Gree U-MATCH Series Service Manual page 69

U-Match Series DC Inverter Service Manual
(6) Install one water trap for each unit.
(7) Installation of water trap shall consider easy cleaning in the future.
Indoor unit
(8) Connection of drainage branch pipe to the standpipe or horizontal pipe of drainage main pipe.
(9) The horizontal pipe cannot be connected to the vertical pipe at a same height. It can be
connected in a manner as shown below:
NO.1: Attach the 3-way connection of the drainage pipe joint as shown in Figure 3-1-55.
NO.2: Attach the drain elbow as shown in Figure 3-1-56.
NO.3: Attach the horizontal pipe as shown in Figure 3-1-57.
3-way connection of
drainage pipe joint
Figure 3-1-55
1.2.10 Precautions When Doing Riser Piping Work
(1) Make sure that heat insulation work is executed on the following 2 spots to prevent any possible
water leakage due to dew condensation.
 Connect the drain hose to the drain lift pipe, and insulate them.
 Connect the drain hose to the drain outlet on the indoor unit, and tighten it with the clamp.
Drain hose (attachment)
Ceiling
(2) Secure a downward gradient of 1/100 or more for the drain pipe. To accomplish this mount
supporting brackets at an interval of 1~1.5m (3-2/7~5feet).
Indoor unit
Figure 3-1-52
Clamp (attachment)
Joint
Figure 3-1-53
Connection of drain elbow
Figure 3-1-56
Roof
1000~1500mm(39-3/8~59inch)
Drain lift pipe
Figure 3-1-58
66
Joint
Indoor unit
Figure 3-1-54
Connection of horizontal pipe
Figure 3-1-57
Hoisting stand