Sub-Zero SZ-7512-P Operating Instructions

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Introduction:
SZ-7512-P(Antifreeze thermostat)
Operating Instructions
The SZ-7512-P is a digital antifreeze thermostat with manual reset
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
Set point Function: T
point of the controller.
Press and hold
Display will change to set range
the SET
flash. The set point range can now
key for
be changed by using the
2 seconds.
UP/DOWN keys. After setting the
desired range, press the SET key
and you will see"_ _ _" which
confirms that the set point has
Fac.
Min Max
been stored in memory.
O O
O
C C
-50 C 3
50
3
INDIA
O
o set the cut out
OPERATING
INSTRUCTIONS
SZ-7512-P
INDEX
Para. Page Description
3 To set the Set Point of the controller.
4 How to set other parameters.
P5 5
Probe calibration.
LP 6 Keypad lock.
AL 7 Alarm - to activate buzzer.
8
FS Restore factory defaults.
9 End Programming & keypad functions.
EP
10 Operating messages.
12 Wiring Diagram.
13-14 Panel cutout & dimensions.
2
To set other
parameters.
Press and hold Display will show 'P5' & flash
DOWN(prg) to go other parameters, use
key for UP / DOWN keys.
2 seconds.
prg
4