Haier U Series Service Manual page 95

3.power block installation
There are two terminal blocks F and G on the full energy recovery exchanger.
F block is power phase string and controlling block, which connects with
power string. G block is the ground-connecting block, which connects the
zero string end in the terminal box.
grouding block
caution:
There is anti-water jacket(pyroshrink pipe) on the block connector of
the controling string and the power phase string. Please confirm whether
it is fastened after connecting.
HSU-09,12H03/U(DBPZXF)
G
pyroshrink insulation
jacket
power phase string and
F
c o n t r o l i n g
pyrocondensation jacket pipe
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Installations
b l o c k , w i t h
Domestic Air Condition