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Navien NR-180(A) Operation & Installation Manual page 87

Navien nr-180(a); np-180(a); nr-210(a); np-210(a); nr-240(a); np-240(a) condensing water heater
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Applications:
On all "A" series, there are two pre-heating modes the unit can
operate in: internal recirculation mode or external recirculation mode.
The desired mode is selected by manually adjusting a 3-way valve inside
the unit and adjusting the DIP switches on the PCB board.
87
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Np-180(a)Np-240(a)Nr-210(a)Np-210(a)Nr-240(a)Nr-180 ... Show all

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