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