Navien NPE Installation & Operation Manual page 67

Heating MAX Set-point (P.10)
Item Description
Sets the Heating MAX Set-
point when outdoor reset
is ON (DIP switch #1 'OFF')
(Default: 180°F (82°C))
Heating
MAX set- Range: 136°F (57.5°C) –
point 180°F (82°C)
Cannot be lower than the
[CH MIN set-point + 36°F
(20°C)]
Outdoor reset is OFF (DIP
Unavailable
switch #1 'ON')
2-Stage T/S Output Heat-Capacity (P.11)
Models with the 2-stage air handler control function (W1, W2) can
use a 2-stage thermostat or can be automatically controlled by the
+
ComfortAir controller (If the DIP switch # 3 is OFF).
When using the automatic 2-stage heating feature, the system will
modulate between the 1-stage and 2-stage based on the set heat
capacity parameter of the water heater. This heat capacity value
can be adjusted based on the desired modulation point (default
heat capacity is 25%)
Item Description
Sets the standard
modulating heat capacity
Min heat
value between 1-stage and
capacity –
2-stage heating operation
100% (by
0.5% )
2-stage T/S OFF (DIP switch
#3 'OFF')
2-stage T/S ON (DIP switch #3
Unavailable
'ON')
Preheat Pump Output Time (P.12)
Display
Item
1 - 120
(Unit: 1 min)
Maximum
of 5 mins for
On-Demand
Title24.
Pump Fix Protect Period Time (P.13)
Item
1 - 48
(Unit: 1
hour)
Preheat Interval Time (P.14)
Item
1 - 120
(Unit: 1 min)
Display
Preheat Off Offset Temp (P.15)
Item
5°F (3°C) - 54
(30°C)
(Unit: 1°F
(0.5°C))
Settings
error
Description
Set the time for the
preheating operation or on-
demand operation. (Default:
20 Min, Maximum of 5 mins
for On-Demand Title24)
If Cascade is set, the Slave
Unit will be fixed with the
Master value.
Description
Set the pump anti-seize cycle.
(Default: 24 Hours )
Description
Set the preheating interval.
(Default: 30 Min)
If Cascade is set, the Slave
Unit will be fixed with the
Master value.
Description
Set the offset temperature
to turn off the preheating
operation or on-demand
operation. (Title24 OFF)
(Default: 9°F (5°C))
If Cascade is set, the Slave
Unit will be fixed with the
Master value.
Setting is not possible when
On-Demand is on & Title24
is set.
Operating the Water Heater
Display
Display
Display
Display
67