Air Source Heat Pump Water Heater
28
9 Maintenance
9.1 Water replenishing and water drainage for water
tank
(1) Water replenishing for water tank
①
Cut off the power for the unit, open the cut-off valve on hot water exit
pipe and the valve at the water using point;
②
Open the cut-off valve on the water inlet pipe for tap water;
③
Cut off the valve at the water using point when there
’s water flowing out
from that point.
④
When water supply is finished, put through the power.
(2) Water drainage for water tank
①
Cut off the power for the unit and then cut off the cut-off valve on the
tap water inlet pipe;
②
Cut off the cut-off valve on the hot water exit pipe and the valve at the
water using point;
③
Open the cut-off valve at the drain outlet.
④
When the water inside the water tank is drained out, please close the
cut-off valve at the drain outlet.
9.2 Periodical clean for the water tank
In order to ensure the hot water quality, please clean the water tank periodically
by below procedures:
(1) Cut off the power;
(2) Close off the cut-off valve on the inlet pipe of water tank;
(3) Open the cut-off valve on the hot water exit pipe and the valve at the water
using point;
(4) Open the cut-off valve on the drain outlet until the water is drainaged
completely;
(5) Open the cut-off valve on the water inlet pipe of water tank, flush the water
tank until the water drained from the drain outlet is clean, and then close the cut-off
valve on the drain outlet.
(6) Fill the water tank according to water supply operation;
(7) Put through the power when the water is cleaned.
