Flaring Work; Connecting The Refrigerant Connections To The Indoor Unit - Baxi HSGNW25 Installation And Service Manual

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5 Installation
5.6.2

Flaring work

Fig.119
a
b
d
c c
5.6.3

Connecting the refrigerant connections to the indoor unit

Fig.120
Fig.121 Pipe adapter
126
g
e
f h
MW-1002117-1
MW-6020161-01
Inside the building:
Install the refrigerant pipe at a minimum of 2 metres from the ground
(when possible).
Fit a mechanical protection onto the pipe sections below 2 metres.
Respect the minimum curve radius of 100 to 150 mm.
Adhere to the minimum and maximum distances between the indoor unit
and the outdoor unit.
Do not add additional connecting joints between the indoor and outdoor
units.
Cut the pipes with a pipe cutter and deburr.
Angle the opening in the pipe downwards to ensure no particles can get
inside, while preventing oil traps.
If the pipes are not connected immediately, plug them to prevent
moisture from entering.
Do not reuse beaded joints, always fabricate a new joint.
Carry out flaring work using a flaring tool and compare the flared work with
the provided figure. If the flare is noted to be defective, cut off the flared
section and do flaring work again.
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
Caution
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.
7798815 - v04 - 07122022