Chapter 1 Introduction To Basic Features Of Units; Basic Operating Principle - Gree Ultra Heat GMV Multi VRF Heat Pump Series Service Manual

Ultra Heat GMV VRF Technical Service Manual

CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS

1 BASIC OPERATING PRINCIPLE

The operating principle is as follows: When an indoor unit (IDU) is operating in cooling mode, the
outdoor unit (ODU) can correspondingly enable the outdoor module based on the operating load
requirement of the IDU. The outdoor heat exchanger serves as a system condenser, and the heat
exchangers of cooling IDUs are connected in parallel to serve as a system evaporator. The circulation of
air supply and air return of the IDU is performed to adjust the indoor temperature and humidity. When an
IDU is operating in heating mode, all four-way valves in the ODU module are switched into energized
status. The outdoor heat exchange serves as the system evaporator, and the heat exchanger of the IDU
serves as the system condenser. The circulation of air supply and air return of the IDU is performed to
adjust the indoor temperature and humidity.
MODELS LIST:
Model Name
GMV-V72W/A-F(U)
GMV-V96W/A-F(U)
Product Code
CN851W2250 208/230V 3ph 60Hz
CN851W2260 208/230V 3ph 60Hz
Power Supply
(V, Ph, Hz)
7
UNIT INTRODUCTION
Appearance