Mitsubishi Electric FDF100VNVD, Technical Manual

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INSTALLATION MANUAL FOR OUTDOOR UNIT
2. REFRIGERANT PIPING WORK
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.)
Inverter driven single split PAC
71V
Designed for R410A refrigerant
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 cylinder containing R410A has a pink indication mark on the top.
● 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. Accordingly, 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. Check connectable indoor unit models in a catalog, etc. (A wrong indoor unit, if connected into the system, will impair proper system
operation)
CAUTION
CAUTION
CAUTION
When a unit is hoisted with slings for haulage, take into consideration the offset of its gravity
center position. If not properly balanced, the unit can be thrown off-balance and fall.
● The use restrictions appearing in the table above are applicable to the standard pipe size combinations shown in the table below. Where an existing pipe system is utilized,
different one-way pipe length restrictions should apply depending on its pipe size. For more information, please see “ 6. UTILIZATION OF EXISTING PIPING.”
● When the 40V model is connected as an indoor unit, always use a
φ
9.52 liquid pipe for the branch (branching pipe – indoor unit) and a different diameter joint supplied with the branching pipe set for connection with the indoor unit (
φ
6.35
on the liquid pipe side).
If a
φ
6.35 pipe is used for connection with a branching pipe, a refrigerant distribution disorder may occur, causing one of the indoor units to fall short of the rated capacity.
● A riser pipe must be a part of the main. A branching pipe set should be installed horizontally at a point as close to an indoor unit as possible.
A branching part must be dressed with a heat-insulation material supplied as an accessory.
●
For the details of installation work required at and near a branching area, see the installation manual supplied with your branching pipe set.
3) Refrigerant pipe wall thickness and material
● Select refrigerant pipes of the table shown on the right wall thickness
and material as specified for each pipe size.
a
)
b
)
c
)
d
)
e
)
f
)
g )
h
)
Gauge manifold
Charge hose
Electronic scale for refrigerant charging
Torque wrench
Flare tool
Protrusion control copper pipe gauge
Vacuum pump adapter
Gas leak detector
Dedicated R410A tools
Pipe diameter [mm]
Minimum pipe wall thickness [mm]
Pipe material* 6.35
0.8
O-type pipe
9.52
0.8
O-type pipe
12.7
0.8
O-type pipe
15.88
1.0
O-type pipe
NOTE
*Phosphorus deoxidized seamless copper pipe C1220T, JIS H3300
1) Delivery
● Deliver the unit as close as possible to the installation site before removing it from the packaging.
● 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.
2) 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.
< Single type >
< Twin type >
Indoor unit (The unit of which elevation difference from the outdoor unit is the largest.)
L1
L2
L (riser)
H
Outdoor unit
Indoor unit h
L
H
Outdoor unit
Indoor unit
1) Restrictions on unit installation and use
● Check the following points in light of the indoor unit specifications and the installation site.
● Observe the following restrictions on unit installation and use. Improper installation can result in a compressor failure or performance degradation.
2) Determination of pipe size
●
Determine refrigerant pipe size pursuant to the following guidelines based on the indoor unit specifications.
One-way pipe length of refrigerant piping
Restrictions
Dimensional
restrictions
Marks appearing in the drawing on the right
50m or less
20m or less
10m or less
30m or less
15m or less
0.5m or less
L
L
−
−
H
H
−
L1
＋
L1
＋
L2
L
L1
，
L2
L1
−
L2
H
H
h Elevation difference between indoor units
Outdoor unit connected
Refrigerant piping (branch pipeL)
Indoor unit connected
Capacity of indoor unit
Branching pipe set
Refrigerant piping (branch pipe L1,L2)
Indoor unit connected
Capacity of indoor unit
In the case of a single type
φ
15.88
Flare
φ
15.88
φ
15.88
φ
12.7
φ
12.7
φ
9.52
Flare
φ
9.52
φ
9.52
φ
9.52
φ
6.35
Elevation difference between
indoor and outdoor units
Model 71V
Model 71V
Model 71V
DIS-WA1
Model 40V
×
2
Difference of pipe length after the first branching point
One-way pipe length after the first branching point
Main pipe length
Liquid pipe Gas pipe
When the outdoor unit is positioned higher,
When the outdoor unit is positioned lower,
Single type Twin type
In the case of a twin type
● Take care so that installed pipes may not touch components within a unit.
If touching with an internal component, it will generate abnormal sounds and/or vibrations.
● Carry out the on site piping work with the operation valve fully closed.
●
Give sufficient protection to a pipe end (compressed and blazed, or with an adhesive tape) so that
water or foreign matters may not enter the piping.
● Bend a pipe to a radius as large as practical.(R100
〜
R150) Do not bend a pipe repeatedly to correct
its form.
● Flare connection is used between the unit and refrigerant pipe. Flare a pipe after engaging a flare
nut onto it. Flare dimensions for R410A are different from those for conventional R407C. Although
we recommend the use of flaring tools designed specifically for R410A, conventional flaring tools can
also be used by adjusting the measurement of protrusion B with a protrusion control gauge.
● The pipe should be anchored every 1.5m or less to isolate the vibration.
●
Tighten a flare joint securely with a double spanner.
4) On-site piping work
IMPORTANT
A
B
Flared pipe end: A (mm)
Screw
Side cover
φ
6.35
φ
9.52
φ
12.7
φ
15.88
Copper
pipe outer
diameter
0
ー
0.4
Ａ
9.1
13.2
16.6
19.7
Copper pipe protrusion for flaring: B (mm)
φ
6.35
φ
9.52
φ
12.7
φ
15.88
Copper
pipe outer
diameter
In the case of a rigid (clutch) type
With an R410A tool With a conventional tool
0
〜
0.5 0.7
〜
1.3
Heavy
Pad
Wooden pallet
② Notabilia for installation
Fasten with bolts
(M10-12)
Use a thicker block to
anchor deeper.
Use a long block to
extend the width.
① Anchor bolt fixed position
● In installing the unit, fix the unit’s legs with bolts specified on the above.
● The protrusion of an anchor bolt on the front side must be kept within 15 mm.
● Securely install the unit so that it does not fall over during earthquakes or strong winds, etc.
● Refer to the above illustrations for information regarding concrete foundations.
● Install the unit in a level area. (With a gradient of 5 mm or less.)
Improper installation can result in a compressor failure, broken piping within the unit and abnormal noise generation.
6) Installation
Intake
Anchor bolt position
Outlet
60
150 150 580
87.9
880
15
19
380 340 418
19
7) To run the unit for a cooling operation, when the outdoor temperature
is –5°C or lower.
Plug the end of the pipe with tape, or other
material, and fill the pipe with nitrogen gas.
Only use nitrogen
gas (N
2
)
Taping
＜
N
2
＞
Nitrogen
Brazing
Station valve
Primary side Secondary side
0.5MPa
Hand
Relief valve
Nitrogen
gas
Brazing must be performed under a nitrogen gas flow.
Without nitrogen gas, a large quantity of foreign matters (oxidized film) are created,
causing a critical failure from capillary tube or expansion valve clogging.
About brazing
How to remove the side cover
Please remove the screw of a side cover and remove to the front.
CAUTION
Do not apply force beyond proper fastening torque in tightening the flare nut.
Fix both liquid and gas service valves at the valve main bodies as illustrated on the right, and then fasten them, applying appropriate fastening torque.
Tightening angle
(
°
)
Tightening torque
(N-m)
φ
6.35 (1/4")
φ
9.52 (3/8")
φ
12.7 (1/2")
φ
15.88(5/8")
14
〜
18
34
〜
42
49
〜
61
68
〜
82
45
〜
60
30
〜
45
30
〜
45
15
〜
20
150
200
250
300
Use a torque wrench. If a torque
wrench is not available, fasten the
flare nut manually first and then
tighten it further, using the left
table as a guide.
Recommended length
of a tool handle
(mm)
Operation valve size
(mm)
Do not hold the valve cap area with a spanner.
●
Select pipes having a wall thickness larger
than the specified minimum pipe thickness.
PSB012D909G
3) Selection of installation location for the outdoor unit
Be sure to select a suitable installation place in consideration of following conditions.
〇
A place where it is horizontal, stable and can endure the unit weight and will not allow vibration transmittance of the unit.
〇 A place where it can be free from possibility of bothering neighbors due to noise or exhaust air from the unit
〇
A place where the unit is not exposed to oil splashes.
〇
A place where it can be free from danger of flammable gas leakage.
〇
A place where drain water can be disposed without any trouble.
〇 A place where the unit will not be affected by heat radiation from other heat source.
〇
A place where snow will not accumulate.
〇
A place where the unit can be kept away 5m or more from TV set and/or radio receiver in order to avoid any radio or TV interference.
〇
A place where good air circulation can be secured, and enough service space can be secured for maintenance and service of the unit safely.
〇 A place where the unit will not be affected by electromagnetic waves and/or high-harmonic waves generated by other equipment.
〇
A place where chemical substances like sulfuric gas, chloric gas, acid and alkali (including ammonia), which can harm the
unit, will not be generated and not remain.
〇 A place where strong wind will not blow against the outlet air blow of the unit.
4) Caution about selection of installation location
(1) If the unit is installed in the area where the snow will accumulate, following measures are required.
The bottom plate of unit and intake, outlet may be blocked by snow.
3. Install the unit under eaves
or provide the roof on site.
1. Install the unit on the base so
that the bottom is higher than
snow cover surface.
2. Provide a snow hood to the outdoor
unit on site.
Regarding outline of a snow hood,
refer to our technical manual.
● Model name and power source
● Refrigerant piping length
●
Piping, wiring and miscellaneous small parts
● Indoor unit installation manual
5) Installation space
● Walls surrounding the unit in the four sides are not acceptable.
●
There must be a 1-meter or larger space in the above.
● When more than one unit are installed side by side, provide a 250mm or wider interval between them as a service space. In
order to facilitate servicing of controllers, please provide a sufficient space between units so that their top plates can be
removed easily.
● Where a danger of short-circuiting exists, install guide louvers.
● When more than one unit are installed, provide sufficient intake space consciously so that short-circuiting may not occur.
● Where piling snow can bury the outdoor unit, provide proper snow guards.
Intake
(
service
space
)
Intake
Outlet
L
3
L
2
L
4
L
1
71V
Example installation
Size
L1
L2
L3
L4
Ⅰ
Open
300
100
250
Ⅱ
Open
250
150
250
Ⅲ
500
Open
100
250
(mm)
Wind direction
Wind direction Over 500 mm
2.Install the outlet air blow side of
the unit in a position perpendicular
to the direction of wind.
1.Install the outlet air blow side of the
unit to face a wall of building, or
provide a fence or a windbreak screen.
3.The unit should be installed on
the stable and level foundation.
If the foundation is not level,
tie down the unit with wires.
Since drain water generated by defrost control may freeze, following measures are required.
● Don’t execute drain piping work by using a drain elbow and drain grommets (optional parts). [Refer to Drain piping work.]
● Recommend setting Defrost Control (SW3-1) and Snow Guard Fan Control (SW3-2). [Refer to Setting SW3-1, SW3-2.]
(2) If the unit can be affected by strong wind, following measures are required.
Strong wind can cause damage of fan (fan motor), or can cause performance degradation, or can trigger anomalous stop
of the unit due to rising of high pressure.
● When the outdoor air temperature is -5°C or lower, provide a snow hood to the outdoor unit on site. So that strong wind
will not blow against the outdoor heat exchanger directly. Regarding outline of a snow hood, refer to our technical 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.
●
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 in the event of leakage 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.
●
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.
WARNING
●
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.
If the unit weights more than 20kg, it must be carried by two or more persons. Do not carry by the plastic straps, always use the carry handle when carrying the
unit by hand. Use gloves to minimize the risk of cuts by the aluminum fins.
●
Dispose of any packing materials correctly.
Any remaining packing materials can cause personal injury as it contains nails and wood. And to avoid danger of suffocation, be sure to keep the plastic
wrapper away from children and to dispose after tear it up.
● Pay attention not to damage the drain pan by weld spatter when welding work is done near the indoor unit.
If weld spatter entered into the indoor unit during welding work, it can cause pin-hole in drain pan and result in water leakage. To prevent such damage, keep the indoor unit in its packing or cover it.
●
Be sure to insulate the refrigerant pipes so as not to condense the ambient air moisture on them.
Insufficient insulation can cause condensation, which can lead to moisture damage on the ceiling, floor, furniture and any other valuables.
● Be sure to perform air tightness test by pressurizing with nitrogen gas after completed refrigerant piping work.
If the density of refrigerant exceeds the limit in the event of refrigerant leakage in the small room, lack of oxygen can occur, which can cause serious accidents.
●
Perform installation work properly according to this installation manual.
Improper installation can cause abnormal vibrations or increased noise generation.
● Earth leakage breaker must be installed
If the earth leakage breaker is not installed, it can cause fire or electric shocks.
●
Do not use any materials other than a fuse with the correct rating in the location where fuses are to be used.
Connecting the circuit with copper wire or other metal thread can cause unit failure and fire.
● Do not install the unit near the location where leakage of combustible gases can occur.
If leaked gases accumulate around the unit, it can cause fire.
●
Do not install the unit where corrosive gas (such as sulfurous acid gas etc.) or combustible gas (such as thinner and petroleum gases) can
accumulate or collect, or where volatile combustible substances are handled.
Corrosive gas can cause corrosion of heat exchanger, breakage of plastic parts and etc. And combustible gas can cause fire.
●
Secure a space for installation, inspection and maintenance specified in the manual.
Insufficient space can result in accident such as personal injury due to falling from the installation place..
●
When the outdoor unit is installed on a roof or a high place, provide permanent ladders and handrails along the access route and fences and handrails around the outdoor unit.
If safety facilities are not provided, it can cause personal injury due to falling from the installation place.
●
Do not install nor use the system close to the equipment that generates electromagnetic fields or high frequency harmonics
Equipment such as inverters, standby generators, medical high frequency equipments and telecommunication equipments can affect the system, and cause
malfunctions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.
●
Do not install the outdoor unit in a location where insects and small animals can inhabit.
Insects and small animals can enter the electric parts and cause damage or fire. Instruct the user to keep the surroundings clean.
●
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.
・ Locations where any machines which generate high frequency harmonics are used.
・
Locations with salty atmospheres such as coastlines
・
Locations with heavy snow (If installed, be sure to provide base flame and snow hood mentioned in the manual)
・
Locations where the unit is exposed to chimney smoke
・
Locations at high altitude (more than 1000m high)
・
Locations with ammonic atmospheres
・
Locations where heat radiation from other heat source can affect the unit
・
Locations without good air circulation.
・
Locations with any obstacles which can prevent inlet and outlet air of the unit
・
Locations where short circuit of air can occur (in case of multiple units installation)
・
Locations where strong air blows against the air outlet of outdoor unit
It can cause remarkable decrease in performance, corrosion and damage of components, malfunction and fire.
●
Do not install the outdoor unit in the locations listed below.
・ Locations where discharged hot air or operating sound of the outdoor unit can bother neighborhood.
・ Locations where outlet air of the outdoor unit blows directly to an animal or plants. The outlet air can affect adversely to the plant etc.
・ Locations where vibration can be amplified and transmitted due to insufficient strength of structure.
・
Locations where vibration and operation sound generated by the outdoor unit can affect seriously. (on the wall or at the place near bed room)
・
Locations where an equipment affected by high harmonics is placed. (TV set or radio receiver is placed within 5m)
・
Locations where drainage cannot run off safely.
It can affect surrounding environment and cause a claim
● Do not use the unit for special purposes such as storing foods, cooling precision instruments and preservation of animals, plants or art.
It can cause the damage of the items.
● Do not touch any buttons with wet hands
It can cause electric shocks
●
Do not touch any refrigerant pipes with your hands when the system is in operation.
During operation the refrigerant pipes become extremely hot or extremely cold depending the operating condition, and it can cause burn injury or frost injury.
●
Do not clean up the unit with water
It can cause electric shocks
● Do not operate the outdoor unit with any article placed on it.
You may incur property damage or personal injure from a fall of the article.
●
Do not step onto the outdoor unit.
You may incur injury from a drop or fall.
CAUTION
SAFETY PRECAUTIONS
Check before installation work
◎
This installation manual deals with outdoor units and general installation specifications only. For indoor units, refer to the respective installation manuals supplied with the units.
◎
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.
●
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.
● The precautions described below are divided into and . The matters with possibilities leading to serious consequences such as death or serious personal
injury due to erroneous handling are listed in the and the matters with possibilities leading to personal injury or damage of the unit due to erroneous handling including
probability leading to serious consequences in some cases are listed in .
These are very important precautions for safety. Be sure to observe all of them without fail.
●
The meaning of "Marks" used here are as shown below.
● 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
Never do it under any circumstance. Always do it according to the instruction
WARNING
WARNING
CAUTION
CAUTION
K
9.3 Installation of outdoor unit
(1) Model FDC71VNX
PSB012D909G
K
Page 56.