Air Source Heat Pump Water Heater
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(2) Close the cut-off valve at the water inlet of the water tank.
(3) Open the cut-off valve at the hot water drain outlet and valve in user
water use site.
(4) Open the cut-off valve in joint (3-way) connector, and wait for drainage
of water inside water tank.
(5) Close the cut-off valve in joint (3-way) connector, open the cut-off valve
at the water inlet of the water tank, close the cut-off valve at the water
inlet when water flows from user water use site, then reopen the cut-off
valve in joint (3-way) connector, repeat the drainage operation, close
the cut-off valve in joint (3-way) connector when water discharged is
clean.
(6) Conduct water input for the water tank according to water input
operation.
(7) Water tank cleaning completed and energize it.
16.3 Mg-Stick Replacement
To improve durability of the water tank, a Mg-Stick is installed inside the
water tank. Generally, the Mg-Stick has a lifespan of two to three years. However,
if the quality of water used by the water heater is poor, the Mg-Stick lifespan will
be shortened. For Mg-Stick replacement, perform the following steps:
(1) Before removing the Mg-Stick, drain the water tank by following
drainage operations.
(2) Open the cap on the mounting mouth for the Mg-Stick in the water tank.
(3) Use a hex key to unscrew the Mg-Stick component, and then steadily
removed the magnesium to prevent it from falling into the inner
container of the water tank;
(4) Install a new Mg-Stick component into the mounting mouth of the
Mg-Stick, and then tighten it using a hex key.
(5) Close the cap, and replenish water by following water replenishment
operations.