Stimmen - 2, Durchschnittliche Bewertung: 3.5 ( )

Hersteller: Lochinvar Dateigröße: 2.49 mb Dateiname: 04b74426-feaa-4b92-8da4-5bb4f345f859.pdf Unterrichtssprache:

The parameter NOTICE references listed in this section will not appear on the LCD screen. Before changing parameters, note the CAUTION settings so that the unit can be returned to its original operating parameters. A: Initial Setup Clock and Date The control uses an internal clock for the night setback feature and for logging of events. For these features to work correctly, the clock must be set when the boiler is first installed or anytime the boiler has been powered off for more than four (4) hours. This parameter must be accessed to set the clock. Parameter A2 sets the date. The internal clock does not adjust for NOTICE Daylight Savings Time and therefore, will require a manual adjustment. Parameters A3 -A12 shown in the Initial Setup Menu are grouped here for convenience. For a detailed explanation of each parameter, reference the specific menu for each parameter. B: Set Points Space Heating (SH) Minimum Set Point The SH minimum set point sets the minimum water temperature set point that can be used for space heating operation. The user or installer will not be able to program the control with a lower SH set point. This parameter can only be changed by the installer by accessing parameter B1. Space Heating (SH) Maximum Set Point The SH maximum set point sets the maximum water temperature set point that can be used for space heating. The user or installer will not be able to program the control with a higher SH set point. This parameter can only be changed by the installer by accessing parameter B2. Space Heating (SH) Set Point The SH set point sets the water temperature set point used during space heating calls. This parameter can be changed by the installer by accessing parameter B3. SH Offset The SH offset sets how many degrees above set point the temperature can go before the boiler will shut off. This parameter can only be changed by the installer by accessing parameter B4. SH Differential The SH differential sets how many degrees below the offset the temperature has to drop before the boiler turns back on. This parameter can only be changed by the installer by accessing parameter B5. HWG Tank Set Point By installing a tank sensor, the SMART TOUCH control can perform the tank thermostat function. The SMART TOUCH control automatically detects the presence of this sensor, and generates a call for heat when the tank temperature drops below the tank set point minus the differential (parameter B7), and finishes the call for heat when the tank temperature reaches tank set point. This parameter can be changed by the installer by accessing parameter B6. HWG Tank Differential When a tank sensor is installed, the tank temperature must drop this amount below the tank set point (parameter B6) before the boiler will turn on. The installer can adjust this setting by accessing the parameter B7. Manual Reset High Limit The SMART TOUCH control contains an integral Manual Reset High Limit (MRHL) on the outlet of the heat exchanger. Once the outlet temperature exceeds the MRHL set point, the boiler will shut down and lock out. Once the outlet temperature has dropped below this set point, the RESET button on the LCD display must be pressed to clear this lockout. This set point can be adjusted by accessing parameter B8. Auto Reset High Limit The SMART TOUCH control contains an integral Auto Reset High Limit (ARHL) on the outlet of the heat exchanger. Once the outlet temperature exceeds the ARHL set point, the boiler will shut down and lock out. Once the outlet temperature has dropped below this set point, the RESET button on the LCD display can be pressed to reset this lockout. If RESET is not pressed, the control will automatically reset the lockout after five (5) minutes. This set point can be adjusted by accessing parameter B9. Service Manual 1 Service (continued) HWG Minimum User Set Point This setting controls the minimum user set point for the tank temperature. The installer can adjust this by accessing parameter B10. HWG Maximum User Set Point This setting controls the maximum user set point for the tank temperature. The installer can adjust this by accessing parameter B11. HWG Boiler Set Point When a HWG call for heat becomes active, the control will use the HWG boiler set point to determine the firing rate of the boiler based on the boiler outlet water temperature. This parameter can be changed by the installer by accessing parameter B12. HWG Boiler Offset This parameter reflects the degrees above HWG boiler set point the outlet temperature can go before the boiler will shut off. This parameter can be changed by the installer by accessing parameter B13. HWG Boiler Differential This parameter reflects the degrees below HWG boiler offset the outlet temperature has to go before the boiler turns on. This parameter can be changed by the installer by accessing parameter B14. C: Outdoor Reset SH Set Point at Low Outdoor Temperature When the outdoor air temperature drops to or below the Low Outdoor Temperature setting ...

Herunterladen

Geben Sie zwei Ziffern: