Instructions For Equipment Using R32 Refrigerant - Daikin FXMA50A5VEB Installer And User Manual

3 | Specific installer safety instructions

3.1 Instructions for equipment using R32 refrigerant

Installer and user reference guide
14
WARNING
▪
If the power supply has a missing or wrong N-phase, equipment might break
down.
▪
Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber,
or telephone earth. Incomplete earthing may cause electrical shock.
▪
Install the required fuses or circuit breakers.
▪
Secure the electrical wiring with cable ties so that the cables do NOT come in
contact with sharp edges or piping, particularly on the high-pressure side.
▪
Do NOT use taped wires, stranded conductor wires, extension cords, or
connections from a star system. They can cause overheating, electrical shock or
fire.
▪
Do NOT install a phase advancing capacitor, because this unit is equipped with an
inverter. A phase advancing capacitor will reduce performance and may cause
accidents.
WARNING
Use an all-pole disconnection type breaker with at least 3 mm between the contact
point gaps that provide full disconnection under overvoltage category III.
WARNING
If the supply cord is damaged, it MUST be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
CAUTION
▪
Each indoor unit has to be connected to a separate user interface. Only a safety
system compatible remote controller can be used as the user interface. See
technical data sheet for remote controller compatibility (e.g. BRC1H52/82*).
▪
The user interface has to be put in the same room as the indoor unit. For details,
please refer to the installation and operation manual of the user interface.
CAUTION
In case shielded wire is used, connect the shielding to the outdoor unit side only.
Configuration (see "20 Configuration" [
WARNING
In case of R32 refrigerant, terminal connections T1/T2 are for fire alarm input ONLY.
Fire alarm has a higher priority than R32 safety and shuts the entire system down.
X1M
T1
a
T2
a Fire alarm input signal (potential free contact)
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
4
72])
FXMA-A
VRV system air conditioner
4P680920-1 – 2022.01