Daikin RDXYQ8T7V1B, Руководство по установке

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5 Installation
Installation manual
7
8T7V1B*
VRV IV heat exchanger unit for indoor installation
4P408444-1B – 2016.04
▪ Grills. Install grills in the suction ducting entrance and the
discharge ducting exit to prevent animals and debris from going
into the ducting.
▪ Service holes. Put service holes in the ducting to make
maintenance easier.
▪ Thermal insulation. Insulate the ducting against thermal losses
to prevent sweat (during heating operation), and to prevent
overheating of the building (during cooling operation).
▪ Sound insulation. Insulate the ducting against noise, especially
in sound-sensitive areas. Example: Sound-absorbing ducting;
sound-absorbing baffle in the ducting.
▪ Air leaks. Wind aluminium tape around the connection between
the heat exchanger unit and the ducting. Make sure there are no
air leaks between the ducting and the heat exchanger unit, and at
any other connection. This to prevent sweat, overheating and
sound problems.
a b b a
e e d d
c
a Screw (field supply)
b Flange (field supply)
c Heat exchanger unit
d Insulation (field supply)
e Aluminium tape (field supply)
▪ Airflow:
▪ Protect the ducting against reverse airflow from wind.
▪ Prevent discharged air from flowing back to the suction side.
Possible consequence: Decreased performance of the unit.
▪ Outside air. Connect the suction ducting and discharge ducting
with the outside air. If the suction ducting or discharge ducting is
connected with the inside air, it might be impossible to reach the
desired room temperature.
a
b
c
d
O Allowed
X Not allowed
a Building (top view)
b Suction ducting
c Heat exchanger unit
d Discharge ducting
5.2.3 Guidelines when installing the drain
piping
Make sure condensation water can be evacuated properly. This
involves:
▪ General guidelines
▪ Connecting the drain piping to the heat exchanger unit
▪ Installing a drain pump and drain reservoir
▪ Checking for water leaks
General guidelines
▪ Pipe length. Keep drain piping as short as possible.
▪ Pipe size. Keep the pipe size equal to or greater than that of the
connecting pipe (vinyl pipe of 25 mm nominal diameter and
32 mm outer diameter).
▪ Slope. Make sure the drain piping slopes down (at least 1/100) to
prevent air from being trapped in the piping. Use hanging bars as
shown.
1~1.5 m
a
a Hanging bar
O Allowed
X Not allowed
▪ Condensation. Take measures against condensation. Insulate
the complete drain piping in the building.
▪ Bad odours. To prevent bad odours and air going into the unit
through the drain piping, install a trap.
a
a Trap
▪ Combining drain pipes. You can combine drain pipes. Make
sure to use drain pipes and T-joints with a correct gauge for the
operating capacity of the units.
≥100 mm
a b c b
a Heat exchanger unit
b Indoor unit
c T-joint
To connect the drain piping to the heat exchanger
unit
NOTICE
Incorrect connection of the drain hose might cause leaks,
and damage the installation space and surroundings.
1 Push the drain hose as far as possible over the drain pipe
connection.
2 Tighten the metal clamp until the screw head is less than 4 mm
from the metal clamp part.
3 Wind the sealing pad (= insulation) around the metal clamp and
drain hose, and fix it with cable ties.
4 Connect the drain piping to the drain hose.
≤ 4 mm
A
A'
A-A'
A
A'
e c d
b
a
d
c
a b
2+3+4 1
a Drain pipe connection (attached to the unit)
b Drain hose (accessory)
c Metal clamp (accessory)
d Sealing pad (accessory)
e Drain piping (field supply)