34 – Part 3: Solar water heater system installation
Programming system controller
!
IMPORTANT
The factory default settings on the solar system controller OPERATION MENU is OFF -- this prevents system pumps from
operating until the system has been commissioned. To turn on the system, change the setting to AUTOMATIC (Active)for
normal operation.
1. To enter the programming mode, press the forward
button to show the Main Menu Navigation Menu.
System controller operation
During normal operation the controller will function as
follows:
1. Controller display will show the basic system diagram.
− T1 will indicate the current collector temperature
− T2 will indicate the tank bottom temperature
− P1 will indicate pump speed (0 = Off/100 = On)
2. When temperature T1 is 12°F hotter than T2, the
system will begin transfering heat to the solar tank.
− Pump symbol will rotate on display
− Sun symbol will be displayed
− P1 will indicate pump speed (100 = On)
(The active menu is highlighted in black at the top of the
display.)
2. Use the or buttons to navigate up and down in the
menus. The selection cursor will indicate the current
submenu. Navigate down until the cursor is to the left of
the Operation submenu.
Press the button to enter the Operation submenu.
The factory default setting is Off (Active).
3. With the cursor to the left of Automatic, press the
button. The display will change to Automatic (Active),
which is the normal operating mode.
4. Press the button repeatedly until the display
returns to the main screen.
