Gree GMV-36WL/B-T(U) - Page 21

Ultra Heat GMV5 User Manual
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(4) When the pressure of the system is less than -0.1Mpa (-1bar), keep the system for more
than one hour under the condition.
Fig. 21
NO.
1
2
3
4
Name
Outdoor unit
Gas side stop valve
Liquid side stop valve
Pressure-vacuum gauge
NO.
5
6
7
Name
Hi-knob
Lo-knob
Vacuum pump
(5) Turn off the knobs firstly and then the pump. If the pressure of the pressure-vacuum
gauge does not rise within 2 hours, the system is under a vacuum. Otherwise, the system
has leaked, please look for where the gas leaks in.
4.5.3 Refrigerant Adding
(1) Refrigerant quantity of outdoor unit before delivery:
Model
GMV-36WL/B-T(U)
GMV-48WL/B-T(U)
Refrigerant Qty (kg/oz)
6.5
(229)
6.5
(229)
(1) The refrigerant amount charged before delivery doesn’t include the amount that needs to be
added to indoor units and the connection pipeline.
(2) Length of connection pipe is decided on site. Therefore the amount of additional refrigerant
shall be decided on site according to the dimension and length of field-installed liquid pipe.
(3) Record the amount of additional refrigerant for convenience of after-sales service.