Navien CH-180 Installation Manual - Pcb Board Settings:
PCB Board Settings:
Combination Water Heater / Heating Boiler Temperature Settings:
Hot water temperatures over 125°F can cause severe burns instantly or death
from scalding.
With the Navien Combination Water Heater / Heating Boilers, the temperature has
been preset at the factory to 120°F (49°C) (Only DHW mode). The PCB board will
electronically control this temperature. The output hot water temperature can be
adjusted either manually using the PCB board’s DIP switches or with the remote
controller. Using the dipswitches, 4 hot water output temperature can be selected.
Please refer to the chart below.
Once the remote controller is connected to the combination Water Heater / Heat-
ing Boiler, it overrides the PCB board dipswitch settings. If the remote controller
is disconnected from the unit, the PCB board will automatically revert to the tem-
perature indicated by the dipswitches. The PCB board does not store the remote
controller’s temperature in memory. As such, the remote controller must remain
connected to the Water Heater / Heating Boiler at all times to maintain any tem-
perature other than the 4 presets.
SUPPLY TEMPERATURE SETTING
The Factory default setting temperature 125˚F (51˚C) for Return control mode
.
NOTICE
Warning: Only change relevant switches. DO NOT touch any other switches.
RETURN TEMPERATURE SETTING
Warning: Only change relevant switches. DO NOT touch any other switches.
51
PCB BOARD SETTING