Midea V4 Plus S Series Service Manual page 109

Drain pipe
MCAC-VTSM-2015-09 R410A All DC Inverter V4+S Series 60Hz
Drain pipe
Tee joint
Tee joint
OK 0K
b. Incorrect connection:
Tee joint
Drain pipe
×
Advantages of correct connection:
1. No back flow.
2. The slope of two pipes can be regulated separately.
Disadvantages of incorrect connection:
1. Drainage interference.
2. If the fluid volume of one side is greater it will flow to areas with less volume, thus creating back flow into
areas of the system with less drainage.
3. Suspender spacing:
In general, horizontal spacing is 0.8m-1m and vertical spacing is 1.5m-2.0m. Each vertical pipe shall be
equipped with not less than two suspenders. Over spacing of suspenders on horizontal piping leads to sagging,
and creates to air resistance.
4. The highest point of drainage piping shall be designed with air hole to ensure that condensation can be
discharged smoothly. The outlet air hole shall face down to prevent dirt entering piping.
5. After finishing connection, conduct water passing test and overflowing water test to check the smoothness of
drainage and ensure there is no leakage..
6. Use appropriate adhesive for thermal insulation materials seam, and then bind with rubber or plastic
adhesive tape. The width of the adhesive tape shall not be less than 50mm to ensure firm hold and prevent
condensation.
7. The air conditioner drainage pipe shall be installed separately with other waste, rainwater and other
drainage piping.
8. The slope of drainage pipe shall be kept above 1/100.
( 1cm/1m)
above 1/100
9. In case 1/100 slope cannot be met, consider using a larger-sized pipe and its diameter to create slope.
Installation 107