Navien NCB-180, Service Manual

Page: 41 / 149

38 NCB Service Manual Version 1.0
3. You can adjust the temperature while the display is
flashing. Once the display stops flashing, the temperature
setting is stored.
NOTE

Take note of the original heating temperature in case
you want to restore it to the default.

The default space heating supply water temperature
range is 104°F (40°C, Absolute MIN) to 180°F (82°C,
Absolute MAX).

The default space heating return water temperature
range is 86°F (30°C, Absolute MIN) to 149°F (65°C,
Absolute MAX).
 You can adjust the temperature range in the
parameter settings menu.

The boiler will retain your settings during a power
outage.
4.4.7 Adjusting the DHW Temperature
WARNING
Before adjusting the water temperature, read
“
To
prevent burns:
”
on page 9 carefully. Water above 120
°
F
(52
°
C) can cause instant scalding, severe burns, or death.
To adjust the water temperature:
1. Make sure that all hot water faucets are closed, and ensure
that the internal circulator and any external circulating
pumps are off.
2. Press the Mode button twice. The DHW mode icon turns
on.
3. Press + (Up) or
–
(Down) buttons until the desired
temperature appears on the display.
4. You can adjust the temperature while the display is
flashing. Once the display stops flashing, the temperature
setting is stored.
Temperature range
Adjusting the water
temperature
86~120
°
F (Fahrenheit mode)
30-50
°
C (Celsius mode)
1
°
F or 1
°
C increments
120~140
°
F (Fahrenheit
mode)
50-60
°
C (Celsius mode)
Press for 2 seconds to
adjust in 5
°
F or 2
°
C
increments
NOTE
The boiler will retain your settings during a power outage.