Mitsubishi Electric M Series Manual page 553

M series
C.4.8 INSTLLATION PROCEDURE
C.4.8.1 MXZ Series
MXZ-2B30VA MXZ-2B40VA MXZ-2B52VA
INSTALLATION DIAGRAM & ACCESSORIES
SPECIFICATIONS
Power supply *1
Model
Rated Fre-
Voltage quency
MXZ-2B30VA
230 V 50 Hz
MXZ-2B40VA
MXZ-2B52VA
*1 Connect to the power switch which has a gap of 3 mm or more when open
to interrupt the source power phase. (When the power switch is shut off, it
must interrupt all phases.)
*2 Use wires in conformity with design 60245 IEC 57. Use the indoor/outdoor
connecting wire in conformity with the wire specifications specified in the
installation manual of the indoor unit.
*3 Never use pipes with thickness less than specified. The pressure resist-
ance will be insufficient.
*4 Use a copper pipe or a copper-alloy seamless pipe.
*5 Be careful not to crush or bend the pipe during pipe bending.
SELECTING PIPE SIZE AND OPTIONAL DIFFERENT-DIAMETER JOINTS
The diameter of connection pipes differs according to the type and capacity of indoor units. Match the diameters of connection pipes for indoor and outdoor units
according to the following table.
• If the diameter of connection pipes does not match the diameter of pipe end connections, use optional different-diameter joints.
Outdoor unit
Union size
Room
(Liquid/Gas)
A, B 6.35/9.52
If you use commercially available copper pipes, use the C1220t forthe R410A.
INSTALLATION DIAGRAM
Open as a rule
More than 500 mm
if the front and both
sides are open
More than
100 mm
Open as a rule
More than 500 mm if the back,
both sides and top are open
Units should be installed by licensed contractor according to local code requirements.
Wire specifications *2
Breaker Indoor/outdoor
Power supply
capacity connecting wire
2
10 A 3-core 1.0 mm
4-core
1.0/1.5 mm
15 A 3-core 2.0 mm 2
Indoor unit
Capacity
Connection pipe size (Wall thickness): Liquid/Gas
15/20/22/25/35/42
6.35(0.8)/9.52(0.8)
Optional different-diameter joint: Liquid/Gas
-/-
After the leak test, apply insulat-
ing material tightly so that there is
no gap.
When the piping is to be at-
tached to a wall containing metals
(tin plated) or metal netting, use
a chemically treated wooden
piece 20 mm or thicker between
the wall and the piping or wrap 7
to 8 turns of insulation vinyl tape
around the piping.
To use existing piping, perform
COOL operation for 30 minutes
and pump down before removing
the old air conditioner. Remake
flare according to the dimension
for new refrigerant.
More than 100 mm More than
200 mm if there are obstacles to
both sides
More than 350 mm
MULTI SYSTEM Inverter Heat Pump
Pipe length and height difference *4, *5, *6, *10
Max. pipe length
Max.
per indoor unit /
height difference
for multi-system
15 m / 20 m 10 m
2
20 m / 30 m 15 m
*6 Refrigerant pipe bending radius must be 100 mm or more.
*7 If pipe length exceeds 20 m, additional refrigerant (R410A) charge is re-
quired. (No additional charge is required for pipe length less than 20 m.)
Additional refrigerant = A × (pipe length (m) - 20)
*8 Insulation material : Heat resisting foam plastic 0.045 specific gravity
*9 Be sure to use the insulation of specified thickness. Excessive thickness
may cause incorrect installation of the indoor unit and insufficient thick-
ness may cause dew drippage.
*10 If the outdoor unit is installed higher than the indoor unit, max. height
difference is reduced to 10 m.
(Unit: mm)
ACCESSORIES
Check the following parts before installation.
(1) Drain socket
PARTS TO BE PROVIDED AT YOUR SITE
(A) Power supply cord*
(B) Indoor/outdoor unit connecting wire*
(C) Extension pipe (Refer to 1-4.)
(D) Wall hole cover
(E) Piping tape
Extension drain hose
(F) (or soft PVC hose, 15 mm inner
dia. or hard PVC pipe VP16)
(G) Refrigeration oil
(H) Putty
(I) Pipe fixing band
(J) Fixing screw for (I)
(K) Wall hole sleeve
Soft PVC hose, 15 mm inner dia. or
(L) hard PVC pipe VP16.
(For drain socket)
* Note:
Place indoor/outdoor unit connecting wire (B) and
power supply cord (A) at least 1 m away from the
TV antenna wire.
The "Q'ty" for (B) to (K) in the above table is quan-
tity to be used per indoor unit.
Outdoor unit installation
800
150 500
Air inlet
Air inlet
Air outlet
4-10 × 21 Oval holes
Max. no. of bends
Refrigerant adjust-
per indoor unit /
ment A *7
for multi system
15 / 20
20 g/m
20 / 30
1
1
1
1
1
1
1
Little
amount
1
2 to 7
2 to 7
1
1
(Unit: mm)
C-551