Mitsubishi Heavy Industries FDT200VSAWPVH Service Manual page 167

1. HAULAGE AND INSTALLATION
When a unit is hoisted with slings for haulage, take into consideration the offset of its gravity
CAUTION
center position.
If not properly balanced, the unit can be thrown off-balance and fall.
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.
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.
Do not install the unit in places which exposed to sea breeze (e.g. coastal area)
or calcium chloride (e.g. snow melting agent), exposed to ammonia substance (e.g. organic fertilizer).
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.
1. Install the unit on 2. Provide a snow hood to
the base so that
the bottom is higher
than snow cover
surface.
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.]
●
Attach heater on a base plate on site, if there is possibility to freeze drain water.
In case that the product has a corrective drainage system, the drainage paths should have suitable measure against freezing but
be sure not to melt the material of drainage paths with heat.
(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.
1.Install the outlet air blow side of the 2.Install the outlet air blow side of
unit to face a the unit in a position perpendicular
wall of building, to the direction
or provide a of wind.
fence or a
windbreak
screen.
Over 500 mm
2. REFRIGERANT PIPING WORK
1) Restrictions on unit installation and use
● Check the following points against the specification of the indoor unit and the installation site.
●
Observe the following restrictions regarding unit installation and use. Improper installation can cause compressor failure or degradation of performance.
●
The total liquid piping length of the system is restricted by the equivalent length (Le).
The equivalent length (Le) is a virtual length corresponding to an equivalent length of liquid piping using a diameter of 12.7mm.
● FDC200V
Restriction Dimensional restrictions
Total equivalent length (Liquid piping) ≦ 70 m
≦ 40m (L：φ 9.52 )
Liquid piping
40–70m(L：φ 12.7)
One–way pipe length of
refrigerant piping
Gas piping ≦ 70m
Liquid piping ≦ 70m
≦ 35m (L：φ 22.22)
Main pipe length
Gas piping
35–70m (L：φ 25.4 or
φ 28.58)
One way pipe length from the first branching
≦ 5m
point to the second branching point
≦ 30m
One–way pipe length after the first branching point
One–way pipe length from the first branching point to
≦ 27m
indoor units through the second branching point
≦ 10m
Twin Type, W–Twin
One–way pipe length
difference from the first
branching point to the indoor
units Triple Type(A) ≦ 3m
Triple Type(B) 3m 〜 10m
One–way pipe length difference from the second
≦ 10m
branching point to the indoor unit
≦ 15m
Total pipe length after the second branching point
When the outdoor unit ≦ 50m (3)
is positioned higher
Elevation difference between
indoor and outdoor units
When the outdoor unit
≦ 15m
is positioned lower
Elevation difference between indoor units ≦ 0.5m
For model 200V, always use φ12.7mm liquid main pipe when one-way piping length exceeds
●
CAUTION
40m and φ9.52mm if it is 40m or less.
If φ9.52mm liquid pipe is used in an installation having one-way pipe longer than 40m, it may cause
degradation of performance and/or water drops in the indoor unit.
Always use φ25.4mm or φ28.58mm gas main pipe "L" when the length of "L" exceeds 35m.
●
If φ22.22mm gas pipe is used in an installation having one-way pipe longer than 35m, it may cause
degradation of performance and/or water drops in the indoor unit.
2) Determination of pipe size
●
Determine refrigerant pipe size pursuant to the following guidelines based on the indoor unit specifications.
Outdoor unit connected
Refrigerant piping (main pipe L)
Indoor unit connected
In the case of a single type
Capacity of indoor unit
Branching pipe set
Refrigerant piping (branch pipe L1,L2)
In the case of a twin type
Indoor unit connected
Capacity of indoor unit
Branching pipe set
Refrigerant piping (branch pipe L1,L2,L3)
In the case of a triple type A
Indoor unit connected
Capacity of indoor unit
Branching pipe set
Refrigerant piping (branch pipe La,L1)
Branching pipe set
In the case of a triple type B
Refrigerant piping (branch pipe L2,L3)
Indoor unit connected
Capacity of indoor unit
Branching pipe set
Refrigerant piping (branch pipe La,Lb)
Branching pipe set
In the case of a W-twin type
Refrigerant piping (branch pipe L1,L2,L3,L4)
Indoor unit connected
Capacity of indoor unit
When the model 50V or model 60V model is connected as an indoor unit, always use a φ9.52 liquid pipe for the branch (branching pipe – indoor unit) and a different diameter joint supplied with the
●
CAUTION
branching pipe set for connection with the indoor unit ( φ 6.35 on the liquid pipe side).
If a φ6.35 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) How to use pipe reducer
.
φ22.22(OD) size of the refrigerant gas pipe can
●
be used by using accessory pipe A,B.
Accessory pipe A Accessory pipe B
φ 22.22 (ID) φ 22.22 (ID)
φ 25.4 (ID)
Field piping
φ22.22(OD)
Branching pipe set
(DIS-WB1G,DIS-TB1G)
(Take particular care in carrying in or moving the unit, and always perform such an operation with two or more persons.)
Wooden pallet
3. Install the unit
the outdoor unit on site. under eaves or
Regarding outline providen the
of a snow hood, roof on site.
refer to our
technical
manual.
3.The unit should be installed on the
stable and level foundation. If the
foundation
is not level,
tie down
the unit
Wind
with wires.
direction
Wind
direction
●
Marks appearing in the drawing
(2)
Single Twin Triple (A) Triple(B) W–twin
Le Le Le Le Le
Total equivalent length(Liquid piping)
L+L1, One-way pipe length of refrigerant piping
L+L1 L+La+L1, L+La+L2
L+L1 (1)
L L+L2,
L+L2 L+Lb+L3, L+Lb+L4
L+L3
Main pipe length
L L L L L
One-way pipe length after the first branching point
– – – La –
La+L1, La+L2
– L1,L2 L1,L2,L3 L1 One-way pipe length difference from the first
La+L3, La+L4
branching point to the indoor units
– – – La+L2,La+L3 –
One-way pipe length difference from the second
|(L1+La)–(L3+Lb)|,
branching point to the indoor unit
|(L1+La)–(L4+Lb)|,
– |L1–L2| – – |(L2+La)–(L3+Lb)|, Total pipe length after the second branching point
|(L2+La)–(L4+Lb)|,
|L1–L2|, |L3–L4|
Elevation difference between
|L1–L2|,|L2–
– – – – indoor and outdoor units
L3|,|L3–L1|
L1–(La+L2),
– – – –
L1–(La+L3) (1) Elevation difference between indoor units
– – – |L2–L3| |L1–L2|,|L3–L4|
[Formula to calculate equivalent length (Le)]
– – – – L1+L2,L3+L4
In case of new piping
In case of existing piping
H H H H H
– h h1,h2,h3 h1,h2,h3 h1,h2,h3,h4,h5,h6
Notes: (1) Install the indoor units so that L + L1 becomes the longest one-way pipe.
Model 200V
Gas pipe Liquid pipe Gas pipe
φ22.22 φ9.52 φ22.22
Brazing Flare Brazing
φ22.22 or φ25.4 or φ28.58 φ9.52 or φ12.7 φ22.22 or φ25.4 or φ28.58
φ25.4 φ12.7 φ25.4
Model 200V Model 250V, 280V
DIS-WB1G
φ15.88 φ9.52
φ15.88
φ15.88 φ9.52 φ15.88
Model 100V×2 Model 125V×2, 140V×2
DIS-TB1G
φ15.88 φ9.52
φ15.88 φ9.52
Model 71V×3
DIS-WB1G
φ15.88 φ9.52 φ15.88
DIS-WA1G
φ15.88 φ9.52
φ12.7
φ15.88 φ9.52 φ12.7
Model 71V×3 Model 60V×2＋ Model 125V
DIS-WB1G
φ15.88 φ9.52
φ15.88
DIS-WA1G
φ12.7 φ9.52 φ12.7
φ12.7 φ9.52
φ12.7
Model 50V×4 Model 60V×4, 71V×4
φ25.4(OD) size of the refrigerant gas pipe can be used
●
by using accessory pipe A and joint pipe C.
Ready joint C yourself. Need not accessory pipe B.
Accessory pipe A Field piping
φ 22.22 (ID) φ25.4(OD)
φ 25.4 (ID)
Joint pipe C
Branching pipe set
(DIS-WB1G,DIS-TB1G)
Pad
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.
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.
●
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.
●
A barrier wall placed in front of the exhaust diffuser must not be higher than the unit.
※In case that outdoor temperature is 44˚C or lower
Example installation
Ⅰ
Size
Open
L1
L2 300
L3 150
250 (5)
L4
※ If unit is installed in L4 space with ( )'s condition, secure space of 250mm in lateral (L4) by unit movement at the
time of exchange work of compressor.
6) Installation
① Anchor bolt fixed position
Intake
Outlet
190 580
●
In installing the unit, fix the unit's legs with bolts specified on the left.
●
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 left 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.
7) To run the unit for a cooling operation, when the outdoor temperature
is –5°C or lower.
●
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.
FDC250/280V
Restriction Dimensional restrictions
Single
[250V] ≦ 70m
Le
[280V] ≦ 60m
[250V] ≦ 70m
L
[280V] ≦ 60m
[250V] ≦ 70m
Liquid piping
[280V] ≦ 60m
≦ 35m (L：φ 22.22)
L
[250V] 35-70m
Gas piping
[280V] 35-60m
(L：φ 25.4 or φ 28.58)
≦ 30m
–
≦ 10m –
≦ 10m
–
≦ 15m –
When the outdoor unit
≦ 50m (3)
is positioned higher
H
When the outdoor unit
≦ 15m
is positioned lower
≦ 0.5m –
Le = (length of φ 12.7) + 0.52 × (length of φ 9.52)
Le = (length of φ 12.7) + 0.52 × (length of φ 9.52) + 1.56 × (length of φ 15.88)
(2) Connect the indoor unit with the maximum capacity to L1.
(3) If the outdoor temperature is above 43°C, the dimensional restriction is ≦ 30m.
Model 250V, 280V
Liquid pipe Gas pipe Liquid pipe
φ12.7 φ22.22 φ12.7
Flare Brazing Flare
φ12.7 φ22.22 or φ25.4 or φ28.58 φ12.7
φ12.7
−
DIS-WB1G
φ9.52
−
φ9.52
− −
DIS-WB1G DIS-WB1G
φ9.52 φ15.88 φ9.52
DIS-WA1G
DIS-WA1G
φ15.88 φ9.52
φ9.52
φ6.35 φ15.88 φ9.52
Model 71V×2＋ Model 100V, 71V×2＋ 140V
DIS-WB1G DIS-WB1G
φ15.88 φ9.52
φ9.52
DIS-WA1G × 2
DIS-WA1G×2
φ9.52 φ15.88 φ9.52
φ6.35 φ15.88 φ9.52
Model 71V×4
φ28.58(OD) size of the refrigerant gas pipe can be
●
used by using accessory pipe A and joint pipe C,D.
Ready joint C and D yourself.
φ 25.4 (ID)
Accessory pipe A Field piping
φ 22.22 (ID) φ28.58(OD)
Branching pipe set
(DIS-WB1G,DIS-TB1G)
Joint pipe C Joint pipe D
166
- -
'21 • PAC-SM-383
※In case that outdoor temperature is higher than 44˚C
（mm） （mm）
Example installation
Ⅱ Ⅲ Ⅰ Ⅱ Ⅲ
Size
Open 500 Open Open 2400
L1
5 Open L2 300 750 Open
300 150 300 300
L3 300
250 (5) 250 (5) 750 300 1500
L4
② Notabilia for installation
Fasten with bolts
(M10-12)
200
Use a thicker block to anchor deeper.
Use a long block to extend the width.
< Single type >
Marks appearing in the drawing
H
Twin Triple W-twin
Le Le
L+L1 L+La+L1, L+La+L2 Outdoor unit
L+L2 L+Lb+L3, L+Lb+L4
< Twin type >
Indoor unit
(The unit of which elevation difference from the outdoor unit is the largest.)
L L
La+L1, La+L2
L1,L2
La+L3, La+L4
–
|(L1+La)-(L3+Lb)|, H
L1
|(L1+La)-(L4+Lb)|,
|L1-L2| |(L2+La)-(L3+Lb)|,
|(L2+La)-(L4+Lb)|,
|L1-L2|, |L3-L4|
– |L1-L2|,|L3-L4|
Outdoor unit
– L1+L2,L3+L4
< Triple type A >
H H
Indoor unit
(The unit of which elevation difference from the outdoor unit is the largest.)
h h1,h2,h3,h4,h5,h6
H
L1
Outdoor unit
< Triple type B >
Indoor unit (1) (2)
(The unit of which elevation difference from the outdoor unit is the largest.)
H
L1
Outdoor unit
< W-twin type >
Indoor unit
(The unit of which elevation difference from the outdoor unit is the largest.)
h1
L1
H
La
Outdoor unit
About brazing
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.
Plug the end of the pipe with tape, or other
Station valve
material, and fill the pipe with nitrogen gas.
＜N ＞
Taping 2
Nitrogen
Only use nitrogen
Brazing
gas (N )
2
Heavy
L
Intake 3
L
2
L
4
Intake
( service )
Outlet
L
space
1
Indoor unit
L
h
Indoor unit
L2
L (riser)
Indoor unit
h1
h3
Indoor unit
h2
L2
L3
L (riser)
Indoor unit
h1
h3
Indoor unit
h2
L2
L3
La
L (riser)
Indoor unit
h2
Indoor unit
h3
h6
h5
Indoor unit
h4
L2
L4
L3
Lb
L (riser)
Primary side Secondary side
0.5MPa
Hand
Relief valve
gas