Navien NR-180(A) Operation & Installation Manual page 48

5.Case V. DHW Storage Tank Mode
Install the storage tank and pump in the exterior, and when it comes to exterior circulation
pump control system(Aqua-stat) that are controlled by the temperature of the tank, setup
to exterior DHW storage tank usage mode.
[Example: DHW Storage Tank Installation]
Hot Water Supply Line
Hot Water Supply Line
48
Aquastat
T
Storage Tank
[1 Unit + DHW Storage Tank ]
Slave n-15
Aquastat
T
Storage Tank
Hot
A
[Cascade System + DHW Storage Tank]
Remote Controller
(NR-10DU)
Hot Cold Gas
Slave n-1
Communication Cable
Cold Gas Hot Cold Gas
B B
Gas Supply Line
Cold Water Supply Line
Remote Controller
(NR-10DU)
Master
Hot Cold Gas
B
Gas Supply Line
Cold Water Supply Line