Navien NPE-180A2 Installation Manual page 93

Category Item
4. AHU Outdoor
High Temp
5. AHU SH MIN
Set-Point
3. Air Handler Unit
6. AHU SH MAX
Set-Point
7. AHU 2Stage
T/S Output
92 Operating the Water Heater
Description
Set the outdoor
high temperature
when AHU and
the outdoor reset
function are ON.
Setting range:
●
Outdoor Low
Temp+9 °F
(5 °C) - 104 °F
(40 °C)
Default: 70 °F
●
(21 °C)
Set the space
heating minimum
temperature
when AHU and
the outdoor reset
function are ON.
Setting range:
●
100 °F (37.5
°C) - 140 °F (60
°C) or [SH Max.
Set-point–36 °F
(20 °C)]
Default: 100 °F
●
(37.5 °C)
Set the space
heating
maximum
temperature
when AHU and
the outdoor reset
function are ON.
Setting range:
●
CH Min. Set-
Point+36 °F
(20 °C) - 185 °F
(85 °C)
Default: 180°F
●
(82 °C)
Set the heating
capacity to turn
on the 2-stage
T/S output when
AHU is ON and
2-stage T/S
output is OFF.
Setting range:
●
Min. heating
capacity -
100%
Default: 25%
●
Category Item
1. Fixture
Distance
2. Recirc Interval
Time
4. HotButton
(Manual recirc)
3. Recirc off Diff.
Temp
Description
Set the pipe length
to the desired
position for virtual
turn-off function
using the internal
thermostat when
the external
HotButton surface
temperature
sensor is not
installed.
Setting range:
●
15 ft (4.5 m) -
660 ft (198 m)
Default: 30 ft
●
(9 m)
Set the
recirculation
duration.
When the
●
energy saver
function is
disabled
- Setting range:
1-120 min.
(set in 1 min.
increments.)
- Default: 20 min.
When the
●
energy saver
function is
enabled
- Setting range:
1-5 min.
(set in 1 min.
increments.)
- Default: 5 min.
Set the
Recirculation
Off offset
temperature.
When the
●
energy saver
function is
disabled
- Setting range:
5 °F (3 °C)-
54 °F (30 °C)
(set in 1 °F
[0.5 °C]
increments.)
- Default: 9 °F
(5 °C)
When the
●
energy saver
function is
enabled
- This setting is
not adjustable.