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1.2.8 Parameters relating to defrost

Parameters relating to defrost

Parameters

Description

Level

VS

Unit

Max.

Min.

Value

d01

Defrost operation:

0= Absent (function not available)

1= Present

U

7 (R/W)

-

1

0

1

d02

Defrost at time or temperature:

0= Time (function not available)

1= Temperature / Pressure

U

8 (R/W)

-

1

0

1

d03

Defrost start pressure

U

19 (R/W)

bar

d04

/11

5,8

d04

Defrost end pressure

U

21 (R/W)

bar

/12

d03

18

d05

Minimum defrost start time

U

37 (R/W)

Seconds

150

10

10

d06

Minimum defrost duration

U

38 (R/W)

Seconds

150

0

0

d07

Maximum defrost duration

U

39 (R/W)

Minutes

15

1

6

d08

Time between two defrost cycles

U

40 (R/W)

Minutes

150

10

30

d11

Activation of heaters during defrost:

0= No

1= Yes

U

9 (R/W)

-

0

1

1

d12

Compressor stoppage before defrost

F

43 (R/W)

Minutes

3

0

1

d13

Compressor stoppage after defrost

F

44 (R/W)

Minutes

3

0

1

d16

Forced  ventilation  time  at  defrost  end  (if

F13=2 only)

F

47 (R/W)

Minutes

360

0

60

A

Defrost  end  tempera‐

ture (d04)

E

Minimum  defrost  start  time

(d05)

B

Defrost start

F

Timer start

C

Defrost end

G Defrost  start  temperature

(d03)

D

Maximum  defrost  du‐

ration (d06)

 

 

1

User manual

1.2

Operating instructions µC2 (YLHA 50, 60 and 80)

18

Summary of Contents for YLHA 50

Page 1: ...Air condensed water chillers and heat pumps YLHA 50 60 and 80 User manual Ref N 40290_EN 1110...

Page 2: ...5 Parameters relating to the compressor 13 1 2 6 Operating graphics 14 1 2 7 Parameters relating to fans 17 1 2 8 Parameters relating to defrost 18 1 2 9 Antifreeze control configuration parameters 1...

Page 3: ...1 User manual...

Page 4: ...compressor pump and electric heater start up By reading the control sensors and safety elements the controller protects the entire equipment against malfunctions The system allows con necting the uni...

Page 5: ...anically expanded within the fin assembly Fans Of the axial and low sound level type Equipped with single phase motors with IP54 protection These motors allow speed control by means of a phase cut out...

Page 6: ...n antifreeze heater centrifugal pump expansion vessel charged with nitrogen at 1 5 bar safety valve set to 6 bar water circuit pressure gauge two air bleed valves filling valve and drain valve Also in...

Page 7: ...mote control unit with keyboard for cool heat and ON OFF functions Includes power supply alarm and cool heat LEDs Maximum cable length 50 m Remote terminal For total access and control of the system b...

Page 8: ...to sit This base must be solid and dimensioned in accord ance with the load to be supported The antivibratory support accessory for models YL CA YLHA 40 50 and 60 includes 4 units whereas for models...

Page 9: ...fied and the system can also be supervised Expansion and control module for the second compressor This is an expansion of the base module to which it should be connected by means of two cables It cont...

Page 10: ...llows for reading of the values detected by the sensors as well as other system values Can be used by the user without affecting unit operation General Modification of the parameters that affect basic...

Page 11: ...set point D K Compressor 1 Compressor 2 B4 B8 Radiometric pressure sensor Fan speed and de frost control E Alarm ID1 Remote COOL HEAT Water flow control F 230 24 transformer ID2 Fan heat switches G Fa...

Page 12: ...Direct parameters Press for 5 seconds Selects a Direct parameter and shows its value Confirms parameter changes Press once 3 6 Parameter programming with password Press for 5 seconds 4 Selection of hi...

Page 13: ...ssure switch HP D NTC water outlet sensor B2 K Four way valve E Indoor heat exchanger L Outdoor heat ex changer F NTC water inlet sensor B1 M Pressure sensor B4 Parameter tables The following tables s...

Page 14: ...1 Minimum pressure F 1 R W bar 12 0 0 12 Maximum pressure F 2 R W bar 99 9 11 45 13 B1 sensor calibration F 3 R W C 12 12 0 14 B2 sensor calibration F 4 R W C 12 12 0 15 B3 sensor calibration F 5 R W...

Page 15: ...Start up timing U 30 R W Seconds 999 0 10 c07 Compressor start up delay with regard to the pump U 31 R W Seconds 150 0 20 c08 Pump stoppage delay with regard to the compressor U 32 R W Minutes 150 0...

Page 16: ...erating time of a compressor A Signal B Compressor Min stoppage time of a compressor A Signal B Compressor Min time between compressor start ups A Signal B Compressor 1 User manual 1 2 Operating instr...

Page 17: ...1 C Compressor 1 B Signal 2 D Compressor 2 Time between stoppage of two compressors A Signal 1 C Compressor 1 B Signal 2 D Compressor 2 Compressor pump stoppage delays A Compressor B Pump User manual...

Page 18: ...Pump compressor start up delays A Pump B Compressor 1 User manual 1 2 Operating instructions C2 YLHA 50 60 and 80 16...

Page 19: ...cle maximum speed pressure dif ferential F 26 R W bar 50 0 3 7 F07 Cool cycle fan stoppage pressure differen tial F 28 R W bar 50 0 6 5 F08 Heat cycle minimum speed pressure F 30 R W bar 80 40 8 7 F09...

Page 20: ...defrost duration U 38 R W Seconds 150 0 0 d07 Maximum defrost duration U 39 R W Minutes 15 1 6 d08 Time between two defrost cycles U 40 R W Minutes 150 10 30 d11 Activation of heaters during defrost...

Page 21: ...6 R W 1 0 0 A07 Minimum level antifreeze control set point temperature U 15 R W C 79 40 3 A08 Heating heater activation set point tempera ture U 16 R W C r15 A01 3 A09 Heating heater deactivation set...

Page 22: ...ital input 0 Absent 1 Present U 14 R W 1 0 0 H07 ON OFF digital input 0 Absent 1 Present U 15 R W 1 0 0 H08 Network configuration do not modify this parameter F 57 R W 3 0 2 H09 Keyboard locked 0 Disa...

Page 23: ...t 1 for remote Cool Heat selection Do not modify this parameter F 69 R W 9 P09 Digital input 2 for Fan heat protector function F 70 R W 6 P10 Digital input 6 for function Not used 0 P11 Digital input...

Page 24: ...r06 4 only Maximum activation time Output tem perature F 80 R W Seconds 999 r09 120 r09 If r06 4 only Minimum activation time Output tem perature F 81 R W Seconds 999 c04 100 r10 If r06 4 only Maximum...

Page 25: ...oltage Automatic EHS High supply voltage Automatic EPr Eprom error Unit operating Automatic EPb Eprom error At start up Automatic ESP Communication failure with expansion module Automatic EL 1 2 Probl...

Page 26: ...erminals D5 and B on the connecting strip To activate said inlet a value of 1 should be given to parameter H07 H07 1 With this inlet open the unit is OFF when closed the unit is ON This option does no...

Page 27: ...tasks have been grouped by time intervals in a series of tables Maintenance responsibilities of the user see on page 25 1 3 2 Maintenance responsibilities of the user Like any other machine the HVAC...

Page 28: ...ts They should also be aware of general procedures and those applying specifically to this unit Contact a Johnson Controls Inc Authorised Technical Assistance Service for scheduled maintenance on this...

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