Navien NHB-055 Service Manual page 54

Item
(P) Return Absolute
MAX Set-point
(Q) Return Absolute
MIN Set-point
(R) Low Water
Pressure Limit
(U) Zone Controller
Communication
(V) Setting of DHW
Priority Time
54 NHB Service Manual
This menu may be used to make changes to the maximum return
temperature range 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.
Setting range
[MIN Set-point + 18°F(10°C)] ~ 158°F(70°C)
This menu may be used to make changes to the minimum return temperature
range 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.
Setting range
68°F(20°C) ~ [MAX Set-point - 18°F(10°C)]
This menu may be used to make changes to low pressure setting of the space
heating system. Low water level error occurs if the water pressure is lower
than the low pressure value.
Setting range
4-17 PSI
This menu may be used to allow the boiler to work with a zone controller.
Setting range
ON / OFF
Setting of DHW priority time.
Setting range
0 ~ 180min
Description
149°F(65°C)
86°F(30°C)
For Celsius (°C) mode;
ex) at 65°C
For Fahrenheit (°F) mode;
Default
ex) at 149°F
For Celsius (°C) mode;
ex) at 30°C
For Fahrenheit (°F) mode;
Default
ex) at 86°F
If water pressure is 6 psi
psi
Default
6 PSI
T-T Zone Controller Connection
(OFF)
Default
Smart Zone / Ready-Link
OFF
Connection (ON)
In case of Time 30min
Default
30 min
Display
Pri
Version 1.0