automatic summer / winter changeoverWhen this function is activated, the boiler automaticallyswitches from “winter” mode ( + ) to “summer” mode( ), based on outdoor temperature conditions.This means that the appliance can independently activate ordeactivate the heating mode.The criteria for the change are:If the outdoor temperature is more than 1°F above the desiredsummer / winter switchover temperature during 5h (delaytime), the boiler goes from winter to summer mode.If the outdoor temperature is more than 1°F lower than thedesired summer / winter switchover temperature during 5h(delay time), the boiler will go from summer to winter mode.Summer / winter changeover temperatureExternal temperature criterion to switch from winter operationto summer operation, factory setting is 68 °F.Figure 9 - Day and Night setpoint