GMV DC Inverter VRF 
14 
No.  Name 
GMV-400WM/H-X  GMV-450WM/H-X 
①
 
Φ
25.4 
Φ
28.6 
②
 
Φ
12.7 
Φ
12.7 
③
 
Pipe and wiring passing hole 
234×69  234×69 
④
 
Φ
50 
Φ
50 
 
No.  Name 
Pipe diameter   
①
 
Φ
28.6 
Φ
28.6 
Φ
28.6 
②
 
Liquid pipe 
Φ
15.9 
Φ
15.9 
Φ
15.9 
③
 
Pipe and wiring passing hole 
234×69  234×69  234×69 
④
 
Φ
50 
Φ
50 
Φ
50 
3.2.2 Select Installation Position   
Conditions for selecting the installation position: 
(1)  Install the unit at a place where is adequate to withstand the weight of the unit and make 
sure the unit would not shake or fall off. 
(2)  Fully consider the influence of strong winds, typhoons and earthquakes when selecting the 
installation site, and strengthen the installation. 
(3)  The influence of flammable, explosive, corrosive gases or exhaust gases should be avoided. 
(4)  Ensure that  there is a certain  space for  heat exchanging and maintenance, so that the 
ventilation is smooth and the running is reliable. 
(5)  Outdoor units and indoor units should be as close as possible to minimize the length and 
angle of the cooling pipes. 
(6)  Do not allow children to approach the unit. Preventive measures should be taken to prevent 
children from contacting the unit. 
(7)  The unit should not be installed in places with high environmental pH  or  high voltage 
fluctuations, and places such as vehicles and ships. 
(8)  Do not install the unit at the place where is close to the equipment that generates 
electromagnetic waves. Electromagnetic waves can affect the control system and cause 
fault. 
3.2.2.1 Take Seasonal Wind into Consideration When Installing the Outdoor Unit 
(1)  Anti-monsoon installation requirements for unit not connecting exhaust duct. 
When the exhaust duct is not connected, a protective cover should be installed according to the 
seasonal wind circumstances.