Lennox VEP Series Instrucciones de instalación

VEP075N432K

VEP096N432K

VEP120N432K

VEP132N432K

VEP150N432K

Thank you for selecting Lennox VRF. Please read this manual

carefully before operation and keep it for further reference.

INSTALLATION/OPERATION

INSTRUCTIONS

VEP Heat Pump

VRF SYSTEMS

OUTDOOR UNITS

Dallas, Texas, USA

VEP171N432K

VEP192N432K

VEP210N432K

MODEL NUMBER IDENTIFICATION

9(31 .1

Brand/Family

V(= Variable Refrigerant Flow (VRF)

8QLW7\SH

3= +HDW3XPS2'8

Certification Status

N = ETL (220V and 460V)

Refrigerant Type

4 = R-410A

Voltage

K= 220V/3Ph/50-60Hz

G= 460V/3Ph/60Hz

N= 380-415V/3Ph/50-60Hz

Future Use

Internal Use Only

32 = Internal Use

Nominal Cooling Capacity - Tons

26= 22 Tons

288 = 24 Tons

 = 25.5 Tons

3 = 27.5 Tons

3 = 28.5 Tons

360 = 30 Tons

38= 32Tons

40= 33.5 Tons

4 = 35Tons

 .257RQV

096 = 8 Tons

120 = 10 Tons

132 = 1Tons

150 = 125Tons

171 = 14 Tons

192 = 16 Tons

 = 38 Tons

 = 40 Tons

 = 41.5 Tons

 = 43 Tons

 = 45 Tons

 = 46 Tons

 = 47.5 Tons

 = 49 Tons

 = 51 Tons

 = 54 Tons

 = 56 Tons

 = 59 Tons

 = 60.5 Tons

 = 62.5 Tons

 = 63.5 Tons

 = 62 Tons

 = 67 Tons

 = 68.5 Tons

 = 70 Tons

 = 57.5 Tons

210 = 17.5 Tons

228 = 19Tons

246 = 20.5 Tons 438 = 36.5 Tons 30 = 52.5 Tons

6 - 70 Tons

To Users

Thank you for selecting Lennox’s product. Please read this instruction manual carefully

before installing and using the product, so as to master and correctly use the product. In order

to guide you to correctly install and use our product and achieve expected operating effect, we

hereby instruct as below:

(1) 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 responsibility for their safety. Children should be supervised to ensure that

they do not play with the appliance.

(2) In order to ensure reliability of product, the product may consume some power under

stand-by status for maintaining normal communication of system and preheating

refrigerant and lubricant. If the product is not to be used for long, cut off the power

supply; please energize and preheat the unit in advance before reusing it.

(3) Please properly select the model according to actual using environment, otherwise it

may impact the using convenience.

(4) This product has gone through strict inspection and operational test before leaving the

factory. In order to avoid damage due to improper disassembly and inspection, which

may impact the normal operation of unit, please do not disassemble the unit by

yourself. You can contact with the special maintenance center of our company if

necessary.

(5) For personal injury or property loss and damage caused by improper operation such

as improper installation and debugging, unnecessary maintenance, violation of related

national laws and rules and industrial standard, and violation of this instruction manual,

etc., we will bear no liability.

(6) When the product is faulted and cannot be operated, please contact with our

maintenance center as soon as possible by providing the following information.

1) Contents of nameplate of product (model, cooling/heating capacity, product No.,

ex-factory date).

2) Malfunction status (specify the situations before and after the error occurs).

(7) All the illustrations and information in the instruction manual are only for reference. In

order to make the product better, we will continuously conduct improvement and

innovation. We have the right to make necessary revision to the product from time to

time due to the reason of sales or production, and reserve the right to revise the

contents without further notice.

(8) The final right to interpret for this instruction manual belongs to Lennox.

Contents

1 Safety Precautions ............................................................................................................. 1

2 Product Introduction ........................................................................................................... 2

2.1 Names of Main Parts .............................................................................................................. 2

2.2 Combinations of Outdoor Units .............................................................................................. 3

2.3 Combinations of Indoor and Outdoor Units ............................................................................ 4

2.4 The Range of Production Working Temperature .................................................................... 5

3 Preparation before Installation ............................................................................................ 6

3.1 Standard Parts ........................................................................................................................ 6

3.2 Installation Site ....................................................................................................................... 6

3.3 Piping Work Requirements .................................................................................................... 11

4 Installation Instruction ........................................................................................................12

4.1 Physical Dimension of the Outdoor Unit and Mounting Hole ............................................... 12

4.2 Connection Pipe ................................................................................................................... 15

4.3 Installation of the Connection Pipe ....................................................................................... 26

4.4 Air Purging and Refrigerant Charge ..................................................................................... 31

4.5 Electric Wiring ....................................................................................................................... 34

4.6 System Communication ........................................................................................................ 37

4.7 Connection Method and Steps for System Communication................................................. 40

4.8 External Electrical Wiring Diagram ....................................................................................... 45

5 Check Items after Installation and Trial Run ......................................................................47

5.1 Check Items after Installation ............................................................................................... 47

5.2 Trial Run ................................................................................................................................ 47

6 Common Malfunction and Troubleshooting .......................................................................61

7 Error Indication ..................................................................................................................63

8 Maintenance and Care ......................................................................................................67

8.1 Outdoor Heat Exchanger ...................................................................................................... 67

8.2 Drain Pipe ............................................................................................................................. 67

8.3 Notice before Seasonal Use ................................................................................................. 67

8.4 Maintenance after Seasonal Use ......................................................................................... 68

8.5 Parts Replacement ............................................................................................................... 68

9 After-sales Service ............................................................................................................68

1 Safety Precautions

(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 cannot 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 5ºC(41ºF).

(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 disast er etc..

(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.

Lennox VRF Unit

(23) Energize 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 immediately contact Lennox appointed service ce nter. If abnormality keeps going,

the unit might be damaged and lead to electric shock or fire.

Lennox will not assume responsibility of personal injury or equipment damage caused by

improper installation and commission, unnecessary service and incapable of following the rules

and instructions listed in this manual.

2 Product Introduction

Lennox VRF Modular System adopts inverter compressor technology. According to

change the displacement of compressor, stepless capacity regulation within range of

10%-100% can be realized. Various product lineup is provided with capacity range from

22.4kW to 246kW, which can be widely used in working area and especially applicable to the

place with variable load change. Lennox VRF is absolutely your best choice.

2.1 Names of Main Parts

Fig.1

NO.

①

②

③

④

⑤

Name

Fan, Motor

Electric Box

Assembly

Valve interface

Power cord

through-hole

Communication

code

through-hole

Lennox VRF Unit

2.2 Combinations of Outdoor Units

Model(Single)

VEP228N432K VEP246N432K VEP267N432K VEP288N432K

Model(Combined)

VEP096N432K

+VEP132N432K

VEP096N432K

+VEP150N432K

VEP096N432K

+VEP171N432K

VEP096N432K

+VEP192N432K

Model(Single)

VEP306N432K VEP330N432K VEP342N432K VEP360N432K

Model(Combined)

VEP096N432K

+VEP210N432K

VEP120N432K

+VEP210N432K

VEP132N432K

+VEP210N432K

VEP150N432K

+VEP210N432K

Model(Single)

VEP381N432K VEP402N432K VEP420N432K VEP438N432K

Model(Combined)

VEP171N432K

+VEP210N432K

VEP192N432K

+VEP210N432K

VEP210N432K

+VEP210N432K

VEP096N432K

+VEP150N432K

+VEP192N432K

Model(Single)

VEP456N432K VEP480N432K VEP498N432K VEP516N432K

Model(Combined)

VEP096N432K

+VEP150N432K

+VEP210N432K

VEP120N432K

+VEP150N432K

+VEP210N432K

VEP096N432K

+VEP192N432K

+VEP210N432K

VEP096N432K

+VEP210N432K

Model(Single)

VEP540N432K VEP552N432K VEP570N432K VEP591N432K

Model(Combined)

VEP120N432K

+VEP210N432K

VEP132N432K

+VEP210N432K

VEP150N432K

+VEP210N432K

VEP171N432K

+VEP210N432K

Model(Single)

VEP612N432K VEP630N432K VEP648N432K VEP669N432K

Model(Combined)

VEP192N432K

+VEP210N432K

VEP210N432K

+VEP210N432K

VEP096N432K

+VEP150N432K

+VEP192N432K

+VEP210N432K

VEP096N432K

+VEP171N432K

+VEP192N432K

+VEP210N432K

Model(Single)

VEP690N432K VEP708N432K VEP726N432K VEP750N432K

Model(Combined)

VEP096N432K

+VEP192N432K

+VEP210N432K

VEP096N432K

+VEP192N432K

+VEP210N432K

VEP096N432K

+VEP210N432K

VEP120N432K

+VEP210N432K

Model(Single)

VEP762N432K VEP780N432K VEP801N432K VEP822N432K

Model(Combined)

VEP132N432K

+VEP210N432K

VEP150N432K

+VEP210N432K

VEP171N432K

+VEP210N432K

VEP192N432K

+VEP210N432K

Model(Single)

VEP840N432K

Model(Combined)

VEP210N432K

+VEP210N432K

Lennox VRF Unit

2.3 Combinations of Indoor and Outdoor Units

(1)The following table indicates the number of IDU for ODU

ODU Model

Max number of connectable IDU (unit)

VEP075N432K

VEP096N432K

VEP120N432K

VEP132N432K

VEP150N432K

VEP171N432K

VEP192N432K

VEP210N432K

VEP228N432K

VEP246N432K

VEP267N432K

VEP288N432K

VEP306N432K

VEP330N432K

VEP342N432K

VEP360N432K

VEP381N432K

VEP402N432K

VEP420N432K

VEP438N432K

VEP456N432K

VEP480N432K

VEP498N432K

VEP516N432K

VEP540N432K

VEP552N432K

VEP570N432K

VEP591N432K

VEP612N432K

VEP630N432K

VEP648N432K

VEP669N432K

VEP690N432K

VEP708N432K

VEP726N432K

VEP750N432K

VEP762N432K

VEP780N432K

VEP801N432K

VEP822N432K

VEP840N432K

The total capacity of indoor units should be within 50%~135% of that of outdoor units.

Lennox VRF Unit

Fig.2

Fig.2 is the combination view of the ODU of Modular DC Inverter Multi VRF System and

the IDU of Multi VRF System. IDU can be cassette type, one-way cassette type, wall-mounted

type, duct type, etc. When any one IDU receives operation signal, ODU will start to work

according to the capacity; when all IDUs stop, ODU will also stop.

2.4 The Range of Production Working Temperature

Cooling

Heating

When the indoor units are all VRF fresh air processor, the unit operating range is as

follows:

Cooling

Ambient temperature: 16°C(60.8℉)~45°C(113℉)

Heating

Ambient temperature: -7°C(19.4℉)~16°C(60.8℉)

NOTICE! Out of the working Temperature Range may damage this products and will

invalidate the warranty.

Lennox VRF Unit

Ambient temperature: -5º C (23º F )~52º C (125.6º F )

Ambient temperature: -20ºC (-4º F )~24ºC (75.2º F )

3 Preparation before Installation

NOTICE! The picture is only used for reference and the actual product prevails. Unit:

mm(in.).

3.1 Standard Parts

Please use the following standard parts supplied by Lennox.

Parts for Outdoor Unit

Number

Name

Picture

Quantity

Remarks

Owner's Manual

Wiring (match with

resistance)

Must be connected to the last

IDU of communication

connection

Mark (Master )

Attach on the wired controller of

master IDU or on the front panel

3.2 Installation Site

WARNING

(1) Install the unit at a place where is adequate to withstand the weight of the unit and make sure the unit

would not shake or fall off.

(2) Never expose the unit under direct sunshine and rainfall.Install the unit at a place where is against

dust, typhoon and earthquake.

(3) Try to keep the unit away from combustible,inflammable and corrosive gas or exhaust gas.

(4) Leave some space for heat exchanging and servicing so as to guarantee unit normal operation.

(5) Keep the indoor and outdoor units close to each other as much as possible so as to decrease the pipe

length and bends.

(6) Never allow children to approach to the unit and take measures to prevent children touching the unit.

Lennox VRF Unit

3.2.1 When the outdoor unit is totally surrounded by walls, please refer to following

figures for space dimension.

3.2.1.1 Space dimension for single-module unit

Unit: mm(in.)

Fig.3

3.2.1.2 Space dimension for dual-module unit

Unit: mm(in.)

Fig.4

Lennox VRF Unit

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