Navien NPN Installation & Operation Manual page 46

10-switch Panel:
●
Switch Function
Off Natural Gas
Gas
1
Type
On Propane Gas
Recirculation Mode-
3
External Pump Connected**
4 Display Temperature Unit
5 Well Pump
6 DHW Storage Tank
7 Commercial Lock
8 Limescale Detection Alarm
9 & 10 High Altitude ***
This water heater may be installed at elevations up to 10,100 ft (3,078 m) for use with Natural
Note
Gas and Propane. To use the water heater at a specific altitude, the DIP switches should be set as
described above.
CAUTION
Do not configure the system for DHW recirculation when it is configured to run an air handler using the
H2Air controller. DHW recirculation and Navien H2Air configurations cannot be used at the same time.
Setting
This can only be selected when the power is on
or when the DIP switch error has been solved.
Preheating*
Celsius
Fahrenheit
Well Pump Operation
Do Not Use Well Pump
Storage Tank Operation
Do Not Use Storage Tank
Temperature can be set.
Temperature cannot be set.
Disable the limescale detection alarm. 8: OFF
Use limescale detection alarm.
(12 month interval)
0–1,999 ft (0–609 m)
2,000–5,399 ft (610–1,645 m)
5,400–7,699 ft (1,646–2,346 m)
7,700–10,100 ft (2,347–3,078 m)
Remark
* Preheating:
Preheating starts when remote
●
controller is not connected.
When remote controller is
●
3: ON
connected, preheating starts and
operates based on the timer.
4: ON
Set the timer on the remote
●
controller to use hot water at the
4: OFF
time of your choice.
5: ON
Preheating does not function in
●
Cascade Mode (Preheating OFF).
5: OFF
Freeze protection is still available
●
6: ON
with preheating OFF.
**External Pump:
6: OFF
These settings are to be used when
7: OFF
an external pump is wired to the
water heater.
7: ON
***High Altitude
Above 2,000 ft (610 m), the water
heater will de-rate by 3% with
Natural Gas and by 4% with
8: ON
Propane for each 1,000 ft (305 m) of
altitude gain.
9: OFF,
10: OFF
9: ON,
10: OFF
9: OFF,
10: ON
9: ON,
10: ON
Installing the Water Heater 45