Navien NHW700, Руководство пользователя

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17 Maintaining the Water Heater
7. Open the pump drain plug.
8. Remove the cold water inlet filter.
9. Allow the residual water to drain from the water
heater.
10. When the water is completely drained, reinsert
the cold water inlet filter, and then close the
water drain plug.
11. To refill the water heater follow the steps of
“Draining the Water Heater” in reverse.
4. Close the water supply valve on the inlet to the
water heater. If there is no valve, turn off the
water supply at the water main.
5. Open all hot water faucets completely. The
water that remains in the plumbing lines will
drain out.
6. Remove the recirculation inlet filter from the
bottom of the water heater.
Recirculation
Inlet Filter
Pump Drain Plug
Cold Water Inlet
Filter