Danfoss VSH170AGANA Installation guide [bg]

Instructions

VSH compressors

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8510240P01-C

FRCC.PI.005.A3.ML

Danfoss Commercial Compressors - 09/10

Instructions VSH compressors

Oil injection control valve

A

B

D

E

C

F

A:

E:

G

Model number

Housing service pressure

B:

Serial number

F:

Factory charged lubricant

C:

Refrigerant

G:

Compressor frequency & Max Must trip cur-

D:

Supply voltage & Locked rotor current

rent

						R410A
	70
	65							50 - 90 Hz
	60			SH=6K
	55
<![if ! IE]> <![endif]>(°C)	50
	45					30 - 90 Hz
<![if ! IE]> <![endif]>C			<![if ! IE]> <![endif]>Hz
<![if ! IE]> <![endif]>T	40
	35		<![if ! IE]> <![endif]>- 90
	30
			<![if ! IE]> <![endif]>50
	25
	20
	15
	-30	-25	-20	-15	-10	-5	0	5	10	15	20
						T0 (°C)

Oil injection control assembly

3 2

1

4

5

6

220V

2 A max

Put the clip-on coil (1) with the gasket (2) over

Attach the connector (4) to the coil using the

Wire the connector as indicated.

the valve body (3) on the compressor

delivered accessories (5) and (6).

Oil injection control dismantling

Remove the clip-on coil by using a screw driver.

The compressor must only be used for its designed purpose(s) and within its scope of application (refer to «operating limits»).

Consult Application guidelines and datasheet available from http://cc.danfoss.com

Under all circumstances, the EN378 (or other applicable local safety regulation) requirements must be fulfilled.

The compressor is delivered under nitrogen gas pressure (between 0.3 and 0.7 bar) and hence cannot be connected as is; refer to the «assembly» section for further details.

The compressor must be handled with caution in the vertical position (maximum offset from the vertical : 15°)

3	FRCC.EI.005.A3.02 © Danfoss Commercial Compressors 09/10

Instructions

-Depending on the frequency converter version, the physical position of individual connectors may differ from below diagram.

-Always make sure that the compressor terminals T1, T2, T3 are connected to the frequency converter terminals 96, 97, 98 respectively.

-The compressor motor cable must be shielded

L1										91		L1
L2										92		L2
L3										93		L3
										95		PE
										39	39	Ana out COM
										42	42	Ana out +	<![if ! IE]> <![endif]>CDS302
										50	50	Ana in +10 V
										53	53	Ana in 0 ± 10 V
										54	54	Ana in 0 ± 10 V
										55	55	Ana in COM
										12	12	+24V
										13	13	+24V
										18	18	Dig in
										19	19	Dig in
										27	27	Dig in/out
										29	29	Dig in/out
										32	32	Dig in
										33	33	Dig in
										20	20	Dig in COM
										37	37	Dig in

Basic connections

and the armoured part must be connected to ground on both cable ends; at the side of the compressor and at the side of the frequency converter.

-Use an EMC cable gland for cable installation and perfect grounding; The metallic terminal box of the compressor has a paint-free surface around

W	98		T3
V	97		T2
U	96		T1
PE	99

NC	<![if ! IE]> <![endif]>1	03
NO	<![if ! IE]> <![endif]>RELAY	02								230 V
COM		01
										2 A max
NC
	<![if ! IE]> <![endif]>2	06
COM	<![if ! IE]> <![endif]>RELAY
		04
NO		05

N- RS485	69	69
P+ RS485	68	68
COM RS485	61	61

the connection hole for better conductivity.

-A low pressure safety switch is mandatory to avoid compressor vacuum operation.

-At start-up, verfiy that the compressor rotates in the right direction and pumps.

Legends:
Ana:	Analogue
Dig:	Digital
in:	Input
out:	Output
COM:	Common
NC:	Normally-closed
NO:	Normally-open

		Open loop	Process loop
91, 92, 93:	3 Phase mains input	X	X
95:	Earth	X	X
39, 42	Analogue output	-	-
50:	Analogue input	-	-
53:	PLC+ (0 to 10 V)	X	-
54:	Sensor -	-	X
55:	PLC-	X	-
12:	HP/LP switch	X	X
12:	External On/Off (NO)	X	X
13:	Factory bridged to 37	X	X
13:	Sensor +	-	X
18:	External On/Off (NO)	X	X
19:	Digital input	-	-
27:	HP/LP switch (NC) / safety devices	X	X
29:	Digital input/output	-	-
32, 33	Digital input	-	-
20:	Digital input Common	-	-
37:	Factory bridged to 13	X	X
98:	To compressor terminal T3	X	X
97:	To compressor terminal T2	X	X
96:	To compressor terminal T1	X	X
99:	To compressor earth connection	X	X
02, 01:	Relay 1 to oil solenoid valve	X	X
06, 05, 04:	Relay 2	-	-
69, 68:	RS485 Bus	-	-
61:	RS485 Bus Common	-	-

The CDS302 frequency converter is factory preset with parameters for the open loop control principle. The process loop control principle can be selected by changing parameters in the «Quick menu».

Open loop:

0 - 10 V control

Frequency converter in slave mode

Process loop:

4 - 20 mA control

Frequency converter under own PID controller

- Optional connection

X : Mandatory connection

4	FRCC.EI.005.A3.02 © Danfoss Commercial Compressors 09/10

Instructions

1 - Introduction

These instructions pertain to the VSH Variable Speed scroll compressors used for A/C systems. They provide necessary information regarding safety and proper usage of this product.

2 – Handling and storage

•Handle the compressor with care. Use the dedicated handles in the packaging. Use the compressor lifting lug and use appropriate and safe lifting equipment.

•Store and transport the compressor in an upright position.

•Store the compressor between -35°C and 55°C.

•Don’t expose the compressor and the packaging to rain or corrosive atmosphere.

3 – Safety measures before assembly

Never use the compressor in a flammable atmosphere.

•The compressor ambient temperature may not exceed 50°C during off-cycle.

•Mount the compressor on a horizontal flat surface with less than 3° slope.

•The compressor can only be supplied by a frequencyconverter.Makesurethatthefrequency converter is the dedicated one for the compressor (power size and voltage: input & output). Parameter 1.13 of the frequency converter lists the possible combinations of compressors, frequency converters and refrigerants.

•When installing a VSH, use equipment specifically reserved for HFC refrigerants which was never used for CFC refrigerants.

•Use clean and dehydrated refrigeration-grade copper tubes and silver alloy brazing material.

•Use clean and dehydrated system components.

•The piping connected to the compressor must be flexible in 3 dimensions to dampen vibrations.

•Make sure the installation is equipped with high-pressure safety components (e.g. pressure switch, pressure relief valve) to prevent against the bursting of pressure-containing components.

4 - Assembly

•Slowly release the nitrogen holding charge through the schrader port.

•Connect the compressor to the system as soon as possible to avoid oil contamination from ambient moisture.

•Avoid material entering into the system while cutting tubes. Never drill holes where burrs cannot be removed.

•Braze with great care using state-of-the-art technique and vent piping with nitrogen gas flow.

•Connect the required safety and control devices. When the schrader port is used for this, remove the internal valve.

5 – Leak detection

Never pressurize the circuit with oxygen or dry air. This could cause fire or explosion.

•Do not use dye for leak detection.

•Perform a leak detection test on the complete system.

•The low side test pressure must not exceed 30 bar.

•When a leak is discovered, repair the leak and repeat the leak detection.

6 – Vacuum dehydration

•Never use the compressor to evacuate the system.

•ConnectavacuumpumptoboththeLP&HPsides.

•Evacuate the system to a pressure of 500 µm Hg (0.67 mbar) absolute.

•Do not use a megohmmeter nor apply power to the compressor while it is under vacuum as

this may cause internal damage.

7 – Electrical connections

•Switch off and isolate the main power supply. See previous page for wiring details.

•The compressor is protected against excess current by the frequency converter. Follow local regulations regarding power line protection. The compressor must be connected to ground.

•All electrical components must be selected as per local standards and compressor requirements.

•Please refer to drawings for typical wiring connections and examine the specific wiring diagram located in the frequency converter package. For further details, refer to the application guidelines.

•Follow very closely the installation instruction for the frequency converter:

-Mounting: The base frame of the frequency converter must be very well fixed to the support to ensure a very good continuity between the ground potential of all electrical panels and electrical boxes of the system.

-Wiring:Allcontrolwireshavetobeofascreee- ned design.The cable for electrical motor supply has to be of a shielded design as well. Correctearthingoftheshieldcoverhastobedone using the method shown on drawings, every time this one has to be earthed on each end of the cables. Distinct cable trays must be used for control and motor supply.

•The frequency converter ensures direct motor protection and the factory set parameters are such to protect the motor over all current malfunctions. An external overload is not necessary.

•Set the frequency converter parameters in accordance with Danfoss recommendations for the CDS302 frequency converter and VSH variable speed compressor.

8 – Filling the system

• Keep the compressor switched off.

• Fill the refrigerant in liquid phase into the outlet side of the condenser or liquid receiver. The charge must be as close as possible to the nominal system charge to avoid low pressure operation and excessive superheat.

Compressor	Refrigerant charge limit (kg)
VSH088	5.9
VSH117	7.9
VSH170	13.5

Above this limit; protect the compressor against liquid flood-back with a pump-down cycle not lower than 2.3 bar (g) or a suction line accumulator.

• Never leave the filling cylinder connected to the circuit to avoid overfilling.

9 – Verification before commissioning

Use safety devices such as safety pressure switch and mechanical relief valve in compliance with both generally and locally applicable regulations and safety standards. Ensure that they are operational and properly set.

Check that the settings of high-pressure switches and relief valves don’t exceed the maximum service pressure of any system component.

•A low-pressure switch is mandatory to avoid vacuum operation. Minimum setting 1.5 bar (g).

•Verify that all electrical connections are properly fastened and in compliance with local regulations.

•A crankcase heater is not required. This function is integrated in the CDS302 which provides a calibrated DC current during off cycles to heat the electrical motor. The CDS302 must be energized at least 12 hours before initial start-up and after prolonged shutdown.

•After comissioning it is strongly recommended to keep the frequency converter always energized.

10 – Start-up

•All service valves must be in the open position.

•Balance the HP/LP pressure.

•Energize the compressor. It must start promptly.

•If the compressor doesn’t start, verify that the compressor is hooked up to the frequency converter; check the power lead connections. If these verifications reveal no abnormality, check the motor windings with an ohmmeter.

•Check the frequency converter control panel: If any alarm is displayed check the wiring and in particular the polarity of the control cables. If an alarm is shown, refer to the frequency converter application manual. Verify in particular the combination of compressor, frequency converter and refrigerant.

•Check current draw and voltage levels on the mains. The values for the compressor electrical motor can be directly displayed on the frequency converter control panel.

•The optimum compressor suction superheat is around 6K. The maximum allowed superheat is 30K.

11 – Check with running compressor

•Check current draw and voltage.

•Check suction superheat to reduce risk of slugging.

•Observe the oil level at start and during operation to confirm that the oil level remains visible. Excess foaming in oil sight glass indicates refrigerant on the sump.

•Monitor the oil sight glass for 1 hour after system equilibrium to ensure proper oil return to the compressor. This oil check has to be done over the speed range to guarantee:

-a good oil return at low speed with minimum gas velocity.

-a good oil management at high speed with maximum oil carry over.

•Respect the operating limits.

•Check all tubes for abnormal vibration. Movements in excess of 1.5 mm require corrective measures such as tube brackets.

•When needed, additional refrigerant in the liquid phase may be added in the low-pressure side as far as possible from the compressor. The compressor must be operating during this process.

•Do not overcharge the system.

•Never release refrigerant to the atmosphere.

•Before leaving the installation site, carry out a general installation inspection regarding cleanliness, noise and leak detection.

•Record type and amount of refrigerant charge as well as operating conditions as a reference for future inspections.

•Compressor failure to build up pressure: Check all bypass valves in the system to ensure that none of these has been opened. Also check that all solenoid valves are in their proper position.

•Abnormal running noise: Ensure the absence of any liquid flood-back to the compressor by means of measuring the return gas superheat and compressor sump temperature. The sump should be at least 6K above the saturated suction temperature under steady-state operating conditions.

•The high-pressure switch trips out: Check condenser operations (condenser cleanliness, fan operation, water flow and water pressure valve, water filter, etc.). If all these are OK, the problem may be due to either refrigerant overcharging or the presence of a noncondensable (e.g. air, moisture) in the circuit.

•The low-pressure switch trips out: Check evaporator operations (coil cleanliness, fan operations, water flow, water filter, etc.), liquid refrigerant flow and pressure drops (solenoid valve, filter

FRCC.EI.005.A3.02 © Danfoss Commercial Compressors 09/10

5

Instructions

dryer, expansion valve, etc.), refrigerant charge.

•Low refrigerant charge: The correct refrigerant charge is given by the liquid sight glass indication, the condenser delta T in relation to the refrigerant pressure tables (pressure-temperature), the superheat and the sub-cooling, etc. (if additional charge is deemed necessary, refer to section 8).

•Compressor short cycling: The number of cycles shall never exceed 12 starts per hour.

12 - Maintenance

Internal pressure and surface temperature are dangerous and may cause permanent injury. Maintenance operators and installers require appropriate skills and tools. Tubing and compresssor upper shell temperature may exceed 100°C and can cause severe burns.

Ensure that periodic service inspections to ensure system reliability and as required by local regulations are performed.

To prevent system related compressor problems, following periodic maintenance is recommended:

•Verify that safety devices are operational and properly set.

•Ensure that the system is leak tight.

•Check the compressor current draw.

•Confirm that the system is operating in a way consistent with previous maintenance records and ambient conditions.

•Check that all electrical connections are still adequately fastened.

•Keep the compressor clean and verify the absence of rust and oxidation on the compressor shell, tubes and electrical connections.

•Check the internal temperature of the frequency converter on its display and the cooling air flow.

•Faults are logged in the frequency converter memory and can be displayed. This can help to evaluate and improve parameters of the frequency converter or of the system itself.

13 - Warranty

Always transmit the model number and serial number with any claim filed regarding this product.

Use the fault memory of the frequency converter to recover the fault descriptions before initializing the system and even before shutting off the power.

The product warranty may be void in following cases:

•Absence of nameplate.

•External modifications; in particular, drilling, welding, broken feet and shock marks.

•Compressor opened or returned unsealed.

•Rust, water or leak detection dye inside the compressor.

•Use of a refrigerant or lubricant not approved by Danfoss.

•Any deviation from recommended instructions pertaining to installation, application or maintenance.

•Use in mobile applications.

•Use in explosive atmospheric environment.

•No model number or serial number transmitted with the warranty claim.

14 – Disposal

Danfoss recommends that compressors, frequency converters and compressor oil

should be recycled by a suitable company.

Danfoss Commercial Compressors http://cc.danfoss.com

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

FRCC.EI.005.A3.02 - Sept. 2010

Copyright Danfoss Commercial Compressors - 09/10

VSH
		A
		B								D
										E
										F
		C
										G
A:						E:
B:						F:
C:						G: &
D: &
					R410A
	70
	65							50 - 90 Hz
	60			SH=6K
	55
<![if ! IE]> <![endif]>(°C)	50
	45					30 - 90 Hz
<![if ! IE]> <![endif]>C		<![if ! IE]> <![endif]>Hz
<![if ! IE]> <![endif]>T	40
		<![if ! IE]> <![endif]>90-
	35
	30	<![if ! IE]> <![endif]>50
	25
	20
	15
	-30	-25	-20	-15	-10	-5	0	5	10	15	20
						T0 (°C)

3 2

1

4

5

6

220V

2 A max

(1) (2)	(5) (6) (4)
(3)

	« »	EN378	0.3 0.7 bar
	http://cc.danfoss.com			15°
7	FRCC.EI.005.A3.41 © Danfoss Commercial Compressors 09/10

-T1 T2 T396 97 98

L1										91		L1
L2										92		L2
L3										93		L3
										95		PE
										39	39	Ana out COM
										42	42	Ana out +	<![if ! IE]> <![endif]>CDS302
										50	50	Ana in +10 V
										53	53	Ana in 0 ± 10 V
										54	54	Ana in 0 ± 10 V
										55	55	Ana in COM
										12	12	+24V
										13	13	+24V
										18	18	Dig in
										19	19	Dig in
										27	27	Dig in/out
										29	29	Dig in/out
										32	32	Dig in
										33	33	Dig in
										20	20	Dig in COM
										37	37	Dig in

--

-

- EMC

Ana

W

98

T3

Dig

V

97

T2

in

U

96

T1

out

COM

PE

99

NC

NO

NC

<![if ! IE]> <![endif]>1

03

NO

<![if ! IE]> <![endif]>RELAY

02

230 V

COM

01

2 A max

NC

<![if ! IE]> <![endif]>2

06

COM

<![if ! IE]> <![endif]>RELAY

04

NO

05

N- RS485	69	69
P+ RS485	68	68
COM RS485	61	61

91, 92, 93:	3	X	X
95:		X	X
39, 42		-	-
50:		-	-
53:	PLC+ 0 10 V	X	-
54:	-	-	X
55:	PLC-	X	-
12:	HP/LP	X	X
12:	/ (NO)	X	X
13:	37	X	X
13:	+	-	X
18:	/ (NO)	X	X
19:		-	-
27:	HP/LP (NC) /	X	X
29:	/	-	-
32, 33		-	-
20:		-	-
37:	13	X	X
98:	T3	X	X
97:	T2	X	X
96:	T1	X	X
99:		X	X
02, 01:	1——	X	X
06, 05, 04:	2	-	-
69, 68:	RS485	-	-
61:	RS485	-	-
-	X

CDS302« »

0 – 10 V

4 – 20 mA PID

8	FRCC.EI.005.A3.41 © Danfoss Commercial Compressors 09/10

1 –

A/C VSH

2 –

• 恰当且安全的吊装设备。

•-35°C 55°C

3 –

• 不得超过50°C

•3°

•1.13

•VSH HFCCFC

•3

4 –

•schrader

• 境中的水分污染润滑油。

• 焊接时在管路内通氮气保护。

•schrader

5 –

•30 bar

• 漏检测。

6 –

•LP HP

•  500  μm  Hg (0.67 mbar)

• 部损坏。

7 –

• 压缩机要求进行。

- 接线盒之间连接良好。

- 器和电动机电源的电缆槽必须分开。

• 数则可以在所有电流异常时保护电动机。 不需要外部过载保护。

•Danfoss CDS302

VSH

8 –

	kg
VSH088	5.9
VSH117	7.9
VSH170	13.5

2.3(g)

• 量充注。

9 –

• 设定值为1.5 (g)

• 符合当地规定。

•CDS302 DCCDS302  12

• 状态。

10 –

•HP/LP

• 是要确认压缩机、变频器和制冷剂组合。

•6K30K

11 –

•1

- 回油良好。

• 幅超过1.5

• 注入口尽可能远离压缩机。此过程必须在 压缩机运行过程中进行。

• 涉及清洁度、噪音和泄漏检测。

• 确保所有电磁阀都处于恰当的开度。

• 应比饱和吸入温度高6K

• 量。

•ΔT 8 ΔT-

• 时启动12

12 –

100°C

进行下列维护操作

• 道和电气连接没有生锈或氧化。

• 却空气流。

13 –

序列号。

FRCC.EI.005.A3.41 © Danfoss Commercial Compressors 09/10

9

故障存储器恢复故障说明。

• 及撞击痕迹。

• 染料。

•Danfoss

14 –

Danfoss

Danfoss Commercial Compressors http://cc.danfoss.com

Danfoss Danfoss

Danfoss Danfoss Danfoss A/S

FRCC.EI.005.A3.41 - Sept. 2010

Copyright Danfoss Commercial Compressors - 09/10