Multizone Wall Mounted Air Handler Installation Manual

ManualsBrandsBlueridge ManualsDuctless Mini Splits27,000 BTU 22 SEER HYPER HEAT Two Zone Ductless Mini Split

2. Using a pipe cutter, cut the pipe a little longer

than the measured distance.

3. Make sure that the pipe is cut at a perfect 90°

angle. Refer to Fig. 5.1 for bad cut examples.

Oblique RoughW

arped

Refrigerant Piping

Connection

 Page 21 

Revised 5/14/2020

Fig 5.1

Fig 5.3

Fig 5.5

Fig 5.4

Fig 5.2

Be extra careful not to damage, dent, or deform

the pipe while cutting. This will drastically

reduce the heating eciency of the unit.

DO NOT DEFORM PIPE

WHILE CUTTING

Step 2: Remove burrs

Burrs can aect the air-tight seal of refrigerant piping

connection. They must be completely removed.

1. Hold the pipe at a downward angle to prevent

burrs from falling into the pipe.

2. Using a reamer or deburring tool, remove all

burrs from the cut section of the pipe.

Step 3: Flare pipe ends

Proper aring is essential to achieve an airtight seal.

1. After removing burrs from cut pipe, seal the

ends with PVC tape to prevent foreign materials

from entering the pipe.

2. Sheath the pipe with insulating material.

3. Place are nuts on both ends of pipe. Make sure

they are facing in the right direction, because

you can’t put them on or change their direction

after aring. See Fig. 5.3.

Pipe

Reamer

Point down

Flare nut

Copper pipe

4. Remove PVC tape from ends of pipe when

ready to perform aring work.

5. Clamp are form on the end of the pipe. The end

of the pipe must extend beyond the edge of the

are form in accordance with the dimensions

shown in the table below.

Table 7.1: Torque chart and aring guide

Pipe

gauge

Flaring

torque

Flare dimension

(A) (Unit: Inch)

Flare shape

Min. Max.

1/4" 14 ft/ lbs 0.33 0.34

3/8" 18 ft/ lbs 0.52 0.53

1/2" 26 ft/ lbs 0.64 0.65

5/8" 34 ft/ lbs 0.76 0.78

R0.4~0.8

Flare form

Pipe