Midea SUPER INVERTER MULTI MTBI-07HWFN1-Q User manual

1
Light Commercial
SUPER INVERTER SERIES
MULTI TYPE
Service Manual

Models
Cassette MCA3I(U)-07/09/12/18HRF(D)N1-Q
MSP Duct MTBI(U)-07/09/12/18HWF(D)N1-Q
DM16-01.01.11-02en
Библиотека СОК 

Service manual DM16-01.01.11-02en
2 Multi DC inverter R410A. Light Commercial Indoor unit
CONTENTS
1. GENERAL INFORMATION OF INDOOR UNITS.............................................3
2. FEATURES ......................................................................................................4
3. SPECIFICATION............................................................................................10
4. DIMENSIONS.................................................................................................14
5. SERVICE SPACE (UNIT: MM).......................................................................16
6. WIRING DIAGRAM........................................................................................18
7. STATIC PRESSURE (DUCT).........................................................................20
8. OPERATION TEMPERATURE RANGE ........................................................22
9. ELECTRONIC FUNCTION ............................................................................23
※The specifications, designs, and information in this book are subject to change without notice for
product improvement.

DM16-01.01.11-02en Service manual
Multi DC inverter R410A. Light Commercial Indoor unit 3
1. General information of Indoor Units
Four-way cassette (compact) A5 Duct
Model name Dimension (mm) Net/Gross weight (kg)
MTBI-07HWFN1-Q 700x635x210 19.5/24.5
MTBI-09HWFN1-Q 700x635x210 19.5/24.5
MTBU-12HWFN1-Q 700x635x210 18/22.8
MTBI-18HWDN1-Q 920x635x210 23/29
MCA3I-07HRFN1-Q 570x570x260 14.5/17.3
MCA3I-09HRFN1-Q 570x570x260 14.5/17.3
MCA3U-12HRFN1-Q 570x570x260 16/19
MCA3I-18HRDN1-Q 570x570x260 18/21

Service manual DM16-01.01.11-02en
4 Multi DC inverter R410A. Light Commercial Indoor unit
2. Features
2.1 Four-way cassette type(compact)
⑴New panel
360°surrounding air outlet design, affords comfortable feeling
⑵ Compact design
The body size is 570×260×570mm, it’s just smaller than the ceiling board, so it’s very easy for
installation and will not damage the decoration. The panel size is 647×50×647mm.
The hooks are designed in the four corners of the body, which can save installation space.
⑶ Electric control box built-in design
The E-box is simply and safely built inside the indoor unit. It’s convenient for installation and
maintenance. Can check the control part easily, you only need to open the air return grille.

DM16-01.01.11-02en Service manual
Multi DC inverter R410A. Light Commercial Indoor unit 5
⑷ Fresh air intake function:
Fresh air fulfills air quality more healthy and comfortable.
⑸ Air passage function
Reserves the space for air outlet from the side of indoor unit; It’s availed to connect air duct
from the two sides to the nearby small rooms.
Dimension:Φ75mm
Fresh
A
i
r

Service manual DM16-01.01.11-02en
6 Multi DC inverter R410A. Light Commercial Indoor unit
2.2 MSP Duct
(1) Easy Installation: Two air inlet styles (Bottom side or Rear side)
Air inlet from rear is standard for all capacity; air inlet from bottom is optional.
The size of air inlet frame from rear and bottom is same, it’s very easy to move the cover from bottom to
rear side, or from rear to the bottom, in order to matching the installation condition.
(2) Fresh air intake function
Install one duct from the reserved fresh-air intake to outdoor.
Continually inhale the fresh air to improve the quality of the indoor air, fulfills air quality more healthy and
comfortable.
(3) Easy maintenance
Clean the filter (Optional, standard product without filter)
It is easy to draw out the filter from the indoor unit for cleaning, even the filter is installed in rear side or
bottom side.
Air intake from rear (Standard) Air intake from bottom (Optional)

DM16-01.01.11-02en Service manual
Multi DC inverter R410A. Light Commercial Indoor unit 7
Replace the motor or centrifugal fan
Remove the ventilated panel firstly. Remove a half of blower housing and take out the motor with
centrifugal fan. Directly remove two bolts, and then replace the motor or centrifugal fan easily.
(4) Reserved remote on-off and central control ports
Reserved remote on-off ports and central control ports, can connect the cable of an on-off controller or a
central controller to realize remote on-off control function or group control function.
Motor
Blower Housing
Ventilated Panel

Service manual DM16-01.01.11-02en
8 Multi DC inverter R410A. Light Commercial Indoor unit
(5) Built-in drain pump (Optional):
Built-in drain pump can lift the water to 750mm upmost. It’s convenient to install drainage piping under
most space condition.
Remote on-off ports Central control ports
750mm upmost

DM16-01.01.11-02en Service manual
Multi DC inverter R410A. Light Commercial Indoor unit 9
(6) Built-in display board
The standard indoor unit can be controlled by wired controller.
There is a display board with a receiver in the E-box. Move out the display, and fix it in other place, even
in the distance of 10m. The unit will realized remoter control.
The wired controller and the display board can display the error code or production code when the chips
detect some failure.
Display
Wired Controller (Standard) Remote Controller (Optional)

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10 Multi DC inverter R410A. Light Commercial Indoor unit
3. Specification
Cassette type
Model MCA3I-07HRFN1-Q MCA3I-09HRFN1-Q
Decorativуpanel T-MBQ-03D1 T-MBQ-03D1
Power supply V-ph-Hz 220-240-1-50 220-240-1-50
Cooling
Capacity kW 2,05 2,64
Input W 40 40
Rated current A 0,18 0,18
Heating
Capacity kW 2,34 2,93
Input W 40 40
Rated current A 0,18 0,18
Indoor fan
motor
Model
WZDK46-38G WZDK46-38G
Qty 1 1
Input w
46(Output) 46(Output)
Capacitor uF ---- ----
Speed(hi/mi/lo) r/min 730/620/560 730/620/560
Indoor coil
a.Number of rows 1 1
b.Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37
c.Fin spacing mm 1,3 1,3
d.Fin type (code) Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm Φ7,inner grooved tube Φ7,inner grooved tube
f.Coil length x height x width mm 1380x210x13.37 1380x210x13.37
g.Number of circuits 2 2
Indoor air flow m3/h 580/500/450 580/500/450
Indoor sound pressure level dB(A) 42/38/35 42/38/35
Indoor sound power level dB(A) 53 53
Indoor unit
Dimension (W x Dx
H)(body) mm 570x570x260 570x570x260
Packing (W x Dx
H)(body) mm 655x655x290 655x655x290
Dimension (W x Dx
H)(panel) mm 647x647x50 647x647x50
Packing (W x Dx
H)(panel) mm 715x715x123 715x715x123
Net/Gross weight(body) kg 14.5/17.3 14.5/17.3
Net/Gross weight kg 2.5/4.5 2.5/4.5
Design pressure MPa 4.2/1.5 4.2/1.5
Drainage water pipe dia. mm ODΦ25 ODΦ25
Refrigerant
piping Liquid side/ Gas side mm Φ6.35/Φ9.52(1/4"/3/8") Φ6.35/Φ9.52(1/4"/3/8")
Controller RG36C/BG(C)E RG36C/BG(C)E
Room
temperature
Cooling℃ 17-32 17-32
Heating℃ 0-30 0-30
Operation temperature ℃ 17-30 17-30