Service Manual
1 Service
CAUTION
Before changing parameters, note the settings so that the unit can be returned to its original operating parameters.
Setup Screen:
The Setup Screen allows access to seven (7) other screens for adjusting control parameters.
These screens are as follows:
•Service / Setup - Allows access to change service notification parameters, LCD backlight parameters, and temperature units.
•Night Setback - Allows access to change the date and time and ON/OFF times for night setback.
•Setpoints - Allows access to change the system heat set point, hot water generation set point, and ON/OFF differentials.
•Cascade - Allows access to change the cascade parameters.
•Outdoor Reset - Allows access to change the reset curve parameters.
•Pumps - Allows access to change pump delay timing.
•BMS - Allows access to change the 0 - 10Vdc BMS parameters.
To change a parameter, press one of the seven screen buttons. A list of parameters and their corresponding location are located on pages 11 and 12, Table 1B. Once a Screen button is pressed a list of adjustable parameters will appear.
Select the parameter to be adjusted by pressing the SELECT button next to the parameter. The first time the parameters are accessed, you will be required to enter the service password. The service password is 5309. Using the keypad, enter the password and then press the OK button. If the password is not entered correctly, the screen will revert to the Parameter List Screen and you will not be able to adjust the parameters. If a digit has been entered incorrectly, press the left arrow key on the keypad to back the digit up.
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If the password has been entered correctly, the Parameter Change Screen will appear. The Parameter Change Screen will display the parameter being changed, the previous setting of the parameter, and adjustment buttons.
To adjust the parameter, press the + or - buttons to change the value being displayed. Once the parameter has been adjusted to the desired setting, press the APPLY button to change the parameter and return to the Parameter List Screen. If no further changes are necessary, press the BACK button to return to the Parameter List Screen. Once all the necessary adjustments have been made, press the BACK button to return to the Setup Screen. Repeat this procedure to adjust the parameters in other screens.
Press the SAVE button to program all changes made to the control parameters and return to the Status Screen. Leaving the Setup Screen without pressing the SAVE button will erase the changes made to the control parameters and revert them back to their previous settings.
Time - The time is displayed in the upper
Main button - Pressing this button brings up the Main Screen. From this screen navigation to eight (8) other screens is possible. Reference the Main Screen section on page 17 of this manual for more information regarding this screen.
Save button - Pressing this button will save all changes made to the control parameters.
Status button - Pressing this button displays the Status Screen. This screen shows the current status of the SYNC boiler. Reference pages 13 - 14 for more information regarding this screen.
