Navien NaviCirc Installation And Operation Manual page 19

Wired Wired
push button push button
Flexible
hoses
NaviCirc NaviCirc
Flexible
hoses
Expansion tank*** Expansion tank***
Flexible
hoses
Flexible
hoses
Note
A branch from the cold water line must
be connected to the RECIRCULATION
RETURN water connection located on
the water heater. Additionally, the end
user might experience lukewarm water
when first opening the cold water tap.
Maximum recirculation pipe lengths:
100 feet (approx 30 m) equivalent
●
length of ½" copper pipe
400 feet (approx 120 m) equivalent
●
length of ¾" copper pipe
* The HotButton kit is sold separately.
** Solenoid valve not required under
most conditions. Temperature
fluctuations may occur during high
system flow rates.
*** Expansion tank only required if a
check valve is installed on the cold
water supply line or if required by
local codes.
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