Lennox VRF VEHW007C432P Installation instructions

VEHW007C432P
VEHW009C432P
VEHW012C432P
VEHW018C432P
VEHW024C432P
Thank you for selecting
INSTALLATION/OPERATION
INSTRUCTIONS
VEHigh Wall Type
VRF SYSTEMS
INDOOR UNITS
©2016 Lennox Industries Inc.
Dallas, Texas, USA
And valid combinations
(see instructions inside)
HW Hi-Wall
UM Universal Mount
CC Compact Cassette
4C 4-Way Cassette
1C 1-Way Cassette
2C 2-Way Cassette
HD High Static Fan Coil
SD Slim Fan Coil
LD Low Static Fan Coil
GD Large Fan Coil HS
AH Air Handler
OA Outside Air
Evaporator Types
Thank you for selecting LENNOX air conditioners.Please read this manual
carefully before operation and keep it for further reference.
K 230/60/3 and 220/50/3
N 380V/50-60Hz/3Ph
G 460V/60Hz/3Ph
Y 230V/60Hz/3Ph
T 220V/50Hz/1Ph
P 230V/60Hz/1Ph
U 220V/50-60Hz/1Ph
Voltage Rating
V E HW 007 N 4 32 PAvailable digit for future ref.
VE
HW
007
N
4
32
P
Evaporator Type: HW, UM, CC, 4C, 1C, 2C, HD, SD, LD, GD, AH, OA
Cooling Capacity MBtu/h
Certification Status: N: Non-certified; C: AHRI/ETL;
Refrigerant: 4: R410a
Voltage Rating: K, N, G, Y, T, P, U
Lennox Global VRF Unit
Internal Use

Preface
For correct installation and operation, please read all instructions carefully. Before reading the
instructions, please be aware of the following items:
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
WARNING This mark indicates procedures which, if improperly performed, might lead to the
death or serious injury of the user.
CAUTION This mark indicates procedures which, if improperly performed, might possibly result
in personal harm to the user, or damage to property.
NOTICE is used to address practices not related to personal injury.
WARNING
(1) Instructions for installation and use of this product are provided by the manufacturer.
(2) Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel
only.
(3) For the safe operation of this unit, please read and follow the instructions carefully.
(4) During operation, total capacity of indoor units should not exceed the total capacity of outdoor units. otherwise,
poor effect of cooling or heating may result.
(5) Direct operators or maintainers should well keep this manual.
(6) If this unit fails to operate normally, please contact our service center as soon as possible and provide the
following information:
1) Content on the name plate (model number,cooling capacity,production code,ex-factory date.
2)
Malfunction details (before and after the malfunction occurs.
(7) Each unit has been strictly tested and proved to be qualified before ex-factory. In order to prevent units from
being damaged or operating normally because of improper disassembly, please do not disassemble the unit by
yourself. If you need to disassemble and check units, please contact our service center. We will send specialists
to guide the disassembly.
(8) All graphics in this manual is only for your reference. For sales or production reasons,these graphics are subject
to change by manufacturer without prior notice.
(9) This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.Children should be supervised to
ensure that they do not play with the appliance.
User Notice
DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such
waste separately for special treatment is necessary.

Contents
1 Safety Precautions.........................................................................................................1
2 Product Introduction.......................................................................................................2
2.1 Outline of the Unit and Main Parts..............................................................................2
2.2 Rated Operating Condition.........................................................................................3
3 Installation Instruction..................................................................................................3
3.1 Schematic diagram of installation spaces...................................................................3
3.2 Requirements for Communication Line......................................................................3
3.3 Electric Installation .....................................................................................................4
4 Installation Instructions...................................................................................................5
4.1 Installation of Indoor Unit............................................................................................5
4.2 The installation of the rear panel ................................................................................5
4.3 Debugging..................................................................................................................6
4.4 Preparation of the piping hole.....................................................................................6
4.5 Installation of the drainage pipe..................................................................................6
4.6 Installation the connection pipes ................................................................................7
5 Wiring Work....................................................................................................................7
5.1 Connect Cables and Terminals of Wiring Board.........................................................7
5.2 Power Cord Connection.............................................................................................8
5.3 Connection of Communication Line of IDU and ODU.................................................8
5.4 Connection of Communication Line of Wired Controller.............................................9
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network.................9
5.6 Installation of the indoor unit.......................................................................................9
6 The Best Usage Method ..............................................................................................10
7 Maintenance Method....................................................................................................11
7.1 Cleaning panel .........................................................................................................11
7.2 Cleaning the air filters...............................................................................................11
7.3 Check before the usage season...............................................................................12
7.4 Check after the usage season..................................................................................12
8 Table of Error Codes for Indoor Unit............................................................................12
9 Malfunction Analyzing..................................................................................................13
9.1 Service center ..........................................................................................................13
9.2 After-sales service....................................................................................................14
10 Adjusting Method Of The Air Direction.......................................................................14
10.1 Adjusting air direction up and down........................................................................14
10.2 Adjusting air direction left and right.........................................................................14

Multi Variable Air Conditioners WALL Mounted Type Indoor Unit
1
1 Safety Precautions
WARNING
(1) Follow this instruction to complete the installation work. Please carefully read this manual before unit
startup and service.
(2) Wire size of power cord should be large enough.The damaged power cord and connection wire should be
replaced by exclusive cable.
(3) After connecting the power cord, please fix the electric box cover properly in order to avoid accident.
(4) Never fail to comply with the nitrigen charge requirements.Charge nitrogen when welding pipes.
(5) Never short-circiut or cancel the pressure switch to prevent unit damage.
(6) Please firstly connect the wired controller before energization, otherwise wired controller can not be used.
(7) Before using the unit, please check if the piping and wiring are correct to avoid water leakage, refrigerant
leakage, electric shock, or fire etc..
(8) Do not insert fingers or objects into air outlet/inlet grille.
(9) Open the door and window and keep good ventilation in the room to avoid oxygen deficit when the gas/oil
supplied heating equipment is used.
(10) Never start up or shut off the air conditioner by means of directly plug or unplug the power cord.
(11) Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the compressor.
(12) Do not allow children operate this unit.
(13) Do not operate this unit with wet hands.
(14) Turn off the unit or cut off the power supply before cleaning the unit, otherwise electric shock or injury
may happen.
(15) Never spray or flush water towards unit, otherwise malfunction or electric shock may happen.
(16) Do not expose the unit to the moist or corrosive circumstances.
(17) Under cooling mode, please don't set the room temperature too low and keep the temperature difference
between indoor and outdoor unit within 5℃(41˚F).
(18) User is not allowed to repair the unit. Fault service may cause electric shock or fire accidents. Please
contact Lennox appointed service center for help.
(19) Before installation, please check if the power supply is in accordance with the requirements specified on
the nameplate. And also take care of the power safety.
(20) Installation should be conducted by dealer or qualified personnel. Please do not attempt to install the unit
by yourself. Improper handling may result in water leakage, electric shock or fire disaster etc..

Multi Variable Air Conditioners WALL Mounted Type Indoor Unit
2
(21) Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock and fire
accidents.
(22) Make sure the unit can be earthed properly and soundly after plugging into the socket so as to avoid
electric
shock. Please do not connect the ground wire to gas pipe, water pipe, lightning rod or telephone line.
(23) Electrify the unit 8 hours before operation. Please switch on for 8 hours before operation. Do not cut off
the power when 24 hours short-time halting (to protect the compressor).
(24) If refrigerant leakage happens during installation, please ventilate immediately. Poisonous gas will
emerge
if the refrigerant gas meets fire.
(25) Volatile liquid, such as diluent or gas will damage the unit appearance.Only use soft cloth with a little
neutral
detergent to clean the outer casing of unit.
(26) If anything abnormal happens (such as burning smell), please power off the unit and cut off the main
power
supply, and then immerdiately contact Lennox appointed service center.If abnormality keeps going, the unit
might be damaged and lead to electric shock or fire.
(27)Turn off the unit after it runs at least five minutes;otherwise it will influence oil return of the compressor.
(28) Under the standby status, the unit will consume a little power for ensuring reliability of complete unit,
maintaining normal communication and preheating refrigerant. When the unit won’t be used for a long time,
cut off the power of the complete unit. However, please preheat it when operating the unit next time.
2 Product Introduction
2.1 Outline of the Unit and Main Parts
NOTICE! The appearances will be different by the different models of air conditioners.
No. Part Name No. Part Name
①Surface panel ④Guide louver
②Filter ⑤Drain pipe
③Wiring cover

Multi Variable Air Conditioners WALL Mounted Type Indoor Unit
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2.2 Rated Operating Condition
Item Indoor Side Condition Outdoor Side Condition
Dry Bulb Temp℃
(°F) Wet Bulb Temp ℃ (°F) Dry Bulb Temp ℃ (°F) Wet Bulb Temp ℃ (°F)
Rated Cooling 27(80.6) 19(66.2) 35(95) 24(75.2)
Rated Heating 20(68.0) 15(59.0) 7(44.6) 6(42.8)
Indoor Unit Working Temperature Range:16°C(60.8 °F)~32°C(89.6 °F).
3Installation Instruction
3.1 Schematic diagram of installation spaces
(1) The unit shall be installed by the professional personnel according to this
installation instruction to ensure proper use.
(2) Please contact the local Lennox appointed service center before installation. Any malfunctioncaused by the
unit that is not installed by the Lennox appointed service center would probably not be dealt with on time
because of the inconvenience of the business contact.
(3) It should be guided under the professional personnel when the air conditioner unit is moved to other
place.
(4)
The appliance shall not be installed in the laundry.
(5)
The indoor unit should be installed at 2.3m or higher above the floor.
3.2 Requirements for Communication Line
NOTICE! If the unit is installed in the place with strong electromagnetic interference,
shielded wire must be applied on the communication wire between indoor unit and wired
controller. Twisted pair line with shielding function must be applied on the communication
wire between indoor unit and indoor unit(outdoor unit).
3.2.1 Select communication line for indoor unit and wired controller

Multi Variable Air Conditioners WALL Mounted Type Indoor Unit
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Fig 3.2.1
Material type
Total length of
communication line
between indoor unit
and wired controller
L (m/feet)
Wire size (mm2/AWG) Material
Standard Remarks
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤250m
(L≤820-1/5feet) 2×0.75~2×1.25
(2×AWG18~2×AWG16) IEC
60227-5:2007
1.Total length of communication
line can't exceed 250m
(820-1/5feet).
2.The cord shall be Circular cord
(the cores shall be twisted
together).
3.If unit is installed in places with
intense magnetic field or strong
interference, it is necessary to
use shielded wire.
3.2.2 Select communication line for indoor unit and indoor unit (outdoor unit)
Fig 3.2.2
Material Type
Total Length L (m/feet)
of Communication
Cable between Indoor
Unit and Indoor
(Outdoor) Unit
Wire size
(mm2/AWG)
Materi
al
Standa
rd
Remarks
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000m
(L≤3280-5/6feet) ≥2×0.75
(≥2×AWG18)
IEC
60227-5:
2007
1. If the wire diameter is enlarged to 2×1
mm2(2×AWG16), the total
communication line length can reach
1500 m (4921-1/4feet).
2. The cord shall be Circular cord (the
cores shall be twisted together).
3. If unit is installed in places with
intense magnetic field or strong
interference, it is necessary to use
shielded wire.
3.3 Electric Installation
Model Power Supply MCA(A) MOP(A)
VEHW007C432P
208/230V-1ph-60Hz
1 15
VEHW009C432P 1 15
VEHW012C432P 1 15
VEHW018C432P 1 15
VEHW024C432P 1 15

Multi Variable Air Conditioners WALL Mounted Type Indoor Unit
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(1)
Use copper wire only as unit’s power cord. Operating temperature should be within it s rated value.
(2) If the power cord is more than 15m(590-1/2 inch) long, please increase properly the sectional area of
power cord to avoid overload, which may cause accident.
(3) Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at
40°(104°F)Cambient temperature when laying across plastic pipe. Air switch is D type and used at
40°C(104°F). If actual installation condition varies, please lower the capacity appropriately according to
the specifications of power cord and air switch provided by manufacturer.
(4) Install cut-off device near the unit. The minimum distance between each stage of cut-off device should be
3mm(1/8 inch)(The same for both indoor unit and outdoor unit).
(5) If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly
qualified person in order to avoid a hazard.
4 Installation Instructions
4.1 Installation of Indoor Unit
Fig 4.1
Below are dimensions of W, H, D for different models: Unit:mm/inch
Item
Model W H D
VEHW007C432P
VEHW009C432P 843
(33-1/5) 275 (10-5/6) 180 (7)
VEHW012C432P
VEHW018C432P 940
(37) 298 (11-3/4) 200 (7-7/8)
VEHW024C432P 1008
(39-2/3) 319 (12-5/9) 221 (8-5/7)
4.2 The installation of the rear panel
Fig 4.2