1. VARISPEED Reciprocating Compressors
BITZER information –
VARISPEED Reciprocating Compressors
Germany, 23th of November 2010

2. Topic
VARISPEED
Enlargement product range
Features
Availiability

3. OCTAGON VARISPEED Example for a conventional system:
Four compressors in On/Off operation without inverter
Get operation cost savings
with inverter; to= constant

4. OCTAGON VARISPEED F1 F1..F4 inverters have: F3 + F4
Inverter designation F1 F3 F4
Existing Model
Higher
Inverter
Output current F1
Inverter
housing
F1..F4 inverters have:
/ Same wiring logic:
Run signal, alarm relay ...
/ Same control signals:
4..20mA or 0..10V
New Model
F3 + F4
Inverter
housing

5. OCTAGON VARISPEED R404A R134a C4 Compressors (4V-4N)
R404A : Bigger inverter (F4) + Standard Comp. (Motor 1) -> 4NCS-20.F4Y
R134a: Smaller inverter (F3) + ECOLINE Comp. (Motor 2) -> 4NES-12.F3Y

6. OCTAGON VARISPEED Product range enlargement (red):
R404A, R507A , R407C, R22
R134a
VARISPEED
Max. Cooling
Capacity*
2DC-3.F1Y
10,8 kW
4FC-5.F1Y
14,6 kW
4EC-6.F1Y
18,4 kW
4DC-7.F3Y
21,9 kW
4CC-9.F3Y
26,7 kW
4VCS-10.F4Y
28,3 kW
4TCS-12.F4Y
34,3 kW
4PCS-15.F4Y
41,2 kW
4NCS-20.F4Y
47,6 kW
VARISPEED
Max. Cooling
Capacity*
4DC-7.F1Y
13,2 kW
4CC-6.F1Y
15,9 kW
4VES-6.F3Y
16,4 kW
4TES-8.F3Y
19,6 kW
4PES-10.F3Y
23,0 kW
4NES-12.F3Y
26,6 kW
* 87Hz ; SST=-10°C; SDT=+45°C;
20°C suction gas temp. ; without liquid subcooling

7. VARISPEED CO2 Product launch:
OCTAGON VARISPEED CO2 transcritical application
VARISPEED
CO2
Max. Cooling
Capacity*
4MTC-10.F4K
22,3 kW
4KTC-10.F4K
33,3 kW
* 87Hz; to=-10°C; tGC=+35°C; pHP=90bar; Dtoh=10K

8. OCTAGON VARISPEED New VARISPEED Series Winning Features
23,7 up to 99,2 m3/h*
Enlargement VARISPEED R404A product range
New ECOLINE VARISPEED R134a series
New VARISPEED CO2 Series
Winning Features
Optimized motor-inverter combination
delivery ex works enables
Simple installation and commissioning
Maintenance free due to suction gas-cooling
Wide speed range 25…87Hz
* Basis: 87 Hz

9. OCTAGON VARISPEED Optimized motor inverter combination
VARISPEED Motor: 230V D-connection (40S)
Enable full motor torque also between Hz
Motor operates in the complete frequency range within the optimum voltage/frequency ratio - No motor efficiency drop with trans-synchronous mode
Increases cooling capacity by 70% with same compressor dimensions
40S Motor allows operation without inverter (Y-connection, 400V-3-50Hz supply)

10. OCTAGON VARISPEED Winning feature: Suction gas-cooling
Outstanding operating safety Steady inverter cooling even at high ambient temperatures Full output current even at high ambient temperatures (no derating) No malfunction of inverter fan possible
Maintenance-free inverter No air cooled heat sink used therefore no drawback by dirt on heat exchanger surface

11. OCTAGON VARISPEED Competitors with air-cooled inverter
Reduced output current capability at higher ambient temperatures
Derating effect
Reduced life-time of power parts at high ambient temperatures
40% less inverter current ! - Significant drop of motor torque - Blocked motor situations at peak load

12. OCTAGON VARISPEED Winning feature: Improved EMC behavior
Rock-solid full aluminum inverter housing
Pre-assembled shielded connection cable between inverter and compressor -Short cable leads to reduced distortion
New: All VARISPEED compressors with aluminum terminal box as standard
No additional EMC measures required !

13. Prospective Availability
OCTAGON VARISPEED
Prospective Availability
/ Ready for field test deliveries
R134a: 4NES-12F3Y or 4PES-10.F3Y NOW
R404A: 4DC-7.F3Y NOW
C4 VARISPEED Q1/2011
CO2 : C3 VARISPEED Q1/2011
Documentation
/ New brochures: KP VARISPEE D R404A+R134a
KP VARISPEED CO2