Daikin VRV IV+ User Manual

20 | Configuration
Installer and user reference guide
127
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
1 Make sure the 7‑segment display indication is in the default situation (normal
operation).
2 Push BS1 for over 5seconds.
Result: Mode2 is accessed:
3 Push BS2 18 times.
Result: Mode2 setting 18 is addressed:
4 Push BS3 1 time; the value which is returned (depending on the actual field
situation), is the status of the setting. In the case of [2‑18], default value is "0",
which means the function is not active.
Result: Mode 2 setting 18 is addressed and selected, return value is the
current setting situation.
5 To change the value of the setting, push BS2 till the required value appears on
the 7‑segment display indication. When achieved, define the setting value by
pushing BS3 1 time. To start operation according to the chosen setting,
confirm again by pushing BS3.
6 To quit mode 2, push BS1 2 times.
20.2.7 Mode 1: Monitoring settings
[1‑0]
Shows whether the unit you check is a master, slave1 or slave2 unit.
Master, slave1 and slave2 indications are relevant in multiple outdoor unit system
configurations. The allocation of which outdoor unit is master, slave 1 or slave 2
are decided by the unit's logic.
The master unit should be used to input field settings in mode2.
[1‑0] Description
No indication Undefined situation.
0 Outdoor unit is master unit.
1 Outdoor unit is slave1 unit.
2 Outdoor unit is slave2 unit.
[1‑1]
Shows the status of low noise operation.
Low noise operation reduces the sound generated by the unit compared to
nominal operating conditions.
[1‑1] Description
0 Unit is currently not operating under low noise
restrictions.
1 Unit is currently operating under low noise restrictions.
Low noise operation can be set in mode2. There are two methods to activate low
noise operation of the outdoor unit system.
▪ The first method is to enable an automatic low noise operation during night time
by field setting. The unit will operate at the selected low noise level during the
selected time frames.

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