GEA Grasso DX RR 200 User manual

_601011_pi_dxr_gbr_1_.doc 1
Liquid Chiller Grasso DX R
200 ... 1600
Product Information

PRODUCT INFORMATION
LIQUID CHILLER GRASSO DX R
200 ... 1600
2 _601011_pi_dxr_gbr_1_.doc
COPYRIGHT
All Rights reserved. No part of this publication may be copied or published by means of printing, photocopying,
microfilm or otherwise without prior written consent of Grasso. This restriction also applies to the corresponding
drawings and diagrams.
LEGAL NOTICE
This publication has been written in good faith. However, Grasso cannot be held responsible, neither for any
errors occurring in this publication nor for their consequences.

PRODUCT INFORMATION
LIQUID CHILLER GRASSO DX R
200 ... 1600
_601011_pi_dxr_gbr_1_.doc 3
SYMBOLS USED IN THIS MANUAL
Danger!
This is an important warning. Non-observance these warnings can cause accidents with relevant
damages on persons or serious damages on the compressor or refrigerating plant.
Warning!
Attention! Caution! Important!
Hint!
Tip! Note!

PRODUCT INFORMATION
LIQUID CHILLER GRASSO DX R
200 ... 1600
_601011_pi_dxr_gbr_1_.doc 5
TABLE OF CONTENTS
1Function and design............................................................................................................................... 8
2Product range......................................................................................................................................... 9
3Designation .......................................................................................................................................... 12
4Description of Design and Function .................................................................................................... 13
4.1 Structure.................................................................................................................................. 13
4.2 Mode of operation ................................................................................................................. 13
4.3 Shell and tube evaporator...................................................................................................... 13
4.4 Condenser type ....................................................................................................................... 14
4.5 Control unit ............................................................................................................................. 14
4.6 Low voltage Power Panel ....................................................................................................... 14
4.7 safety devices against pressure exceedings............................................................................ 14
4.8 Reduce effects of released Ammonia..................................................................................... 14
4.9 Optional equipment................................................................................................................ 15
4.9.1 Pressure gauge kit....................................................................................................... 15
4.9.2 Dual oil filter ............................................................................................................... 15
4.9.3 Connection flanges ..................................................................................................... 15
4.9.4 Hydraulic Adjustment of theinternal volume ratio (Vi).......................................... 15
4.9.5 L2-Bus communication of compressor control device................................................ 15
4.9.6 Anti-vibration mounting ............................................................................................. 15
5P + I Diagrams ...................................................................................................................................... 16
5.1 P+I diagram for standard ammonia liquid chiller DX series, type RR 200 - RR 350 .............. 16
5.2 P+I diagram for standard ammonia liquid chiller DX series, type LR 200 - LR 350
(VR 200 - VR 350).................................................................................................................... 18
5.3 P+I diagram for standard ammonia liquid chiller DX series, type RR 450 - RR 800 .............. 20
5.4 P+I diagram for standard ammonia liquid chiller DX series, type LR 450 - LR 800
(VR 450 - VR 800).................................................................................................................... 22
5.5 P+I diagram for standard ammonia liquid chiller DX series, type RR 750 - RR 1600 ............ 24
5.6 P+I diagram for standard ammonia liquid chiller DX series, type LR 750 - LR 1600
(VR 750 - VR 1600).................................................................................................................. 26
6Power parameters................................................................................................................................ 28
7Weights and charges - Types RR 200 ... RR 350 .................................................................................. 32
8Weights and charges - Types RR 450 ... RR 800 .................................................................................. 33
9Weights and charges - Types RR 750 ... RR 1600 ................................................................................ 34
10 Modular Control................................................................................................................................... 35
11 Absorption device ................................................................................................................................ 38
11.1 General Information ............................................................................................................... 38
11.2 Functional description............................................................................................................. 38
11.3 Installation............................................................................................................................... 38
11.4 Main dimensions ..................................................................................................................... 39
11.5 Assembly.................................................................................................................................. 40
11.5.1 Positioning................................................................................................................. 40
11.5.2 Table of connecting sleeves...................................................................................... 41
12 Technical Data - Selection table........................................................................................................... 42

PRODUCT INFORMATION
LIQUID CHILLER GRASSO DX R
200 ... 1600
_601011_pi_dxr_gbr_1_.doc 7
TABLE OF FIGURES
fig. 1: Isolator without foundation fixation ................................................................................................ 15
fig. 2: P+I diagram for standard ammonia liquid chiller DX series, type RR 200 - RR 350 ......................... 16
fig. 3: P+I diagram for standard ammonia liquid chiller DX series, type LR 200 - LR 350
(VR 200 - VR 350)............................................................................................................................... 18
fig. 4: P+I diagram for standard ammonia liquid chiller DX series, type RR 450 - RR 800 ......................... 20
fig. 5: P+I diagram for standard ammonia liquid chiller DX series, type LR 450 - LR 800
(VR 450 - VR 800)............................................................................................................................... 22
fig. 6: P+I diagram for standard ammonia liquid chiller DX series, type RR 750 - RR 1600 ....................... 24
fig. 7: P+I diagram for standard ammonia liquid chiller DX series, type LR 750 - LR 1600
(VR 750 - VR 1600)............................................................................................................................. 26
fig. 8: Ammonia liquid chiller - Types RR 200 ... RR 350.............................................................................. 32
fig. 9: Ammonia liquid chiller - Types RR 450 ... RR 800.............................................................................. 33
fig. 10: Ammonia liquid chiller - Types RR 750 ... RR 1600.......................................................................... 34
fig. 11: Display of the Grasso System Conrol (GSC)..................................................................................... 35
fig. 12: Absorption device ABSA, view ........................................................................................................ 40

PRODUCT INFORMATION
LIQUID CHILLER GRASSO DX R
200 ... 1600
8 _601011_pi_dxr_gbr_1_.doc
1 FUNCTION AND DESIGN
Introduction
The Ammonia Liquid Chillers (ALC) Programme for dry evaporation (DX) provides for proven components as
complete refrigeration systems for medium and large refrigeration and/or air conditioning needs.
Generally, these refrigeration systems use ammonia as refrigerant which is characterized by a high regrigeration
capacity, low energy consumption and a beneficial price and which is completely neutral towards the
environment.
Equipped with the Grasso screw compressor series, the DX chiller range covers the refrigeration range of 200 to
1600 kW for cold water.
The performance ranges are determined by 12 type sizes of the screw compressor series
The hole DX chiller programme consists of 3 series with different condenser types working according to principle
of dry evaporation.
Ammonia liquid chillers for dry evaporation (DX chiller) consists of the following main components:
1. Drive-line (screw compressor, driving motor, oil separator)
2. Evaporator with basic frame, carrying the drive-line
3. Condenser, alternative
—built on shell and tube type
—external evaporative condenser or air cooled condenser
4. Low-voltage supply with control unit
DX chiller can be delivered in version RR for complete capacity range of model types 200 - 1600 as standard ready
for connecting, complete with pipes and wiring.
The complete combination of drive line and evaporator can be delivered for versions LR and VR, so that the
condenser only have to connect on site.
The DX chillers are designed according to the 3 different concepts of Grasso screw compressors.
Because of that compact designed DX chiller carried out.
The standard model types valid for the named conditions (see overview - cold water 12°C/ 6°C and cooling water
26°C/ 32°C).
Each model size can be delivered with exact adapted evaporators and condensers deviating of standard as well as
with different secondary refrigerants and cooling mediums.
These special models require changes concerning the standard dimensions.
You'll find defined power parameters as selection tables in this product information. These table values serve for a
first model type selection. For the concrete application field the values have to confirm by Grasso.
Ammonia liquid chiller DX types are eqipped with a standard PLC (control device).
A background illumination LCD display allows reading of all operating and fault messages as well as process variables.
The display is operated via a robust keypad having 6 function and 24 system keys..
Each DX chiller can optionally be equipped with an absorption device for additional safety in case of havary.
The use of the absorption facility depends upon the installation conditions of the DX chiller and the design of the
machine room and ought to be checked in each individual case taking into account the relevant provisions.
The DX chillers are delivered with a dry nitrogen charge (0.5 bar g.p.).
Refrigerant and special refrigeration oil are included in scope of supply.
A user manual with description of refrigeration circuit, and instructions for commissioning, operating and
maintenance are belonging to each DX chiller supply.
For detailed informations regarding screw compressors see separate product informations.

PRODUCT INFORMATION
LIQUID CHILLER GRASSO DX R
200 ... 1600
_601011_pi_dxr_gbr_1_.doc 9
2 PRODUCT RANGE
Basis for chiller series: Screw compressor series
Screw compressor
SH Series
Screw compressor
MC Series
Screw compressor
LT Series
Screw compressor: 4 types: C, D, E, G
Vth = 231 ... 375 m3/h
4 types: H, L, M, N
Vth = 450 ... 690 m3/h
4 types: P, R, S, V
Vth = 805 ... 1,640 m3/h
Chiller design: DX
Series: RR LR VR
Working principle: dry evaporation
Condenser types:
water cooled shell and
tube heat exchanger
R
air cooled condenser
L
evaporative condenser
V
Evaporator type:
R
shell and tube heat
exchanger
R
shell and tube heat
exchanger
R
shell and tube heat
exchanger
The DX chiller series consists of 12 model types with established Grasso screw compressors.
The capacity range covers from 200 kW up to 1600 kW regarding air conditioning application for manufacturing
cold water.
The only used refrigerant is ammonia.
The working principle is the dry evaporation with shell and tube heat exchangers as evaporator and condenser.
Only a very small refrigerant content is required for all models of this series complying with the highest safety and
environmental standards.
The standard RR Chiller is complete factory-assembled, with electric and tube lines and a l.v. switching station.
The complete combination of drive line and evaporator can be delivered for versions LR and VR.
The condenser has to be connected on site.

PRODUCT INFORMATION
LIQUID CHILLER GRASSO DX R
200 ... 1600
10 _601011_pi_dxr_gbr_1_.doc
Series RR - overview
Chiller Type: Compressor Chiller capacity (kW) 1Motor nom. capacity (kW)
RR 200 C 191 55
RR 250 D 227 75
RR 300 E 272 75
RR 350 G 322 90
RR 450 H 411 110
RR 500 L 485 132
RR 600 M 615 160
RR 750 N 748 200
RR 800 P 798 200
RR 1000 R 966 250
RR 1200 S 1198 315
RR 1600 V 1547 355
Series LR - overview
Chiller Type: Compressor Chiller capacity (kW) 2Motor nom. capacity (kW)
LR 200 C 187 75
LR 250 D 221 75
LR 300 E 265 90
LR 350 G 314 110
LR 450 H 402 132
LR 500 L 474 160
LR 600 M 601 200
LR 750 N 731 250
LR 800 P 787 250
LR 1000 R 945 315
LR 1200 S 1171 355
LR 1600 V 1506 450
1water outlet evaporator 6°C, water outlet condenser 32°C
2water outlet evaporator 6°C, condensing temperature 50°C