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SZ-7512-P

OPERATING

INSTRUCTIONS

4

To set other
parameters.

Display will show ‘P5’ & flash 
to go other parameters, use
UP / DOWN keys.

Press and
DOWN(prg)
key for
2 seconds.

 hold 

prg

Introduction: 

SZ-7512-P(Antifreeze thermostat)

Operating Instructions

The SZ-7512-P is a digital antifreeze thermostat with manual reset 

O

facility and alarm (Buzzer) facility, this has a fixed differential of 2 C  
The  SZ-7512-P  can  be  used  as  a  direct  replacement  to  the 
following mechanical antifreeze thermostats :-

(a) Honeywell T675-B, (b)  Danfoss-KP61, (c) Ranco-6953, 

(d) Johnson A19ACA-15C,(e) White Rodgers 16A60-9.

The alarm is automatically set equal to the set point and can be 
muted with the ‘RST’ key.

The  controller  functions  similar  to  the  above  mentioned 
mechanical thermostats i.e. relay will go off when the set point is 
achieved and the same can be restarted only if the differential is 
reached and the ‘RST’ key is pressed.

1

INDEX

2

Para. Page

Description

P5

LP

AL

FS

EP

3

4

5

6

7

8

9

10

12

13-14

To set the Set Point of the controller.

How to set other parameters.

Probe calibration.

Keypad lock.

Alarm - to activate buzzer.

Restore factory defaults.

End Programming & keypad functions.

Operating messages.

Wiring Diagram.

Panel cutout & dimensions.

3

Function: T
point of the controller.

o set the cut out

Display  will  change  to  set  range   
flash. The set point range can now 
be  changed  by  using  the 
UP/DOWN keys. After setting the 
desired range, press the SET key 
and  you  will  see“_  _  _"  which 
confirms  that  the  set  point  has 
been stored in memory.

Set point

Press and
the SET
key for 
2 seconds.

 hold 

   -50

O

C

50

O

C

3

O

C

Min

Max

Fac.

www.ascontrols.com

INDIA

Summary of Contents for SZ-7512-P

Page 1: ...he above mentioned mechanical thermostats i e relay will go off when the set point is achieved and the same can be restarted only if the differential is reached and the RST key is pressed 1 INDEX 2 Para Page Description P5 LP AL FS EP 3 4 5 6 7 8 9 10 12 13 14 To set the Set Point of the controller How to set other parameters Probe calibration Keypad lock Alarm to activate buzzer Restore factory d...

Page 2: ...eter 0 1 1 Function To activate deactivate alarm To change the AL parameter press the SET key Use the UP DOWN keys to set alarm on or off Once set to on the buzzer will come on incase the temperature is equal to the set point 1 Activates Buzzer 0 Deactivates Buzzer Note Alarm will be ON in probe fail condition irrespective of AL parameter Min Max Fac FS Parameter Function To restores default setti...

Page 3: ...RNING Improper wiring may cause irreparable damage and personal injury Kindly ensure that wiring is done by qualified personnel only Maintenance Cleaning Clean the surface of the controller with a soft moist cloth Do not use abrasive detergents petrol alcohol or solvents Notice The information in this document is subject to change in order to improve reliability design or function without prior no...

Page 4: ...ssion further manufacture other use or resale of the products whether used alone or in combination with any other products or materials ASCPL makes NO other warranty expressed or implied and makes no warranty of merchantibility or fitness for any particular purpose From time to time buyers might call to ask ASCPL for technical advice based upon limited facts disclosed to ASCPL If ASCPL furnishes t...

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