Daikin VRV IV RKXYQ5T8Y1B Series, Инструкция для установки и пользователя

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16 | Unit installation
Installer and user reference guide
69
R R8T7V1B
VRV IV heat pump for indoor installation
4P499898-1A – 2020.10
16.4.3 Guidelines when installing the ducting
The ducting is to be field supplied.
▪ Slope. Make sure the ducting slopes down to prevent water from flowing into
the heat exchanger unit.
a b a
a Ducting
b Heat exchanger unit
▪ 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