GREE ELECTRIC GUHD09NK3CO Service Manual page 88

U-Match Series DC
Inverter Service Manual
1.3.6 Drain Piping Work
a. Installation of Drainage Pipeline
When connecting the drainage pipe with the unit, do not apply excessive force to the pipeline at the side of the
Purchase general-purpose hard PVC pipe locally to be used as the drainage pipeline. When carrying out
When the laid drainage pipe is used for multiple units, the common pipe shall be about 100mm lower than the
drainage outlet of each set of unit. A pipe with thicker wall shall be used for such purpose.
b. Testing of Drainage System
After the electrical installation is completed, carry out the testing of the drainage system.
that there is no leakage. If the unit is to be installed in a new house, carry out testing before decorating the ceiling.
c. Matters of Attention
The diameter of the drain hose should be equal or bigger than the connection pipe's. ( The diameter of
Drain hose should be short and drooping gradient should at less 1/100 to prevent the formation of air bubble.
If drain hose cannot has enough drooping gradient, drain raising pipe should be added.
To prevent bent of the drain hose, the distance between hoisting stand should is 1 to 1.5m. (As shown in Figure
1-3-8)
The install height of the drain raising pipe should less than 280mm.
The drain raising pipe should form a right angle with the unit, and distance to unit should not beyond 300mm.
(As shown in Figure 1-3-9)
85
Models
GKH12K3CI
GKH18K3CI
GKH24K3CI
GKH30K3CI
GKH36K3CI
GKH42K3CI
Figure 1-3-7
Figure 1-3-8
H(mm)
250
260
340