Haier Smart Power Series Service Manual page 146

7.7.3 Complete recharging
Before recharging, make sure to execute vacuum drying of the internal piping of the unit as well. To do so, use the
internal service port of the unit. Do not use the service ports located on the stop valve, since vacuum drying can not
be performed properly from these ports.
Outdoor units have 1 port on the piping. It is between the heat exchanger and the 4-way valve.
In case complete recharging is required (after a leak, etc.) , refer to teh information below to determine the
necessary amount of refrigerant.
Some sections of the refrigerant circuit may be isolated from other sections caused by components with specific
functions (e.g. valves) . The refrigerant circuit therefore features additional service ports for vacuuming, pressure
relief or pressurizing the circuit. In case it is required to perform brazing on the unit, ensure that there is no pressure
remaining inside the unit. Internal pressures need to be released with ALL the service ports indicated on the figures
below opened. The location is depending on mode type.
7.7.4 Total charging weight of the refrigerant (after a leak, etc.)
The total charging amounts relate to the refrigerant piping length as in "Maximum total one-way piping length" of
the table in paragraph "8.4. Allowable pipe length and height difference" on page 8. (E.g. twin: L1+L2)/
Model
5-10m
1UH071N1ERG
2.5
1UH090N1ERG
1UH105N1ERG 2.5
1UH125P1ERG
1UH125P1ERK
1UH140P1ERG 3.7
1UH140P1ERK
1UH160P1ERG
1UH200W1ERK
6.35
1UH250W1ERK
NOTICE
WARNING
Refrigerant piping length (liquid side)
(a)
10-20m 20-30m
2.5 2.5
2.5 2.5
3.7 3.7
6.35 6.35
30-40m 40-50m
2.95 3.4
2.95 3.4
4.15 4.6
7.35 8.35
144
Smart Power
50-60m 60-70m 70-75m
- -
3.85 -
5.05 5.5
9.35 10.35 11.35
-
-
5.95