Navien NaviCirc - Page 39

39
External Recirculation with HotButton (Optional) and NaviCirc
1 2 3 4
ON
SW1
CE1
CE2
U1
C1
C2
C7
R6
PC1
12 V 5 V SIGNAL
SIGNAL 1
GND
R5
R9
R8
C3
R1
R2
R7
D1
CON3
CON5
CON2
CON1
SIGNAL 2
SENSOR I
RA1
HotButton
Kit*
NPE-A2 Water Heater
City Water Supply
Expansion Tank
DHW Supply
Ball
Valve
Wired Push Button*
1 2 3 4
ON
SW1
CE1
CE2
U1
C1
C2
C7
R6
PC1
12 V 5 V SIGNAL
SIGNAL 1
GND
R5
R9
R8
C3
R1
R2
R7
D1
CON3
CON5
CON2
CON1
SIGNAL 2
SENSOR I
RA1
Return Water
Flexible Hoses
Flexible Hoses
NaviCirc
Temperature
Sensor*
Wired Push Button* Wired Push Button*
[NPE-180A2/210A2/240A2]
Note
●
Set the 2-way valve inside the water heater to the
"Ext" position when using the NaviCirc recirculation
valve.
●
It is not necessary to install bypass piping from the
cold line to the recirculation inlet tting for NPE-A2
models.