INVENTOR LCAC User manual

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• SERVICE MANUAL
english
LCAC
AIR CONDITIONING SYSTEMS

Contents
Contents i
Part 1 General Information.......................................................1
Part 2 Indoor Units................................................................6
Part 3 Outdoor Units...........................................................97
Part 4 Installation..............................................................110
Part 5 Electrical Control System.....................................144
※The specifications, designs, and information in this book are subject to change without notice for
product improvement.

ii General Information

General Information
General Information 1
Part 1
General Information
1. Model Lists ............................................................................................2
2. External Appearance............................................................................3
2.1 Indoor Units............................................................................................................... 3
2.2 Outdoor Units............................................................................................................ 4

Model Lis ts
2 General Information
1. Model Lists
1.1 Indoor Units
R410A (capacity multiplied by 1000Btu/h)
Type F unction 12 18 24 36 42 50 60
Super sl im ca ss ette Coo ling and he ating ● ● ● ● ●
Duct Coo ling and heat ing ● ● ● ● ● ● ●
Cei ling-oor Coo ling and he ating ● ● ● ● ● ●
Four-way cas s ette(compact) Coo ling and he ating ●●
Con sole Coo ling and he ating ●
Floor-standing Coo ling and heat ing ●
Floor-standing Coo ling and he ating ●
1.2 Outdoor Units
Univer sal Outd oor unit Model Compres sor type Compres sor Br and
U4MRS-1 2 Ro tary G MC C
U4MR S -18 Ro tary G MC C
U4MR S -36 Ro tary G MC C
U4MR S -24 Ro tary G MC C
U4MR T-42 Ro tary G MC C
U4MR T-50 Ro tary G MC C
U4MR T-60 Ro tary G MC C
●
●

External Ap pearance
General Information 3
2. External Appearance
2.1 Indoor Units
Super slim cassette Duct
Compact Four-way cassette
Console
Floor-standing
Floor-standing
Ceiling-Floor

External Appearance
4 General Information
2.2 Outdoor Units
Single fan outdoor unit Double fan outdoor unit

Indoor Units
6 Indoor Units
Part 2
Indoor Units
Super Slim Cassette Type ...................................................7
Duct Type.............................................................................22
Ceiling & Floor Type...........................................................39
Four-way Cassette Type (Compact)..................................55
Console Type.......................................................................64
Floor-standing Type...........................................................75
Floor-standing Type ..........................................................86

Super Slim Cassette Type
Indoor Units 7
Super Slim Cassette Type
1. Features ..............................................................................8
2. Dimensions......................................................................11
3. Service Space..................................................................12
4. Air Velocity Distributions (Reference Data) .................13
5. Electric Characteristics..................................................16
6. Sound Levels...................................................................17
7. Accessories.....................................................................18
8. The Specification of Power............................................19
9. Field Wiring .....................................................................20
10. Wiring diagram..............................................................21
11. Wiring diagram..............................................................52

Features
8 Indoor Units
1. Features
1.1 Overview
Compact design, super slim body size, less space requiring in installation
Each louver can be separately controlled, more comfort air blowing is possible.
Auto-lifting panel design, more convenient to clean and maintain the filter. (optional)
1.2 Fresh air intake function
Fresh air fulfills air quality more healthy and comfortable.
Ventilation motor is optional to increase the effect of fresh air.
1.3 Optional ionizer generator
Ionizer generator is optional to get refreshing air to your room.
Ionizer can be switched on or off by remote controller.
When pressing the Clean Air button on the remote controller, Ionizer will work and the indicator light on
display board will shine.
1.4 External air duct design
Reserve external air duct, more flexible for the air supply.
I
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Ve en nt ti il la at ti io on n m mo ot to or r
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co on nn ne ec ct to or r

Features
Indoor Units 9
1.5
Built-in draining pump
Due to the improvement of structure, more convenient to repair or replace the draining pump.
7.
8.
9.
Built-in draining pump to make sure condensed water drain out reliably.
1.6 Terminals for alarm lamp and long-distance on-off controller connection are
standard
Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more human
control.
Draining Pump

Features
10 Indoor Units
1.7 Twins Combination(18k-30k)
The units can be installed as Twin systems: one outdoor unit can connect with two indoor units. The
indoor units can be combined in any of the different available ratings.
Alarm lamp
Long-distance on-off controller

Dimensions
Indoor Units 11
2. Dimensions
840
840
950
950
C
Test mouth & Test cover
Drain hole
32
Wiring co nnection port
680
780
780
680
136
126
91
196
132
A
A
B
AA
B
A
A
B
A
B
Service ho le for
draining pump
Fresh air in take
75
55
80
80
4-install hanger
Gas side
Liquid side
E-parts box
135
90
Pa nel
Bo dy
92929292
DD
92 92
D
D
DD
92
9292
92
92 92 92 92
D
D
Unit: mm
Model A B C D
V4MCI-24
V4MCI-36
V4MCI-42
160 95 245 60
V4MCI-50
V4MCI-60 160 95 287 60

Service Space
12 Indoor Units
3. Service Space
>1000mm
>1000mm
>1000mm
>1000mm

Air Velocity Distributions (Reference Data)
Indoor Units 13
4. Air Velocity Distributions (Reference Data)
24K:
Cooling:
Heating:

Air Velocity Distributions (Reference Data)
14 Indoor Units
36-42K:
Cooling:
Heating:

Air Velocity Distributions (Reference Data)
Indoor Units 15
50-60K：
Cooling:
Heating:

Electric Characteristics
16 Indoor Units
5. Electric Characteristics
Model Indoor Unit Power
Supply
Hz Voltage Min Max MFA
V4MCI-24 50 220-240 198 254 10
V4MCI-36 50 220-240 198 254 10
V4MCI-42 50 220-240 198 254 10
V4MCI-50 50 220-240 198 254 10
V4MCI-60 50 220-240 198 254 10
Notes:
MFA: Max. Fuse Amps. (A)

Sound Levels
Indoor Units 17
6. Sound Levels
1.4m
Microphone
Model Noise Power dB(A) Noise level dB(A)
H M L
62 46 42 39
65 56 52 48
64 52 40 47
65 55 51 48
69 52 49 46
V4MCI-24
V4MCI-36
V4MCI-42
V4MCI-50
V4MCI-60