Pipe Preparation - Rheem SMUL 12 Installation Instruction

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Drain hose outlet from indoor unit can be manage in 3 style ::rear ,left and right of the indoor unit
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Tighten both fare nuts into gas pipe and liquid pipe at the indoor unit with two holding spanners.
5. Condense drain
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Be sure the unit reasonably level and pitched toward the drain to ensure proper grange.
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Piping material
(a) oft Vinyl chloride Pipe 22 MM. Nominal pipe size.
(b) Hard Vinyl chloride (PVC) Coupling 22 mm. Nominal pipe size.
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Connect the soft/hard vinyl chloride pipe to the coupling, see fig.8
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The indoor unit uses gravity to drain: Therefore the piping outside the unit should slope downward.
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"IMPORTANT " Avoid draining as shown in fig. 9.
FIG 8
6. Refrigerant piping
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Connections to the indoor unit are flared connection.
1. Make flared joints for both suction and liquid lines.
2. Ensure tube and fittings are in line with one another before tightening nut to provide concentric
seating of tube on prevent leakage.
•
Brazing should be performed with a constant purge of nitrogen trough the piping. This to
Keep inside of tube clean.
•
Insulate suction and liquid and liquid line separately to prevent sweating.
P. 06

PIPE PREPARATION

-PIPE & ELECTRICAL WIRE CUTTING
* Use cutting tools easily found in the market.
* Measure precisely both outer & inner pipe.
* Provide Alltel bit longer pipe than the measurement.
* Wire must be 1.5 m. longer than the refrigerant tube.
-REAMING
* Clean inside of the inner refrigerant tube.
* While reaming, the tube end must be on the top
of the reamer to prevent any dust going back into
the tube.
-FLARING THE PIPE FND
* Flare both ends of the pipe with flaring kit by
fitting the flare nut on the pipe before flaring.
Set the die on the pipe so that pipe end is
0.5 mm. Above top of the die .Check if the pipe
end is even and perfectly round.
- WIRE CONNECTION AND TAPE COVERING
(See the picture on the right hand side)
FIG 9
P. 07
Right Wrong
Cutting Tool
Sloped Cut Rough Cut
Refrigerant Tube
Reamer
Up side
down position
Uneven Poor Cracked Uneven
Slope Skin Thickness
Low Pressure Refrigerant Tube
30-40 mm.
To Indoor Unit To Outdoor Unit