Inspection; Preparing The Water Heater For Inspection - Navien NP-180 Service Manual

6. Inspection

Check and clean the heating system once a year.
We advise you to offer your customer an annual inspection

6.1. Preparing the Water heater for Inspection

• Precautions on security before working
• Inspection items and entire procedures
• Tools required when inspection
- Volt/Ohm/Amp meter with test probes
- Digital manometer or U tube type manometer with 14 inch water column
(w. c.) scale, a hose and two 1/8 inch taps
- Assorted screw drivers
- Leak solution or leak detector
- Teflon tape
©Navien America Inc. 2010
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NR/NP series service Manual Version 2.0