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5 Installation
Fig.207
a
b
d
c
c
5.12.3
Connecting the refrigerant connections to the indoor unit
Fig.208
Fig.209 Pipe adapter
5.12.4
Connecting the refrigerant connections to the outdoor unit
Fig.210
182
g
e
f
h
MW-1002117-1
MW-6020161-01
MW-1001648-1
Good example:
a Smooth all around
b Inside is shining without any scratches
c Even length all around
Bad examples:
d Too much
e Titled
f Scratch on flared plane
g Cracked
h Uneven
Use a second wrench to prevent the refrigeration link from
twisting.
1. Cut the refrigerant pipes coming from the outdoor unit with a pipe
cutter and deburr.
2. Unscrew the protective cap from the liquid line of the refrigerant
connector and discard.
3. Check the exchanger leak-tightness. Push a screwdriver gently into
the 1/4" nut. A release noise should be heard, which is proof that the
exchanger is leak-tight.
4. Remove the liquid line nut and throw it away.
5. Remove the gas nut and throw it away.
6. Add a pipe adapter if necessary
7. Engage the nuts from the accessory bag onto the refrigerant pipes.
8. Flare the refrigerant connections.
9. Apply refrigerant oil to the flared parts to facilitate tightening and
improve the seal.
10. Tighten the connections, observing the given tightening torques.
Tab.134
External diameter of the
pipe (mm/inch)
6.35 - 1/4
9.52 - 3/8
12.7 - 1/2
15.88 - 5/8
19.05 - 3/4
Use a second wrench to prevent the refrigeration link from
twisting.
1. Remove the protective side panel from the outdoor unit.
2. Check that the stop valves are closed.
3. Remove the protective caps from the valves and throw them away.
External diameter of the
Torque load (N.m)
cone fitting (mm)
17
14 - 18
22
34 - 42
26
49 - 61
29
69 - 82
36
100 - 120
7800852 - v02 - 10052022
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