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17

18

Technical Data:

Connections  

:

 Male Spade Connectors.                              

0

0

Operating Temp.   :

 5 C  to 50 C(non-condensing).

0

0

Storage Temp.  

 -20 C to 70 C(non-condensing).

Defrost Relay  

:

 10A/12VDC(res.).

Input  

:

 2 NTC Probe, SZ-N75.

0

Accuracy  

:

 +/- 1 C.

Mounting  

Flush panel mounting.

Power Input  

:

 230Vac

Housing  

:

 Black, ABS Plastic.

Data Storage  

:

 Non-Volatile EEPROM Memory.

Front Cover  

:

 Polycarbonate plastic.

Panel Cutout  

150mm X 31mm.

Range 

:

 -50.0°C to +50.0°C (0.1°C  res.).

0

0

Probe Tolerance at

 

25 C : 

+/-0.3 C.

Front Protection  : 

Front panel is water proof & IP64 rated.

Display

  

:

 3X14.2mm(0.56”) LED.

Compressor Relay : 

20A/12VDC(res.).

Fan Relay 

10A/12VDC(res.).

Light Relay 

:

 10A/12VDC(res.).

0

Resolution  

:

 0.1 C.

19

Suggested Connection Diagram

20

SZ-7534

prg

S

ET

RST

2

2

36 mm

185.5 mm

32.2 mm

134 mm

65.60 mm

56.55 mm

21.6 mm

30 mm

36 mm

15.5 mm

Panel Cutout

150mm

31mm

I5.2

Operating Messages and Icon status

Drip time On.

 L2, L1, L4,

P7

Comp. Relay On.
Comp. Relay Off.
Comp. Relay Timedelay.

Buzzer On.

On
Off
Flashing

On

On

Message

Description

Parameter

Mode

SP, P4, P6

Fan Relay Timedelay.

Fan Relay On.
Fan Relay Off.

2

On
Off
Flashing

Flashing Coil Probe fail.

AL

1

2

3

4

5

6

7

8

9

10

1

1

12

13

14

15

16

17

COIL

ROOM

NC

NO

NO

NO

NC

NO

+ 12VDC 

Digital input 

from Pressure

(HP/LP/OSS) 

Summary of Contents for sub-zero SZ-7534

Page 1: ...ate power up defrost cycle Quick Freeze time duration 10 11 E2 Type of computation for defrost frequency E3 Defrost frequency E4 Maximum Defrost duration E5 Defrost stop temperature Evap Coil probe 12...

Page 2: ...SOR 1 5 METER Key Introduction Quick Freeze This key used to put controller in quick freeze mode To activate this mode press QF key for 4 seconds The compressor operates in this mode for time duration...

Page 3: ...to set desired value To change do parameter press the set key L1 Parameter Function Evap Fan stop coil temp 0 C 50 0 50 0 0 C 0 2 0 C 10 5 6 Fact Set Range Max 10 0 C 0 0 C 30 Min 3 Min Description o...

Page 4: ...r press the set key Example This parameter will help to achieve first defrost cycle in short amount of time after power on If E3 E0 then power up defrost cycle will be ignore as frequency defrost cycl...

Page 5: ...Max 14 Description of parameters and functions Sr No Parameter Parameter setting method Fact Set Range Min Max E6 Parameter To change E6 parameter press the set key 24 Function To set Alarm on heater...

Page 6: ...of IP64 rated Display 3X14 2mm 0 56 LED Compressor Relay 20A 12VDC res Fan Relay 10A 12VDC res Light Relay 10A 12VDC res 0 Resolution 0 1 C 19 Suggested Connection Diagram 20 SZ 7534 prg SET RST 2 2 3...

Page 7: ...by any means without the prior written permission of the company PVR CONTROLS reserves the right to make and changes or improvements without prior notice 22 21 CAUTION Maintenance Cleaning Clean the...

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