Riverside Hydronics 2000 WB 250A-IF Guía para resolver problemas descargar pdf (Pagina 17)

34-53 08/14

9 TEMPTRAC™ ELECTRONIC CONTROLLER PANEL

9.1 Principle Of Operation

The boiler operates to satisfy the setpoint of the TempTrac digital control whose sensor is located in the return line of

a Hydronic system. Demand (flow) will typically create a drop in temperature, thus activating the Centauri to add heat

to the system. This setpoint is the highest temperature the appliance permits any firing to occur.

9.2 Upper Led Readout

The default display of this readout is the supply temperature sensed in the thermal well at the top of the boiler tank

(Probe 2).

9.3 Lower Led Readout

The default display of this readout is the return water temperature sensed in the thermo well installed in the return

water piping (Probe 1). This is used to regulate the temperature of the boiler.

9.4 Control Buttons

SET

Displays and modifies the temperature set points.

In programming mode, it selects a parameter or confirms an operation.

Displays and modifies the energy saving (Night Time setback) settings.

In programming mode, it browses the parameter codes or increases a displayed value.

DOWN

Displays the working hours of the load relays.

In programming mode, it browses the parameter codes or decreases a displayed value.

CLOCK

Changes lower display from inlet temperature to current time and day.

EXT

Changes upper display from supply temperature to outdoor reset temperature probe (when

installed). Also displays the temperature difference of the return temperature minus supply

temperature. In programming mode it sets the 4-20mA output (password is required).

ON/OFF

Switches the control ON or OFF.

(See TempTrac User Manual 34-80 for full description)

9.5 Modulating Firing Sequence

The boiler is fully modulating and initiates combustion at the lowest firing rate. It will modulate between this lowest

possible rate and full rate as the boiler loop temperature rises and falls in relation to the operating set point. The

Parameters involved with the modulation control sequence are St1, Hy1 St4, and SR.

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Riverside Hydronics 2000 WB 250A-IF Guía para resolver problemas Pagina 17