Haier HP300S2-F7 Instruction, Operation And Installation Manual Addendum page 15

Heat pump water heater
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Installation instructions
Connecting the tank unit
A
a) Shape the pipes according to the route required.
b) Remove the threaded brass flare nuts(A) on the tank unit and store them.
c) Check that that the pipes and fittings are clear of impurities.
d) Cut the pipe to the fixed length using a pipe cutter and avoiding any
deformation.
e) Remove any pipework burrs with pipe reamer ensuring not to leave impurities inside
the pipe.
f) Install the threaded brass flare nuts(A) on the pipes in the correct direction.
g) Insert the tube into the flaring tool. Flare the end of the pipe as indicated in
the table.
Connection
Pair-coil
Connection
Inlet refrigerant pipe
1/4" (6.35mm)
(7/16-20UNF)
3/8" (9.52 mm)
(5/8 -18UNF)
Outlet refrigerant pipe
After confirming that there are no wrinkles or tears on the flare, connect the pipes
using two spanners, being careful not to damage the pipes. If the force is
insufficient the seals may not be made, causing leaks. If the force is excessive,
damage to the flange may occur. The safest method is to careful tighten the
connection by using 2 spanners.
15

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