MAXA MI Series User manual

AIR CONDITIONING
TECHNICAL MANUAL
Serie/Series/Serie/Série/ Serie Emissione/Issue/misión
Émission/ Ausgabe
MI26A MI35A MI53A 08.18
Catalogo/Catalogue/Catálogo/Brochure/ Katalog Sostituisce/Supersedes/Remplaza
Remplace/ Ersetzt
MTE01111F0520-00 -
HYDRONIC HIGH WALL
D18

Hydronic Highwall
Contents
1. Introduction ......................................................................... 2
2. Nomenclature .............................................................. 2
3. Product Schedule ....................................................... 3
4. External Appearance .................................................. 3
5. Features....................................................................... 4
6. Specifications ............................................................. 5
7. Dimension ................................................................... 7
8. Service Spaces ........................................................... 7
9. Wiring Diagrams ......................................................... 8
10. Capacity Tables ........................................................ 9
11. Sound Levels .......................................................... 13
12. Exploded View ........................................................ 14
13. Installation ............................................................... 16
14. Controller ................................................................ 29

Hydronic Highwall
2 Introduction
1. Introduction
Fan coil unit is a kind of compound device which assemble fan and heat-exchang coil together. Fan coil with
fresh air supply system is a main type of center air-conditioner system, so it is an important component ofAC
devices. Fan coil unit has concealed type and exposed type. A cooling (heating) supply system usually
consists of fan coil terminals and chilled water system (heated water system).
Maxa fan coil is designed and manufactured on the base of advanced technology, and utilize qualified
galvanized iron as material. Due to its supper-thin design, it has such advantages: beautiful outlook, space
saving, easy installation, etc. And the most obvious advantage is that it can decrease the outlet air Temp-
difference as low as possible to make room more comfortable, as well as don’t decrease cooling capacity
output. For the large air flow volume design, it can increase room ventilation frequency, supply more flesh air,
and balance room temperature distribution. Benefiting from adoption of advanced material and technology, it
can effectively decrease the running noise and keep running smoothly. With the advantages above, it can be
widely applied in market, hospital, office building, hotel, airport, etc.
2. Nomenclature
M I – 26 A
Cooling capacity (2,6 kW)
Chilled Water Fan Coil Unit
Maxa

Hydronic Highwall
Product Schedule 3
3. Product Schedule
Model Type Air volume
(CFM) Power supply
MI35A
Wall mounted
250
220~240V-1Ph-50HzMI35A 400
MI53A 500
4. External Appearance

Hydronic Highwall
4Features
5. Features
New panel supplies more choice for customs.
Multi-connection outlet pipe method: left/right/rear, more flexible for installation.
Wind direction adjustment can be in horizontal and vertical way for auto swing louver
Built-in 3-way electromagnetic valve.
Easy maintenance has been realized as the front panel can be removed for easy access.
Remote controller with LCD display is standard, wired controller and central controller are optional.
Four-speed motor with super high speed reserved for more choice.
Right piping
Left piping
Right back piping
Left back piping
Horizontal air deflector
Vertical air deflector

Hydronic Highwall
Specifications 5
6. Specifications
Model
MI26A MI35A
Air flow
H/M/L m3/h 425/360/320 680/580/510
H/M/L CFM 250/210/190 400/340/300
Cooling
Capacity H/M/L kW 2.63/2.41/2.16 3.28/2.83/2.41
Water flow rate H l/h 452 564
Water pressure drop H kPa 29.4 43.5
Heating
Capacity H/M/L kW 3.36/3.1/2.79 4.37/3.73/3.17
Water pressure drop H kPa 27.3 40.8
Power supply
V/ph/Hz
220-240/1/50
Power input
H W 24 40
Sound pressure
level H/M/L dB(A) 30/24/20 37/31/26
Fan motor
Type Low noise 4-speed fan motor
Quantity 1
Fan
Type Cross-flow fan
Quantity 1
Coil
Row 2
Max. Working pressure Mpa 1.6
Diameter mm Φ7
Body
Dimensions W×H×D mm 915×230×290
Net weight kg 13 13.3
Packing W×H×D mm 1020×315×390
Gross weight kg 16.3 16.7
Pipe
connection
Water inlet/outlet pipe Inch G3/4"
Drain pipe mm ODΦ20
Controller
R51/E (standard)
Note:
1. H: high speed; M: medium speed; L: low speed
2. Cooling Conditions: entering water 7°C, temperature rise 5°C, entering air temperature 27°C DB,19°CWB.
Heating Conditions: entering water 50°C, enter air temperature 20°C, the same water flow as the cooling conditions.
3. Noise is tested in semi-anechoic test room.

Hydronic Highwall
6Specifications
Specifications
Model
MI42A
Air flow
H/M/L m3/h 850/720/640
H/M/L CFM 500/420/380
Cooling
Capacity H/M/L kW 4.25/3.85/3.32
Water flow rate H l/h 731
Water pressure drop H kPa 31.8
Heatin
g Capacity H/M/L kW 5.81/5.17/4.43
Water pressure drop H kPa 30.2
Power supply
V/ph/Hz
220-240/1/50
Power input
H W 50
Sound pressure level
H/M/L dB(A) 39/33/28
Fan motor
Type Low noise 4-speed fan motor
Quantity 1
Fan
Type Cross-flow fan
Quantity 1
Coil
Row 2
Max. Working pressure Mpa 1.6
Diameter mm Φ7
Body
Dimensions W×H×D mm 1072×230×315
Net weight kg 15.8
Packing W×H×D mm 1180×315×415
Gross weight kg 19.4
Pipe
connection
Water inlet/outlet pipe Inch G3/4"
Drain pipe mm ODΦ20
Controller
R51/E (standard)
Note:
1. H: high speed; M: medium speed; L: low speed
2. Cooling Conditions: entering water 7°C, temperature rise 5°C, entering air temperature 27°C DB,19°CWB.
Heating Conditions: entering water 50°C, enter air temperature 20°C, the same water flow as the cooling conditions.
3. Noise is tested in semi-anechoic test room.

Hydronic Highwall
Dimensioni
7
7. Dimensioni
MI26A MI35A
MI53A

Hydronic Highwall
8Wiring Diagrams
8. Wiring Diagrams

Hydronic Highwall
Capacity Tables 9
10. Capacity Tables
Cooling Capacity:
Remark: EWT: Enter Water Temp. (℃); Δt: Temperature Difference (℃)
DB: Dry Bulb Temp. (℃); WB: Wet Bulb Temp. (℃);
TC:Total Cooling Capacity (kW); SC: Sensible Cooling Capacity (kW);
WF:Water Flow (m3/h); WPD: Water Pressure Drop (kPa)
MI26A
EWT Δt
Air inlet condition
DB:21WB:15
DB:26.7 WB:19.4
DB:27 WB:19
DB:29WB:21
DB:33 WB:25
TC
SC
WF
WPD
TC
SC
WF
WPD
TC
SC
WF
WPD
TC
SC
WF
WPD
TC
SC
WF
WPD
5
3
2.17
1.58
0.62
55.8
3.35
2.02
0.96
132.6
3.28
2.11
0.94
127.2
3.67
1.92
1.05
158.7
4.93
2.39
1.41
287.4
4
2.05
1.49
0.44
27.8
3.22
1.96
0.69
68.9
3.17
2.05
0.68
66.7
3.52
1.86
0.76
82.4
4.78
2.32
1.03
151.9
5
1.89
1.43
0.33
15.2
3.08
1.89
0.53
40.4
3.02
1.98
0.52
38.8
3.39
2.93
0.58
48.7
4.63
2.28
0.80
91.1
6
1.73
1.37
0.25
8.8
2.94
1.84
0.42
25.6
2.89
1.91
0.41
24.6
3.24
1.72
0.46
30.9
4.52
2.20
0.65
60.2
7
1.55
1.28
0.19
5.2
2.80
1.75
0.34
17.0
2.74
1.85
0.34
16.2
3.10
1.65
0.38
20.8
4.36
2.13
0.54
41.3
6
3
1.97
1.49
0.56
45.6
3.16
1.94
0.91
118.0
3.09
2.02
0.89
112.7
3.48
1.84
1.00
143.0
4.74
2.32
1.36
265.7
4
1.83
1.42
0.39
22.1
3.04
1.87
0.65
61.2
2.96
1.95
0.64
58.3
3.34
1.78
0.72
74.1
4.59
2.24
0.99
140.0
5
1.69
1.35
0.29
12.1
2.89
1.80
0.50
35.5
2.83
1.90
0.49
34.1
3.21
1.71
0.55
43.7
4.44
2.16
0.76
83.8
6
1.51
1.29
0.22
6.8
2.75
1.75
0.39
22.3
2.69
1.83
0.39
21.3
3.05
1.63
0.44
27.4
4.33
2.09
0.62
55.2
7
1.33
1.20
0.16
3.8
2.61
1.67
0.32
14.7
2.54
1.78
0.31
14.0
2.91
1.56
0.36
18.4
4.17
2.05
0.51
37.8
7
3
1.76
1.40
0.50
36.5
2.95
1.84
0.85
102.9
2.89
1.94
0.83
98.5
3.28
1.75
0.94
126.6
4.52
2.20
1.29
240.8
4
1.61
1.34
0.35
17.3
2.83
1.78
0.61
53.2
2.76
1.87
0.59
50.4
3.15
1.69
0.68
65.7
4.40
2.16
0.95
128.7
5
1.46
1.28
0.25
9.0
2.69
1.72
0.46
30.7
2.63
1.81
0.45
29.4
2.99
1.62
0.52
38.1
4.25
2.09
0.73
76.8
6
1.28
1.21
0.18
4.9
2.55
1.67
0.36
19.1
2.50
1.75
0.36
18.5
2.86
1.55
0.41
24.1
4.14
2.01
0.59
50.5
7
1.11
1.11
0.14
2.7
2.41
1.59
0.30
12.6
2.33
1.69
0.29
11.8
2.71
1.48
0.33
15.9
3.98
1.94
0.49
34.4
8
3
1.54
1.32
0.44
28.0
2.75
1.76
0.79
89.4
2.69
1.85
0.77
85.2
3.08
1.65
0.88
111.8
4.33
2.13
1.24
221.0
4
1.39
1.28
0.30
12.8
2.63
1.70
0.57
45.9
2.55
1.81
0.55
43.2
2.93
1.60
0.63
57.0
4.17
2.05
0.90
115.7
5
1.23
1.20
0.21
6.4
2.50
1.63
0.43
26.5
2.42
1.73
0.42
24.9
2.80
1.54
0.48
33.4
4.06
1.97
0.70
70.1
6
1.10
1.10
0.16
3.6
2.33
1.58
0.33
16.1
2.29
1.67
0.33
15.5
2.66
1.46
0.38
21.0
3.91
1.94
0.56
45.1
7
0.96
0.96
0.12
2.0
2.20
1.51
0.27
10.5
2.13
1.61
0.26
9.8
2.49
1.40
0.31
13.5
3.77
1.86
0.46
30.9
9
3
1.32
1.25
0.38
20.5
2.56
1.69
0.73
77.2
2.49
1.77
0.71
73.0
2.87
1.57
0.82
97.4
4.14
2.05
1.19
202.0
4
1.20
1.20
0.26
9.5
2.41
1.62
0.52
38.7
2.34
1.72
0.50
36.4
2.72
1.51
0.59
49.3
3.98
1.97
0.86
105.5
5
1.10
1.07
0.19
5.2
2.28
1.56
0.39
22.2
2.21
1.66
0.38
20.8
2.59
1.45
0.45
28.6
3.87
1.90
0.67
63.7
6
0.97
0.97
0.14
2.8
2.13
1.50
0.31
13.4
2.06
1.61
0.29
12.5
2.46
1.38
0.35
17.8
3.71
1.86
0.53
40.6
7
0.79
0.79
0.10
1.4
1.97
1.43
0.24
8.4
1.91
1.53
0.23
7.9
2.28
1.32
0.28
11.3
3.58
1.79
0.44
27.8
10
3
1.16
1.16
0.33
15.9
2.35
1.60
0.67
64.9
2.25
1.70
0.65
59.8
2.67
1.49
0.77
84.3
3.95
1.94
1.13
183.9
4
1.07
1.07
0.23
7.6
2.20
1.54
0.47
32.2
2.13
1.65
0.46
30.0
2.52
1.43
0.54
42.0
3.78
1.90
0.81
95.1
5
0.95
0.95
0.16
3.9
2.06
1.49
0.35
18.0
1.97
1.59
0.34
16.5
2.38
1.37
0.41
24.1
3.67
1.83
0.63
57.1
6
0.82
0.82
0.12
2.0
1.92
1.42
0.27
10.8
1.83
1.53
0.26
9.9
2.23
1.30
0.32
14.6
3.51
1.78
0.50
36.3
7
0.52
0.52
0.06
0.6
1.75
1.36
0.21
6.6
1.67
1.48
0.20
6.0
2.08
1.23
0.26
9.4
3.35
1.71
0.41
24.4
11
3
1.02
1.02
0.29
12.4
2.12
1.53
0.61
52.9
2.04
1.62
0.59
49.2
2.46
1.41
0.70
71.2
3.72
1.86
1.07
163.7
4
0.94
0.94
0.20
5.8
1.98
1.47
0.43
26.2
1.91
1.56
0.41
24.1
2.32
1.35
0.50
35.7
3.57
1.81
0.77
84.7
5
0.81
0.81
0.14
2.8
1.83
1.42
0.32
14.3
1.75
1.53
0.30
13.0
2.17
1.29
0.37
20.0
3.46
1.75
0.59
50.8
6
0.65
0.65
0.09
1.2
1.67
1.36
0.24
8.2
1.61
1.46
0.23
7.6
2.01
1.22
0.29
11.9
3.30
1.70
0.47
32.1
7
0.44
0.44
0.05
0.4
1.49
1.31
0.18
4.8
1.43
1.43
0.18
4.5
1.85
1.15
0.23
7.4
3.15
1.63
0.39
21.5
12
3
0.90
0.90
0.26
9.6
1.89
1.45
0.54
42.3
1.80
1.57
0.52
38.4
2.23
1.33
0.64
58.8
3.51
1.79
1.01
145.8
4
0.80
0.80
0.17
4.2
1.75
1.40
0.38
20.4
1.67
1.51
0.36
18.4
2.10
1.27
0.45
29.3
3.37
1.73
0.72
75.3
5
0.69
0.69
0.12
2.0
1.60
1.35
0.28
10.9
1.52
1.46
0.26
9.8
1.95
1.21
0.33
16.1
3.24
1.67
0.56
44.5
6
0.41
0.41
0.06
0.5
1.42
1.31
0.20
6.0
1.41
1.38
0.20
5.9
1.78
1.15
0.26
9.4
3.08
1.62
0.44
28.0
7
0.34
0.34
0.04
0.3
1.26
1.26
0.15
3.4
1.30
1.30
0.16
3.7
1.62
1.08
0.20
5.7
2.93
1.56
0.36
18.6
13
3
0.78
0.78
0.22
7.1
1.65
1.39
0.47
32.3
1.56
1.51
0.45
28.7
2.01
1.26
0.58
47.8
3.29
1.72
0.94
127.8
4
0.66
0.66
0.14
2.9
1.51
1.34
0.33
15.2
1.46
1.43
0.31
14.2
1.87
1.20
0.40
23.2
3.15
1.65
0.68
65.9
5
0.48
0.48
0.08
1.0
1.35
1.32
0.23
7.8
1.37
1.37
0.23
7.9
1.72
1.14
0.30
12.6
3.01
1.59
0.52
38.5
6
0.32
0.32
0.05
0.3
1.23
1.23
0.18
4.5
1.27
1.27
0.18
4.8
1.55
1.08
0.22
7.1
2.85
1.55
0.41
24.0
7
0.24
0.24
0.03
0.1
1.12
1.12
0.14
2.7
1.17
1.17
0.14
3.0
1.36
1.02
0.17
4.0
2.71
1.48
0.33
15.9