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2. Application System
2.1 NPE-A System
2.1.1 Application Guidelines
See the installation guidelines below for additional instructions.
1. Locate the 10-switch set of dipswitches on the front panel and
verify that DIP SW2 is ON for EXTERNAL recirculation.
2. On the front panel, press the Power button to turn off the
water heater.
3. Enter the R&D information menu by pressing the Up [+] button
three times, the Down [-] button three times, and then the Up
[+] button four more times.
Maximum recirculation pipe lengths:
Note
●
●
100 feet (approx 30 m) equivalent length of ½"
copper pipe
400 feet (approx 120 m) equivalent length of ¾"
copper pipe
ON
1
2
3
4
5
6
14
ON
7
8
9
10
1
2
1-OFF
2-ON
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