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SC-3 Controller
Display
Boost - The amount of morning boost.
Press the Menu button until ADJUST is visible on the top line of the display. Press the
Item button until OFF appears with BST below and to the left of OFF.
Keep setting on OFF. This is only used when a setback timer is used.
Contact Slant/Fin if you have any questions.
Boiler 1 - Selects whether or not module 1 is operational - Au (auto) or OFF
DO NOT CHANGE
Press the Menu button until ADJUST is visible on the top line of the display. Press
Item button until BOIL to the left of, and above Au and 1 is below it. Use the up and down
arrow buttons to change to the desired setting. However for the setting of Au should be
retained, do not change to OFF.
Boiler 2 - Selects whether or not module 2 is operational - Au (auto) or OFF
DO NOT CHANGE
Press the Menu button until ADJUST is visible on the top line of display. Press the
Item button until BOIL to the left of, and above Au and 2 is below it. Use the up and down
arrow buttons to change to the desired setting. However, the setting of Au should be
retained, do not change to OFF.
Boiler 3 - Selects whether or not module 3 is operational - Au (auto) or OFF
If you do not have 3 boiler modules
Press the Menu button until ADJUST is visible on the top line of the display. Press the
Item button until BOIL to the left of, and above Au and 3 is below it. Use the up and down
arrow buttons to change to OFF.
Outdoor design - The design outdoor temperature used in the heat loss calculations for
OUT
the heating system.
DSGN
Press the Menu button until ADJUST is visible on the top line of the display. Press the
Item button until OUT and DSGN appear. Use the up and down arrow buttons to change
to the desired setting.
Range Available: -60˚ to 45˚F (-51˚ to 7˚C)
Boiler Indoor - The design indoor air temperature used in the heat loss calculation for the
heating system.
Press the Menu button until ADJUST is visible on the top line of the display. Press ITEM
button until BOIL and INDR appear. Use the up and down arrow buttons to change to the
desired setting.
Boiler Design - The design supply water temperature used in the design of the system.
Press the Menu button until ADJUST is visible on the top line of the display. Press the
Item button until BOIL and DSGN appears. Use the up and down arrow buttons to change
to the desired temperature.
Range Available: 70˚ to 220˚F (21˚ to 104˚C)
Boiler Minimum - The minimum allowed boiler target temperature for Slant/Fin cast iron
boilers we recommend 130˚F minimum.
Press the Menu button until ADJUST is visible on the top line of the display. Press the
Item button until BOIL and MIN appears. Use the up and down arrow buttons to change to
the DESIRED SETPOINT temperature -140˚F or more.
Range Available: OFF, 80˚ - 180˚F (OFF, 27˚ - 82˚C)
SPACE HEATING ONLY WITH OUTDOOR RESET
Description
14
Default
New
Setting
Setting
OFF
Au
Au
Au
10˚F
(-12˚C)
70˚F
(21˚C)
180˚F
(82˚C)
140˚F
(60˚C)
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