Lennox LIUH018021T431E-1 User manual

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Service Manual
LIUH018021T431E-1
LIUH024021T431E-1
LIUH036021T431E-1
LIUH048021T431E-1
LIUH060021T431E-1
LIFHC018021T431E-1
LIFHC024021T431E-1
LIFHC036021T431E-1
LIFHC048021T431E-1
LIFHC060021T431E-1
LIFHC012021T431E-1
LICH4018021T431E
LICH4024021T431E-1
LICH4036021T431E-1
LICH4048021T431E-1
LICH4060021T431E-1
LICH4012021T431E-1
LIHP012000T431E
LIHP018000T431E
LIHP024000T431E
LIHP036000T431E
LIHP036000M431E
LIHP048000T431E
LIHP048000M431E
LIHP060000M431E

Contents
Part 1 General Information .................................................................................................... 1
Part 2 Indoor Units ................................................................................................................. 4
Part 3 Outdoor Units ............................................................................................................ 63
Part 4 Installation ................................................................................................................. 76
Part 5 Electrical Control System ....................................................................................... 106
※The specifications, designs, and information in this book are subject to change without notice for
product improvement.

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............................................................................................................ 3

Indoor Units
Indoor Units 2
1. Model Lists
1.1 Indoor Units
R410A (capacity multiplied by 1000Btu/h)
Type Function 12 18 24 36 48 55
Super slim cassette Cooling and heating ●●●●
A6 Duct Cooling and heating ●●●●●●
Ceiling-floor Cooling and heating ●●●●●
Four-way
cassette(compact) Cooling and heating ●●
1.2 Outdoor Units
Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units
LIHP012000T431E Rotary GMCC LIFHC012021T431E-1
LICH4012021T431E-1
LIHP018000T431E Rotary GMCC LIUH018021T431E LIFHC018021T431E-1
LICH4018021T431E
LIHP024000T431E Rotary GMCC LIUH024021T431E-1 LIFHC024021T431E-1
LICH4024021T431E-1
LIHP036000T431E Rotary GMCC LIUH036021T431E-1
LIFHC036021T431E-1
LICH4036021T431E-1
LIHP036000M431E Rotary GMCC
LIHP048000T431E Rotary GMCC LIUH048021T431E-1
LIFHC048021T431E-1
LICH4048021T431E-1
LIHP048000M431E Rotary GMCC
LIHP060000M431E Rotary GMCC LIUH060021T431E-1 LIFHC060021T431E-1
LICH4060021T431E-1

Indoor Units
Indoor Units 3
2. External Appearance
2.1 Indoor Units
Super slim cassette
Duct
Ceiling-Floor Compact Four-way cassette
2.2 Outdoor Units
Single fan outdoor unit Double fan outdoor unit

Indoor Units
Indoor Units 4
Part 2
Indoor Units
Super Slim Cassette Type ....................................................5
A6 Duct Type ......................................................................20
Ceiling & Floor Type ..........................................................38
Four-way Cassette Type (Compact) .................................53

Super Slim Cassette Type
Indoor Units 5
Super Slim Cassette Type
1. Features ...........................................................................6
2. Dimensions ......................................................................9
3. Service Space ................................................................10
4. Wiring Diagrams ............................................................11
5. Air Velocity Distributions (Reference Data).................12
6. Electric Characteristics.................................................15
7. Sound Levels .................................................................16
8. Accessories....................................................................17
9. The Specification of Power ...........................................18
10. Field Wiring ..................................................................19

Features
Indoor Units 6
1. Features
1.1Overview
➢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.
1.3Optional 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.
Ionizer generator
connector
Ventilation motor
connector

Features
Indoor Units 7
1.5 Built-in draining pump
➢Due to the improvement of structure, more convenient to repair or replace the draining pump.
➢Built-in draining pump to make sure condensed water drain out reliably.
1.6Terminals 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
Indoor Units 8
1.7Twins 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 9
2. Dimensions
840
840
950
950
C
Test mouth & Test cover
Drain hole
32
Wiring connection port
680
780
780
680
136
126
91
196
132
A
A
B
AA
B
A
A
B
A
B
Service hole for
draining pump
Fresh air intake
75
55
80
80
4-install hanger
Gas side
Liquid side
E-parts box
135
90
Panel
Body
92929292
DD
92 92
D
D
DD
92
9292
92
92 92 92 92
D
D
Unit: mm
Model(kBtu/h)
A
B
C
D
24~36
160
95
245
60
48~60
160
95
287
60

Service Space
Indoor Units 10
3. Service Space
>1000mm
>1000mm
>1000mm
>1000mm
Chart 3
A
Drain side Tubing side
(Unit: mm)
680(Hook-location)
780(Hook-location)
840(Body)
84 0(Body)
880(Ceiling hole)
880(Ceiling hole)
950(Panel)
95 0(Pane l)
Necessary room
>2500mm
out let intle t outlet
ground
Chart 1
Chart 4
A
No te:
Nut
Body
Ceiling 880mm
Hook
B
Panel
Chart 2
Body
Chart 5
Central hole
Bolt M6X12 Inst allation paperboard
180 00-24000Btu/h(R 22) Series A 26 0mm
36000-48000Btu/h(R 22) Series A 330mm
≥
≥
No te:
180 00- 24000B tu/h(R 22) Seri es B= 240mm
360 00- 48000Btu /h(R 22) Series B= 310mm

Wiring Diagrams
Indoor Units 11
4. Wiring Diagrams

Air Velocity Distributions (Reference Data)
Indoor Units 12
5. Air Velocity Distributions (Reference Data)
24K:
Cooling:
Heating:

Air Velocity Distributions (Reference Data)
Indoor Units 13
36K:
Cooling:
Heating:

Air Velocity Distributions (Reference Data)
Indoor Units 14
48-60K：
Cooling:
Heating:

Electric Characteristics
Indoor Units 15
6. Electric Characteristics
Model
Indoor Unit
Power Supply
Hz
Voltage
Min
Max
MFA
LICH4024021T431E-1
50
220-240V
198V
254V
/
LICH4036021T431E-1
50
220-240V
198V
254V
/
LICH4048021T431E-1
50
220-240V
198V
254V
/
LICH4060021T431E-1
50
220-240V
198V
254V
/
Notes:
MFA: Max. Fuse Amps. (A)

Sound Levels
Indoor Units 16
7. Sound Levels
1.4m
Microphone
Model
Noise Power dB(A)
Noise level dB(A)
H
M
L
LICH4024021T431E-1
62
46
42
39
LICH4036021T431E-1
65
56
52
48
LICH4048021T431E-1
65
55
51
48
LICH4060021T431E-1
69
52
49
46

Accessories
Indoor Units 17
8. Accessories
Name
Shape
Quantity
Installation Fittings
Installation paper board
1
Tubing & Fittings
Soundproof / insulation sheath
1
Drainpipe Fittings
Out-let pipe sheath
1
Out-let pipe clasp
1
Drain joint
1
Seal ring
1
Remote controller & Its
Frame(The product you
have might not be
provided the following
accessories)
Remote controller & Its Frame
1
Remote controller holder
1
Mounting screw(ST2.9×10-C-H)
2
Remote controller manual
1
Alkaline dry batteries (AM4)
2
Others
Owner's manual
1
Installation manual
1
Installation accessory
(The product you have
might not be provided the
following accessories
Expansible hook
4
Installation hook
4
Orifice
1

The Specification of Power
Indoor Units 18
9. The Specification of Power
Model(Btu/h)
24000
36000
36000
POWER
Phase
1-phase
1-phase
3-phase
Frequency and
Voltage
220-240V, 50Hz
220-240V, 50Hz
380-415V, 50Hz
POWER WIRING
(mm2)
3×2.5
3×4.0
5×2.5
CIRCUIT BREAKER/Fuse (A)
30/20
40/30
30/20
Indoor/Outdoor Connecting Wiring
(Weak Electric Signal) (mm2)
2×0.2
2×0.2
2×0.2
Indoor/Outdoor Connecting Wiring
(Strong Electric Signal) (mm2)
3×1.0(3x2.5 with
auxiliary electric
heater)
3×1.0(3x2.5
with auxiliary
electric heater)
3×1.0(3x2.5
with auxiliary
electric heater)
Model(Btu/h)
48000
60000
POWER
Phase
1-phase
3-phase
Frequency and Voltage
220-240V, 50Hz
380-415V, 50Hz
Power Wiring (mm2)
3×4.0
5×2.5
Circuit Breaker/Fuse(A)
40/35
30/25
Indoor/Outdoor Connecting Wiring(Weak Electric Signal) (mm2)
2×0.2
2×0.2
Indoor/Outdoor Connecting Wiring(Strong Electric Signal) (mm2)
3×1.0(3x2.5 with
auxiliary electric
heater)
3×1.0(3x2.5 with
auxiliary electric
heater)