Daikin ERAP110MBYNN, ERAP170MBYNN, ERAP150MBYNN Operation manuals

OPERATION MANUAL

Air-cooled condensing units

ERAP110MBYNN

ERAP150MBYNN

ERAP170MBYNN

ERAP110MBYNN

ERAP150MBYNN

ERAP170MBYNN

Air-cooled condensing units

Operation manual

CONTENTS	Page
Introduction .......................................................................................	1
Technical specifications .............................................................................	1
Electrical specifications .............................................................................	1
Description ........................................................................................	2
Function of the main components..............................................................	3
Safety devices............................................................................................	3
Internal wiring - Parts table........................................................................	4
Before operation................................................................................	4
Checks before initial start-up .....................................................................	4
Power supply connection and crankcase heating......................................	5
General recommendations ........................................................................	5
Operation ..........................................................................................	5
Digital controller .........................................................................................	5
Working with the unit .................................................................................	6
Advanced features of the digital controller.................................................	8
Troubleshooting ...............................................................................	13
Maintenance....................................................................................	14
Maintenance activities .............................................................................	14
Disposal requirements .............................................................................	14

READ THIS MANUAL ATTENTIVELY BEFORE STARTING UP THE UNIT. DO NOT THROW IT AWAY. KEEP IT IN YOUR FILES FOR FUTURE REFERENCE.

INTRODUCTION

This operation manual concerns air-cooled condensing units of the Daikin ERAP-MBYNN series. These units are provided for outdoor installation and used for cooling applications.

This manual has been prepared to ensure adequate operation and maintenance of the unit. It will tell you how to use the unit properly and will provide help if problems occur. The unit is equipped with safety devices, but they will not necessarily prevent all problems caused by improper operation or inadequate maintenance.

In case of persisting problems contact your local Daikin Dealer.

Before starting up the unit for the first time, make sure that it has been properly installed. It is therefore necessary to carefully read the installation manual supplied with the unit and the recommendations listed in "Checks before initial start-up" on page 4.

Technical specifications(1)

General ERAP			110	150			170
Dimensions HxWxD		(mm)		2160x2340x2238
Machine weight		(kg)	1326	1440			1516
Connections
• liquid line		(inch)			7/8" OD
• suction line		(inch)			2 1/8" OD
• pressure relief valve outlet		(inch)			FNPT 1"
Compressor
Type			semi-hermetic single screw
Qtyxmodel			1x		1x		1x
			ZHC3LTGUYE		ZHC3WLGUYE		ZHC5LMGUYE
Speed		(rpm)		2880
Oil type					FVC 68D
Oil charge volume		(l)	5.5	5.5			7.5
Condensor
Nominal air flow	(m3/min)		4x 240		4x 240		4x 240
No. of motorsxoutput		(kW)	4x 0.55		4x 1.02		4x 1.02
Electrical specifications(1)
Model ERAP			110		150		170
Power supply
• Phase				3~
• Frequency		(Hz)		50
• Voltage		(V)		400
• Voltage tolerance		(%)		±10
Unit
• Nominal running current		(A)	70	84			104
• Maximum running current		(A)	95	120			135
• Recommended fuses		(A)(gL)	3x 125		3x 160		3x 160
according to IEC 269-2
Compressor
• Phase				3~
• Frequency		(Hz)		50
• Voltage		(V)		400
• Nominal running current		(A)	62	70			90
Control and fan motor
• Phase				3~
• Frequency		(Hz)		50
• Voltage		(V)		400
• Nominal running current		(A)	7.6	12.4			12.4

	(1) Refer to the engineering data book for the complete list of specifications.
Operation manual	ERAP110~170MBYNN
1	Air-cooled condensing units
	4PW22681-1

DESCRIPTION

The ERAP air-cooled condensing units are available in 3 standard sizes.

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		<![if ! IE]> <![endif]>1000
<![if ! IE]> <![endif]>2210		1000
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2346

12

10

11

16

1

15

4

6 7 13 2 3 9 8 5 14

Figure - Main components

1	Condenser	9	Power supply intake
2	Compressor (M1C)	10	Emergency stop (S5E)
3	Discharge stop valve	11	Switchbox
4	Liquid stop valve	12	Digital display controller
5	Suction stop valve	13	Transportbeam
6	Suction line	14	Ambient temperature sensor (R5T)
7	Liquid line	15	Field wiring intake
8	Drier + charge valve	16	Main isolator switch (optional - S13S)

Required space around the unit for service and air intake

ERAP110~170MBYNN	Operation manual
Air-cooled condensing units	2
4PW22681-1

Function of the main components

	Y11S
S1PH	S14PH
			B1P
			M1C
			6
			2		A
			Y16S
	3				5
	7	1	4
	Y15S
				B2P	B
	(*)		S3T
					5	5
	M11F	M12F	M13F		M14F
			R5T

Figure - Functional diagram

1Condenser

2Drier

3Charge valve

4Liquid stop valve

5Safety valve

As the refrigerant circulates through the unit, changes in its state or condition occur. These changes are caused by the following main components:

■Compressor

The compressor (M*C) acts as a pump and circulates the refrigerant in the refrigeration circuit. It compresses the refrigerant vapour coming from the evaporator at the pressure at which it can easily be liquefied in the condenser.

■Condenser

The function of the condenser is to change the state of the refrigerant from gaseous to liquid. The heat gained by the gas in the evaporator is discharged through the condenser to the ambient air, and the vapour condenses to liquid.

■Filter/drier

The filter installed behind the condenser removes small particles from the refrigerant to prevent blockage of the tubes.

The drier takes water out of the system.

Safety devices

The unit is equipped with two kinds of safety device:

1General safety devices

General safety devices shut down all circuits and stop the whole unit. For this reason the unit has to be manually put on again after a general safety occurred.

2Part safety devices

Part safety devices shut down the part they protect.

6Suction stop valve

7Strainer

AStandard

BDual pressure relief valve (OP03)

(*)Standard (see A) or dual pressure relief valve (see B)

An overview of all safety devices is given below.

■Overcurrent relay

The overcurrent relays (K*S) are located in the switchbox of the unit and protect the compressor motors in case of overload, phase failure or too low voltage. The relays are factory-set and may not be adjusted. When activated, they must be reset manually, followed by a reset of the controller.

■Compressor thermal protectors

The compressor motors are equipped with thermal protectors (Q*M). The protectors are activated when the compressor motor temperature becomes too high.

When temperature returns to normal, the protectors reset automatically, but the controller needs to be reset manually.

■Fan motor thermal protector

The condenser fan motors are equipped with thermal protectors (Q*F). The protectors are activated when the temperature becomes too high. When temperature returns to normal, the protectors reset automatically.

■Discharge thermal protectors

The unit is equipped with discharge thermal protectors (S*T). The protectors are activated when the temperature of the refrigerant leaving the compressor becomes too high. When the temperature returns to normal the protector resets automatically and the controller needs to be reset manually.

■Low pressure safety

When the suction pressure of a circuit is too low, the circuit controller shuts down the circuit. When the pressure returns to normal, the safety device can be reset on the controller.

■Pressure relief safety valve

The safety valve is activated when the pressure in the refrigerant circuit becomes too high. If this occurs, shut down the unit and contact your local dealer.

Operation manual	ERAP110~170MBYNN
3	Air-cooled condensing units
	4PW22681-1

■High pressure switch

Each circuit is protected by two high pressure switches (S*PH) which measure the condenser pressure (pressure at the outlet of the compressor). They are installed in the compressor housing of the circuit. When the pressure becomes too high, the pressure switches are activated and the circuit stops.

The switches are factory-set and may not be adjusted. When activated, they must be reset by means of a screwdriver. The controller still needs to be reset.

■Reverse phase protector

The reverse phase protectors (R*P) prevent the screw compressors from running in the wrong direction. If the compressors do not start, two phases of the power supply must be inverted.

Internal wiring - Parts table

Refer to the internal wiring diagram supplied with the unit. The abbreviations used are listed below:

A1 ...............	** .......	Current transfo/A-meter
A1P........................		PCB-controller
B1P........................		Low pressure transmitter
B2P........................		High pressure transmitter
C1~C3 ...................		Capacitor
E1HC .....................		Crankcase heater compressor
E3H........................		Evaporator heater
F1U~F3U ....	# ........	Main fuses
F4U,F5U .....	# ........	Fuses for evaporator heater
F6B ........................		Fuse for primary of TR1
F7B ........................		Fuse for secondary of TR1
F8U........................		Surge proof fuse for A1P
F9B ........................		Fuse for secondary of TR2
F12B ......................		Fuse for fanmotors
H1P.............	*.........	Indication lamp general operation
H2P.............	*.........	Indication lamp alarm

R1F ........................		Feedback resistance
R1P ........................		Reverse phase protector
R4T ........................		Sensor for thermostat
R5T ........................		Sensor for ambient temperature
S1PH......................		High pressure switch
S3T ........................		Discharge thermal protector
S5E ........................		Emergency stop push button
S6S ............	* .........	Changeable switch for remote function
		(e.g. remote start/stop)
S8L.........................		Flowswitch
S9L.............	#.........	Contact that closes if the fan/pump is working
S10S ..........	* .........	Changeable switch for remote function
		(e.g. dual setpoint)
S11S ..........	* .........	Changeable switch for remote function
		(e.g. enable/disable capacity limitation 1)
S12S ..........	* .........	Changeable switch for remote function
		(e.g. enable/disable capacity limitation 2)
S13S ..........	##.......	Main isolator switch
S14PH....................		High pressure switch
TC01,TC02 ............		Optocoupler (analog to digital signal)
TR1 ........................		Transfo control circuit
TR2 ........................		Transfo supply controller + digital inputs
V1...........................		V-meter
Y11S ......................		12% capacity step for compressor
Y15S ......................		Liquid injection valve of the compressor
Y16S ......................		Liquid line solenoid valve
		Not included with standard unit
		Not possible as option		Possible as option
Obligatory		#		##
Not obligatory		*		**

	H3P.............	*.........	Indication lamp operation compressor	BEFORE OPERATION
	H5P	*	Changeable output

J1...........................	Power supply
J11.........................	RS485 connection
J2,J3,J6 .................	Analog input
J5,J7,J8 .................	Digital input
J12~J18.................	Digital output
K1M .......................	Linecontactor
K2M .......................	Deltacontactor
K3M .......................	Starcontactor
K7F~K9F ...............	Fancontactor
K17S......................	Overcurrent relay
K1A........................	Auxiliary relay for safeties
K2A........................	Auxiliary relay compressor thermal protector
K3A........................	Auxiliary relay for discharge thermal protector
K7A........................	Auxiliary relay for safety high pressure
L1,L2,L3.................	Main supply terminals
M11F-M14F ...........	Fan motors
M1C .......................	Compressor motor
M1S .......................	Stepless capacity control for compressor
PE..........................	Main earth terminal
Q11F~Q14F ..........	Thermal protectors fan motors
Q1M.......................	Thermal protector compressor motor
R1 ..........................	Auxiliary resistance for feedback

Checks before initial start-up

Make sure that the circuit breaker on the power supply panel of the unit is switched off.

After the installation of the unit, check the following before switching on the circuit breaker:

1Field wiring

Make sure that the field wiring between the local supply panel and the unit has been carried out according to the instructions described in the installation manual, according to the wiring diagrams and according to European and national regulations.

2Additional interlock contact

Additional interlock contacts (S*L) must be provided (e.g. flowswitch, contact of pump motor contactor). Make sure that they have been installed between the appropriate terminals (refer to the wiring diagram supplied with the unit). They must be normal open contacts.

3Fuses or protection devices

Check that the fuses or the locally installed protection devices are of the size and type specified in the installation manual.

Make sure that neither a fuse nor a protection device has been bypassed.

ERAP110~170MBYNN	Operation manual
Air-cooled condensing units	4
4PW22681-1

4Earth wiring

Make sure that the earth wires have been connected properly and that the earth terminals are tightened.

5Internal wiring

Visually check the switch box on loose connections or damaged electrical components.

6Fixation

Check that the unit is properly fixed, to avoid abnormal noises and vibrations when starting up the unit.

7Damaged equipment

Check the inside of the unit on damaged components or squeezed pipes.

8Refrigerant leak

Check the inside of the unit on refrigerant leakage. If there is a refrigerant leak, call your local dealer.

9Oil leak

Check the compressor on oil leakage. If there is an oil leak, call your local dealer.

10Stop valves

Open the liquid line, discharge and suction (if provided) stop valves completely.

11Air inlet/outlet

Check that the air inlet and outlet of the unit is not obstructed by paper sheets, cardboard, or any other material.

12Power supply voltage

Check the power supply voltage on the local supply panel. The voltage must correspond to the voltage on the identification label of the unit.

Power supply connection and crankcase heating

In order to avoid compressor damage, it is necessary to switch on the crankcase heater for at least 8 hours before starting the compressor after a long period of standstill.

To switch on the crankcase heater proceed as follows:

1Switch on the circuit breaker on the local supply panel. Make sure that the unit is "OFF".

2The crankcase heater is switched on automatically.

3Check the supply voltage on the supply terminals L1, L2, L3, by means of a voltmeter. The voltage must correspond to the voltage indicated on the identification label of the unit. If the voltmeter reads values which are not within the ranges specified in the technical data, check the field wiring and replace the supply cables if necessary.

4Check the LED on the reverse phase protectors. If it lights up, the phase order is correct. If not, switch off the circuit breaker and call a licensed electrician to connect the wires of the power supply cable in the correct phase order.

5Check if the crankcase heaters are warming up.

After 8 hours, the unit is ready for operation.

General recommendations

Before switching on the unit, read following recommendations:

1When the complete installation and all necessary settings have been carried out, close all front panels of the unit.

2The service panels of the switch boxes may only be opened by a licensed electrician for maintenance purposes.

3To avoid damage to the LCD display of the digital controller, never switch off the power supply during winter.

OPERATION

The ERAP units are equipped with a digital controller offering a userfriendly way to set up, use and maintain the unit.

This part of the manual has a task-oriented, modular structure. Apart from the first section, which gives a brief description of the controller itself, each section or subsection deals with a specific task you can perform with the unit.

Digital controller

User interface

The digital controller consists of an alphanumeric display, labelled keys which you can press and a number of LEDs.

■Digital built-in controller

Figure - Digital built-in controller

fkey, to enter the main menu

okey, to start up or to shut down the unit.

pkey, to enter the safeties menu or to reset an alarm.

	g	keys, to scroll up or down through the screens of a menu
		(only in case W, X or C appears) or to raise, respectively
	h
		lower a setting.

qkey, to confirm a selection or a setting.

■Digital remote controller (to be ordered separately)

Figure - Digital remote controller

okey, to start up or to shut down the unit.

pkey, to enter the safeties menu or to reset an alarm.

key, to scroll through the screens of a menu (only in case

kW, X or C appears) or to raise, respectively lower a setting.

qkey, to confirm a selection or a setting.

ukey, to enter the readout menu.

skey, to enter the setpoint menu.

zkey, to enter the user settings menu.

ekey, to enter the timers menu.

rkey, to enter the history menu.

tkey, to enter the info menu.

ykey, to enter the input/output status menu.

akey, to enter the user password menu.

dkey, has no effect on ERAP units.

ikey, has no effect on ERAP units.

Operation manual	ERAP110~170MBYNN
5	Air-cooled condensing units
	4PW22681-1