Navien NHB-055, Service Manual

Page: 45 / 147

NHB Service Manual 45 Version 1.0
Item Description Display
(Y) Temperature for exhaust
gas 2.
Indicating current exhaust gas
2 temperature.
For Celsius (°C) mode;
ex) at 30°C
For Fahrenheit (°F) mode;
ex) 100°F
(Z) CH Demand
Indicating current heating
Demand.
In case of CH Demand Off
In case of DHW Demand On.
(1) DHW Demand Indicating current DHW Demand.
In case of DHW Demand Off.
In case of DHW Demand On
(2) Heating set temperature.
Indicating current heating set
temperature.
For Celsius (°C) mode;
ex) at 60°C
For Fahrenheit (°F) mode;
ex) 120°F