Duct Connections - Daikin VAM-J8 Series Manual

14 | Unit installation

14.5 Duct connections

Installer and user reference guide
48
For models 1500+2000
a Ceiling hook
b Nut
c Washer
d Double nut
NOTICE
ALWAYS hang up the unit by its suspension brackets.
Do NOT connect the ducts as follows:
Extreme bend. Do NOT bend the duct more than
90°.
Multi bend
Reduced diameter. Do NOT reduce the duct
diameter.
▪ The minimum bend radius for flexible ducts is as follows: (Øduct/2)×1.5
▪ To prevent air leakage, wind aluminium tape around the section where the duct
flanges and the ducts are connected.
▪ Install the opening of the supply air as far as possible from the opening of the
room air.
▪ Use ducts with a diameter that fits the unit model. See the data book.
▪ Install the two outdoor ducts with a downward slope (minimum 1:50) to prevent
entry of rain water. Also provide insulation for both ducts, to prevent dew
formation. (Insulation material: 25 mm thick glass wool)
▪ If the temperature and humidity levels inside the ceiling are always high, install
ventilation inside the ceiling.
▪ Insulate the duct and the wall electrically when a metal duct has to penetrate the
metal lattice and wire lattice or the metal lining of a wooden structure wall.
▪ Install the ducts in such a way that the wind CANNOT blow inside the ducting.
a
b
c
d
VAM350~2000J8VEB
Heat reclaim ventilation unit
4P664012-1 – 2021.08