Navien NHB-055 Service Manual page 53

Item
(L) Space Heating
Burner OFF
Differential
(M) Space Heating
Burner ON
Differential
(N) Supply Absolute
MAX Set-point
(O) Supply Absolute
MIN Set-point
Version 1.0
During space heating, the boiler turns off the burner when the space heating
supply temperature meets or exceeds the burner-off temperature.
Setting range
2 ~ 54°F(1 ~ 30°C)
During space heating, the boiler turns on the burner when the space heating
supply temperature is below the burner-on temperature.
Setting range
2 ~ 54°F(1 ~ 30°C)
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.
Setting range
[MIN Set-point + 36°F(20°C)] ~ 194°F(90°C)
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 MIN temperature range.
Setting range
77°F(25°C) ~ [MAX Set-point - 36°F(20°FC)]
Description
Default
4°F(2°C)
Default
5°F(3°C)
180°F(82°C)
104°F(40°C)
For Celsius (°C) mode;
ex) at 2°C
For Fahrenheit (°F) mode;
ex) at 4°F
For Celsius (°C) mode;
ex) at 6°C
For Fahrenheit (°F) mode;
ex) at 10°F
For Celsius (°C) mode;
ex) at 82°C (feed water control)
For Fahrenheit (°F) mode;
Default
ex) at 180°F
For Celsius (°C) mode;
ex) at 40°C
For Fahrenheit (°F) mode;
Default
ex) at 104°F
Display
NHB Service Manual 53