Toshiba MMU-AP0091H Installation Manual page 17

5-5. Careful Handling
Careful handling is the most important step in preventing moisture, dirt, and dust from getting inside of the pipes.
Moisture in pipes has caused major problems in numerous instances in the past. Therefore, it is important to be
as careful as possible in order to prevent problems before they occur.
Pipe delivery and storage
When pipes are delivered, care should be taken to prevent it from becoming bent or deformed, and the ends of
the pipes should be capped in order to prevent dirt, mud, rain, etc., from getting inside. Build a wooden frame to
hold the pipes securely, and store the pipes in the specified location.
Delivery of copper pipes without caps to a work site is not acceptable.
Frame for careful handling
and to prevent rolling
The ends of all pipes must be sealed. The most reliable method is the "pinch method," but the taping method
can be selected in some circumstances.
Location
Outdoors
Indoors
n Pinch method
Pinch the end of the copper pipe closed,
and braze any opening closed.
n Taping method
Cover the end of the copper pipe with vinyl tape.
[Taping method]
Opening
Copper
pipe
Careful handling on a pallet
Time for installation
One month or more
Less than one month
Does not matter
Flatten
Vinyl tape
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Pipe caps
Careful handling method
Pinch method
Pinch or taping method
Pinch or taping method
Copper pipe
Braze here
Fold over
Cap
Solder
Tape again