Mitsubishi Heavy Industries MHI FDU71VNXVF1 Technical Manual page 236

2.9.4 Installation of outdoor unit
◎This installation manual deals with outdoor units and general installation specifications only. For indoor units, refer to page 211.
◎When install the unit, be sure to check whether the selection of installation place, power supply specifications, usage limitation (piping length, height
differences between indoor and outdoor units, power supply voltage and etc.) and installation spaces
SAFETY PRECAUTIONS
● We recommend you to read this "SAFETY PRECAUTIONS" carefully before the installation work in order to gain full advantage of the functions of the unit and to
avoid malfunction due to mishandling.
WARNING
●
The precautions described below are divided into
death or serious personal injury due to erroneous handling are listed in the
damage of the unit due to erroneous handling including probability leading to serious consequences in some cases are listed in
very important precautions for safety. Be sure to observe all of them without fail.
● The meaning of "Marks" used here are as shown below.
Never do it under any circumstance.
●
For 3 phase power source outdoor unit,EN61000-3-2 is not applicable if consent by the utility company or nortification to the utility company is given before usage.
●
3 phase power source unit, both indoor and outdoor, is suitable for installation in a commercial and light industrial environment. If installed as a house-hold
appliance it could cause electromagnetic interference.
●
5 and 6 HP units of single phase power source are equipment complying with IEC 61000-3-12.
●
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.
● 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
● 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.
● Install the system in full accordance with the instruction manual.
Incorrect installation may cause bursts, personal injury, water leaks, electric shocks and fire.
● Use the original accessories and the specified components for installation.
If parts other than those prescribed by us are used, It may cause fall of the unit, water leaks, electric shocks, fire, refrigerant leak, substandard
performance, control failure and personal injury.
● When installing in small rooms, take prevention measures not to exceed the density limit of refrigerant
accordance with ISO5149.
Consult the expert about prevention measures. If the density of refrigerant exceeds the limit in the event of leakage, lack of oxygen can occur, which
can cause serious accidents.
● Ventilate the working area well in the event of refrigerant leakage during installation.
If the refrigerant comes into contact with naked flames, poisonous gas is produced.
● After completed installation, check that no refrigerant leaks from the system.
If refrigerant leaks into the room and comes into contact with an oven or other hot surface, poisonous gas is produced.
● Hang up the unit at the specified points with ropes which can support the weight in lifting for portage. And to avoid jolting out of alignment,
be sure to hang up the unit at 4-point support.
An improper manner of portage such as 3-point support can cause death or serious personal injury due to falling of the unit
● 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.
● 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.
● 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.
● Arrange the wiring in the control box so that it cannot be pushed up further into the box. Install the service panel correctly.
Incorrect installation may result in overheating and fire.
● 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. Never connect the grounding wire to a gas pipe because if gas leaks,it could cause explosion or ignition.
● Use the circuit breaker for all pole with correct capacity.
Using the incorrect circuit breaker, it can cause the unit malfunction and fire.
● Install isolator or disconnect switch on the power supply wiring in accordance with the local codes and regulations.
The isolator should be locked in accordanced with EN60204-1．
● Take care when carrying the unit by hand.
CAUTION
and . The matters with possibilities leading to serious consequences such as
WARNING and the matters with possibilities leading to personal injury or
Always do it according to the instruction
WARNING
in the event of leakage
CAUTION
Check before installation work
[ Accessory ]
Edging
CAUTION . These are
●
Model name and power source
●
Refrigerant piping length
●
Piping, wiring and miscellaneous small parts
●
Indoor unit installation manual
● Do not perform brazing work in the airtight room
It can cause lack of oxygen.
● 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 using double spanners and torque wrench according to prescribed method. Be sure not to
tighten the flare nut too much.
Loose flare connection or damage on the flare part by tightening with excess torque can cause burst or refrigerant leaks which
may result in lack of oxygen.
● 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, you
may incur frost bite or injury from an abrupt refrigerant outflow and air can be sucked into refrigerant circuit, which can cause
burst or personal injury due to anomalously high pressure in the refrigerant
● Only use prescribed optional 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.
● 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.
● Be sure to switch off the power supply in the event of installation, inspection or servicing.
If the power supply is not shut off, there is a risk of electric shocks, unit failure or personal injury due to the unexpected start of fan.
● Consult the dealer or an expert regarding removal of the unit.
Incorrect installation can cause water leaks, electric shocks or fire.
● Stop the compressor before closing valve and disconnecting refrigerant pipes in case of pump down operation.
If disconnecting refrigerant pipes in state of opening service valves before compressor stopping, you may incur frost bite or
injury from an abrupt refrigerant outflow and air can be sucked, which can cause burst or personal injury due to anomalously
high pressure in the refrigerant circuit
● 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 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.
● Be sure to fix up the service panels.
Incorrect fixing can cause electric shocks or fire due to intrusion of dust or water.
● Do not perform any repairs or modifications by yourself. Consult the dealer if the unit requires repair.
If you repair or modify the unit, it can cause water leaks, electric shocks or fire.
● Do not use the base flame for outdoor unit which is corroded or damaged due to long periods of operation.
Using an old and damage base flame can cause the unit falling down and cause personal injury.
● Do not install the unit in the locations listed below
・Locations where carbon fiber, metal powder or any powder is floating.
・Locations where any substances that can affect the unit such as sulphide gas, chloride gas, acid and alkaline can occur.
・Vehicles and ships
・Locations where cosmetic or special sprays are often used.
・Locations with direct exposure of oil mist and steam such as kitchen and machine plant.
PSB012D923N
Inverter driven single split PAC
100V・ 125V・ 140V
Designed for R410A refrigerant
1 piece knock-out hole protection
3) Selection of in
Be sure to select a suitab
〇 A place where it is hori
〇 A place where it can be
〇 A place where the unit
〇 A place where it can be
〇 A place where drain wa
〇 A place where the unit
〇 A place where snow wi
〇 A place where the unit ca
〇 A place where good air cir
〇 A place where the unit w
〇 A place where chemica
unit, will not be generat
〇 A place where strong w
4) Caution about s
(1) If the unit is installed in
The bottom plate of uni
1. Install the unit on the ba
that the bottom is higher
snow cover surface.
Since drain water generated
●
Don't execute drain piping
● Recommend setting Defro
(2) If the unit can be affect
Strong wind can cause
stop of the unit due to
1.Install the outlet air blo
unit to face a wall of b
provide a fence or a w
Over 500 mm
2. REFRIGERA
1) Restrictions on
●
Check the following poi
●
Observe the following re
Descriptions
One-way pipe length of
refrigerant piping
Main pipe length
One-way pipe length between the first
branching point from to the second
branching point
One-way pipe length after the first
branching point
One-way pipe length after the
first branching point and second
branching point
One-way pipe length difference
from the first branching point to
the indoor unit
One-way pipe length difference
from the second branching point
to the indoor unit
Elevation difference between
indoor and outdoor units
Elevation difference between indoor un
● T
CAUTION
u
● W
t
Note (1) I