Scope of Supply
Item 1) 1 x MX PP 1700 NH3
GEA Grasso Ammonia-Liquid Chiller Type MX PP 1700 NH3 (Heat pump application)
High efficient Ammonia liquid Chiller with screw compressor, evaporator and condenser in execution as semi welded heat
exchanger, as a compact complete factory packaged unit, ready for connection on site.
1. Technical data
Cond. 1 Cond. 2 Cond. 3
Refrigerant
Rated cooling capacity
Rated heating capacity
Total electrical consumption (shaft)
R717
2657
3256
599,4
2619
3312
692,8
2542
3377
834,1
kW
kW
kW
Evaporator
Plate heat-exchanger of modular semi welded design; service media ports are completed with flanges and counter
flanges.
With drip tray in stainless steel execution.
Medium
Water (non-corrosive)
Secondary refrigerant inlet temperature
31,0
31,0
31,0
°C
Secondary refrigerant outlet temperature
25,0
25,0
25,0
°C
Secondary refrigerant volume flow
382,8
377,3
366,2
m³/h
Secondary refrigerant NB in/out
200
DN
Design pressure liquid side
16
bar
Design pressure refrigerant side
16
bar
Plate material
AISI 316L
Pressure drop
< 0,5
< 0,5
< 0,5
bar
Sub-Cooler
Plate heat-exchanger of modular semi welded design; service media ports are completed with flanges and counter
flanges.
Medium
Condenser capacity
Cooling medium inlet temperature
Cooling medium outlet temperature
Cooling medium volume flow
Design pressure liquid side
Design pressure refrigerant side
Cassette material
Pressure drop
Water (non-corrosive)
352
259
48,0
48,0
55,5
53,6
40,0
40,0
16
52
AISI 316L
< 0,5
< 0,5
155
48,0
51,3
40,0
kW
°C
°C
m³/h
bar
bar
< 0,5
bar
LT oil cooler
Plate heat-exchanger of modular semi welded design; service media ports are completed with flanges and counter
flanges.
Medium
Condenser capacity
Cooling medium inlet temperature
Cooling medium outlet temperature
Cooling medium volume flow
Design pressure liquid side
Design pressure refrigerant side
Cassette material
Pressure drop
RTSelect Version: 10,0,2
Water (non-corrosive)
34
60
48
48
50,3
52,1
12,5
12,5
16
52
AISI 316L
< 0,5
< 0,5
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63
48
52,4
12,5
kW
°C
°C
m³/h
bar
bar
bar
Printed: 14.06.2019
Scope of Supply
Condenser
Plate heat-exchanger of modular semi welded design; service media ports are completed with flanges and counter
flanges.
Medium
Condenser capacity
Cooling medium inlet temperature
Cooling medium outlet temperature
Cooling medium volume flow
Design pressure liquid side
Design pressure refrigerant side
Cassette material
Pressure drop
Water (non-corrosive)
2492
2464
51,0
59,0
59,0
66,9
266,4
266,4
16
52
AISI 316L
< 0,5
< 0,5
2491
66,9
74,9
266,4
kW
°C
°C
m³/h
bar
bar
< 0,5
bar
HT oil cooler
Plate heat-exchanger of modular semi welded design; service media ports are completed with flanges and counter
flanges.
Medium
Condenser capacity
Cooling medium inlet temperature
Cooling medium outlet temperature
Cooling medium volume flow
Design pressure liquid side
Design pressure refrigerant side
Cassette material
Pressure drop
Water (non-corrosive)
170
301
74,9
74,9
78,6
81,4
40
40
16
52
AISI 316L
< 0,5
< 0,5
397
74,9
83,4
40
kW
°C
°C
m³/h
bar
bar
< 0,5
bar
De-Superheater
Plate heat-exchanger of modular semi welded design; service media ports are completed with flanges and counter
flanges.
Medium
Condenser capacity
Cooling medium inlet temperature
Cooling medium outlet temperature
Cooling medium volume flow
Design pressure liquid side
Design pressure refrigerant side
Cassette material
Pressure drop
Water (non-corrosive)
209
229
74,9
74,9
80,0
80,5
35
35
16
52
AISI 316L
< 0,5
< 0,5
271
74,9
81,6
35
kW
°C
°C
m³/h
bar
bar
< 0,5
bar
Remark:
All heat exchangers are on the water side not connected and need to be connected by the contractor. Also the water
flows and temperatures of the single heat exchangers need to be taken care of the contractor. Control of the unit is
done via a centrally arranged temperature sensor in the common heat carrier pipe.
Please notice that in case of water as secondary refrigerant or cooling media the selection of the plate material of
evaporator and condenser is based on the assumption of a water quality comparable to VDI rule 3803 and a maximum
concentration of Chloride Ions of 200 ppm (evaporator) and 150 ppm (condenser).
If variable flow is required please ensure that suction pressure will not vary faster than 3K/120s. (limit to stop the
chiller automatically). Please include a proper sized buffer tank on secondary refrigerant side!
RTSelect Version: 10,0,2
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Scope of Supply
2. Dimensions
The following values for dimensions, weights and oil charge are preliminary. Final binding data according to the latest version of
the general drawing only.
Length
Width
Height
Oil charge
Refrigerant charge of supplied components
Weight (with motor)
5500
2700
3100
229
253
24600
mm
mm
mm
l
kg
kg
3. General declarations
Deviations in cooling capacity and power input maximum Pe ± 5%, Q0 ±10% and DIN 8976; selection of oil according to GEA
documentation.
The chiller is designed according to the operating conditions written in this document. Intended deviations have to be confirmed
by GEA.
Min ambient temperature
Max ambient temperature
Max elevation
Installation conditions
Recommended oil type
5
°C
40
°C
1000
m
Indoor
Fuchs Reniso Synth 68 oil
(for alternatives see product information)
All performance data refer to a constant volume flow of the secondary refrigerant and cooling medium.
Ammonia quality supplied for our Chiller and heat pumps shall contain 0,3% water in maximum. During all operation time the
water content in the Ammonia used in our chiller shall not exceed 1% of the Ammonia content.
4. Main components
Description of the screw compressor type VR-S28T-52
Screw compressor of the GEA Grasso LT series with adapted variable internal volume ratio and continuous capacity
control.
Scope of supply in detail:
Solenoid valves specification
O-ring material
6 Coils for solenoid valves DC 24V
CR
Electric drive motor
Manufacturer
Number of poles
Degree of protection
Efficiency class
Voltage
Frequency
Drive motor rating
Nominal motor current
Winding Protection
Bearing Temperature
The motor drawing has to be submitted latest with the order.
other
2
IP 55
IE3
690
V ± 5%
50
Hz
1000
kW
1000
A
3 x PT100 Winding temperature
2 x PT100
Wear-free steel laminated coupling with coupling guard
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Scope of Supply
Oil pump
Separate oil pump, mounted on the unit.
Oil pump type
Voltage
Current
Power
Protection class
210
l/min
220-245 V D / 380-420 V Y
8,3
A
4,0
kW
IP 55
Oil filter
Single oil filter with filter fineness 25 micron, stop valves and oil pressure control valve.
Suction filter type SFCT
Combined suction filter and check valve arrangement with filter fineness 140 micron.
Oil separator
Oil separator vertical with fine separation stage. Oil return to the compressor with orifice.
The oil carry-over is < 30 ppm liquid share with GEA PR-OLEO-C-MH68A oil.
With controlled oil heater.
Number of oil heater
Electrical data
Oil level switch for minimum indication (optical)
1
400 V;2 Ph;1000 W
Oil injection control valve
Discharge temperature controlled oil injection valve Oil temperature control
Main valves
Suction side:
1 x Stop valve
1 x Check valve integrated in suction filter
1 x Stop valve
1 x Check valve
Discharge side (after oil separator):
Liquid separator
Vertical pressure vessel to separate gas and fluid phase of the refrigerant.
Insulation cold side
Suction pipe and liquid separator insulated with Armaflex.
The Insulation is designed for 20°C machine room temperature and 70% humidity.
Insulation hot side
Discharge pipe, oil separator, heat exchanger and heat carrier pipes insulated with mineral wool and coated with
Aluminium sheets.
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Scope of Supply
5. Control system GEA Omni™ with control panel
Industrial panel PC.
Implementation of a defined start and stop procedure.
Compressor capacity adjustment according suction pressure / discharge pressure or inlet / outlet temperature secondary
refrigerant / cooling medium or process temperature.
Continuous monitoring and displaying of all important operating data. In case safety limits are exceeded the unit will shut
down. Limitations for high motor current, low suction pressure, high discharge pressure and low outlet temperature (if
available) help to reduce the risk of a complete shut down in case of critical operation conditions.
Automatic vibration monitoring system GEA VTrac™ for screw compressor package with four separate vibration sensors
(two sensors for compressor and two sensors for motor) for timely detection of ball or roller bearings damages. (Longterm wearing processes on bearings cannot be detected with this system. Bearing tolerances as a result of such a
uniform wear must be furthermore measured during the maintenance.)
Physical sequence control with a master (supplied and provided by customer!) is possible by use of hardwired signals or
control via network communication (see communication guideline for details).
All sensors and actuators (stipulated by GEA) are fully wired to the compressor controller.
The touch-screen (installed at eye-level 1,7 m height) and input devices are integrated in a standard enclosure with door.
System control mounted on the package.
Voltage: 3~/400V/50Hz
Control variable
Secondary refrigerant outlet temperature
Display language
English
Protection class
IP 54
Communication via EtherNet/IP or Modbus TCP.
With ProfiNet module for connection to a process control system.
Power feed for oil pump and oil heater integrated in the controller cabinet. Both components are wired to the cabinet.
Set of standard temperature sensors
1 x suction temperature
1 x discharge temperature
1 x oil temperature
1 x Sec. refrigerant outlet (delivered loose)
2 x Motor bearing temperature (with PT100)
3 x Motor winding temperature (with PT100)
Set of standard pressure sensors with stop valve
1 x suction pressure
1 x discharge pressure
1 x oil pressure
1 x oil pressure after filter
Mechanical flow switch for secondary refrigerant (delivered loose).
6. Safety devices
Overflow valve with connection block between discharge and suction side for every compressor.
Overflow valve opening pressure
27,0
bar(g)
Dual safety valve with changeover valve at the liquid separator / evaporator.
Safety valve opening pressure
16
bar(g)
1 x Electronic safety pressure limiter DB1000/2-L with two separate locks.
7. Options (included)
Extra oil filter element.
Evenly spread anti-vibration mounts at the base frame for operation with minimized vibration to the ground.
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Scope of Supply
8. Painting
Paint system according to DIN EN ISO 12944-2/C2 and DIN EN ISO 12944-5/A2.06
Degree of cleanliness
Sa 2 1/2 acc. to DIN EN ISO 8501-1 and
DIN EN ISO 12944-4
A.2.06 DIN EN ISO 12944-5/A.2.06
RAL 5014, pigeon blue
2 K-EP 80 µm
2 K-EP 60 µm
140 µm
Type of coating
Colour
Primer
Top coat
Minimum dry film thickness
9. Approval and certificates
CE certificate for the whole unit acc. Pressure Equipment Directive (PED) 2014/68/EU. Calculated and manufactured
acc. "AD 2000" and EN 378 (H1-Module). Documentation acc. to CE rules.
1 set of approval and certificates allocated on GEA file sharing server.
4 set(s) of approval and certificates as hardcopy.
Language
English
10. Documentation
1 set of documentation allocated on GEA file sharing server.
4 set(s) of documentation as hardcopy.
Language
English
11. Additional Items
1x
Bearing temperature control for suction & discharge side
-single thermo couple II 2G Ex ia IIC T6
12. Packing
Without packing, for transport in closed systems only.
13. Loading
Loading in Berlin or Döllnitz into open top containers or open top trucks is included. When loading in different containers
or transport with different means of transportation, please contact GEA for prices.
14. Factory Remarks
Unit can also be used for the conditions of Item 2
15. Warranty
24 months after commissioning, max. 27 months after delivery.
16. Exclusions from scope of supply
Erection and supervision of erection on site
Water supply and drain piping
Refrigerant and refrigerating oil
Foundations, spare parts and special tools
Frequency inverter
Enclosure (not available)
Discharge pipe at safety-valve (acc. DIN EN378-2)
Power panel cabinet
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