Midea V4 Plus S Series User Manual

MCAC-VTSM-2015-09 R410A All DC Inverter V4+S Series 60Hz
Installation 109
Select drainage pipe diameter according to indoor unit’s combined flow volume.
E.g. If one 1HP unit with 2L/h condensation discharge, the calculation of the combined flow volume of three
2HP units and two 1.5HP units is: 2HPx2L/hx3+1.5HPx2L/hx2 =18L
5.3.2 Relation between horizontal piping diameter and permitted displacement of condensation
PVC
piping
Inner diameter of
piping(reference value:
in.(mm))
Inner diameter
of piping
(in.(mm))
Permitted displacement(1/h)
Remark
Slope 1:50
Slope 1:100
PVC25
3/4(19)
25/32(20)
39
27
(Reference value)could not be
used for confluence pipe
PVC32
1-1/16(27)
63/64(25)
70
50
PVC40
1-11/32(34)
1-7/32(31)
125
88
Could be used for confluence
pipe
PVC50
1-47/64(44)
1-37/64(40)
247
175
PVC63
2-13/64(56)
2-1/64(51)
473
334
Attention: joints require PVC40 or larger piping.
5.3.3 Relation between vertical piping diameter and displacement of condensation.
PVC
piping
Inner diameter of
piping(reference value:
in.(mm))
Inner diameter of
piping (in.(mm))
Permitted
displacement(1/h)
Remark
PVC25
3/4(19)
25/32(20)
220
(Reference value)could not be
used for confluence pipe
PVC32
1-1/16(27)
63/64(25)
410
PVC40
1-11/32(34)
1-7/32(31)
730
Could be used for confluence
pipe
PVC50
1-47/64(44)
1-37/64(40)
1440
PVC63
2-13/64(56)
2-1/64(51)
2760
PVC75
2-19/32(66)
2-41/64(67)
5710
PVC90
3-7/64(79)
3-1/32(77)
8280
Attention: joints require PVC40 or larger piping.
5.3.4 Operation process of concentrated drainage
Install indoor unit → connect drainage pipe → water pass test and overflow water test → thermal insulation of
drainage pipe
Caution:
1) Increase drainage point as much as possible and reduce quantity of connected indoor units, to ensure
horizontal main drainage pipe is not too long.
2) Units with drainage pump and natural drainage shall have separate drainage systems..
3) Add two elbows at air outlet, and make sure its mouth faces down to prevent dirt from entering and creating
blockages.
5.4 Lifting of drainage pipe (for the unit with lift pump)
Installation of lift pipe
1. When connecting drainage pipe with indoor unit, use pipe clamp shipped with unit to fix. Glue splicing is not
permitted for ensuring convenience in repairing.
2. To ensure 1/100 slope, total lift height of drainage pipe (H) shall depend on indoor unit’s pump, and do not
set vent pipe on the lifting pipe section. After lifting vertically, immediately place down inclined, otherwise it will
cause error operation of switch at water pump. The connecting method is shown as follows:
Gradient of drain pipe should be more than 1/100
Vent

Midea V4 Plus S Series Specifications

General

Brand	Midea
Model	V4 Plus S Series
Category	Air Conditioner
Language	English