Mitsubishi Heavy Industries FDCW100VNX-A, Technical Manual

Page: 67 / 315

Installation
‘19 • HM-T-340
Outdoor unit installation
2. OUTDOOR UNIT INSTALLATION
1. Haulage
• Always carry or move the unit with two or more persons.
• The right hand side of the unit as viewed from the front (outlet
side) is heavier.
A person carrying the right hand side must take care of this
fact. A person carrying the left hand side must hold the handle
provided on the front panel of the unit with his right hand and
the corner column section of the unit with his left hand.
CAUTION
When a unit is hauled, take care of its gravity center position which is shifted towards right hand side.
If the unit is not hauled properly, it can go off balance and fall resulting in serious injury.
2. Selecting the installation location
Select the suitable installation location where:
• Unit will be stable, horizontal and free of any vibration transmission.
• There is no obstacle which can prevent smooth air circulation from inlet and outlet side of the unit.
• There is enough space for service and maintenance of unit.
• Neighbours are not bothered by noise or air generating from the unit.
• Outlet air of the unit does not blow directly to animals or plants.
• Drain water can be discharged properly.
• There is no risk of fl ammable gas leakage.
• There are no other heat sources nearby.
• Unit is not directly exposed to rain or sunlight.
• Unit is not directly exposed to oil mist and steam.
• Chemical substances like ammonia (organic fertilizer), calcium chloride (snow melting agent) and acid
(sulfurous acid etc.), which can harm the unit, will not generate or accumulate.
• Unit is not directly exposed to corrosive gases (like sulphide gas, chloride gas), sea breeze or salty
atmosphere.
• No TV set or radio receiver is placed within 1m.
• Unit is not aff ected by electromagnetic waves and/or high-harmonic waves generated by other equip-
ments.
• Strong wind does not blow against the unit outlet.
• Heavy snowfalls do not occur (If installed, provide proper protection to avoid snow accumulation).
NOTE
If the unit is installed in the area where there is a possibility of strong wind or snow accumulation, the fol-
lowing measures are required.
(1) Location of strong wind
• Place the unit with its outlet side facing the wall. • Place the unit such that the direction of air
from the outlet gets perpendicular to the wind
direction.
Over 500mm
Wind
direction
Wind
direction
• Use wind guard in case outdoor unit is installed where ambient temperature drops below -10˚C and
natural wind blows into outdoor unit directly.
For details, refer to technical manual.
(2) Location of snow accumulation
• Install the unit on the base so that the bottom is higher than snow cover surface.
• Install the unit under eaves or provide the roof on site.
3. Installation space
• There must be 1 meter or larger space between the unit and the wall in at least 1 of the 4 sides.
Walls surrounding the unit from 4 sides is not acceptable. The wall height on the outlet side should
be 1200 mm or less. Refer to the following fi gure and table for details.
(mm)
NOTE
When more than one unit are installed side by side, provide a 250mm or wider interval between them
as a service space.
CAUTION
When more than one unit are installed in parallel directions, provide suffi cient inlet space so that short-
circuiting may not occur.
4. Drain piping work (If necessary)
Carry out drain piping work if condensed water needs to be drained out.
(1) Prepare another drain tray made of metallic material for collecting drain when base heater is used.
(2) Do not use drain elbow and grommet made of plastic for drain piping when base heater for outdoor
unit is used. Plastic grommet and elbow will be damaged and burnt in worst case.
(3) In case plastic grommet and drain elbow is used in warm climate area, disconnet the connector for
heater on PCB shown in the drawing.
Do not block the drain holes when installing the
outdoor unit.
CNHEAT
(white color)
5. Installation
• Install the unit on a fl at level base.
• While installing the unit, keep space and fi x the unit’s legs with 4 anchor bolts as shown in the fi gure
below. The protrusion of an anchor bolt from the foundation surface must be kept within 15mm.
313 mm
15 mm
Anchor bolt (M10-12) ×4 pcs
200 mm over
Keep appropriate distance to
prevent snow or drained water
from clogging the drain hole
especially in cold region.
510 mm
CAUTION
• Install the unit properly so that it does not fall over during earthquake, strong wind, etc.
• Make sure that unit is installed on a fl at level base. Installing unit on uneven base may result in unit
malfunction.
Heavy
Example installation
I II III IV
Size
L1 Open 280 280 180
L2 100 75 Open Open
L3 100 80 80 80
L4 250 Open 250 Open
Inlet
(
Service
space
)
Inlet
Outlet
L3
L4
L1
L2
1. TOOLS
Locally procured parts Tools for installation work
(a) Anchor bolt(M10-M12)×4 pcs Plus headed driver Spanner wrench Vacuum pump*
(b) Putty Knife Torque wrench [14.0-62.0N/m(1.4-6.2kgf•m)] Gauge manifold *
(c) Electrical tape Saw Wrench key (Hexagon) [4mm] Charge hose *
(d) Connecting pipe
Tape measure Flaring tool set *
Vacuum pump adapter*
(Anti-reverse fl ow type)
(e) Connecting cable
(f) Power cable Pipe cutter Flare adjustment gauge Gas leak detector *
(g) Clamp and screw (for fi nishing work)
*Designed specifi cally for R410A
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