Drain Pipe Connection - Mitsubishi Electric MCFH-A24WV Manual De Instalación

2. In case that pipes jut out from bottom surface of the indoor unit. (Fig. 2)
Refrigerant pipe
Refrigerant pipe
(Fig. 2)
4-7

DRAIN PIPE CONNECTION

• Use hard PVC (ø26 mm O.D.) for drain pipe D.
• Use drain pipe cover 8 which is provided in accessories, wind it around drain pipe D in the indoor unit side.
• Use vinyl chloride adhesive for joints prevent leakage.
• When the drain pipe D has to go through an indoor space, be sure to cover the drain pipe D with insulation
readily available in the market.
• For drain pipe connection, use care so as no extra force applies to unit side piping.
1. In case of connecting drain pipe D to drain-joint bush directly.
• Be sure to connect drain pipe D to drain-joint bush se-
curely as shown in the right.
• Be sure to pass drain pipe D with drain pipe cover through
knockout hole on bottom surface so as to keep an inclina-
tion.
a Drain-joint bush
b Knockout
c PVC adhesive tape
d Adhesive
8 Drain pipe cover
D Drain pipe (VP-20)
Process figure
Flare nut
Refrigerant pipe (gas)
OD ø15.88
Flare nut
Refrigerant pipe (liquid)
OD ø9.52
a
b
30
a
c
8
D
d
2. In case of connecting drain pipe D to drain-joint bush
through drain hose.
• Drain hose 7 which is contained in accessories is flexible,
so use it when drain pipe D should be alternated direction.
• Be sure to wind pipe cover which is provided in accesso-
ries around drain hose with vinyl tape.
• Cut VP-20 in dimension as shown at the right, and connect
drain-joint bush with drain hose with adhesive.
a Drain-joint bush
b Tape
c Adhesive
7 Drain hose
8 Drain pipe cover
D Drain pipe (VP-20)
G Drain-joint pipe (VP-20)
3. • Be sure that drain pipe D tilts downward (1/100 or more)
on outdoor side (drain side), and no traps or heaving exist.
• When the drain pipe D is relatively long, provide support
metal fixtures midway to eliminate waving.
• Odor trap at the end of drain pipe D is not required.
a Insulation
b Supporting metal fixture
c Downward inclination of 1/100 or more
d Air bleeder
e Do not raise
f Odor trap
g The end of drain hose is immersed in water
h Gap from the ground level is 50 mm or less
i Sewage ditch
b
8
G
a
7
50 mm
8
a
c
G
b
8
7
D
c
0.75 m - 1.5 m
b
c
a
d
e
g
f
h
i