Panasonic LZ2 - Introduction

Mini VRF SYSTEM
Control Functions - Outdoor unit
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1. Introduction
Mini VRF SYSTEM is a multi system that is connected to a single outdoor unit. The outdoor unit contains an inverter
compressor.
To operate this system, the below settings must be made at the time of the test run.
Table 1-1
Setting item
At shipment
from factory
Settable range
System address 1 System 1 – 30
No. of indoor units 1 1 – 16 units
Table 1-2
8 HP 10 HP
Maximum number of connected indoor units 16 16
Be sure to connect indoor units so that the resulting indoor-outdoor capacity ratio (total capacity of all indoor units
compared with the outdoor unit capacity) is within the range of 50% – 150% (130%*).
* In case of 1.5 kW indoor units connection.
2WAY VRF SYSTEM
Control Functions
3. Compressor Control
The inverter compressor can operate within the range in the table below.
When the high pressure is over 3.3MPa, the upper limit frequency is restricted.
The frequency range in the table above is subject to change without notice.*
*1 The minimum Hz changes according to the outdoor air temperature during cooling operation.
*2
・The upper limit frequency is sometimes restricted to 50Hz or less until the compressor gets warmer.
・During special control (4-way valve adjustment control, system oil recovery control or defrost control) the
maximum frequency is limited.
・When operation started under the temperature of
10°C＜ outdoor air temperature, the minimum Hz
becomes 15Hz.
(2) Operating Frequency Range of Inverter Compressor
Type of outdoor unit
Minimum frequency (Hz) *1
Maximum frequency (Hz) *2 77.2
8HP 10HP
95.0
15 15
If the low pressure is over 1.7MPa during operation of the inverter compressor, the system is stopped.
(P27: Pre-trip)
1
2
20°C
10°C
SM830289-01_欧州向け R32 mini VRF 8,10HP SM&TRSM.indb 2SM830289-01_欧州向け R32 mini VRF 8,10HP SM&TRSM.indb 2 2021/05/07 10:10:252021/05/07 10:10:25