Air Source Heat Pump Water Heater
33
12 Methods for Replenishing or Discharging
Refrigerants
12.1 Refrigerant Replenishment
Refrigerants can be replenished for the source water heater only in specific
mode.
First, connect the hose in the middle of the pressure gauge to the refrigerant
bottle, and connect (but do not tighten) one end of the blue hose of the low
pressure gauge to the fluoride injection mouth of the air valve on the unit. Then,
open the valve of the refrigerant bottle. Open the valve next to the low pressure
gauge for 5 seconds and close it, and immediately tighten the hose interface on
the fluoride injection mouth.
In normal hot water mode, press and hold MODE+
for 5 seconds to enter
the query status. When the temperature display area displays 00, press and hold
MODE+
for 5 seconds. Then, 00 changes to P0. Press the
or
button to
switch to the P3. Then, press the MODE button for settings. Press the
or
button again to change 00 in the time display area to 01. Press MODE to confirm
and complete the settings. After the settings are complete, when the low
pressure gauge pointer declines, you can loosen the valve next to the low
pressure gauge for refrigerant replenishment ((Figure 12-1 shows the diagram
for refrigerant replenishment).
12.2 Refrigerant Discharging
Open the air valve using a hex key to discharge the refrigerant (Figure 12-2
shows the refrigerant discharging diagram).
NOTICE!
This operation can be performed only by professional personnel to avoid
hazards. Inject refrigerants based on the nominal amount indicated on the
nameplate when charging refrigerants.