liebert pexum eng asia

Liebert® PEX+ Series
Precision Air Conditioning
User Manual

I


Copyright by Vertiv Co. Ltd.
The content in this document is subject to change without notice. All rights, including rights of
translation, reproduced by printing, copying or similar methods, and even of parts, are
reserved. Violators will be liable for damages. All rights, including rights deriving from patent
license or registration of a utility model or design, are reserved. No part of this document may
be reproduced or transmitted in any form or by any means without the prior written consent of
Vertiv Co. Ltd.

Notice
The purchased products, services, and features are stipulated by the contract made between
Vertiv Co. and the customer. All or part of the products, services, and features described in this
document may not be within the purchasing scope or the usage scope. Unless otherwise
specified in the contract, all statements, information, and recommendations in this document
are provided "AS IS" without warranties, guarantees or representations of any kind, either
express or implied. The information in this document is subject to change without notice.
Every effort has been made in the preparation of this document to ensure the accuracy of the
contents, but all statements, information, and recommendations in this document do not
constitute a warranty of any kind, express or implied.

Vertiv Co., Ltd.
• China
Website: www.vertivco.com
E-mail:
Customer service hotline: 4008876510

•

Asia Pacific

Homepage: www.vertivco.com.
E-mail:
For Technical Support, users may contact the nearest Vertiv Co. local sales office or service
centre.

Vertiv I Liebert PEX+ I User Manual

II


Purpose of the Document
This document applies to the series of precision air conditioners and cooling solutions which
maintain an optimal environmental control of technological ecosystems at minimal operating
costs. This document gives an overview of the specifications, installation, commissioning and
maintenance procedures with troubleshooting from the user perspective. The figures used in
this document are for reference only.
Please read this manual carefully before installing, maintaining, and troubleshooting.

Styling used in this Guide
The styles used in the manual will be defined as mentioned in the following table:
Situation

Description
The Warning/Danger/Caution note indicates a
hazardous or potentially harmful situation that can
result in death or injury. It also indicates

Warning/Danger/Caution

instructions that need to be adhered to, failing
which may result in danger and safety issues
thereby having an adverse effect on the reliability
of the device and security. Even for practices not
related to physical injury, the content under the
Warning heading is used for precautions which
need to be taken which, otherwise, could result in
equipment damage, performance degradation, or
interruption in service.

Note

The Note section indicates additional and useful
information. It also calls attention to best practices
and industry-best protocols that are standardized
and help make maximum utilization of the
resources at hand. Helpful information related to
the product also comes under the Note heading,
helping the users with the definitions, concepts,
and terminologies used in the manual.

Version History
Issue

Revision

31013273

V1.0

Vertiv I Liebert PEX+ I User Manual

Change
-

III


Safety Precautions and Measures
The important safety precautions and measures that should be followed during the
installation and maintenance are described in the following sections.
Read the manual prior to installation and operation of the unit. Only qualified personnel should
move, install, or service this equipment.
The user reads and considers all the precautions, compliance, and safety measures before
working on the equipment. The unit control must be used exclusively for the purpose which it
is intended for; the manufacturer takes no liability for incorrect use or a modification to the
unit control.
Adhere to all the Warnings and Cautionary measures included in the manual.
Please read this manual carefully before installing, maintaining and
troubleshooting; especially the Warning/ Danger/ Caution information in the
User Guide. Apart from the User Guide, also pay attention to the warning labels
on the unit and its components.
This manual is retained for the entire service life of the machine. The user must read all the
precautions, danger, warnings, and cautionary measures mentioned in the manual prior to
carrying out any operations on the machine. Each machine is equipped with an electric
insulation which allows the users to work in safe conditions. The main switch is positioned on
the electrical panel cover; Open the right door to access it. Before any maintenance operation,

switch off the machine with this electronic insulation device to eliminate risks such as
electrical shocks, burns, automatic restarting, moving parts, and remote control. The panel key,
supplied along with the unit, must be kept by the personnel responsible for the maintenance.
The protective covers can be removed after the electric power has been cut off by opening
the main switch.
In the following sections, look at the various cautionary measures and warnings that need to
be read carefully prior to installing or operating the system.
Disconnect the local and remote power supplies prior to working with the unit.
Prior to the installation process, read all the instructions, verify if all the parts are in place, and
check the nameplate to ensure that the voltage matches the utility power that is available for
that unit.
The controller doesn’t isolate power from the unit even in the Off mode. Moreover, some
internal components require and receive power even during the Off mode.
If the unit door is open while the fans are operating, the airflow may result in abrupt slamming
of the door resulting in injury. Another aspect is the presence of small objects in the fans bay

Vertiv I Liebert PEX+ I User Manual

IV


which may result in object ejection during the fan start-up and there is a probable risk of being
hit by these objects leading to grievous injury as well as causing equipment damage.
The unit contains fluids and gasses under high pressure. Therefore, the pressure should be
relieved before working with the piping.
Various components such as compressors, refrigerant discharge lines, and humidifiers are
extremely hot during the unit operation. Therefore, allow sufficient time for the unit to cool
down before working with the unit cabinet. Handle the unit with extreme caution and wear
safety equipment such as protective gloves, safety shoes, and arm protection while working
with the hot compressors, discharge lines, and reheats.

There is a risk of leaking water that can cause damage to the equipment as well as the
building. There should be an effective water drain connection and facilities. Installation should
be precise. Implementation of the application and service practices should be suitable and
fault-free. Not complying with these norms will result in water leakage from the unit. Water
leakage can result in massive damage and loss of critical equipment in the hosting ecosystem.
Therefore, care should be taken to ensure that the unit must not be located directly above any
equipment that could sustain damage due to water and excessive moisture. Using a leak
detection system for the unit and system supply lines are recommended by Vertiv Co.

Vertiv I Liebert PEX+ I User Manual

V


TABLE OF CONTENTS
PART I GENERAL INFORMATION ........................................................ 1
1

Product Overview ............................................................................. 2
1.1 Product Introduction ................................................................................................................. 2
1.2 Model Description....................................................................................................................... 3
1.3 Model Nomenclature .................................................................................................................. 4
1.4 Components of PEX+ model .................................................................................................... 5
1.4.1 Compressor.................................................................................................................. 5
1.4.2 Evaporator ................................................................................................................... 5
1.4.3 Thermal Expansion Valve ......................................................................................... 6
1.4.4 Infrared humidifier...................................................................................................... 6
1.4.5 EC Fans ......................................................................................................................... 7
1.4.6 Electric Heater ............................................................................................................ 7
1.4.7 Sight Glass ................................................................................................................... 8

1.4.8 iCOM-Controller.......................................................................................................... 8
1.4.9 Filter Drier .................................................................................................................... 9
1.4.10 Condenser .................................................................................................................... 9
1.5 Optional Components ......................................................................................................... 10
1.5.1 Electronic Expansion Valve (EEV) ......................................................................... 10
1.5.2 Electrode humidifier ................................................................................................. 10
1.5.3 Extended piping kit .................................................................................................. 11
1.5.4 Low temperature kit ................................................................................................. 11
1.5.5 Two stage electric heater ....................................................................................... 11
1.5.6 Up flow Plenum ......................................................................................................... 11
1.5.7 High efficiency Filter................................................................................................ 11
1.5.8 Water leakage alarm................................................................................................. 11
1.5.9 Smoke and fire detectors ........................................................................................ 12
1.5.10 Supply Air Temperature Sensor ............................................................................ 12
1.5.11 Supply Air Pressure Sensor .................................................................................... 12

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VI


1.5.12 Remote Sensor .......................................................................................................... 12
1.5.13 Smoke sensor ............................................................................................................ 12
1.5.14 IS - Unity card ............................................................................................................ 12
1.6 Working Conditions ............................................................................................................. 13
1.6.1 Storage Environment ............................................................................................... 13
1.6.2 Operating Environment ........................................................................................... 13

PART II INSTALLATION ....................................................................... 14
2. Installation ....................................................................................... 15

2.1 Pre-installation ..................................................................................................................... 15
2.1.1 Transportation & Movement .................................................................................. 15
2.1.2 Unpacking .................................................................................................................. 16
2.1.3 Inspection................................................................................................................... 17
2.2 Installation Preparation (Site Preparation) .................................................................... 18
2.2.1 Equipment Room Requirement .............................................................................. 18
2.2.2 Installation Space requirements ............................................................................ 19
2.2.3 Maintenance Space requirement........................................................................... 19
2.3 Installation Tools.................................................................................................................. 20
2.4 System Arrangement during Installation ........................................................................ 21
2.5 System Installation Mode ................................................................................................... 22
2.6 Product Dimensions ............................................................................................................ 23
2.6.1 Indoor Unit ................................................................................................................. 23
2.6.2 Plenum dimensions (for Upflow unit) ................................................................... 24
2.7 Dimensions and weight of condenser .............................................................................. 25
2.8 Positions and dimensions of air outlet ............................................................................. 25
2.8.1 Base pallet cut-out location dimensions .............................................................. 25
2.8.2 Position and dimensions of air outlet on top cover ............................................ 26
2.8.3 Side panel knock-out locations .............................................................................. 27
2.9 Indoor Unit Installation ....................................................................................................... 28
2.9.1 Base Installation........................................................................................................ 28
2.9.2 Vibration absorbing ................................................................................................. 28
2.9.3 Unit Cabinet ............................................................................................................... 28
2.10 Piping.................................................................................................................................... 28
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VII


2.10.1 Connecting condensate drain pipe of indoor unit ............................................. 29

2.10.2 Connecting water inlet pipe of humidifier .......................................................... 29
2.10.3 Connecting the pipes of electrode humidifier (for the unit that uses
electrode humidifier) ........................................................................................................... 30
2.10.4 Connecting copper pipes (discharge pipe and liquid pipe) between indoor
unit and condenser .............................................................................................................. 30
2.10.5 Pipe Extension Kit (Optional) ....................................................................................... 33
2.11 Lowering the Fan (For Down Flow Unit) ......................................................................... 34
2.12 Removing Fastener and Vibration Absorber ................................................................ 36
2.12.1 Removing transportation fixing plate of compressor ..................................... 36
2.12.2 Removing fastener of infrared humidifier ......................................................... 37
2.12.3 Removing pipe fasteners ...................................................................................... 37
2.13 Installation Inspection ....................................................................................................... 38
2.14 Electrical Installation ......................................................................................................... 39
2.14.1 Installation Notes ................................................................................................... 39
2.14.2 Wiring of Indoor Unit.............................................................................................. 39
2.14.3 Wiring of Condenser .............................................................................................. 43
2.14.4 Electrical Installation Inspection ......................................................................... 44

PART III SYSTEM OPERATION AND GENERAL MAINTENANCE ...45
3. Controller Operation ..................................................................... 46
3.1 iCOM Display Components & Functions ......................................................................... 46
3.2 Control Interface - Large Display...................................................................................... 48
3.3 Operation ............................................................................................................................... 52
3.3.1

Single Unit Functions............................................................................................. 52

3.3.2

Setpoints .................................................................................................................. 55

3.3.3

User-Graphic Menu Screens ................................................................................ 56

3.3.4 Event Log ................................................................................................................. 57
3.3.5

View Network .......................................................................................................... 57

3.3.6 User-Set Alarms Menu Screens ........................................................................... 57
3.3.7

User- User-Sensor Data Menu Screens.............................................................. 57

3.3.8

User-Display Setup Menu Screen ....................................................................... 58

3.3.9 User-Total Run Hours Menu Screens ................................................................. 59
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VIII


3.3.10 User-Sleep Mode Menu Screens.......................................................................... 59
3.4 Event Types and Properties .............................................................................................. 59
3.4.1

Event Types............................................................................................................. 59

4 INTELLISLOT ...................................................................................63
4.1 Introduction of IS Unity Card ............................................................................................. 63
4.2 Installing Host Communication Card ............................................................................... 63
4.2.1 Installing communication card ............................................................................... 63
4.2.2 Connection ................................................................................................................. 64
4.3 Commissioning of Host Communication Component ................................................... 64
4.3.1

Assigning the Card’s IP Address ......................................................................... 64

4.3.2 Connect an Ethernet Cable .................................................................................. 65
4.3.3 Connect an RS-485 Serial Cable.......................................................................... 66
4.4 Configure the Card .............................................................................................................. 67
4.4.1

Enable Protocols ..................................................................................................... 68

5 System Maintenance & Troubleshooting ................................... 74
5.1 Monthly Routine Inspection Items .................................................................................... 75
5.2 Routine Biannual Inspection .............................................................................................. 76
5.3 Self-diagnosis Function ...................................................................................................... 77
5.4 Electrical Connection Inspection ...................................................................................... 77
5.5 Control Component Appearance Inspection .................................................................. 77
5.6 Air Filter ................................................................................................................................. 79
5.7 Infrared Humidifier .............................................................................................................. 79
5.8 Electric Heater ...................................................................................................................... 80

6 Appendix – Circuit Diagram ......................................................... 84

Vertiv I Liebert PEX+ I User Manual

IX


PART I
GENERAL INFORMATION

1


1 Product Overview
1.1 Product Introduction
The Liebert PEX+ series is the next generation series of air conditioners that provide precise
environmental control. The Liebert PEX+ models are the latest in the long line of modern
enterprise-grade products from the Liebert family. Incorporating the high standards associated
with the Liebert name, the PEX+ series utilizes the latest technology, system components, and
streamlined manufacturing process.
Liebert PEX+ air conditioners are products that are specifically created and designed for the
data centers, computer rooms, and similar ecosystems which call for a high degree of accuracy
and precision. It addresses the needs and challenges associated with such applications and
setups. It caters to sensitive applications which need a suitable environment for optimal
performance. Therefore, care should be taken while testing these sensitive products or
maintaining a favorable environment for mission critical equipment, as even a slight deviation
may lead to inaccurate results. Precision Air Conditioning must not only keep room conditions
within a specific range but also must have the precision to react quickly to a drastic change in
heat load and prevent wide temperature fluctuations.
The PEX+ air cooled AC unit is packed with features such as high reliability, high sensible heat
ratio, and large airflow. It is an excellent system that adheres to the standards in Precision Air
Cooling in terms of energy-efficiency, space requirements, and reliability.

Vertiv I Liebert PEX+ I User Manual

2


1.2 Model Description
The Liebert PEX+ appearance is shown in Figure 1-1.

Figure 1-1 PEX+ Model

Figure 1-2 Main Components

Vertiv I Liebert PEX+ I User Manual

3


1.3 Model Nomenclature
The model of the PEX+ series AC is fully-defined by twenty-five digits, as shown in Figure 1-3.
1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

P

1

0

5

0

D

A

1

3

S

H

S

1

2

S

1

D

0

0

0

C

E

0

L

0

Digit 1 Product model
P

Digit 16 Enclosure options

PEX+

Digit 2 Product model
1-2

Number of Modules/Bays

Digit 3 Cooling Capacity kW
0-9

Nominal Net Cooling Capacity - kW
Nominal Net Cooling Capacity - kW

Digit 5 Cooling Capacity kW
0-9

Digit 6 Air Discharge
Upflow

D

Downflow

White orange peel grain coating

6

Color Charcoal grey

D

Main non-Locking Disconnect

P

Dual Power Supply Parallel

A

Dual Power Supply Auto Alternate(Interlocking contactor

T

Dual Power Supply Auto Alternate(ATS)

Digit18 Lock Out Low Voltage Option

Nominal Net Cooling Capacity - kW

U

Standard Color black orange peel grain coating

2

Digit 17 Mains Switch High Voltage Option

Digit 4 Cooling Capacity kW
0-9

1

0

None

H

Reheat & Humidity Lockout

Digit 19 Monitoring

Digit 7 System type

0

No Card

A

Air cooled

7

Unity card

W

Water cooled

8

Unity card*2

D

Dual Cool-Chilled water+Air cooled

H

Dual Cool-Chilled water+Water cooled

Digit 20 Sensors
0

None

Digit8 Airflow

S

Smoke Sensor

1

H

High Temperature

F

Smoke & High Temp

EC plug fan-Standard Static

Digit 9 Power Supply
3

380-415V / 3ph / 50Hz+N

R

Remote sensor

T

380V / 3ph / 60Hz+N

N

Supply Air Temperature Sensor

A

Supply air pressure sensor

X

Other sensors

Digit 10 Cooling System
C

Compliant Scroll Single Circuit, R407C

S

Compliant Scroll Dual Circuit, R407C

E

Digital Scroll Single Circuit, R407C

P

Packaging - Standard Cardboard and Wooden Pallet

D

Digital Scroll Dual Circuit, R407C

C

Packaging - Wooden crate

4

Compliant Scroll Single Circuit, R410A

6

Compliant Scroll Dual Circuit, R410A

7

Digital Scroll Single Circuit, R410A

T

Digital Scroll Dual Circuit, R410A

Digit 21 Packaging

Digit 22 Special Requirements
E

For Export

Digit 23 Order Identifier

Digit 11 Humidification

0

Standard Static

1

High ESP 100 Pa

0

None

2

High ESP 200 Pa

H

Infrared Humidifier

3

High Airflow/ESP other

S

Electrode humidifier

X

SFA Included

Digit 12 Display

Digit 24 Order Identifier

S

Standard Display

0

None

L

Large Display

L

Air cooled-long piping>30m

C

Low temp Kits

Digit 13 Re-Heating
0

None

B

Low temp Kits+Long piping

1

Electric heating Std 1 Stage

X

SFA Included

2

Electric heating Opt. 2 Stage

Digit 25 Order Identifier

Digit 14 Filtration
2

G4

3

F5

0

None

X

SFA Included

Digit 15 Coil and Valves
S

Standard DX Air cooled coil，TXV

E

Standard DX Air cooled coil，EEV

Figure 1-3 - Nomenclature

Vertiv I Liebert PEX+ I User Manual

4


1.4 Components of PEX+ model
An overview of the main components, optional components and features of the PEX+ AC
series is mentioned in this section.

1.4.1

Compressor

The Liebert PEX+ series models comprise of a Copeland scroll compressor which has a host of
promising features such as low operating noise, less vibration, and high reliability. The
Rotalock (screw thread) connection mode makes the maintenance easier. Its compactness,

smooth compression with scroll operation and high energy efficiency ratio make it an ideal
compressor to bank on for the PEX+ series.

Figure 1-4 Compressor

1.4.2 Evaporator
The evaporator consists of a V-coil (for up flow)/A-coil (for down flow) incorporating drawthrough air design for uniform air distribution. The coil is constructed of enhanced surface
aluminum fins mechanically bonded to enhanced surface copper tubes. The coil frame is
fabricated from hot dipped galvanized sheet metal and the stainless-steel condensate drip
tray. Hydrophilic coating on cooling coil enhances longevity.
The sophisticated design of the distributor ensures that the refrigerant is distributed evenly in
each loop, thereby improving the effectiveness of the heat exchanger.

Figure 1-5 Evaporator

Vertiv I Liebert PEX+ I User Manual

5


1.4.3 Thermal Expansion Valve
The thermal expansion valve with external equalizer can automatically regulate refrigerant
flow according to the operation condition of the refrigeration system to optimize the
performance of the unit in the change of indoor and outdoor temperature.

Figure 1-6 Thermal Expansion Valve

1.4.4 Infrared humidifier
The infrared humidifier consists of infrared humidifier lamp, water injection valve, humidifying
water dish, temperature alarm protection devices and water level alarm device.

The infrared humidifier in the Liebert PEX+ series provides quicker and more responsive
operation which is quite important for mission-critical applications. These humidifiers reduce
the dependency of water quality and simultaneously achieve full capacity in quick time using
almost any wattallation
location of the water detection sensor is shown in Figure 5-1.

Figure 5-1 Recommended location for the water detection sensor

• Before fastening the connection of any mechanical parts or cables, make
sure that the power supply of the control unit has been disconnected.
• Do not use the water detection sensor adjacent to flammable liquid or use it
to detect flammable liquid.
Vertiv I Liebert PEX+ I User Manual

78


5.6 Air Filter
The efficiency of the air filter in the unit is 30%, which complies with US ASHRAE52-76 and
Eurovent 4/5 standards, and the dust resistance value is 90%(EU4 standard). To ensure the
normal operation of the filter, the filter service alarm logic is provided by the controller. The
default fan running time is 2000 hours when the time is exceeded, the filter service alarm is
triggered. The user needs to replace the filter based on the clogging condition of the filter. The
filter must be checked once a month, and be replaced as required during operation.
• Cut the power before replacing the filter.
• Clear the fan running time to ‘0’ after replacing the filter.

5.7 Infrared Humidifier
During the normal operation of the infrared humidifier, sediment such as mineral particles will
accumulate on its water pan. To ensure efficient operation of the infrared humidifier, the

sediment needs to be cleaned regularly. However, the cleansing cycle varies because the
water is different in different regions. It is recommended to check, and cleanse (when
necessary) the water pan, once a month. The auto flush function of the infrared humidifier can
prolong the cleaning cycle. However, regular checks and maintenance are necessary.
Cleaning steps:
1. Remove the water level standpipe to drain the water pan;
2. Disconnect the drainage pipe;
3. Remove the safety switch of the water pan;
4. Remove the fixing screws at the two ends of the pan, and pull out the water pan. Cleanse
the water pan with water and hard brush;
5. Restore the water pan by reversing the preceding procedures
Before exercising the corresponding operation, make sure that the power has
been cut off; also, ensure that the water in the water pan is close to the room
temperature before draining the water from the infrared humidifier water pan to
avoid the personal injury.

Vertiv I Liebert PEX+ I User Manual

79


5.8 Electric Heater
The Electrical heater contains three temperature switches that serially connect to the control
loop. While two of the switches are automatically reset ones, the remaining one is a manual
reset switch.
Figure 5-2 shows a schematic representation of the three switches inside an electric heater:

Figure 5-2 PTC electric reheat

The following steps need to be followed during inspection and maintenance of the Electric

heater:
•
•

•

Check the rust on the electric heater. Use an iron brush to get rid of the rust, if
possible, or replace it if the rustiness is immense or if there is some damage.
When heating is required, but heating is not effective or no heating effect is observed,
a multimeter should be used to check whether the cable connected to the
temperature switch is functioning correctly to ensure that the three temperature
switches are normal.
If the cable is not functioning properly, remove the electric heater and check if the
manual reset switch is disconnected. Next, check the automatic reset switches or the
electric heaterpipe for damage or faulty condition.

Vertiv I Liebert PEX+ I User Manual

80


8

7

LINE
SEE UNIT NAMEPLATE VOLTAGE
3 PHASE
FOR MAIN SUPPLY
WIRE SIZING

SUPPLY

77

TO
MONITORING
SYSTEM

70

58

BK

7-1

BK

7-2

SEE
NOTE
7

2LQR

83

80

1
2
3
4
5
6
7
8
9
10

L3

C2

L2

L1

BK

4-2

BK

96

P

SEE

NOTE
8

84

P

85

P

SEE
NOTE
10

88

P

89

P

95

COMMON
ALARM
2CPAR CONNECTION

94

76
75

ALL FIELD WIRING - SEE NOTE 1

4-3

BK

4-4

BK

R

BR

R

BR

BR

39-2

BL

8-5

44

13-1

R

BK

43

13-2

R

43
42

R

73

R

45-3

BK

43-1

BK

41-4

45-4

BK

43-2

GN/Y

BK
38C 37B

RSD3

BK
RSD1

37

40-9
Q6

39-4

38 BK

FC
BK

13-1

BK

2R3

36-3

BK

BK

BK

8-6

RAD2

BK

P

13-2

8-1

BK

8-2

13-1

56

BK

8-3

BK

8-4

REMOVE WIRES WHEN
R3 IS PRESENT

BR

NOMENCLATURE

SEE NOTE 11

K3

15,20,61,62,63

BK

R3

Q17

52-5

3P RC1,2

30

2

52-2

BR

1

52-3

BL

3

22-5

22-4

HL1

HL1

HS1-4 1H1

HS1-2
HS1-12H1

BK

HL2
HL3

HS1

BK

HL2

HS1-3

3H1

BK

HL3

CCH1

5C1
4C1

GND

COMPRESSOR NO.1

L3

1

BL

3

T4

RS1

36-7

BK

36-5

2

35-1

51-3

BL

3

ECF1,2

VSC1,2

GND

21-1

BK

33-4

BK
DLT2

L2

L2

33-1
BK

BK

36-1

BK

36-6

34-7

BK

RSA

14-1

BK

RSB

7

40

55,57,58

1EM1
35-5

34-9
BK

35-6

34,35,36

45

51-4

BK

33-3

BK

33-5

BK

11-5
11-7

33-8

GN
W

BK

11-6

GY

11-8

50

Q

OPTIONAL
Q10

32-7

BK

C2

10,33,36,46,
47,49,54

BK

32-9
BK
LP1

11-1
11-3

BK

32-8

BK

11-2

W

GY

11-4

L2

25

TO 24

L3

26

TO 51

18

TO 38B

15

TO 37B

6

34

41
49
52

38

B

Q14

32-6

BK

34
56

30
9

65
65
13

60,54
65

WIRING LEGEND
FACTORY SUPPLIED LINE VOLTAGE WIRING

FIELD SUPPLIED LINE VOLTAGE WIRING
FACTORY SUPPLIED 24 VOLT WIRING
FIELD SUPPLIED 24 VOLT WIRING
CONTROL BOARD INTERNAL WIRING - 24 VOLT MAX
WIRING AND DEVICES INCLUDED IN OPTIONS
ELECTRONIC SWITCH (TRIAC) Q1-Q18
INLINE QUICK DISCONNECT
OPEN CONTROL BOARD CONNECTION
PLUG CONNECTION ON CONTROL BOARD

1050 DEARBORN DRIVE
P.O. BOX 2918 6
COL UMBUS, OHIO 43 229
CAGE CODE

OPTIONAL

33-6
BK

(

37

48

33-2

GN

55455

TITL E

C1

8,38,39,40,
41,42,62

BK

W

PHASE FAULT RELAY
CONNECTS TO
MF1 ON 1 BAY UNITS
MF2 ON 2 BAY UNITS

5
26
20

TERMINAL BLOCK CONNECTION ON CONTROL BOARD
TERMINAL STRIP CONNECTION FOR FIELD WIRING
CIRCUIT CONNECTION TO ELECTRONICS
TRIAC GATE CONNECTION
GROUND CURRENT DETECTOR CIRCUIT

55

32-2

BK
BK
HP1

41
37
49
56

PLUG CONNECTION ON FUSE BOARD

G3

BK

BK
DLT1

14

14

G4

H
2EM1

33-9

EIM1 J32
1
2

(

L1

SEE NOTE 17

24,39,40,41
52,53,54

SEE NOTE 20

BK
LP2

45

39
40
34

HS3
35-2

A

60

G2

)
(OPTIONAL)

)

EEV2

EEV1

1 2 1 2 3 4
S2 EEV
1
EIM1 S4
2

7C11

1 2 1 2 3 4
S2 EEV
1
7C12 EIM2 S4
2

DIGITAL SCROLL
THERMISTOR 1

5

DIGITAL SCROLL
THERMISTOR 2

13-4

13-5

12-1

GN

BK

12-2

12-5

GN

BK

12-6

12-3

W

GY

12-4

12-7

W

GY

12-8

13-3

BK

BK

BK

BK

13-6

OPTIONAL

65
DRAWING NO

7C21

7C22

OPTIONAL

4

C

42
13
41

43
16
43

34-2

BK

BK

OPTIONAL

14-2

VSC1,2

BK

28
28
27

EC FAN

LLSV2

HP2

BK

L3

L3
21-2
21-3

RH2

13

32

BK
BR

BK

BK

V

34-5

BK

32-4

T2

20-2

BK

18

25

35

HGBP1/DSV1

Q13

L3

BK

BK

BK

EIM2 J32
1
2

L2

20-1

53-4

BK

BK

32-1

FOR 2 BAY & 3 BAY UNITS
SEPERATE CB FOR REHEAT 2

L1

Q13 -

SEE NOTE 6

33-7

3RH2

L1

30

LLSV1

2RH2

U

SEE
NOTES
1&7

54-4

BK

BK

L1

BK

91

SEE NOTE 16&19

21-2

BK

32-3

BK

Q12

R

92

BK

E1/A in

BK
BK

BK
T3

R

93

BK

OPTIONAL WITH GCD
BK
BR
24DH
24DG
BK
24H
24G

BK 34-3

RH1

BK
DHV
BK

L3

R

W

RS6

HS1

32-5

BK

SDC

BK

HGBP2/DSV2

L2

BK

91

12

38-2

BK

92

2BR
34-8

1

L1

1RH2

8

BK

2

1RH1

3RH1

VARIABLE SPEED CONTROLER
SEE NOTE 17

34-6
W

2RH1

BK

RS5

BK

BK

BR

BK

R

65

RS3

(OPTIONAL)

Q9
L3

R

MAIN FAN 1,2

RS4

34-4

51-2

BK

19,23

1BR

51-1

36-9

Q8

L2

R

60

RS2

BK

OPTIONAL REHEAT 2

GND

Q15

L1

G5
93

RESET

BK

51-5

3C2

55

50 24 90

SEE NOTE 16&19
BR

Ain

BK

2C2

REHEAT 1

5
1
2
3
4

BK
BK
BK
BK

BR

21-1
21-2

BK

40-8

R

BK

BK

34-1

35-7

L3

1C2

BK
BK
BK

BR

SDT

(OPTIONAL)

N
O
I配
T
P选
O机
N
A风
F C
E
C /
E

COMPRESSOR NO.2

W

BK

BK

4C2

45

54-1

54-3

36-4

L2

3C1

5C2

GND

3

54-2

3
2
6

54-5

2C1

BK

CT

BL
BR

L1

CCH2

1
ELECTRICAL REHEAT

BL

53-5

BK
1C1

BK
BK

B

BR

53-3

L2

P

VSC1,2

ECF1,2
BK

1

53-2
L1

BK

E1/A in

BK

2

2

BK

5

52-4

N
O
I配
T
P选
O机
N
A风

F C
C /E
E

W

SD
1

22-2
BK

INFRARED HUMIDIFIER

HL2

R

22-6

53-1

25

BK
BK

22-3

Ain

SEE NOTE 20

CPAR

P

22-1

55
47
50
58
23
17
24

58
50
39
40
41
42
14
13
47
48
52
55
56

60
46
28
27
2
3
9

15,18,20 12,23

BK
BK

Q18

20

G5

BK
OR

38-1

15,19,
61,62,63

36-8

R

BR

BR
K3

LQR

WUF

W

38
60
52
29
30
14
58
50
2
7

15,61,62,63

BR
1CPAR

1LQR

40-7

K11

52-1

17. TERMINALS ONLY FOR FACTORY SUPPLIED.
18. CONNECT THE WIRING TO THE VSC BOARD WHEN THE EC FAN NEED AN EXTE
-RNAL VSC, AND TO THE EC FAN DIRECTLY WHEN NO EXTERNAL VSC NEEDED.
19. CONNECT THE WIRING TO THE VS C BOARD WHEN THE EC FAN NEED AN EXTE
-RNAL VSC, AND TO THE EC FAN DIRECTLY WHEN NO EXTERNAL VSC NEEDED.
20. CONNECT HS1 TO PLUG P35 FOR 20KW UNIT CONNECT HS1 TO INFRARED HUMIDIFIER
FOR 30~100KW UNIT

15

SEE NOTE 19

ECF2

MF

40-6
3BR

36-6

13-2

40-4

55

P

BK

R
40-5

19
42,45

VSC2

40-2

51

CPSS
40-3

38-3

RAD1 (EM1) 50

24

40-1

36-2

BK

R
(KL2)
(KL2)
EC FAN OPTION

BK

1R3

35-4

BK

BK

36-1

ECF1

BK

10

HMV

35-3

Q5

SEE NOTE 6

T5

D

24

E4

BK

BK

5
24,24

E3
E5

GN/Y

SEE NOTE 6

38B

RSD2

SENSOR

E2

6
事项
意
见注

72

41-3

BK

BK

SEE
NOTE
3

OR

SUPPLY
AIR

BR

E1

K3
BK

VSC1

BK

3R3
BR

T6

BL

41

39-3

EARTH GROUND
CONNECTION

A

R

12-6

37C

8-7 BR

OPTIONAL 3 PHASE REMOTE CONDENSER 1, 2

50

12-5

61-8

K11

BK
HTS
BL
HWA

39-1

25

40

61-1

64-8

REMOVE FOR EXTRA RSD TERMINALS

BK

35

41

64-1

41-2

BR

CUSTOMER CONNECTIONS, ALSO SEE LINES 2,3,5,6,13,18,19,20,22,28 & 29
SW2

C

67-6

BK

OR

R

SDT
81
97

EM1

P

R

12-2

42

；

20

R

4-1

SEE NOTE 6

MFAS
OFF ON

R

70A
71A

P

82

15

C1

71

HEAT
REJECTION
DEVICE
CONNECTION

P

59

SEE
NOTE
9

R

65-1

FTS

REMOTE
LIQUITECT
INDICATOR
"OPTIONAL"

13-6

65-4

66-6

CP

67-1

R

GN/Y

D
10

T1
24V

BK
EARTH GROUND
CONNECTION

1
NOTES:

R

12-1

66-1

NEUTRAL

OR

2
44
13-5

65-1

W/OR 65-2

78

3

4
PRIMARY P65 CONNECTION

BK

L3
EARTH

ALTERNATE P65 CONNECTION
SEE NOTE 12

5

BK

L2

FACTORY MOUNTED MAIN UNIT SWITCH

5

6

L1

3

REV

29043251

OPTIONAL

2

1

A00