Opening The Unit; About Opening The Units; To Open The Outdoor Unit - Daikin VRV IV+ Installer And User Reference Manual

17 | Unit installation

17.2 Opening the unit

17.2.1 About opening the units

17.2.2 To open the outdoor unit

Installer and user reference guide
66
E When there is a room division that has an opening sufficiently large
to permit free air flow.
a Opening between the rooms. In case there is a door the openings
above and below the door each must be equivalent in size to 0.15%
or more of the floor area.
b Room division
3 Calculate the refrigerant density using the results of the calculations in steps 1
and 2 above. If the result of the above calculation exceeds the maximum
concentration level, a ventilation opening to the adjacent room shall be made.
Formula
F
G
H
4 Calculate the refrigerant density taking the volume of the room where the
indoor unit is installed and the adjacent room. Install ventilation openings in
the door of adjacent rooms until the refrigerant density is smaller than the
maximum concentration level.
At certain times, you have to open the unit. Example:
▪ When connecting the electrical wiring
▪ When maintaining or servicing the unit
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover is removed.
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
a
b
F/G≤H
Total volume of refrigerant in the refrigerant system
3
Size (m ) of smallest room in which there is an indoor
unit installed
Maximum concentration level (kg/m
3
)
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10