Vertiv Liebert CRV+ Series Air Conditioner User manual

Vertiv
Brand
Vertiv
Model
Liebert CRV+ Series Air Conditioner
Category
Split-system air conditioners
Type
User manual
Liebert CRV+ Series Air Conditioner
User Manual
Version V1.0
Revision date November 11, 2013
BOM 31012977
Emerson Network Power provides customers with technical support. Users may contact
the nearest Emerson local sales office or service center.
Copyright © 2013 by Emerson Network Power Co., Ltd.
All rights reserved. The contents in this document are subject to change without notice.
Emerson Network Power Co., Ltd.
Address: No.1 Kefa Rd., Science & Industry Park, Nanshan District 518057, Shenzhen
China
Homepage: www.emersonnetworkpower.com.cn
E-mail: [email protected]
Contents
Chapter 1 Overview ............................................................................................................................................................ 1
1.1 Model Description ................................................................................................................................................. 1
1.2 Refrigerant Requirement ....................................................................................................................................... 1
1.3 Product Introduction .............................................................................................................................................. 2
1.4 Product Appearance ............................................................................................................................................. 2
1.5 Main Components Of Indoor Unit.......................................................................................................................... 3
1.6 Environmental Requirements ................................................................................................................................ 4
1.6.1 Operation Environment .............................................................................................................................. 4
1.6.2 Storage Environment ................................................................................................................................. 4
Chapter 2 Mechanical Installation ....................................................................................................................................... 5
2.1 Movement, Unpacking And Inspection .................................................................................................................. 5
2.1.1 Transportation And Movement .................................................................................................................. 5
2.1.2 Unpacking .................................................................................................................................................. 5
2.1.3 Inspection .................................................................................................................................................. 6
2.2 Installation Notes .................................................................................................................................................. 6
2.3 System Installation Arrangement .......................................................................................................................... 7
2.3.1 Overall System Arrangement ..................................................................................................................... 7
2.3.2 System Installation Illustration ................................................................................................................... 7
2.3.3 Mechanical Parameters ............................................................................................................................. 8
2.4 Installing Indoor Unit ........................................................................................................................................... 11
2.4.1 Equipment Room Requirement ............................................................................................................... 11
2.4.2 Installation Space .................................................................................................................................... 11
2.4.3 Installation Procedures ............................................................................................................................ 12
2.5 Piping .................................................................................................................................................................. 14
2.5.1 Connecting Air-Cooled Unit Pipe ............................................................................................................. 14
2.5.2 Charging Refrigerant And Adding Refrigerant Oil .................................................................................... 17
2.6 Removing Transportation Fastener And Vibration Absorber ............................................................................... 18
2.7 Installation Inspection ......................................................................................................................................... 19
Chapter 3 Electrical Installation ......................................................................................................................................... 20
3.1 Task Introduction ................................................................................................................................................ 20
3.2 Connecting Cables Of Indoor Unit ...................................................................................................................... 20
3.2.1 Electrical Port Location Of Indoor Unit ..................................................................................................... 20
3.2.2 Connecting Power Cable Of Indoor Unit .................................................................................................. 21
3.2.3 Connecting Control Cable........................................................................................................................ 22
3.2.4 Connecting Solenoid Valve Of Pipe Extension Kit (Option For Site Installation) ..................................... 23
3.3 Installation Inspection ......................................................................................................................................... 24
Chapter 4 System Power-On Commissioning ................................................................................................................... 25
4.1 Location Of MCBs ............................................................................................................................................... 25
4.2 Power-On Commissioning Of Air-Cooled Series Unit ......................................................................................... 25
4.2.1 Preparation Before Commissioning ......................................................................................................... 25
4.2.2 Commissioning Procedures ..................................................................................................................... 26
4.2.3 Inspection After Commissioning .............................................................................................................. 27
Chapter 5 Micro-Processing Controller ............................................................................................................................. 28
5.1 Feature ............................................................................................................................................................... 28
5.2 Appearance ........................................................................................................................................................ 28
5.3 LCD Screen ........................................................................................................................................................ 28
5.4 Control Button ..................................................................................................................................................... 29
5.4.1 Function Descriptions .............................................................................................................................. 29
5.4.2 Operation Example .................................................................................................................................. 29
5.5 Control Screen .................................................................................................................................................... 30
5.5.1 ON Screen ............................................................................................................................................... 30
5.5.2 Normal Screen ......................................................................................................................................... 30
5.5.3 Password Screen .................................................................................................................................... 31
5.6 Menu Structure ................................................................................................................................................... 31
5.6.1 Main Menu ............................................................................................................................................... 31
5.6.2 Alarm Menu ............................................................................................................................................. 32
5.6.3 Temp&Hum Set ....................................................................................................................................... 35
5.6.4 System State ........................................................................................................................................... 36
5.6.5 System Set .............................................................................................................................................. 38
5.6.6 Help Menu ............................................................................................................................................... 40
5.6.7 Display Set .............................................................................................................................................. 41
Chapter 6 System Operation And Maintenance ................................................................................................................ 42
6.1 System Self-Diagnosing Test .............................................................................................................................. 42
6.1.1 Self-Diagnosing Functions ....................................................................................................................... 42
6.1.2 Electric Control Part ................................................................................................................................. 42
6.2 Dust Filter ........................................................................................................................................................... 43
6.3 Fan Kit ................................................................................................................................................................ 43
6.4 Electrode Humidifier ............................................................................................................................................ 44
6.5 Electrical Heater .................................................................................................................................................. 46
6.6 Drain System ...................................................................................................................................................... 46
6.7 Refrigerating System .......................................................................................................................................... 46
6.7.1 Suction Pressure ..................................................................................................................................... 46
6.7.2 Discharge Pressure ................................................................................................................................. 46
6.7.3 Electronic Expansion Valve ..................................................................................................................... 47
6.7.4 Air-Cooled Condensor ............................................................................................................................. 47
6.7.5 Compressor ............................................................................................................................................. 47
Chapter 7 Troubleshooting ................................................................................................................................................ 49
Appendix 1 Circuit Diagram ............................................................................................................................................... 53
Appendix 2 Menu Structure Of Micro-Processing Controller ............................................................................................. 55
Appendix 3 Alarm Control Menu Table.............................................................................................................................. 57
Appendix 4 Parameter Setting Table ................................................................................................................................ 58
Chapter 1 Overview 1
Liebert CRV+ Series Air Conditioner User Manual
Chapter 1 Overview
The Liebert CRV+ series precision air conditioner is a professional device, applicable to occasions inaccessible to
general public.
This chapter introduces the Liebert CRV+ series air conditioner on its model description, refrigerant requirement,
product introduction, appearance, main components of indoor unit and requirements on operation and storage
environment.
1.1 Model Description
The model description of the Liebert CRV+ series air conditioner is shown in Figure 1-1.
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
C R 0 2 5 H A 1 3 8 0 S 0 2 E 1 0 0 0 0 P V 0 0 0
Series name
Description 15 Coil and valve
CR Liebert CRV+ E Standard
DX air-cooled coil, electronic expansion valve
Refrigeration capacity 16 Cabinet color
Nominal refrigeration capacity 1 Standard volor (Z-7021 black-grey)
6 Air supply mode 17 High voltage option
R Horizontal air supply with guide grill 0 None
H Horizontal air supply without guide grill 18 Low voltage locking option
7 System type 0 None
A Air cooling H Heating and humidification locking
8 Fan 19 Monitoring
1 EC fan 0 None
9 Power supply type S
SIC card
3 380V ~ 415V/3ph/50Hz+N 20
Detector
10 System configuration 0 None
8 R-410A DC brushless scroll compressor H Fire sensor
11 Humidifier S Smoke sensor
0 None F Fire sensor + smoke sens or
S Steam humidifier 21 Package
12 Display P Domestic
S Standard display panel C Overseas (seaworthy)
L Large display panel 22 Special function
13 Heating A None
0 None V With condensate drain pump
1 Electric heater 23 ~ 25 Special identifier for order
14 Filter
2 G4 (EU4)
0 G4 (EU4) + Filter pressure difference switch
1 ~ 2
3 ~ 5
0 2 5
Figure 1-1 Model description
1.2 Refrigerant Requirement
Low quality or counterfeit refrigerant will damage the system severely. Please use the refrigerant approved by
Emerson Network Power Co., Ltd. For the system abnormity or damage caused by using low quality refrigerant, the
warranty will be invalid.
The refrigerant brands approved by Emerson Network Power Co., Ltd include:
DU PONT ( ):The DU PONT refrigerant adopts Emerson custom-made package.
JUHUA ( )
Warning
Please do not use low quality refrigerant. For any result caused by using low quality refrigerant, the warranty will be invalid.
2 Chapter 1 Overview
Liebert CRV+ Series Air Conditioner User Manual
1.3 Product Introduction
The Liebert CRV+ series air conditioner is a medium and small size precise environment control system, applicable to
environment control in medium and small size equipment room, modularized machine room and machine room of
high heat density with need of saving energy. It can maintain a favorable running environment for precise devices
such as sensitive devices, industry process devices, communication devices and computers.
The Liebert CRV+ series air conditioner features high reliability, high sensible heat ratio and large airflow. An
electrode humidifier is configured and R410A environment-friendly refrigerant is used, to meet the requirements on
environment friendly refrigerant internationally.
The unit is an air-cooled single cooling system, that is, compressor refrigeration system. The system is configured
with DC speed regulation back-inclined centrifugal fan (EC fan for short).
The Liebert CRV+ series air conditioner consists of an indoor unit and an outdoor unit. The Liebert CRV+ condenser
is standard configuration, and it can reduce noise pollution to environment to greatest extent on the base of satisfying
system cooling requirement, and improve reliability of operation.
1.4 Product Appearance
The appearance of the Liebert CRV+ series air conditioner is shown in Figure 1-2.
CR025RA138 CR035RA138
Figure 1-2 Appearance of the air conditioner
Chapter 1 Overview 3
Liebert CRV+ Series Air Conditioner User Manual
1.5 Main Components Of Indoor Unit
The indoor unit of the Liebert CRV+ series air conditioner consists of DC brushless compressor, evaporator,
electronic expansion valve, electrode humidifier, EC fan, electric heater, sight glass, filter dryer, micro-processing
controller and so on.
Compressor
Adopt a DC brushless scroll compressor. It features low vibration, low noise and high reliability.
Evaporator
Adopt a fin-tube heat exchanger with high efficiency. The distributor is designed and verified according to individual
model to ensure that the refrigerant is distributed evenly in each loop, improving the efficiency of the heat exchanger
to a great extent.
Electronic expansion valve
Adopt an electronic expansion valve. It collects temperature and pressure signals at the same time to accurately
regulate the refrigerant flow.
Fan
Adopt an EC fan. It features high efficiency, energy saving, space saving and low noise.
Electric heater
Adopt a PTC heater. It features quick heating, even quantity of heat, operation safety and reliability.
Sight glass
The sight glass is the window of the system cycle, for observing the refrigerant state, mainly the moisture content of
the system. When the moisture content exceeds the standard, the color will be changed.
Filter drier
The filter drier can effectively eliminate the moisture in the system and filtrate the impurities generated during
long-term system operation so as to ensure the normal system operation.
Micro-processing controller
The Liebert CRV+ series air conditioner uses EMERSON micro-processing controller which adopts advanced PID
regulating technology. The micro-processing controller adopts the LCD screen with blue backlight (small board: white
backlight; large board: blue backlight) and 240 × 128 dots (small board: 128 × 44; large board: 240 × 128). The user
interface operation is simple. The multi-level password protection can effectively prevent illegal operation. It also
provides power failure auto-restoration function and high/low voltage protection function. The operation time of
components is available through the menus. The expert-level fault diagnosis system can automatically display the
current fault information, facilitating the maintenance. It can store up to 200 historical event records. An RS485 port is
configured, and Modbus protocol is used. The panel of the micro-processing controller is shown in Figure 1-3.
Run indicator Alarm indicator ESC button
Enter button
On/off buttonDisplay panel
Up button
Down button
Figure 1-3 Panel of micro-processing controller
4 Chapter 1 Overview
Liebert CRV+ Series Air Conditioner User Manual
Remote Monitoring Software
The Liebert CRV+ series air conditioner adopts Modbus protocol. Through the configured RS485 port or TCP/IP port,
the Liebert CRV+ system can communicate with the host computer and receive the control of the host software.
1.6 Environmental Requirements
1.6.1 Operation Environment
See Table 1-1 for details.
Table 1-1 Operation environment requirement
Item Requirement
Ambient temperature Indoor 18°C ~ 40°C
Outdoor -34°C ~ +45°C
Protection level (indoor unit) IP20
Altitude < 1000m. Above that, please contact Emerson Network Power Co., Ltd.
Operation voltage range (380 ~ 415)V ± 10%), 3N ~ 50Hz
1.6.2 Storage Environment
See Table 1-2 for details.
Table 1-2 Storage environment requirement
Item Requirement
Storage environment No protection against weather
Ambient humidity < 95%RH
Ambient temperature -33°C ~ +70°C
Storage time Total transportation and storage time should not exceed six months. Otherwise, the performance
needs to be re-calibrated
Chapter 2 Mechanical Installation 5
Liebert CRV+ Series Air Conditioner User Manual
Chapter 2 Mechanical Installation
This chapter introduces the mechanical installation of the Liebert CRV+ series air conditioner, including transportation,
movement, unpacking, inspection, installation notes, system installation arrangement, installing indoor unit, installing
unit pipes, removing transportation fastener and vibration-absorber, and installation inspection.
2.1 Movement, Unpacking And Inspection
2.1.1 Transportation And Movement
Railroad transportation and shipping are the recommended means of transportation. If truck transportation is
unavoidable, choose roads that are less bumpy to protect the equipment.
The Liebert CRV+ series air conditioner is heavy (see Table 2-1 for the weight). It is recommended to use mechanical
handbarrow such as an electric forklift to unload and move the equipment to the place closest to the installation site.
If a forklift is used, insert the tines of the forklift below the pallet, as shown in Figure 2-1. Align the tines with the
center of gravity to prevent the equipment from falling over.
Figure 2-1 Inserting and moving
When moving the indoor unit, keep the obliquity within the range from 75° to 105°, as shown in Figure 2-2.
105
75
Figure 2-2 Moving obliquity
2.1.2 Unpacking
The cabinet uses packing of honeycomb cardboard and winding stretch film. Move the product to the place closest to
the final installation site before unpacking the unit.
Follow the procedures below to unpack the unit:
1. First remove the top cover and the winding stretch film, and then remove the honeycomb cardboard, as shown in
Figure 2-3.
6 Chapter 2 Mechanical Installation
Liebert CRV+ Series Air Conditioner User Manual
Top cover
1. Remove
the top
cover .
2. First
remove the
winding
stretch film,
and then
remove the
honeycomb
cardboard.
Honeycomb
cardboard
Honeycomb
cardboard
Figure 2-3 Unpacking the outer package
2. Removing the pallet.
The unit is fixed onto the packing pallet with M8 × 20 and M8 × 80 screws, as shown in Figure 2-4. You can use
17mm open-end spanner, ratchet spanner or sleeve to remove the screws.
Hexagon head bolt
GB/T 5782-2000_M8
×
80
Screw GB9074_13-88_M8
×
20
Figure 2-4 Screws on pallet
2.1.3 Inspection
After unpacking the product, check against the packing list that the fittings are complete and that the components are
intact. If any parts are found missing or damaged, please report to the carrier immediately. If any covert defects are
found, please report to the carrier and the local office of the distributor.
2.2 Installation Notes
To realize the designed performance and maximize the product life, correct installation is vital. This section should be
applied in conjunction with the prevailing industry standards of mechanical and electrical installation.
1. The Liebert CRV+ series air conditioner is designed for split floor installation. The indoor unit must be installed on
the floor of the equipment room or computer room, and the outdoor unit can be installed outdoors or on the floor of
other rooms.
2. Before the installation, make sure that the installation environment meets the requirements (see 1.6
Environmental Requirements) and confirm whether the building needs to be transformed to accommodate the
construction work of piping, wiring and ventilation ducts.
3. Follow the design drawings strictly when installing the equipment, and reserve space for daily maintenance and
service. The manufacturer’s engineering dimension drawings can be served as a reference.
Chapter 2 Mechanical Installation 7
Liebert CRV+ Series Air Conditioner User Manual
2.3 System Installation Arrangement
2.3.1 Overall System Arrangement
The overall system arrangement of the Liebert CRV+ series air conditioner is shown in Figure 2-5.
Discharge temperature sensor
Check valve
Check valve
Ball valve
Traps* (Every
7.5m of
vertical lift)
Scroll compressor
Discharge line
High pressure
switch
Suction line
Suction
temperature
sensor
Sight glass
Filter drier
Distributor
Evaporator
coil
Condenser coil
Check
valve+
Low pressure sensor
Check
valve
Ball valve High pressure sensor
Check valve
Check valve
Figure 2-5 Overall system arrangement
Note
1. For the sake of convenience, the single system is used as an example to describe the double system.
2. : Factory piping.
3. : Field piping (by technical personnel).
4. *: These components are not supplied by Emerson, but are recommended for normal circuit operation and maintenance.
5. +: These components are required to add in field when the pipe equivalent length exceeds 30m.
2.3.2 System Installation Illustration
The unit installation mode is shown in Figure 2-6 and Figure 2-7.
8 Chapter 2 Mechanical Installation
Liebert CRV+ Series Air Conditioner User Manual
Note
1. When the condenser is installed higher than the compressor (see Figure 2-6), a back bend should be fitted on the discharge pipe
and liquid pipe of the condenser, to avoid refluence of liquid refrigerant upon stopping.
2. When installing the back bend, ensure that the top end of the back bend is installed higher than the highest copper pipe of the
condenser.
Back bend (must be higher than the
highest copper pipe of the condenser)
Heat insulation floor Floor
Sealed
Raised floor
Humidifier
water in
Condensed
water out
Indoor unit
Liquid line (avoid exposure to direct sunlight)
Trap
Slope discharge
Max. 7.5m
Max. 30m
Outdoor unit
Figure 2-6 Condenser installed higher than compressor
Heat insulation floor Floor
Sealed Raised floor
Humidifier
water in
Condensed
water out
Indoor unit
Slope liquid
Min. 8m
Slope
discharge
Outdoor unit
Figure 2-7 Compressor installed higher than condenser
2.3.3 Mechanical Parameters
Indoor unit
The mechanical parameters of the indoor unit are shown in Figure 2-8 and Table 2-1.
Chapter 2 Mechanical Installation 9
Liebert CRV+ Series Air Conditioner User Manual
H
W
D
Figure 2-8 Mechanical parameters of indoor unit (unit: mm)
Table 2-1 Mechanical parameters of indoor unit
Model Dimensions (W × D × H) (mm) Net weight (kg)
CR025 300 × 1100 × 2000 270
CR035 600 × 1100 × 2000 350
Base plate pipe outlet locations & dimensions
The locations of the pipe inlets and outlets on the unit base plate are shown in Figure 2-9. See Table 2-2 for their
dimensions.
a
b
c
gf
A
B
C
D
E
d
eA: Drain hole
B: Liquid pipe hole
C: Discharge pipe hole
D: Cable entry hole
E: Water inlet hole
Figure 2-9 Locations of base plate pipe outlet
Table 2-2 Locations and dimensions of base plate pipe outlet (unit: mm)
Dimension
Model a b c d e f g
CR025 80 80 50 115 45 182 99
CR035 48 62 45 127 49 277 210
10 Chapter 2 Mechanical Installation
Liebert CRV+ Series Air Conditioner User Manual
Top plate pipe outlet locations & dimensions
The locations of the pipe inlets and outlets on the unit top plate are shown in Figure 2-10. See Table 2-3 for their
dimensions.
a
b
c
CR035
f
A
B
C
D
E
g
e
A: Water inlet hole B: Drain hole C: Liquid pipe hole
D: Discharge pipe hole E: Cable entry hole 1 F: Cable entry hole 2
a
b
c
gf
A
B
C
D
E
d
e
F
CR025
Figure 2-10 Locations of top plate pipe outlet
Table 2-3 Locations and dimensions of top plate pipe outlet (unit: mm)
Dimension
Model a b c d e f g
CR025 40 80 40 125 100 45 105
CR035 37.5 47.5 71 233 137 153 119
Front air outlet locations & dimensons
The front air outlet locations & dimensions are shown in Figure 2-11.
1895
550 250
CR025CR035
1895
Figure 2-11 Front air outlet locations & dimensions (unit: mm)
Chapter 2 Mechanical Installation 11
Liebert CRV+ Series Air Conditioner User Manual
Note
To prevent damage of power cable, the cable entry hole is fitted with bushing for protection.
2.4 Installing Indoor Unit
2.4.1 Equipment Room Requirement
The requirements on the equipment room are as follows:
1. Damp proof and heat preservation work must be well done to make sure that the environment control system in the
air conditioner room can operate normally.
2. The equipment room should have good heat insulation and sealed damp proof layer. The damp proof layer of the
ceiling and walls must use polyethylene film or damp proof coating.
3. The outdoor air that enters the equipment room should be reduced to a minimum, better below 5% of the total
indoor airflow, as it may increase the load of heating, cooling, humidifying and dehumidification of the system.
4. All the doors and windows should be closed and the openings should be as narrow as possible.
Note
The Liebert CRV+ series air conditioner is a professional device, and the indoor unit is prohibited to be used in an open atrocious
outdoor environment.
2.4.2 Installation Space
The Liebert CRV+ series air conditioner is a set of full-featured steam compressor refrigerating air-cooled unit. It is
recommended to be installed in a row of cabinets with high heat density and ‘hot aisle & cold aisle’ arrangement.
Maintenance space requirement
In normal condition, leave more than 600mm of maintenance space at the front and the rear of the air condition unit,
as shown in Figure 2-12.
1945
600
600
Figure 2-12 Maintenance space of the unit (unit: mm)
12 Chapter 2 Mechanical Installation
Liebert CRV+ Series Air Conditioner User Manual
Table 2-4 Minimum maintenance space (unit: mm)
Location CR025 CR035
Front 600 600
Rear 600 600
Note: the space is used for regular maintenance, such as replacing filter, fan, electrode humidifier and so on
2.4.3 Installation Procedures
The Liebert CRV+ air conditioner is used between racks, and at least one side of it is adjacent to server cabinet.
Levelling the cabinet
After all components of the cabinet have been installed, you need to level the cabinet.
The procedures for levelling the cabinet are as follows:
1. Place the cabinet on an open ground.
2. Use a moveable wrench to loosen the fixing nuts on the four feet bolts (see Figure 2-13) clockwise in sequence.
3. Rotate the hexagon bolts on the bottom of the feet clockwise or counter clockwise till the feet rises or drops to an
optimal position, and use a gradienter to ensure that the cabinet is in a level state, as shown in Figure 2-13.
.
Closkwise
Hexagon bolt
Fixing nut
Counter closewise
or clockwise
The feet rise or drop
Figure 2-13 Levelling the cabinet
4. Screw down the fixing nuts on the feet bolts counter clockwise, and the levelling is finished.
If the machine room has mounting bracket, and its width does not exceed 30mm, you need to remove the feet and fix
the cabinet onto the mounting bracket.
Removing feet and fixing cabinet
Note
To avoid personal injury and cabinet damage, two persons are required to perform the operation together.
1. Remove the feet:
1) Use a moveable wrench to loosen the fixing nuts on the four feet bolts clockwise in sequence.
2) Rotate the hexagon bolts on the bottom of the feet clockwise till the feet drops from the cabinet frames.
2. Fix the cabinet:
The cabinet provides two holes (diameter: 10mm) respectively on its top, bottom, front and rear, as shown in
Figure 2-14. Install bolts in the four bottom holes to fix the cabinet onto the floor bracket of the machine room, and
install bolts in the four top holes to connect the cabinet with the top bracket of the machine room.
Chapter 2 Mechanical Installation 13
Liebert CRV+ Series Air Conditioner User Manual
Top fixing hole
Top fixing hole
Bottom fixing hole
Bottom fixing hole
Figure 2-14 Fixing holes of cabinet
Cabinet connection
The cabinet connectors are provided in accessories. You can connect the unit with adjacent cabinets through the
cabinet connectors.
Note
Before connecting the cabinet, please level the cabinet first. Refer to Levelling The Cabinet in this section for the method.
Procedures for connecting the cabinet:
1. Loosen the fixing screw of the cabinet connector on the cabinet frame, and rotate the cabinet connector 90° to
horizontal position, as shown in Figure 2-15.
Cabinet
connector
Cabinet
connector
Figure 2-15 Rotating the cabinet connector
2. Use the provided M5 countersunk head screws to fix the cabinet connector in the installation holes on the cabinet
frame, as shown in Figure 2-16. When connecting the racks without using the split plate, use the installation holes of
the cabinet connector to connect the racks.
14 Chapter 2 Mechanical Installation
Liebert CRV+ Series Air Conditioner User Manual
A
A amplified
Cabinet connector
Installation
hole
M5 countersunk
head screw
Figure 2-16 Schematic diagram for connecting the cabinet
3. Install the other three cabinet connectors according to the same method.
2.5 Piping
2.5.1 Connecting Air-Cooled Unit Pipe
All joints of the cooling pipes must be silver-brazed. Standard industry procedures must be followed in selecting,
laying, and fixing the pipes, and vacuuming the system and charging refrigerant. Take pipeline pressure drop, oil
return to the compressor and minimization of noise and vibration into consideration during design and construction.
General
The recommended pipe sizes are ‘equivalent lengths’ (see Table 2-6 for equivalent lengths of partial components),
with the resistance caused by bends taken into account. The installer should confirm that the sizes are appropriate for
the site conditions.
1. If the one-way equivalent length exceeds 30m, or if the vertical distance between indoor unit and outdoor unit
exceeds the values in Table 2-5, consult Emerson before the installation to confirm whether a pipe extension kit is
needed.
Table 2-5 Vertical distance between indoor unit and outdoor unit
Relative position Value
Outdoor unit higher than indoor unit Max.: +30m
Outdoor unit lower than indoor unit Max.: -8m
2. The pipe sizes recommended in Table 2-6 are ‘equivalent lengths’, with the resistance caused by bends and valves
taken into account. The installer should confirm that the sizes are appropriate for the site conditions.
Table 2-6 Equivalent lengths of partial components
Outer Diameter (OD) of
liquid pipe (inch)
Equivalent length (m)
90° bend 45° bend T type three-way
3/8 0.21 0.10 0.76
1/2 0.24 0.12 0.76
5/8 0.27 0.15 0.76
3/4 0.3 0.18 0.76
7/8 0.44 0.24 1.1
1-1/8 0.56 0.3 1.4
Note
A trap should be installed for every 7.5m of vertical distance. Please consult Emerson for details.
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36
  • Page 37 37
  • Page 38 38
  • Page 39 39
  • Page 40 40
  • Page 41 41
  • Page 42 42
  • Page 43 43
  • Page 44 44
  • Page 45 45
  • Page 46 46
  • Page 47 47
  • Page 48 48
  • Page 49 49
  • Page 50 50
  • Page 51 51
  • Page 52 52
  • Page 53 53
  • Page 54 54
  • Page 55 55
  • Page 56 56
  • Page 57 57
  • Page 58 58
  • Page 59 59
  • Page 60 60
  • Page 61 61
  • Page 62 62
  • Page 63 63
  • Page 64 64
  • Page 65 65
  • Page 66 66
  • Page 67 67

Vertiv Liebert CRV+ Series Air Conditioner User manual

Vertiv
Brand
Vertiv
Model
Liebert CRV+ Series Air Conditioner
Category
Split-system air conditioners
Type
User manual
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents