Navien NCB-180 Installation & Operation Manual page 57

Setting the Supply Absolute MAX Temperature
Display
S psi
R O/R
This menu may be used to make changes to the maximum supply
temperature range when the Supply Control mode is in use. When
configuring the Custom mode in the Outdoor Reset Control mode,
the supply temperature changes based on the supply absolute
MAX temperature range.
Supply Absolute MAX Temperature Range
Range
[MIN Set-point + 36°F (20°C)] ~ 194°F (90°C)
Setting the Supply Absolute MIN Temperature
Display
psi
S R O/R
This menu may be used to make changes to the minimum supply
temperature range when the Supply Control mode is in use. When
configuring the Custom mode in the Outdoor Reset Control mode,
the supply temperature changes based on the supply absolute
MIN temperature range.
Supply Absolute MIN Temperature Range
Range
77°F (25°C) ~ [MAX Set-point - 36°F (20°C)]
56 Operating the Boiler
Description
Supply absolute MAX set point (°F)
Remarks
Default: 180°F
(82°C)
Description
Supply absolute Min set point (°F)
Remarks
Default: 104°F
(40°C)
Setting the Return Absolute MAX Temperature
Display
Return absolute MAX set point (°F)
S psi
R O/R
This menu may be used to make changes to the maximum return
temperature range when the Return Control mode is in use. When
configuring the Custom mode in the Outdoor Reset Control mode,
the return temperature changes based on the return absolute MAX
temperature range.
Return Absolute MAX Temperature Range
Range
[MIN Set-point + 18°F (10°C)] ~ 158°F (70°C)
Setting the Return Absolute MIN Temperature
Display
Return absolute MIN set point (°F)
psi
S R O/R
This menu may be used to make changes to the minimum return
temperature range when the Return Control mode is in use. When
configuring the Custom mode in the Outdoor Reset Control mode,
the return temperature changes based on the return absolute MIN
temperature range.
Return Absolute MIN Temperature Range
Range
68°F (20°C) ~ [MAX Set-point - 18°F (10°C)]
Description
Remarks
Default: 149°F
(65°C)
Description
Remarks
Default: 86°F
(30°C)