Danfoss Inverter reciprocating compressors VTZ Application guide

Application guidelines

Inverter reciprocating

compressors

VTZ

R404A - R507 - R407C - R134a

http://cc.danfoss.com

Application Guidelines	Content

Inverter compressors............................................................................................................................	5
Speed control................................................................................................................................................................................................	5
Advantages of speed control...................................................................................................................................................................	5
Danfoss VTZ compressors with CD frequency converters ...........................................................................................................	5
Compressor and frequency converter selection.................................................................................	6
Compressor size............................................................................................................................................................................................	6
Frequency converter variants..................................................................................................................................................................	6
Nomenclature and specifications........................................................................................................	7
Compressor nomenclature.......................................................................................................................................................................	7
Compressor specifications........................................................................................................................................................................	7
Frequency converter nomenclature.....................................................................................................................................................	7
Frequency converter general specifications......................................................................................................................................	7
Operating conditions............................................................................................................................	8
Application envelope R404A/R507A.....................................................................................................................................................	8
Speed range R404A/R507A......................................................................................................................................................................	8
Application envelope R407C...................................................................................................................................................................	9
Speed range R407C.....................................................................................................................................................................................	9
Application envelope R134a..................................................................................................................................................................	10
Speed range R134a...................................................................................................................................................................................	10
High and low pressure protection.......................................................................................................................................................	11
Low ambient temperature operation.................................................................................................................................................	11
Electronic expansion valve.....................................................................................................................................................................	11
Short cycle timer function......................................................................................................................................................................	12
Discharge gas temperature protection function............................................................................................................................	12
Discharge gas thermostat.......................................................................................................................................................................	12
Oil return management function.........................................................................................................................................................	13
Approvals & certificates......................................................................................................................	14
Approvals and certificates......................................................................................................................................................................	14
Pressure equipment directive 2014/68/EU.......................................................................................................................................	14
Low voltage directive 2014/35/EU.......................................................................................................................................................	14
Machine directive 2014/30/EU..............................................................................................................................................................	14
Internal free volume..................................................................................................................................................................................	14
Technical specifications......................................................................................................................	15
Dimensions..........................................................................................................................................	21
VTZ038 / VTZ054........................................................................................................................................................................................	21
VTZ086 / VTZ121........................................................................................................................................................................................	22
VTZ171 / VTZ215........................................................................................................................................................................................	23
Sight glass.....................................................................................................................................................................................................	24
Schrader........................................................................................................................................................................................................	24
Suction & discharge connections.........................................................................................................................................................	24
Frequency converter dimensions........................................................................................................................................................	24
Frequency converters Enclosures........................................................................................................................................................	27
Electrical data, connections and wiring............................................................................................	30
Compressor electrical specifications...................................................................................................................................................	30
Wiring & EMC protection.........................................................................................................................................................................	30
EMC correct installation of an IP20 frequency converter CD302..............................................................................................	31
Wiring diagram...........................................................................................................................................................................................	32
Fuses...............................................................................................................................................................................................................	33
Supply voltage............................................................................................................................................................................................	33
Wiring connections...................................................................................................................................................................................	34
Electrical connections..............................................................................................................................................................................	34
Soft-start control........................................................................................................................................................................................	35
Phase sequency and reverse rotation protection..........................................................................................................................	35
IP rating..........................................................................................................................................................................................................	35
Motor protection........................................................................................................................................................................................	35
Voltage imbalance.....................................................................................................................................................................................	35
Ambient temperature and altitude.....................................................................................................................................................	35

FRCC.PC.009.A7.02 3

Application Guidelines	Content

System design recommendations......................................................................................................	36
Piping design...............................................................................................................................................................................................	36
Suction lines.................................................................................................................................................................................................	36
Discharge line..............................................................................................................................................................................................	37
Filter driers....................................................................................................................................................................................................	37
Liquid refrigerant control and charge monitoring........................................................................................................................	37
Off-cycle migration....................................................................................................................................................................................	37
Liquid floodback during operation.....................................................................................................................................................	37
Liquid floodback at change over cycles in reversible heat pumps..........................................................................................	38
Liquid floodback and zeotropic refrigerants....................................................................................................................................	38
Crankcase heater........................................................................................................................................................................................	38
Liquid line solenoid valve & pump-down.........................................................................................................................................	38
Suction accumulator.................................................................................................................................................................................	38
Vibration........................................................................................................................................................................................................	39
Evaporator....................................................................................................................................................................................................	39
Condenser....................................................................................................................................................................................................	39
Defrosting using reverse cycle..............................................................................................................................................................	39
Oil circulation rate and oil level management................................................................................................................................	40
Installation...........................................................................................................................................	41
System cleanliness.....................................................................................................................................................................................	41
Compressor handling...............................................................................................................................................................................	41
Compressor mounting.............................................................................................................................................................................	41
Compressor connection to system......................................................................................................................................................	41
System pressure test.................................................................................................................................................................................	42
Leak detection.............................................................................................................................................................................................	42
Vacuum pull-down moisture removal................................................................................................................................................	42
Start-up .........................................................................................................................................................................................................	43
Refrigerant charging.................................................................................................................................................................................	43
Commissioning...........................................................................................................................................................................................	44
Oil level checking and top-up...............................................................................................................................................................	44
Suction gas superheat..............................................................................................................................................................................	44
Programming..............................................................................................................................................................................................	44
Ordering information and packaging...............................................................................................	45
Kit ordering and shipping.......................................................................................................................................................................	45
Packaging.....................................................................................................................................................................................................	45
Frequency converter single pack.........................................................................................................................................................	45
Accessories...........................................................................................................................................	48
Valves, adapters, connectors & gaskets for use on suction and discharge connections.................................................	48
Crankcase heaters, soft starters, protection modules, thermostats & resistors...................................................................	49
Lubricant , acoustic hoods and spareparts.......................................................................................................................................	49
Spare parts Frequency converter.........................................................................................................................................................	50

4 FRCC.PC.009.A7.02

Application Guidelines	Inverter compressors

Speed control	The introduction of speed control for
	refrigeration compressors is one of the major
	developments towards the optimization of
	refrigeration systems for the years to come. The
	capability of controlling speed is leading to a
	new approach in the design of refrigeration
	systems based on average load. For periods of

high cooling demand, the compressor speed can be increased which results in a higher refrigerant flow and thus higher cooling capacity. For periods of lower cooling demand, compressor speed can be decreased resulting in a lower cooling capacity.

Advantages of speed control

Smaller compressors can be selected than normally required with fixed speed compressors.

Energy savings are realized because the compressor speed is adapted to the actual cooling demand. The compressor power input is directly related to its speed. Further

improvements can be achieved by adjusting the speed of other motors (fans, pumps, ...) to the actual needs.

Reduction of inrush current at start-up. The starting current is reduced to a value close to the nominal current.

Cooling process optimization. By continuously adapting the compressor speed to the actual needs, a more precise cooling process control is achieved.

Increased reliability. The number of on / off cycles is drastically decreased resulting in a reduction of mechanical and electrical stresses and wear, consequently improving the overall system reliability.

Reduced sound nuisance. At night, when cooling demand is usually low, the compressor speed can be decreased, contributing to lower system operating sound levels.

Danfoss VTZ compressors with CD frequency converters

Selecting the right frequency converter for a inverter refrigeration compressor can be very complex. Several parameters and characteristics have to be taken into account such as voltage, current, torque, heat generation, ramp-up, IPrate, EMC and RFI.

For that reason, Danfoss has created pre-defined sets of VTZ compressors with dedicated CD302 frequency converters. All above mentioned

parameters have been taken into account during the design and test phase already. This is your guarantee that the compressor and frequency converter are fully compatible.

Of course these sets also simplify your selection considerably. And during commissioning the pre-programmed factory settings of the CD302 will save you valuable time.

FRCC.PC.009.A7.02 5

Application Guidelines Compressor and frequency converter selection

Compressor size	Inverter technology offers more flexibility
	in compressor selection than fixed speed
	compressors. Selection of the right inverter
	compressor size can be done by different
	methods:
	1. Maximum cooling capacity: Select a
	compressor size which achieves the peak load
	system cooling capacity demand at its maximum
	speed.
	2. Nominal cooling capacity: Select a compressor
	size which achieves the nominal system cooling
	capacity at a rotational speed of 3600 – 4500 rpm
	(60-75 Hz).

3. Best Seasonal Efficiency Ratio: Select a compressor size which achieves the minimum system cooling demand at its minimum speed. Ensure that the compressor is able to cover the peak load system cooling capacity. This selection makes the compressor to run for a maximum of time at part load where the system efficiency is highest.

Simplified compressor performance tables can be found on following pages. For more complete performance data, please refer to the data sheets or to the calculation program.

Frequency converter variants

Different frequency converter variants are available according to:

1.IP class (CD302 frequency converters are available in IP20 / IP21 and IP55).

2.Local Control Panel (LCP) provided or not.

6 FRCC.PC.009.A7.02

Application Guidelines Nomenclature and specifications

Compressor nomenclature

Motor voltage code

(see table Supply voltage)

Compressor specifications										Swept						Displacement
				Compressor																								Oil charge	Net Weight
										volume			Min speed				50 Hz				Max speed				Cyl. nbr
					model																							(dm³)	(kg)
									(cm³/rev)
														(m³/h)			(m³/h)					(m³/h)
					VTZ038				38.12				4.57			6.63					12.12				1			0.95	21
					VTZ054				53.86				6.46			9.37					17.13				1			0.95	24
					VTZ086				85.64				8.74			14.90					27.23				2			1.80	35
					VTZ121				120.94				12.34			21.04					36.28				2			1.80	40
					VTZ171				171.26				17.47			29.80					54.46				4			3.90	60
					VTZ215				215.44				21.97			37.49					68.51				4			3.90	64
Frequency converter
nomenclature
				CD 302 P7K5 T4 P21 H1
Compressor drive																											RFI class
Series 302																											Enclosure protection
Output power 7.5 kW																											Mains supply voltage code

Frequency converter general specifications

	Mains supply voltage	T2: 200 - 240 V +/-10% (3-phase)
		T4: 380 - 480 V +/-10% (3-phase)
	Supply frequency	50 / 60 Hz
	Output voltage	0 - 100 % of supply voltage
	Inputs	6 digital (0 - 24 V), 2 analogue (-10 / +10 V or 0 / 4 V -20 mA, scalable)
	Programmable outputs	2 digital (0- 24 V), 1 analogue, 2 relay
	Protection functions	Over-current protection, over-modulation handling, low / high
		current handling
	Control functions	Pump-down function, Anti short-cycle function, Oil return
		management
	Communication	Modbus

FRCC.PC.009.A7.02 7

Application Guidelines Operating conditions

Application envelope R404A/R507A

SH: 10K

SH: 30K

Max. 5100 rpm for VTZ121 and max. 4800 rpm above 0°C

Speed range R404A/R507A		Speed low limit	Speed high limit
	VTZ038	2100 rpm	5400 rpm
	1 cylinder
	VTZ054	2100 rpm	5400 rpm
	VTZ086	1800 rpm	5400 rpm
	2 cylinders		Tevap<0°C: 5100 rpm
	VTZ121	1800 rpm
			Tevap>0°C: 4800 rpm
	VTZ171	1800 rpm	5400 rpm
	4 cylinders
	VTZ215	1800 rpm	5400 rpm

8 FRCC.PC.009.A7.02

Application Guidelines	Operating conditions

Application envelope

R407C

SH: 10K

SH: 30K

Speed range R407C

	Speed low limit	Speed high limit
VTZ038	2100 rpm	5400 rpm
1 cylinder	2100 rpm	5400 rpm
VTZ054
VTZ086	1800 rpm	5400 rpm
2 cylinders	1800 rpm	5100 rpm
VTZ121
VTZ171	1800 rpm	5400 rpm
4 cylinders	1800 rpm	5400 rpm
VTZ215

FRCC.PC.009.A7.02 9

Application Guidelines	Operating conditions

Application envelope
R134a
	75
	70
	65
<![if ! IE]> <![endif]>(°C)					SH: 10K
	60
<![if ! IE]> <![endif]>temperature
					SH: 30K
	55
<![if ! IE]> <![endif]>Condensing	50
	45
	40
	35
	30
	-20	-15	-10	-5	0	5	10	15	20

Evaporating temperature (°C)

Speed range R134a

	Speed low limit	Speed high limit
VTZ038	2100 rpm	5400 rpm
1 cylinder	2100 rpm	5400 rpm
VTZ054
VTZ086	1800 rpm	5400 rpm
2 cylinders	1800 rpm	5100 rpm
VTZ121
VTZ171	1800 rpm	5400 rpm
4 cylinders	1800 rpm	5400 rpm
VTZ215

10 FRCC.PC.009.A7.02

Application Guidelines	Operating conditions

High and low pressure protection

A high pressure safety switch is required to stop the compressor, should the discharge pressure exceed the values shown in the table below. The high pressure switch can be set to lower values depending on the application and ambient conditions. The HP switch must either be in a

lockout circuit, or be a manual reset device to prevent compressor cycling around the high pressure limit. When a discharge valve is used, the HP switch must be connected to the service valve gauge port, which cannot be isolated.

	R407C	R134a	R404A
Working pressure range high side bar (g)	7.8 - 29.4	7.9 - 20.2	9.9 - 27.7
Working pressure range low side bar (g)	1.4 - 6.6	0.6 - 3.9	1 - 6.1

A low pressure safety switch is recommended to avoid compressor operation at too lower suction pressures.

Low ambient temperature operation

At low ambient temperatures, the condensing temperature and condensing pressure in air cooled condensers will decrease.

This low pressure may be insufficient to supply enough liquid refrigerant to the evaporator. As a result the evaporator temperature will strongly decrease with the risk of frosting. At compressor start-up, the compressor can pull a deep vacuum and it can be switched off by the low pressure protection. Depending on the low pressure switch setting and delay timer, short cycling can occur. To avoid these problems, several solutions are possible, based on reducing condenser capacity:

•Reduce air flow to condensers.

•Indoor location of condensers

•Liquid flooding of condensers (note: this solution requires extra refrigerant charge,

which can introduce other problems. A nonreturn valve in the discharge line is required and special care should be taken when designing the discharge line.).

Other problems can also occur when the compressor is operating at low ambient temperature. During shut down periods, liquid refrigerant can migrate to a cold compressor.

For such conditions a belt-type crankcase heater is strongly recommended.

Note that with 100% suction gas cooled motors, Maneurop® compressors can be externally insulated.

Refer to section «Liquid refrigerant migration & charge limits» for more details.

Electronic expansion valve

With variable capacity systems, an electronic expansion valve (EXV) is one of the better solutions to handle refrigerant mass flow variations. Ramp-up and ramp-down settings, of both EXV and compressor, must be done with great care.

Ramp-up of the EXV must be shorter than the ramp-up of the compressor, to avoid any low pressure operation on suction side of the compressor. The EXV can also be opened, up

to a certain degree, before the start up of the compressor.

Ramp-down of the EXV must be longer than the ramp-down of the compressor, also to avoid low pressure operation (except with pump-down).

The EXV should be closed, and remain closed, when the compressor is off, to avoid any liquid refrigerant entering the compressor.

FRCC.PC.009.A7.02 11

Application Guidelines	Operating conditions

Short cycle timer function Short cycle control is directly provided by the CD302 frequency converter, when parameter 28.0* is enabled.

The function is factory set to enabled, with minimum running time 12 seconds and interval between starts 300 seconds.

Short cycle settings are accessible in parameter 28.0* list, in the “compressor functions” menu.

Discharge gas temperature protection function

A discharge temperature monitor function can be enabled in the frequency converter. All settings are available in parameter list 28.2*. They are factory preset as follow:

•28.20: [0] none - temperature source (sensor input)

•28.21: [60] °C - temperature unit

•28.24: 130 - warning level

•28.25: [1] decrease cooling - warning action

•28.26: 145 - emergency level

•28.27: is the actual discharge temperature measured by the sensor.

To activate the discharge temperature monitor function, with the factory setting, the only modification required is to connect the sensor to Analog Input 54 (4.20 mA) between 13 and 54, and set the parameter 28.20 to “[2] Analog input 54”. When the warning level is reached, “decrease cooling” action starts by decreasing the compressor speed by steps of 600 rpm (10 Hz) every 3 minutes until the temperature, either drops below the level, programmed in parameter 28.24 (warning level) or exceed the level programmed in parameter 28.26 (emergency level). When the emergency level is reached,

the compressor is stopped and the frequency converter shows an “alarm”.

Discharge gas thermostat Discharge gas temperature (DGT) protection is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope.

The discharge gas temperature must not exceed 135°C.

A discharge gas temperature protection device must be installed on all heat pumps. In reversible air-to-air and air-to-water heat pumps the discharge temperature must be monitored during development test by the equipment manufacturer.

The compressor must not be allowed to cycle on the discharge gas thermostat. Continuous operations beyond the compressor’s operating range will cause serious damage to the compressor!

A DGT accessory is available from Danfoss: refer to accessories pages at the end of this document.

The discharge gas thermostat accessory kit (code no.7750009) includes all components required for installation, as shown below. The thermostat must be attached to the discharge line within 150 mm from the compressor discharge port and must be thermally insulated and tightly fixed on the pipe.

Thermostat

Discharge line

Insulation

Bracket

12 FRCC.PC.009.A7.02

Application Guidelines	Operating conditions

Oil return management function

Insufficient oil level can be the result of oil depositing itself in pipes and heat exchangers. The oil deposit can be returned to the crankcase, by increasing velocity for short period, at regular time intervals or when velocity is too low to ensure adequate oil returns.

With oil return management these two oil return mechanisms can be programmed in the CD302.

With oil return management function enabled, the CD302 performs oil return by boosting the compressor speed to 4200 rpm (70 Hz) for a selectable duration as programmed in parameter 28.13. The boosts are performed at fixed time intervals (as programmed in parameter 28.12)

or if the compressor speed has been less than 3000 rpm (50 Hz) for too long (as programmed in 28.11) which ever occurs first. Thus the maximum time between two consecutive oil return boosts is programmed in 28.12.

FRCC.PC.009.A7.02 13

Application Guidelines	Approvals & certificates

Approvals and certificates

VTZ Compressor with CD302 frequency	Certificates are listed on the product datasheets:
converter comply with the following approvals	http://www.danfoss.com/odsg
and certificates.
CE0062 or CE0038 (European Directive)	All models
UL (Underwriters Laboratories)	All models
EMC 2014/30/EU	All models

Pressure equipment directive 2014/68/EU

Product	VTZ038-054		VTZ086-121-171-215-242
Fluids		Group 2
PED Category	I		II
Evaluation module	no scope		D1
TS - Service temperature LP		50°C > Ts > -35°C
PS - Service pressure LP		22,6 bar(g)

Low voltage directive 2014/35/EU

Product	VTZ038-215
Declaration of conformity	Contact Danfoss

Machine directive 2014/30/EU

	Product	VTZ038-215
	Manufacturer’s declaration of	Contact Danfoss
	incorporation

Internal free volume

Product	Internal free volume at LP side (litre)	High side (litre)
VTZ038-054	7.7	0.28
VTZ086-121	16.5	0.63
VTZ171-215	32	1.20

14 FRCC.PC.009.A7.02

Application Guidelines

Performance data

To		-30
Tc	Qo	Pe

VTZ038

		20	1 090	0.61
	<![if ! IE]> <![endif]>rpm	30	840	0.64
		40	610	0.64
	<![if ! IE]> <![endif]>Min
		50	400	0.62
		60	-	-
	<![if ! IE]> <![endif]>rpm	20	1 720	1.08
		30	1 380	1.10
	<![if ! IE]> <![endif]>3600	40	1 020	1.10
		50	640	1.04
		60	-	-
		20	2 200	1.75
	<![if ! IE]> <![endif]>rpm	30	1 680	1.74
		40	1 140	1.60
	<![if ! IE]> <![endif]>Max
		50	630	1.34
		60	-	-

VTZ054

		20	1 480	0.88
	<![if ! IE]> <![endif]>rpm	30	1 180	0.94
		40	920	0.96
	<![if ! IE]> <![endif]>Min
		50	680	0.96
		60	-	-
	<![if ! IE]> <![endif]>rpm	20	2 520	1.58
		30	2 120	1.67
	<![if ! IE]> <![endif]>3600	40	1 660	1.69
		50	1 190	1.64
		60	-	-
		20	3 740	2.45
	<![if ! IE]> <![endif]>rpm	30	2 970	2.47
		40	2 170	2.43
	<![if ! IE]> <![endif]>Max
		50	1 410	2.30
		60	-	-

VTZ086

		20	1 840	1.18
	<![if ! IE]> <![endif]>rpm	30	1 340	1.21
		40	930	1.16
	<![if ! IE]> <![endif]>Min
		50	580	1.04
		60	-	-
	<![if ! IE]> <![endif]>rpm	20	4 290	2.46
		30	3 260	2.53
	<![if ! IE]> <![endif]>3600	40	2 290	2.46
		50	1 400	2.24
		60	-	-
		20	6 160	3.89
	<![if ! IE]> <![endif]>rpm	30	4 960	4.00
		40	3 640	3.91
	<![if ! IE]> <![endif]>Max
		50	2 260	3.59
		60	-	-

VTZ121

		20	2 750	1.89
	<![if ! IE]> <![endif]>rpm	30	2 280	2.03
		40	1 770	2.10
	<![if ! IE]> <![endif]>Min
		50	1 230	2.08
		60	-	-
	<![if ! IE]> <![endif]>rpm	20	5 530	3.69
		30	4 500	3.88
	<![if ! IE]> <![endif]>3600	40	3 530	3.99
		50	2 630	4.00
		60	-	-
		20	8 060	5.47
	<![if ! IE]> <![endif]>rpm	30	6 400	5.63
		40	4 870	5.67
	<![if ! IE]> <![endif]>Max
		50	3 450	5.64
		60	-	-

Technical specifications

													R404A
-25		-20		-15		-10			-5	0			5
Qo	Pe	Qo	Pe	Qo	Pe	Qo	Pe	Qo	Pe	Qo	Pe	Qo	Pe
1 430	0.67	1 850	0.71	2 350	0.74	2 950	0.76	3 650	0.77	-	-	-	-
1 130	0.72	1 480	0.79	1 910	0.85	2 420	0.89	3 030	0.93	3 730	0.95	4 550	0.96
850	0.75	1 140	0.85	1 500	0.94	1 920	1.02	2 430	1.09	3 030	1.14	3 730	1.18
590	0.76	830	0.90	1 110	1.02	1 450	1.14	1 860	1.24	2 350	1.32	2 930	1.40
-	-	530	0.92	750	1.08	1 010	1.23	1 320	1.37	1 700	1.50	2 160	1.61
2 290	1.19	3 000	1.29	3 860	1.37	4 890	1.43	6 110	1.45	-	-	-	-
1 920	1.26	2 570	1.40	3 360	1.52	4 290	1.62	5 400	1.69	6 690	1.74	8 190	1.75
1 490	1.30	2 070	1.49	2 760	1.66	3 580	1.81	4 560	1.93	5 700	2.03	7 040	2.11
1 040	1.29	1 520	1.52	2 100	1.75	2 800	1.95	3 630	2.14	4 610	2.30	5 760	2.44
-	-	960	1.47	1 410	1.75	1 960	2.02	2 620	2.27	3 420	2.50	4 370	2.70
3 080	2.01	4 160	2.22	5 450	2.39	6 990	2.51	8 790	2.57	-	-	-	-
2 480	2.08	3 460	2.38	4 640	2.64	6 030	2.86	7 650	3.03	9 550	3.15	11 730	3.22
1 860	2.03	2 710	2.43	3 740	2.78	4 960	3.10	6 400	3.37	8 070	3.60	10 010	3.78
1 230	1.85	1 940	2.34	2 800	2.79	3 830	3.21	5 050	3.58	6 480	3.92	8 150	4.20
-	-	1 190	2.11	1 860	2.66	2 670	3.17	3 640	3.65	4 810	4.09	6 190	4.49
1 970	0.97	2 590	1.05	3 370	1.11	4 310	1.16	5 450	1.18	-	-	-	-
1 600	1.05	2 120	1.16	2 770	1.26	3 570	1.34	4 540	1.40	5 700	1.45	7 060	1.48
1 260	1.11	1 690	1.25	2 220	1.38	2 890	1.50	3 700	1.60	4 670	1.69	5 820	1.76
950	1.14	1 290	1.32	1 710	1.49	2 240	1.64	2 890	1.79	3 680	1.92	4 640	2.03
-	-	900	1.37	1 220	1.57	1 610	1.77	2 110	1.96	2 730	2.13	3 490	2.29
3 300	1.75	4 270	1.91	5 450	2.05	6 870	2.16	8 550	2.26	-	-	-	-
2 840	1.88	3 720	2.09	4 790	2.28	6 070	2.44	7 590	2.59	9 380	2.72	11 450	2.82
2 300	1.96	3 070	2.22	4 010	2.46	5 130	2.69	6 460	2.90	8 030	3.09	9 870	3.25
1 720	1.97	2 360	2.29	3 130	2.60	4 070	2.89	5 190	3.17	6 520	3.42	8 090	3.66
-	-	1 590	2.29	2 180	2.66	2 910	3.03	3 790	3.37	4 870	3.71	6 150	4.02
4 870	2.76	6 250	3.06	7 910	3.34	9 880	3.61	12 210	3.84	-	-	-	-
4 010	2.84	5 270	3.21	6 780	3.57	8 580	3.92	10 710	4.26	13 190	4.58	16 070	4.87
3 090	2.84	4 190	3.28	5 520	3.72	7 110	4.15	9 000	4.59	11 210	5.02	13 800	5.43
2 150	2.77	3 070	3.26	4 170	3.77	5 510	4.29	7 120	4.82	9 040	5.35	11 290	5.87
-	-	1 950	3.15	2 800	3.73	3 850	4.32	5 150	4.94	6 720	5.56	8 600	6.19
2 580	1.31	3 520	1.42	4 660	1.49	6 030	1.54	7 650	1.56	-	-	-	-
1 950	1.40	2 720	1.56	3 660	1.69	4 800	1.80	6 160	1.87	7 750	1.92	9 600	1.94
1 420	1.42	2 040	1.66	2 800	1.85	3 720	2.02	4 830	2.16	6 140	2.27	7 670	2.35
980	1.38	1 460	1.69	2 050	1.97	2 770	2.21	3 650	2.42	4 690	2.60	5 920	2.75
-	-	950	1.67	1 390	2.03	1 930	2.36	2 580	2.65	3 380	2.91	4 330	3.14
5 790	2.74	7 620	2.97	9 820	3.15	12 430	3.29	15 490	3.38	-	-	-	-
4 590	2.91	6 200	3.25	8 140	3.54	10 440	3.78	13 140	3.96	16 290	4.10	19 910	4.18
3 430	2.97	4 810	3.42	6 470	3.82	8 440	4.17	10 770	4.47	13 500	4.71	16 650	4.91
2 340	2.87	3 460	3.45	4 820	3.98	6 450	4.46	8 390	4.88	10 680	5.25	13 360	5.56
-	-	2 180	3.34	3 230	4.00	4 500	4.62	6 040	5.18	7 870	5.68	10 050	6.12
8 310	4.34	10 950	4.74	14 130	5.09	17 890	5.40	22 290	5.66	-	-	-	-
6 910	4.59	9 290	5.13	12 130	5.61	15 490	6.05	19 410	6.44	23 940	6.78	29 120	7.07
5 360	4.66	7 440	5.35	9 920	5.99	12 830	6.58	16 250	7.11	20 190	7.60	24 730	8.03
3 720	4.51	5 470	5.38	7 540	6.19	9 980	6.94	12 850	7.64	16 190	8.28	20 040	8.87
-	-	3 420	5.16	5 060	6.15	6 990	7.08	9 280	7.96	11 970	8.78	15 110	9.55
3 660	2.05	4 810	2.19	6 230	2.30	7 940	2.39	9 980	2.46	-	-	-	-
3 110	2.25	4 130	2.43	5 390	2.60	6 900	2.74	8 710	2.85	10 840	2.95	13 320	3.02
2 480	2.38	3 360	2.64	4 430	2.86	5 730	3.06	7 280	3.24	9 120	3.39	11 280	3.51
1 810	2.44	2 520	2.77	3 390	3.07	4 450	3.35	5 730	3.59	7 250	3.81	9 060	4.01
-	-	1 650	2.82	2 300	3.21	3 090	3.57	4 070	3.90	5 270	4.20	6 700	4.48
7 470	4.09	9 890	4.47	12 850	4.84	16 410	5.21	20 620	5.56	-	-	-	-
6 220	4.35	8 360	4.82	10 990	5.26	14 150	5.70	17 900	6.12	22 300	6.54	27 410	6.96
4 980	4.56	6 800	5.11	9 040	5.64	11 760	6.17	15 020	6.68	18 860	7.18	23 360	7.68
3 770	4.68	5 230	5.33	7 040	5.97	9 280	6.60	11 990	7.21	15 230	7.81	19 070	8.41
-	-	3 660	5.48	5 010	6.24	6 710	6.99	8 840	7.72	11 440	8.43	14 570	9.14
10 760	6.11	14 150	6.73	18 330	7.32	23 400	7.85	29 440	8.31	-	-	-	-
8 760	6.38	11 710	7.14	15 340	7.90	19 750	8.64	25 040	9.34	31 310	9.99	36 440	9.82
6 870	6.50	9 350	7.38	12 420	8.29	16 170	9.20	20 690	10.10	26 100	10.99	30 720	10.95
5 070	6.53	7 080	7.49	9 560	8.51	12 630	9.57	16 370	10.65	20 890	11.74	24 920	11.89
-	-	4 860	7.52	6 750	8.62	9 120	9.79	12 070	11.02	15 690	12.29	19 050	12.65

FRCC.PC.009.A7.02 15

Application Guidelines

Performance data

		To	-30
		Tc	Qo	Pe
	VTZ171
		20	3 900	2.31
	<![if ! IE]> <![endif]>rpm	30	2 920	2.32
		40	2 090	2.31
	<![if ! IE]> <![endif]>Min
		50	1 380	2.23
		60	-	-
	<![if ! IE]> <![endif]>rpm	20	7 670	4.52
		30	6 220	4.73
		40	4 700	4.78
	<![if ! IE]> <![endif]>3600
		50	3 110	4.54
		60	-	-
		20	11 310	7.31
	<![if ! IE]> <![endif]>rpm	30	8 920	7.54
		40	6 400	7.24
	<![if ! IE]> <![endif]>Max
		50	3 750	6.29
		60	-	-
	VTZ215
		20	4 790	3.00
	<![if ! IE]> <![endif]>rpm	30	3 700	3.18
		40	2 690	3.24
	<![if ! IE]> <![endif]>Min
		50	1 750	3.15
		60	-	-
	<![if ! IE]> <![endif]>rpm	20	9 250	5.45
		30	7 600	5.86
	<![if ! IE]> <![endif]>3600	40	5 910	6.12
		50	4 130	6.24
		60	-	-
		20	15 190	9.71
	<![if ! IE]> <![endif]>rpm	30	12 240	9.94
		40	9 030	9.79
	<![if ! IE]> <![endif]>Max
		50	5 820	9.21
		60	-	-

Technical specifications

																R404A
	-25		-20		-15		-10			-5			0			5
Qo		Pe	Qo	Pe	Qo	Pe	Qo	Pe	Qo	Pe	Qo		Pe	Qo		Pe
5 360		2.59	7 180	2.83	9 400	3.04	12 050	3.20	15 160	3.31	-		-	-		-
4	150	2.65	5 680	2.96	7 550	3.24	9 790	3.47	12 450	3.67	15 540		3.82	19	120	3.91
3 090		2.72	4 340	3.11	5 870	3.47	7 720	3.81	9 910	4.10	12 500		4.36	15 500		4.57
2 170		2.74	3 140	3.23	4 340	3.70	5 790	4.14	7 540	4.56	9 620		4.94	12	070	5.28
-		-	2 070	3.24	2 940	3.84	4 010	4.41	5 320	4.97	6 900		5.49	8 790		5.98
10 390		5.12	13 830	5.66	18 060	6.16	23 160	6.61	29 220	7.03	-		-	-		-
8 660		5.49	11 700	6.16	15 400	6.77	19 870	7.32	25 170	7.82	31 380		8.28	38 600		8.71
6 840		5.74	9 450	6.61	12 620	7.39	16 430	8.08	20 960	8.71	26 280		9.28	32 490		9.80
4 930		5.76	7 100	6.87	9 720	7.87	12 860	8.77	16 600	9.58	21	020	10.31	26 200		10.98
-		-	4 660	6.81	6 710	8.08	9 160	9.24	12 090	10.29	15 590		11.24	19	740	12.10
15 890		8.35	21 460	9.26	28 030	10.05	35 630	10.73	44 290	11.32	-		-	-		-
12 990		8.95	17 920	10.20	23 720	11.32	30 410	12.32	38 030	13.21	46 580		14.03	56 090		14.77
9 960		9.03	14 240	10.66	19 260	12.14	25 040	13.50	31 610	14.73	38 980		15.87	47	190	16.93
6 790		8.51	10 420	10.55	14 660	12.43	19 520	14.17	25 040	15.78	31 230		17.28	38 110		18.69
-		-	6 470	9.78	9 910	12.09	13 850	14.25	18 310	16.27	23 310		18.16	28	870	19.95
6 690		3.31	9 050	3.58	11 940	3.79	15 400	3.95	19 490	4.04	-		-	-		-
5 330		3.60	7 350	3.97	9 820	4.30	12 800	4.57	16 320	4.79	20 450		4.94	25 240		5.02
4	070	3.78	5 760	4.28	7 820	4.74	10 310	5.15	13 270	5.51	16	750	5.80	20 820		6.03
2 880		3.83	4 250	4.48	5 910	5.08	7 910	5.65	10 320	6.16	13 170		6.62	16 530		7.02
-		-	2 800	4.52	4 060	5.30	5 600	6.03	7 450	6.72	9	670	7.36	12 330		7.95
12	750	6.26	17 190	7.01	22 690	7.68	29 370	8.27	37 360	8.76	-		-	-		-
10 700		6.85	14 570	7.79	19 340	8.68	25 130	9.49	32 060	10.23	40 260		10.86	49 840		11.38
8 600		7.28	11 900	8.41	15 940	9.49	20 840	10.53	26 720	11.49	33 700		12.38	41 900		13.16
6	420	7.55	9 160	8.85	12 470	10.13	16 470	11.37	21 290	12.56	27 050		13.68	33 880		14.72
-		-	6 270	9.13	8 850	10.58	11 970	12.02	15 740	13.41	20 280		14.76	25 730		16.04
20 520		11.10	27 020	12.40	34 830	13.62	44 110	14.73	54 990	15.73	-		-	-		-
17	180	11.64	23 160	13.30	30 300	14.90	38 760	16.44	48 670	17.91	60	180	19.30	73 430		20.59
13 430		11.78	18 700	13.76	25 000	15.73	32 450	17.67	41 210	19.58	51 430		21.44	63 230		23.24
9 480		11.45	13 880	13.73	19 140	16.03	25 420	18.35	32 860	20.66	41 600		22.97	51 780		25.26
-		-	8 910	13.17	12 970	15.77	17 900	18.43	23 830	21.13	30	910	23.85	39 290		26.60

To: Evaporating temperature in °C Superheat = 10 K

Min rpm: Minimum rotation speed 3600 rpm: Rotation speed 3600 rpm Max rpm: Maximum rotation speed

Tc: Condensing temperature in °C	Qo: Cooling capacity in W	Pe: Power input in kW
Subcooling = 0 K

16 FRCC.PC.009.A7.02