Mounting The Outdoor Unit; To Provide The Installation Structure; 14 Piping Installation; Preparing Refrigerant Piping - Daikin VRV IV+ RXYTQ8U5/U7YF Installation And Operation Manual

14 Piping installation

8 HP
2×
SW8
10~16 HP
6×
NOTICE
When closing the electrical component box cover, make
sure that the sealing material on the lower back side of the
cover is NOT caught and bent towards the inside (see
figure below).
a
b
c
d
e
a Electrical component box cover
b Front side
c Power supply terminal block
d Sealing material
e Moisture and dirt could enter
NOT allowed
Allowed
13.2

Mounting the outdoor unit

13.2.1

To provide the installation structure

Make sure the unit is installed level on a sufficiently strong base to
prevent vibration and noise.
NOTICE
▪ When the installation height of the unit needs to be
increased, do NOT use stands to only support the
corners.
▪ Stands under the unit must be at least 100 mm wide.
*
NOT allowed
Allowed (* = preferred installation)
▪ The height of the foundation must at least be 150 mm from the
floor. In heavy snowfall areas, this height should be increased,
depending on the installation place and condition.
▪ The preferred installation is on a solid longitudinal foundation
(steel beam frame or concrete). The foundation must be larger
than the grey marked area.
Installation and operation manual
14
SW8
≥AB
AA
a
Minimum foundation
a Anchor point (4×)
HP
8
10~16
▪ Fasten the unit in place using four foundation bolts M12. It is best
to screw in the foundation bolts until their length remains 20 mm
above the foundation surface.
NOTICE
▪ Prepare a water drainage channel around the
foundation to drain waste water from around the unit.
During heating operation and when the outdoor
temperatures are negative, the drained water from the
outdoor unit will freeze up. If the water drainage is not
taken care of, the area around the unit might be very
slippery.
▪ When installed in a corrosive environment, use a nut
with plastic washer (a) to protect the nut tightening part
from rust.
a
14 Piping installation
14.1

Preparing refrigerant piping

14.1.1

Refrigerant piping requirements

NOTICE
Refrigerant R410A requires strict cautions for keeping the
system clean and dry. Foreign materials (including mineral
oils or moisture) should be prevented from getting mixed
into the system.
NOTICE
The piping and other pressure-containing parts shall be
suitable for refrigerant. Use phosphoric acid deoxidised
seamless copper for refrigerant.
▪ Only use phosphoric acid deoxidised seamless copper.
▪ Foreign materials inside pipes (including oils for fabrication) must
be ≤30 mg/10 m.
▪ Temper grade: use piping with temper grade in function of the
pipe diameter as listed in table below.
VRV IV+ heat pump for high ambient temperatures
(mm)
AA AB
766 992
1076 1302
RXYTQ
4P546223-1C – 2021.11