Other Equipment; Snow Cover Surface, And - Mitsubishi Heavy Industries FDE40ZMXVG Technical Manual

2.9.4 Installation of outdoor unit
(1) Models FDC71, 90VNP
INSTALLATION MANUAL FOR OUTDOOR UNIT
• This installation manual deals with outdoor units and general installation specifications only. For indoor units, refer to page 67.
• When install the unit, be sure to check whether the selection of installation place, power source specifications, usage limitation (piping length, height differences between indoor and outdoor units, power
source voltage and etc.) and installation spaces.
• Read the "SAFETY PRECAUTIONS" carefully first of all and strictly follow it during the installation work in order
to protect yourself.
• The precautionary items mentioned below are distinguished into two levels,
WARNING : Wrong installation would cause serious consequences such as injuries or death.
CAUTION : Wrong installation might cause serious consequences depending on circumstances.
Both mentions the important items to protect your health and safety so strictly follow them by any means.
• Be sure to confirm no anomaly on the equipment by commissioning after completed installation and explain the
operating methods as well as the maintenance methods of this equipment to the user according to the owner's
manual.
• Installation must be carried out by the qualified installer.
If you install the system by yourself, it may cause serious trouble such as water leaks,
electric shocks, fire and personal injury, as a result of a system malfunction. Do not
carry out the installation and maintenance work except by the qualified installer.
• Install the system in full accordance with the installation manual.
Incorrect installation may cause bursts, personal injury, water leaks, electric
shocks and fire.
• Be sure to use only for household and residence.
If this appliance is installed in inferior environment such as machine shop and etc.,
it can cause malfunction.
• When installing in small rooms, take prevention measures not to
exceed the density limit of refrigerant in the event of leakage, referred
by the formula (accordance with ISO5149).
If the density of refrigerant exceeds the limit, please consult the dealer and install
the ventilation system, otherwise lack of oxygen can occur, which can cause serious
accident.
• Use the original accessories and the specified components for
installation.
If parts other than those prescribed by us are used, It may cause water leaks,
electric shocks, fire and personal injury.
• Install the unit in a location with good support.
Unsuitable installation locations can cause the unit to fall and cause material
damage and personal injury.
• Ensure the unit is stable when installed, so that it can withstand
earthquakes and strong winds.
Unsuitable installation locations can cause the unit to fall and cause material
damage and personal injury.
• Ventilate the working area well in the event of refrigerant leakage during
installation.
• Ensure that no air enters in the refrigerant circuit when the unit is
installed and removed.
If air enters in the refrigerant circuit, the pressure in the refrigerant circuit
becomes too high, which can cause burst and personal injury.
• Do not processing, splice the power cord, or share a socket with other power plugs.
This may cause fire or electric shock due to defecting contact, defecting insulation
and over-current etc.
• Carry out the electrical work for ground lead with care.
Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line's ground lead. Incorrect grounding can cause unit faults such as electric shocks due to short-circuiting.
• Use the circuit breaker for all pole correct capacity. Circuit breaker
should be the one that disconnect all poles under over current.
SAFETY PRECAUTIONS
• Keep the installation manual together with owner's manual at a place where any user can read at any time.
Moreover if necessary, ask to hand them to a new user.
WARNING and CAUTION . • For installing qualified personnel, take precautions in respect to themselves by using suitable protective
clothing, groves, etc., and then perform the installation works.
• Please pay attention not to fall down the tools, etc. when installing the unit at the high position.
• If unusual noise can be heard during operation, consult the dealer.
• The meanings of "Marks" used here are shown as follows:
Never do it under any circumstances.
WARNING
If the refrigerant comes into contact with naked flames, poisonous gas is produced.
• Use the prescribed pipes, flare nuts and tools for R410A.
Using existing parts (for R22 or R407C) can cause the unit failure and serious
accidents due to burst of the refrigerant circuit.
• Tighten the flare nut by torque wrench with specified method.
If the flare nut were tightened with excess torque, this may cause burst and
refrigerant leakage after a long period.
• Do not open the service valves for liquid line and gas line until completed
refrigerant piping work, air tightness test and evacuation.
If the compressor is operated in state of opening service valves before completed
connection of refrigerant piping work, air can be sucked into refrigerant circuit,
which can cause bust or personal injury due to anomalously high pressure in the
refrigerant.
• The electrical installation must be carried out by the qualified electrician
in accordance with "the norm for electrical work" and "national wiring
regulation", and the system must be connected to the dedicated circuit.
Power supply with insufficient capacity and incorrect function done by improper
work can cause electric shocks and fire.
• Be sure to shut off the power before starting electrical work.
Failure to shut off the power can cause electric shocks, unit failure or incorrect
function of equipment.
• Be sure to use the cables conformed to safety standard and cable
ampacity for power distribution work.
Unconformable cables can cause electric leak, anomalous heat production or fire.
• This appliance must be connected to main power source by means of a
circuit breaker or switch (fuse:20A) with a contact separation of at least
3mm.
• Arrange the wiring in the control box so that it cannot be pushed up
further into the box. Install the service panel correctly.
• Do not bundling, winding or processing for the power cord. Or, do not
deforming the power plug due to tread it.
This may cause fire or heating.
• Do not run the unit with removed panels or protections.
Touching rotating equipments, hot surfaces or high voltage parts can cause
personal injury due to entrapment, burn or electric shocks.
CAUTION
• Take care when carrying the unit by hand.
If the unit weights more than 20kg, it must be carried by two or more persons. Do
PCA012D057C
R410A REFRIGERANT USED
Always do it according to the instruction.
Incorrect installation may result in overheating and fire.
• Use the prescribed cables for electrical connection, tighten the cables
securely in terminal block and relieve the cables correctly to prevent
overloading the terminal blocks.
Loose connections or cable mountings can cause anomalous heat production or fire.
• Be sure to fix up the service panels.
Incorrect fixing can cause electric shocks or fire due to intrusion of dust or water.
• Be sure to switch off the power source in the event of installation,
inspection or servicing.
If the power source is not shut off, there is a risk of electric shocks, unit failure or
personal injury due to the unexpected start of fan.
• Stop the compressor before removing the pipe after shutting the
service valve on pump down work.
If the pipe is removed when the compressor is in operation with the service valve
open, air would be mixed in the refrigeration circuit and it could cause explosion
and injuries due to abnormal high pressure in the cooling cycle.
• Only use prescribed option parts. The installation must be carried out
by the qualified installer.
If you install the system by yourself, it can cause serious trouble such as water
leaks, electric shocks, fire.
• Be sure to wear protective goggles and gloves while at work.
• Earth leakage breaker must be installed.
If the earth leakage breaker is not installed, it can cause electric shocks.
• Appliance is not to be used by children or persons with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction.
Children being supervised not to play with appliance.
• Do not perform any change of protective device itself or its setup condition.
The forced operation by short-circuiting protective device of pressure switch and
temperature controller or the use of non specified component can cause fire or burst.
• When perform the air-conditioner operation (cooling or drying operation)
in which ventilator is installed in the room. In this case, using the
Check before installation
• Model name and power source
• Refrigerant piping length
• Piping, wiring and miscellaneous s
• Indoor unit installation manual
Accessories for outdoor un
1 Grommet (Heat pump type only
2 Drain elbow (Heat pump type on
Reducer set ø9.52 ø6.35
3
Reducer set ø15.88 ø12.7
4
1. HAULAGE AND
When a unit i
CAUTION
center positio
1) Delivery
●
Deliver the unit as close as
the packaging.
●
When you have to unpack th
installation point, hoist the u
you may not damage the un
2) Portage
● The right hand side of the un
A person carrying the right h
the left hand side must hold
of the unit and with his left
3) Selection of insta
Be sure to select a suitable in
〇 A place where it is horizon
of the unit.
〇 A place where it can be fre
〇 A place where the unit is n
〇 A place where it can be fre
〇 A place where drain water
〇 A place where the unit wil
〇 A place where snow will n
〇 A place where the unit can
radio or TV interference.
〇 A place where good air cir
and service of the unit saf
〇 A place where the unit will

other equipment.

〇 A place where chemical su
harm the unit, will not be g
〇 If a operation is conducted
at a place where it is not in
〇 A place where strong wind
Do not install the unit in plac
melting agent), exposed to am
4) Caution about sele
(1) If the unit is installed in th
The bottom plate of unit an
1
Install the unit on the ba
that the bottom is highe

snow cover surface, and

draining water is secure