Navien NPE-180A Operation Manual

Also see for NPE-180A: Installation manual Installation & operation manual Specification sheet Installation manual Service manual

Contents

Navien NPE-180A Operation Manual Manual pdf 10 page image

10 Maintaining the Water Heater4.1 Cleaning the Water HeaterCAUTIONMake sure the water heater is turned off and the power supplyis disconnected before cleaning the water heater. The waterheater may remain hot for several minutes after it is turned off.To prevent burns, wait until the water heater has cooled downbefore cleaning.To clean the water heater, wipe the outside with a damp cloth. Usea non-acidic, non-abrasive cleaner to remove any surface stains.The front panel is moisture resistant, but it is not waterproof. Keepit as dry as possible.4.2 Draining the Water HeaterYou need to drain the water heater before performingmaintenance tasks, such as cleaning the inlet water filter, or toprevent the water heater from freezing when it will not be used foran extended period.Refer to the “2.2 Parts of the Water Heater” on page 6 for detailsabout part locations.To drain the water heater:Place a bucket under the water heater, to collect the residual1.water inside the water heater.Press the Power button on the front panel to turn off the2.power to the water heater.Close the gas valve.3.CloseClose the water supply valve on the inlet to the water heater. If4.there is no valve, turn off the water supply at the water main.Open all hot water faucets completely. The water that remains5.in the plumbing lines will drain out.4. Maintaining the Water Heater