Refrigerant Piping Work; Restrictions On Unit Installation And Use; So That Strong Wind Will Not Blow Against The Outdoor Heat Exchanger Directly - Mitsubishi Heavy Industries FDE40ZMXVG Technical Manual

200V)
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.
ant
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
Since drain water generated by defrost control may freeze, following measures are required.
unit, will not be generated and not remain.
●
Don't execute drain piping work by using a drain elbow and drain grommets (option parts). [Refer to Drain piping work.]
〇 A place where strong wind will not blow against the outlet air blow of the unit.
●
Recommend setting Defrost Control (SW3-1) and Snow Guard Fan Control (SW3-2). [Refer to Setting SW3-1, SW3-2.]
Do not install the unit in places which exposed to sea breeze (e.g. coastal area)
● Attach heater on a base plate on site, if there is possibility to freeze drain water.
or calcium chloride (e.g. snow melting agent), exposed to ammonia substance (e.g. organic fertilizer).
In case that the product has a corrective drainage system, the drainage paths should have suitable measure against
4) Caution about selection of installation location
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.
(1) If the unit is installed in the area where the snow will accumulate, following measures are required.
Strong wind can cause damage of fan (fan motor), or can cause performance degradation, or can trigger anomalous stop
The bottom plate of unit and intake, outlet may be blocked by snow.
of the unit due to rising of high pressure.
1. Install the unit on the base so
1.Install the outlet air blow side of the that the bottom is higher than
unit to face a wall of building, or snow cover surface.
OD25.4
provide a fence or a windbreak screen.
pe B
Over 500 mm
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 (option parts). [Refer to Drain piping work.]
5) Installation space
●
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. Walls surrounding the unit in the four sides are not acceptable.
● In case that the product has a corrective drainage system, the drainage paths should have suitable measure against There must be a 1-meter or larger space in the above.
● freezing but be sure not to melt the material of drainage paths with heat.
Where a danger of short-circuiting exists, install guide louvers.
●
(2) If the unit can be affected by strong wind, following measures are required.
● Where piling snow can bury the outdoor unit, provide proper snow guards.
Strong wind can cause damage of fan (fan motor), or can cause performance degradation, or can trigger anomalous stop
● A barrier wall placed in front of the exhaust diffuser must not be higher than the unit. of the unit due to rising of high pressure.
1.Install the outlet air blow side of the
unit to face a wall of building, or
Size
provide a fence or a windbreak screen.
L1
L2
rcuit.
L3
L4 ※ 1
L4 ※ 2
※ 1 In case of 200V model
※ 2 In case of 250V, A160V, A200V model. If unit is installed in L4 space with ( )'s condition, secure
Over 500 mm
ess test
space of 250mm in lateral (L4) by unit movement at the time of exchange work of compressor.
ork, you

2. REFRIGERANT PIPING WORK

1) Restrictions on unit installation and use

e of non
●
●
Observe the following restrictions on unit installation and use. Improper installation can result in a compressor failure or performance degradation.
rt of fan.
Restrictions
t bite or
One-way pipe length of refrigerant piping
urst and
Main pipe length
electric
point from to the second branching point
point
to indoor units through the second branching point
branching point to the indoor unit
One-way pipe length difference from the
second branching point to the indoor unit
Total pipe length after the second branching point
Elevation difference between indoor and outdoor
units
Elevation difference between indoor units
● For model 200V, always use φ12.7mm liquid main pipe when the one way piping length exceeds 40m. If φ9.52mm pipes are used in an installation having over 40m piping, they can cause
CAUTION
performance degradation and/or water leaks from an indoor unit. Use φ9.52mm liquid main pipe when the one way piping length is less than 40m.
● Always use φ25.4mm or φ28.58mm gas pipes when the length of the main "L" exceeds 35m.
If the φ22.22mm pipes are used in an installation having over 35m piping, they can cause performance degradation and/or water leaks from an indoor unit.
● Triple type B is not allowed to use in case of 250V.
Note (1) Install the indoor units so that L + L1 becomes the longest one-way pipe.
Keep the pipe length difference between L1 and (La + L2) or (La + L3) within 10m.
Note (2) Connect the unit that is the maximum capacity with L1.
2. Provide a snow hood to 3. Install the unit under eaves
2.Install the outlet air blow side of the outdoor unit on site. 3.The unit should be installed on or providen the roof on site.
the unit in a position perpendicular the stable and level foundation.
Regarding outline of a snow
to the direction of wind. If the foundation is not level,
hood, refer to our technical
tie down the unit with wires.
manual.
Wind direction
Wind direction
2.Install the outlet air blow side of 3.The unit should be installed on
（mm）
Example installation the unit in a position perpendicular the stable and level foundation.
Ⅰ Ⅱ Ⅲ
Intake
to the direction of wind. If the foundation is not level,
L
Open Open 500 2
tie down the unit with wires.
300 5 Open
Wind direction Intake
150 300 150
5 5 5
(
Outlet
250 (5) 250 (5)
250 (5)
Wind direction
Dimensional
Model for outdoor units Single type
restrictions
≦ 40m
φ9.52
200V Liquid Piping
φ12.7
40~70m
L
φ25.4 or φ28.58 35~70m
Gas piping
250V,A160V,A200V ≦ 35m
φ22.22
≦ 40m
φ9.52
200V Liquid Piping
φ12.7 40~70m
−
φ25.4 or φ28.58 35~70m
Gas piping
≦ 35m
250V,A160V,A200V
φ22.22
200V
≦ 5m −
250V,A160V,A200V
200V
≦ 30m
−
250V,A160V,A200V
≦ 27m −
200V
≦ 10m
Twin type
≦ 3m
200V
≦ 10m
Triple type
− ｜L1−L2｜
≦ 3m
250V,A160V,A200V
200V . 250V,A160V,A200V ≦ 10m
W-twin type
200V ≦ 10m −
≦ 15m −
≦ 30m
When the outdoor unit is positioned higher,
H
≦ 15m
When the outdoor unit is positioned lower,
≦ 0.5m −
Size
6) Installation
①
※ 1 In case of 200V model
※ 2 In case of 250V, A160V, A200V model. 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
190
①
●
●
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.
190
7) To run the unit for a cooling operation, when the outdoor temperature
●
●
The protrusion of an anchor bolt on the front side must be kept within 15 mm.
is –5°C or lower.
●
Securely install the unit so that it does not fall over during earthquakes or strong winds, etc.
●
● When the outdoor air temperature is -5°C or lower, provide a snow hood to the outdoor unit on site.
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.) So that strong wind will not blow against the outdoor heat exchanger directly. Regarding outline of a snow hood,
Improper installation can result in a compressor failure, broken piping within the unit and abnormal noise generation. refer to our technical manual.
7) To run the unit for a cooling operation, when the outdoor temperature
is –5°C or lower.
L
3
● When the outdoor air temperature is -5°C or lower, provide a snow hood to the outdoor unit on site.
L
So that strong wind will not blow against the outdoor heat exchanger directly. Regarding outline of a snow hood,
4
refer to our technical manual.
service )
space L
1
Marks appearting in the drawing
≧ 3m
< 3m
Twin type Triple type A Triple type B
L＋L1 200V: L＋L1, L＋L2, L＋L3 200V: L＋L1
(1)
L＋L2 250V: L＋L1, L＋La＋L2, L＋La＋L3 250V: Prohibitation of the use
(2) (type B)
200V: L 200V: L
L
250V: L (type B) 250V: Prohibitation of the use
− La
−
Prohibitation of the use
La (type B)
L1, L2, L3 L1 (1)
L1, L2
L1, La＋L2, La＋L3
(2) (type B) Prohibitation of the use
−
−
La＋L2, La＋L3
(1)
−
−
｜L1−L2｜, ｜L2−L3｜, ｜L3−L1｜
−
L1−(La＋L2), L1−(La＋L3)
(1)
｜L1−(La＋L2)｜,｜L1−(La＋L3)｜,｜L2−L3｜
Prohibitation of the use
(2) (type B)
− − ｜(L1＋La)−(L3＋Lb)｜, ｜(L1＋La)−(L4＋Lb)｜
｜(L2＋La)−(L3＋Lb)｜,｜ (L2＋La)−(L4＋Lb)｜
− ｜L2−L3｜
−
− − −
H H H
h h1, h2, h3 h1, h2, h3
（mm）
Example installation
Ⅰ Ⅱ Ⅲ
Intake
L
Open 500
L1 Open 2
5 Open
L2 300
Intake
150 300 150
L3
L4 ※ 1
5 5 5
② Notabilia for installation
Outlet
L4 ※ 2
250 (5) 250 (5) 250 (5)
Intake
Fasten with bolts
(M10-12)
Outlet
580 200 Use a thicker block to anchor deeper.
② Notabilia for installation
Use a long block to extend the width.
Intake
Fasten with bolts
(M10-12)
Outlet
580 200
Use a thicker block to anchor deeper.
Use a long block to extend the width.
< Single type >
H
W-twin type
Outdoor unit
L＋La＋L1, L＋La＋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
−
H
L1
La＋L 1, La＋L2
Lb＋L3, Lb＋L4
−
Outdoor unit
< Triple type >
−
Type A
Indoor unit
(The unit of which elevation difference from the outdoor unit is the largest.)
｜L1−L2｜, ｜L3−L4｜
Indoor unit
｜L1−L2｜, ｜L3−L4｜
L1＋L2, L3＋L4
H
L1
H
h1, h2, h3, h4, h5, h6
Outdoor unit
< Triple type >
Type B
Indoor unit
(The unit of which elevation difference from the outdoor unit is the largest.)
L
3
L
4
( service
)
space L
1
Indoor unit
L
h
Indoor unit
L2
L (riser)
h1
h3
Indoor unit
h2
L2
L3
L (riser)