Navien NPE-180A2 Installation Manual page 34

HotButton DIP Switch Information
SW1
ON
1 2 3 4
CE2
CE1
U1
RA1
C1
C2
C7
R6
PC1
DIP SW OFF
Enable the
1
HotButton.
Enable the energy
2
saver function.
3 Reserved
4 Reserved
HotButton DIP SW1
Note
●
- Enable or disable the HotButton
function.
- Default: Enabled (OFF)
HotButton DIP SW2
●
- Enable or disable the energy saver
function.
- Default: Enabled (OFF)
- The energy saver function limits the
operation time of the recirculation
system to reduce energy usage. This
function may be required to remain
enabled to meet local building
code regulations.
34 Installing the Water Heater
SW1
ON
1 2 3 4
CE2
CE1
U1
RA1
ON
Disable the
HotButton.
Disable the energy
saver function.
Reserved
Reserved
3.4.5 System Application - External
Recirculation
The following diagram shows the recirculation
system's basic operation of an NPE-A2/S2 series
water heater system with the Navien NaviCirc and
Navien HotButton kit with or without a dedicated
return line.
The NPE-A2/S2 series water heaters
Note
●
have a built-in Navien HotButton
controller (the push button, wall
plate, and temperature sensor must
be purchased separately).
Install the NaviCirc to the faucet
●
farthest from the water heater. If
installed in close proximity to the
water heater, faucet pipes far away
may not be properly heated.
For details, refer to the manual
●
provided with the NaviCirc kit.
The Navien HotButton can be used
●
ONLY with a water heater system
configured for DHW recirculation.
All other recirculation functions will
●
be disabled.