Carrier 53QPCT18H-708F Installation Manual page 27

CONNECTING REFRIGERANT PIPING LINES (Cont.)
16-2 INSTRUCTIONS OF CONNECTIING REFRIGERANT PIPING LINES
Recommended
Avoid excessive height difference between
indoor and outdoor units.
Keep the height difference to a strict minimum
to avoid alteration on system cooling and
heating performance.
Avoid excessive length of refrigerant piping
lines between indoor and outdoor units.
Keep the height difference to a strict minimum
to avoid alteration on system cooling and
heating performance.
Avoid excessive number of turns and bends in
refrigerant piping lines during connections
with both the indoor and outdoor units.
Keep the number of turns and bends to a strict
minimum to avoid alteration on system
cooling and heating performance.
Piping must be performed by qualified
installer according to good refrigeration
systems practices.
Piping materials and insulation materials must
be of refrigerant quality.
- Select the pipe diameters to the size of system
to be installed.
- All bends must be considered when connecting
indoor unit with outdoor unit by required length
of refrigerant piping lines.
- Do not remove the protective caps from the
couplings until the refrigerant piping lines are
ready for connection with both indoor and
outdoor units. This is to keep piping clean.
- The installer must carefully unroll the tubing and
run it between the indoor and outdoor units.
Not
● Do not bend the pipe more than three times
Recommended
● When extending the rolled pipe, straighten
When forming the pipe. Be careful not to crush it.
- Avoid pipes flattering or kinking.
- The minimum radius of bending must not be
less than 100 mm to avoid damage of piping.
at one place.
the pipe by unwinding it.
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