Daikin VRV IV+ User Manual

18 | Piping installation
Installer and user reference guide
101
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
Charging refrigerant
Step 6
Proceed with automatic or manual charge
Step 6b
Activate field setting [2-20]=1
Unit will start manual refrigerant charging operation.
Step 6a
• Push 1x BS2: "888"
• Push BS2 for more than 5 seconds "t01" pressure equalisation
• Open valve A
• Charge remaining amount of refrigerant P (kg)
R=Q+P
Depending on ambient conditions, the unit will decide to perform autocharge
operation in heating or cooling mode.
• Close valve A
• Push BS3 to stop manual charging
• Charging is finished
• Fill in the amount on the additional refrigerant charge label
• Input the additional refrigerant amount via setting [2-14]
• Go to test run
Step 5
• Connect valve A to the refrigerant charge port (d)
• Open all outdoor unit stop valves
R>Q
Automatic charge
Manual charge
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R410A
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A

Daikin VRV IV+ Specifications

General

Type	VRV (Variable Refrigerant Volume)
Series	VRV IV+
Refrigerant	R-410A
Energy Efficiency	High
Inverter Technology	Yes
Operating Temperature Range (Cooling)	-5°C to 46°C
Cooling Capacity Range	22.4 kW - 168 kW
Indoor Unit Compatibility	Wide range
Maximum Piping Length	Up to 1000 m
Power Supply	380-415V, 50Hz, 3-phase
Maximum Height Difference	Up to 50 meters