Lennox VEHW007N432T Installation instructions

VEHW007N432P
VEHW009N432P
VEHW012N432P
VEHW015N432P
VEHW017N432P
VEHW019N432P
VEHW021N432P
VEHW024N432P
VEHW007N432T
VEHW009N432T
VEHW012N432T
VEHW015N432T
VEHW017N432T
VEHW019N432T
VEHW021N432T
VEHW024N432T
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:
(1) Execution standard of VRF: ISO 15042-2011.
(2) For the safe operation of this unit, please read and follow the instructions carefully.
(3) During operation, total capacity of indoor units should not exceed the total capacity of
outdoor units. Otherwise, indoor units will not provide enough cooling or heating.
(4) Direct operators or maintainers should well keep this manual.
(5) If this unit fails to operate normally, please contact our service center as soon as possible
and provide the following information:

Content on the nameplate (model number, cooling capacity, production code, ex-factory
date).
Malfunction details (before and after the malfunction occurs).
(6) 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.
(7) All graphics in this manual are only for your reference. For sales or production reasons,
these graphics are subject to change by manufacturer without prior notice.
(8) 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.If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
(9) 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.
User Notice
Correct Disposal of this product
This marking indicates that this product should not be disposed with other
household wastes throughout the EU. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, recycle it
responsibly to promote the sustainable reuse of material resources. To return
your used device, please use the return and collection systems or contact the
retailer where the product was purchased. They can take this product for
environmental safe recycling.
R410A(R32/125:50/50):2087.5

Contents
1 Safety Precautions........................................................................................................................ 1
2 Product Introduction .................................................................................................................... 3
2.1 Outline of the Unit and Main Parts..............................................................................3
2.2 Rated Operating Condition.........................................................................................3
3 Installation Instruction .............................................................................................................. 3
3.1 Schematic diagram of installation spaces...................................................................4
3.2 Requirements for Communication Line......................................................................4
3.3 Wiring Requirements..................................................................................................5
4 Installation Instructions................................................................................................................ 7
4.1 Installation of Indoor Unit............................................................................................7
4.2 The installation of the rear panel ................................................................................8
4.3 Debugging..................................................................................................................8
4.5 Installation of the drainage pipe..................................................................................9
4.6 Installation the connection pipes ................................................................................9
5 Wiring Work ................................................................................................................................. 9
5.1 Connect Cables and Terminals of Wiring Board.......................................................10
5.2 Power Cord Connection...........................................................................................10
5.3 Connection of Communication Line of IDU and ODU...............................................11
5.4 Connection of Communication Line of Wired Controller...........................................11
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network...............12
5.6 Installation of the indoor unit.....................................................................................12
6 The Best Usage Method ............................................................................................................. 13
7 Maintenance Method................................................................................................................. 13
7.1 Cleaning panel .........................................................................................................13
7.2 Cleaning the air filters...............................................................................................14
7.3 Check before the usage season...............................................................................14
7.4 Check after the usage season..................................................................................15
8 Table of Error Codes for Indoor Unit .......................................................................................... 15
9 Malfunction Analyzing................................................................................................................ 15
9.1 Service center ..........................................................................................................16
9.2 After-sales service....................................................................................................16
10 Adjusting Method Of The Air Direction.................................................................................... 16
10.1 Adjusting air direction up and down........................................................................16
10.2 Adjusting air direction left and right.........................................................................16

1
1 Safety Precautions
means items that must be forbidden! Otherwise, it may lead to personal injury or death or
serious damage.
means items that must be followed! Otherwise, it may lead to personal injury or property
loss.
Follow this instruction to
complete the installation
work. Please carefull read
this manual before unit
startup and service.
Installation should be conducted by
dealer or qualified
personnel. Please do not attempt
to install the unit by
yourself. Improper handling may
result in waterleakage, electric
shock or fire disaster etc.
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.
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
telephoneline.
Be sure to use the
exclusive accessory and
part to prevent the water
leakage, electric shock
and fire accidents.
If refrigerant leakage happens
during installation, please
ventilate immediately. Poisonous
gas will emerge if the
refrigerant gas meets fire.
Wire size of power cord
should be large enough.
The damaged power cord
and connection wire
should be replaced by
exclusive cable.
After connecting the power cord,
please fix the electric box cover
properly in order to avoid accident.
Never fail to comply with
the nitrigen charge
requirements.Charge
nitrogen when welding
pipes.
Never short-circiut or cancel
the pressure switch to prevent
unit damage.
Please firstly connect the
wired controller before
energization,otherwise
wired controller can not be
used.
Before using the unit, please
check if the piping and wiring
are correct to avoid water
leakage,refrigerant leakage,
electric shock, or fire etc.
High Wall Type Indoor Unit

2
Do not insert fingers or
objects into air outlet/inlet
grille.
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.
Never start up or shut off the
air conditioner by
means of directly plug or
unplug the power cord.
Turn off the unit after it runs at
least five minutes; otherwise it will
influence oil return of the
compressor.
Do not allow children
operate this unit. Do not operate this unit with wet hands.
Turn off the unit or
cut off the power supply
before cleaning the unit,
otherwise electric shock or
injury may happen.
Never spray or flush water
towards unit, otherwise
malfunction or electric shock may
happen.
Do not expose the unit to the
moist or corrosive
circumstances.
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).
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.
Under cooling mode, please don't
set the room temperature too low and
keep the temperature
difference between indoor and
outdoor unit within 5.
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.
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.
High Wall Type Indoor Unit

3
2 Product Introduction
2.1 Outline of the Unit and Main Parts
Note：
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
2.2 Rated Operating Condition
Item Indoor Condition Outdoor Condition
DBTemperature°C WBTemperature°C DBTemperature°C WBTemperature°C
Rated Cooling 27 19 35 24
Rated Heating 20 15 7 6
3 Preparations for Installation
3.1 Location for Installation
(1) The appliance shall not be installed in the laundry.
(2) The indoor unit should be installed at 2.3m or higher above the floor.
(3) The top holder must be strong enough to support unit’s weight.
(4) Drain pipe can drain water out easily.
(5) There is no obstacle at inlet or outlet. Please ensure good air circulation.
(6) Keep the unit away from heating source, inflammable gas or smoke.
High Wall Type Indoor Unit

4
3.2 Schematic diagram of installation spaces
Notes:
①The unit shall be installed by the professional personnel according to
this installation instruction to ensure proper use.
②Please 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.
③It should be guided under the professional personnel when the air conditioner unit is
moved to other place.
3.3 Requirements for Communication Line
Note:
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).
3.3.1 Select communication line for indoor unit and wired controller
Fig 3.3.1
High Wall Type Indoor Unit

5
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×AW
G16)
IEC
60227-5:200
7
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.
3.3.2 Select communication line for indoor unit and indoor unit (outdoor unit)
Fig 3.3.2
Material Type
Total Length L (m/feet)
of Communication
Cable between Indoor
Unit and Indoor
(Outdoor) Unit
Wire size
(mm2/AWG) Material Standard 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.
3.4 Wiring Requirements
Model Power Cord Size Air Switch apacity
(A)
Minimum Sectional
Area of
Ground Wire(mm2)
Minimum Sectional
Area of Power
Cord(mm2)
VEHW007N432T
VEHW009N432T
VEHW012N432T
VEHW015N432T
VEHW017N432T
VEHW019N432T
VEHW021N432T
VEHW024N432T
220-240V ~ 50Hz 6 1 1
High Wall Type Indoor Unit

6
Model Power Cord Size Air Switch apacity
(A)
Minimum
Sectional Area
of Ground
Wire(mm2)
Minimum Sectional
Area of Power
Cord(mm2)
VEHW007N432P
VEHW009N432P
VEHW012N432P
VEHW015N432P
VEHW017N432P
VEHW019N432P
VEHW021N432P
VEHW024N432P
208~230V ~ 60Hz 6 1 1
Notes:
①Use copper wire only as unit’s power cord. Operating temperature should be within its
rated value.
②If the power cord is more than 15m long, please increase properly the sectional area of
power cord to avoid overload, which may cause accident.
③Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at
40°Cambient temperature when laying across plastic pipe. Air switch is D type and used at 40°C.
If actual installation condition varies, please lower the capacity appropriately according to the
specifications of power cord and air switch provided by manufacturer.
④If 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.
⑤Install cut-off device near the unit. The minimum distance between each stage of cut-off
device should be 3mm(The same for both indoor unit and outdoor unit).
High Wall Type Indoor Unit

7
4 Installation Instructions
4.1 Installation of Indoor Unit
Below are dimensions of W, H, D for different models:
Unit: mm
Item
Model W H D
VEHW007N432T
VEHW009N432T 843 275 180
940 298 200
1008 221 319
VEHW007N432P
VEHW009N432P
VEHW012N432P
VEHW015N432P
VEHW017N432P
VEHW012N432T
VEHW015N432T
VEHW017N432T
VEHW019N432P
VEHW021N432P
VEHW024N432P
VEHW019N432T
VEHW021N432T
VEHW024N432T
High Wall Type Indoor Unit