Installation Of Outdoor Unit; Haulage And Installation - Mitsubishi Heavy Industries FDTVA402HEN1R Technical Manual

1.5.3 Installation of outdoor unit

Notabilia as a unit designed for R410A
● Do not use any refrigerant other than R410A. R410A will rise to pressure about 1.6 times higher than that of a conventional
refrigerant.
● A unit designed for R410A has adopted a different size indoor unit operation valve charge port and a different size check joint
provided in the unit to prevent the charging of a wrong refrigerant by mistake. The processed dimension of the flared part of
a refrigerant pipe and a flare nut's parallel side measurement have also been altered to raise strength against pressure. Accord-
ingly, you are required to arrange dedicated R410A tools listed in the table on the right before installing or servicing this unit.
● Do not use a charge cylinder. The use of a charge cylinder will cause the refrigerant composition to change, which results in
performance degradation.
● In charging refrigerant, always take it out from a cylinder in the liquid phase.
● All indoor units must be models designed exclusively for R410A. Please check connectable indoor unit models in a catalog,
etc. (A wrong indoor unit, if connected into the system, will impair proper system operation)
(1) Haulage and installation (Take particular care in carrying in or moving the unit, and always perform such an
operation with two or more persons.)
CAUTION
When a units hoisted with slings for haulage, take into consideration the offset of its gravity canter position. If not propely
balanced, the unit can be thrown off-balance and fall.
(a) Delivery
1) Deliver the unit as close as possible to the installation site before re-
moving it from the package.
2) When some compelling reason necessitates the unpacking of the unit
before it is carried in, use nylon slings or protective wood pieces so as
not to damage the unit by ropes lifting it.
(b) Portage
The right hand side of the unit as viewed from the front (diffuser side) is
heavier. A person carrying the right hand side must take heed of this fact. A
person carrying the left hand side must hold with his right hand the handle
provided on the front panel of the unit and with his left hand the corner
column section.
(c) Selecting the installation location
Be careful of the following conditions and choose an installation place.
Where air is not trapped.
Where the installation fittings can be firmly installed.
Where wind does not hinder the intake and outlet pipes.
Out of the heat range of other heat sources.
A place where stringent regulation of electric noises is applicable.
Where it is safe for the drain water to be discharged.
Where noise and hot air will not bother neighboring residents.
Where snow will not accumulate.
Where strong winds will not blow against the outlet pipe.
A place where no TV set or radio receiver is placed within 5 m.
(If electrical interference is caused, seek a place less likely to cause the problem)
Where it is likely that the unit is subjected to strong winds, provide wind guards according to the following guidelines.
Strong winds can cause performance degradation, an accidental stop due to a rise of high pressure and broken fan.
Dedicated R410A tools
a)
Gauge manifold
b)
Charge hose
c) Electric scale for refrigerant charging
d) Torque wrench
e)
Flare tool
f)
Protrusion control copper pipe gauge
g)
Vacuum pump adapter
h)
Gas leak detector
137
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Pad
Wooden pallet
Wooden pallet
Heavy
Pad
Heavy