Setting a Navien controller on a NPE unit

On a Navien NPE series unites there highly efficient condensing ones the controller needs to be set for proper operation. If it just an S2 model you only need to program the date and time, the gas type and altitude because there is no internal pump built into the unit. On the A2 models you will need to program the above plus the circulation method your customer would like.
As far as the factory reset this should only be performed by a licensed plumber trained in Navien Level 3 training.
I have found that the intelligent setting works the best out of all the settings.
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Mike
PLEASE HAVE A LICENSED PLUMBER TRAINED IN NAVIEN LEVEL THREE TRAINING INSTALL AND SERVICE YOU UNIT.PLEASE FOLLOW ALL STATE AND NATIONAL PLUMBING AND GAS CODES AND TO FILE A PERMIT AND OBTAIN AND INSPECTION WITH YOUR LOCAL BUILDING DEPARTMENT.