Sub-Zero SZ-CRC-1100A User manual

COLD ROOM CONTROLLER
SZ-CRC-1100A
USER MANUAL
www.pvrcontrols.com

Get to Know Your Controller
Parameter List
4
5
To set the cut-out point of the controller.
How to set other parameter.
SET POINT
To set Minimum allowable low Temperature
limit.
LOW SET ALARM
P3 Parameter
To set time delay between comp. relay restart
time.
ROOM PROBE CALIB
P5 Parameter
5
6
5
7
Items Included 4
Key Introduction 5
Index
DESCRIPTION
PARAMETER
Pg.
No.
01 CRC1100A
To set Maximum allowable High Temperature
limit.
HIGH SET ALARM
P2 Parameter 5
6
To set comp. Differential (Hysterisis).
ROOM PROBE DIFF.
P4 Parameter
To set room Probe offset calibration.
Operation 3
COMP. TIME DELAY
P6 Parameter
To set drip time for defrost water to drain out.
To set comp. relay status on room probe
failure
7
7
DRIP TIME
P7 Parameter
COMP IN PRB FAIL
P8 Parameter
Cyclic ON time. 7
CYC. ON TIME
ON Time Parameter
Cyclic OFF time. 8
CYC. OFF TIME
OFF Time Parameter
To set door open alarm delay. 8
DOOR ALARM DELEY
P9 Parameter
Evap. Fan stop coil temp. 8
FAN STOP TEMP.
L1 Parameter
To set time delay between Evap. fan relay
restart time.
8
FAN TIME DELEY
L2 Parameter
Evap. Fan operation when compressor is off. 8
FAN IF COMP OFF
L3 Parameter
Evap. fan differential (hysteresis). 9
COIL PROBE DIFF.
L4 Parameter
To set coil probe offset calibration (evap. fan
coil probe).
9
COIL PROBE CALIB
L5 Parameter
Evap. fan status during defrost. 9
FAN WHEN DEFROST
L6 Parameter
Index
DESCRIPTION
PARAMETER
Pg.
No.
CRC1100A
Evap. fan status on door open.
FAN WITH DOOR
L7 Parameter
9
Alarm to check Heater function.
Power on time delay for Alarm(HT/LT).
POWER ON ALM DLY
AL Parameter
To end programming.
2
End Parameter
END OF PROG.
Operating Messages and Icon Status.
6
To set Condenser delay to start before comp.
COND START DELAY
d1 Parameter
10
To set Condenser relay status during Hot gas
defrost.
COND WHEN DEF.
d2 Parameter
10
QUICK FREEZE SP
CS Parameter
To set quick freeze set point. 10
To set Quick Freeze time duration.
QUICK FREEZE DUR
Ct Parameter
10
To set / activate power up defrost cycle.
POWER ON DEFROST
E0 Parameter
10
To set type of defrost.
TYPE OF DEFROST
E1 Parameter
11
To set type of computation for defrost
frequency.
DEF. TIME CALC.
E2 Parameter
11
To set Defrost frequency.
DEF. FREQUENCY
E3 Parameter
11
To set Maximum defrost duration
MAX. DEF. DURATION
E4 Parameter
11-12
Defrost stop temperature (Evap. coil probe).
MAX. DEF. TEMP
E5 Parameter
12
HEATER CHK. FUNC
E6 Parameter
12
To set display during defrost.
DISP. DURING DEF
E7 Parameter
12
To set maximum defrost duration on coil probe
fail.
PROB. FAIL DEF. DUR
E8 Parameter
12
13
To lock keypad.
LOCK KEYPAD
LP parameter
13
Revert to factory set parameters.
RESET PARAMETERS
FS Parameter
13
13
13-14
Technical Data
Panel Cutout Dimensions
Wiring Diagram
14
15-16
17

04
CRC1100A
Operation
When operating in the field of refrigeration, temperature
controls is performed with a positive differential. The
compressor stops when the Setpoint temperature is
reached and restarts when the temperature reaches
setpoint plus the differential.
Two different defrost types can be selected : electrical (the
compressor is stopped) or at cycle inversion (warm gas;
the compressor keeps working). It is also possible to
select the interval between defrosts (and the interval count
type) and a maximum time (time-out) after which defrost
is interrupted. The same probe which controls the defrost
cycle is used to control the evaporator fans. It is possible to
set the temperature, the delay time after a defrost and the
relation of fans with the compressor.
A series of “safety controls” (delay at start-up, minimum
disable time, minimum time between activation) protects
the compressors from close starts. In case of probe error
or temperature alarm, the instrument signals the event
through acoustic signal and by closing the relay contact.
By pressing the mute key, the buzzer is silenced and the
relay contact is opened. The functions can be easily
customised by setting some programming parameters.
Other parameters allow to suit the instrument to various
applications.
Subzero Cold Room Controller CRC-1100A
Introduction
Features :
LCD with backlighting & 7 segment display to display all parameters.
2 NTC probes for cold room temp + evap. coil temperature.
O O O
Range: -50 C to + 50 C (1 C res.)
Relay outputs : Compressor + Heater + Evap. Fan + Cond. Fan + Alarm.
Audible alarm.
HP/LP/OSS trip protection for compressor.
Auto/Man defrosting facility (Time/Temp based).
Special Software to indicate probable heater fault.
Digital inputs : 2nos (a) Door Switch (b) Pressure cutout.
Compressor protection algorithm.
03 CRC1100A
Items included
NO.
1.
2.
3.
4.
QTY
ITEMS
MOUNTING CLAMP
NTC SENSOR 1.5 METER
3 X 20 SCREW
CATALOG
2
1
2
2
Down & Alarm
Key
UP & Quick
Freeze Key Set Key
Defrost Key
LCD Display
7 Segment
Display
LED
Indications
E
C
SET
SZ-CRC-1100A
Get to Know Your Controller

05 CRC1100A 06
CRC1100A
Sr. Parameter Parameter setting method
Range
Min Max Fac
Set
O
(CS+1) C O
0 C
1Set point Function : To set the cutout
point of the controller.
2To Set other
parameter
3
SET
O
(P2-1) C
O
(SP+1) C O 50 C O 50 C
P2 = Max allowable high
temp. limit.
CS = Quick Freeze Set Point.
Display will change to set
value and set value will flash
on display. The set point value
can now be changed by using
UP/DOWN key. After setting
the desired value, press the
set key and you will see “- - -”
which confirms that the set
point has been stored in
memory.
Press and hold set
key for 4 seconds
and release.
Hold UP and
DOWN keys
simultaneously for
4seconds.
Display will show P2 and will
flash. To go to other
parameters, use up/down
keys.
Function : To set maximum
allowable high temperature
limit.
Use UP/DOWN key to set
desired value.
Ones set at a particular value,
this will not allow the set point
to go above this value and
below Quick Freeze Set Point
(CS).
Example : Setting this
parameter at -25°C will not
allow the set point to go above
-25°C. Also, if the temperature
reaches -25°C , the display
will show Ht (High temp)
indicating that temperature
has gone above the value in
this parameter and at this
point the alarm relay and
buzzer will come on.
To change the
P2 parameter,
press the set key.
PROGRAMMING MODE
HIGH SET ALARM
P2 Parameter
Key Introduction
Defrost Key : To force a manual defrost, press defrost key for 4 seconds. The unit will go
into defrost mode. If E4 parameter is set to 0, or coil temp. is greater than defrost stop
temp. (E5) this key remain inactive.
SET
Mute Key : This key will mute the buzzer and reset the alarm relay, Down key .
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 set through quick freeze time duration (Ct) parameter and set pint through
Quick freeze set point (CS) parameter, UP key.
Set Key
No.
O
1 C O 20 C O 2 C
5Function : To set the comp.
differential (hysteresis).
(10°C + 2°C).
Use UP/DOWN key to set
desired value.
Differential between cutout
and cutin temperature can be
set between 1°C to 20 °C.
Example : If the set point is
set at 10°C and differential is
set at 2°C, then when the
system reaches 10°C, the
comp. Relay will cutout. Since
the differential is 2°C, the
comp. Relay will cutin at 12°C
P4 parameter,
press the SET key.
To change the
O
-10 C O 10 C O 0 C
6Function : To set room probe
offset calibration.
In time it may be possible that
the temp. on display may be
offset by a degree or so. To
compensate for this error, you
may need to add or minus the
degrees required to achieve
the correct temperature.
Example : The temperature
on the display is 28°C,
whereas the actual
temperature is 30°C. You will
need to set this parameter to
2°C, which means that once
out of programming mode, the
temperature will show
30°C(28°C + 2°C).
Use UP/DOWN key to set
desired value.
press the SET key.
To change the
P5 parameter,
PROGRAMMING MODE
ROOM PROBE DIFF.
P4 Parameter
PROGRAMMING MODE
ROOM PROBE CALIB
P5 Parameter
Example : Setting this
parameter at -30°C will not
allow the CS point to go
below -30°C. Also, if the
temperature reaches -30°C ,
the display will show Lt (Low
temp) indicating that
temperature has gone below
the value in this parameter
and at this point the alarm
relay and buzzer will come
on.
O
-50 C
O
(CS-1) C
O
-50 C
4Function : To set minimum
allowable low temperature
limit.
Use UP/DOWN key to set
desired value.
Ones set at a particular value,
this will not allow the CS (QF
Set Point) to go below this
value.
P3 parameter,
press the set key.
To change the
PROGRAMMING MODE
LOW SET ALARM
P3 Parameter

0Min 30MIn 3Min
7Function : To set time delay
between comp. relay restart
time.
This parameter is used to
protect the compressor from
restarting in a short period of
time. It can be set between
0 to 30Min.
Use UP/DOWN key to set
desired value.
Example : If this parameter
set at 3 minutes, the relay will
cutoff at set temperature, but
will not restart for a minimum
of 3 minutes, even if the
differential is achieved earlier.
This parameter is good to
protect the life of the
compressor or even in
applications where the probe
is placed at places where
there are sudden and short
changes in temperature like
above a cold room door.
P6 parameter,
press the SET key.
To change the
PROGRAMMING MODE
COMP. TIME DELAY
P6 Parameter
Use UP/DOWN key to set
desired value.
This is time for which the Fan,
Compressor, Condenser,
Heater will stay OFF so that
the defrost water can drip and
drain out. It can be set
between 0 to 20Min.
To change the
P7 parameter,
press the SET key.
0Min 20MIn 1Min8 Function : To set drip time for
defrost water to drain out.
PROGRAMMING MODE
DRIP TIME
P7 Parameter
0 2 1
9Function : To set comp. Relay
status on room probe failure.
0 = Compressor relay ON.
'on' minutes
two parameter). (see Sr.
performs a duty cycle of
2 = Compressor relay OFF.
Use UP/DOWN key to set
desired value.
1 = Compressor relay
9A and 9B)
and 'oF' minutes(see next
press the SET key.
To change the
P8 parameter,
2Min 60Min 10Min
9A Function : If P8=1 Cyclic ON
time .
Use UP/DOWN key to set
desired value.
This parameter will be
active only when P8 = 1.
This is cyclic ON time of
Comp relay.
To change the
On time parameter,
press the SET key.
PROGRAMMING MODE
COMP IN PRB FAIL
P8 Parameter
PROGRAMMING MODE
CYC. ON TIME
ON Time Parameter
07 CRC1100A 08
CRC1100A
3Min 20Min 4Min
9B Function : If P8=1 Cyclic OFF
time .
Use UP/DOWN key to set
desired value.
This is cyclic OFF time of
Comp relay.
This parameter will be
active only when P8 = 1.
Off time parameter,
press the SET key.
To change the
PROGRAMMING MODE
CYC. OFF TIME
OFF Time Parameter
O
-50 C O 50 C O 2 C
11 PROGRAMMING MODE
FAN STOP TEMP.
L1 parameter
Function : Evap. Fan stop coil
temp.
Use UP/DOWN key to set
desired value.
This setting is used to limit
maximum temperature
beyond which the evap. fan
will cutoff
To change the
L1 parameter,
press the SET key.
0Min 30MIn 10Min
10 Function : To set door open
alarm delay.
Use UP/DOWN key to set
desired value.
Example :
If P9 = 10 minutes, alarm for
door open fault will be
generated if door open fault
present for 10 minutes.
To change the
press the SET key.
P9 parameter,
PROGRAMMING MODE
DOOR ALARM DLY
P9 Parameter
0Min 99Min 1Min
12 Function : To set time delay
between evap. fan relay
restart time.
Example : If this is set 3
minutes, the evap. fan relay
will cutoff at the temp. set by
L1 parameter(Fan stop temp.)
but the fan will not come on
for a minimum of 3 minutes if
L4 is achieved earlier.
Use UP/DOWN key to set
desired value.
press the SET key.
To change the
L2 parameter,
PROGRAMMING MODE
FAN TIME DELAY
L2 Parameter
0 1 1
13
compressor is OFF.
Use UP/DOWN key to set
desired value.
0 = Evap. fan OFF when
when compressor will be
Example : If this parameter is
set to 1, then when comp.
OFF, evap. fan will remain
ON.
1 = Evap. fan will be stay ON
off.
To change the
L3 parameter,
press the SET key.
Function : Evap. Fan
operation when compressor is
off.
PROGRAMMING MODE
FAN IF COMP OFF
L3 Parameter

09 CRC1100A 10
CRC1100A
O
1 C O 20 C O 2 C
14
Example :
Use UP/DOWN key to set
desired value.
If L1 parameter(Evap. fan
stop temp.) is set to 2°C, and
the L4 is set to 2°C, then
evap. fan will cut off at 2°C
and restart only at 0°C.
To change the
L4 parameter,
press the SET key.
Function : Evap. fan
differential (hysteresis).
PROGRAMMING MODE
COIL PROBE DIFF.
L4 Parameter
Example : The temperature
on the LCD is 28°C, whereas
the actual temperature is
30°C. You will need to set this
parameter to 2°C, which
means that once out of
programming mode, the
temperature will show 30°C
Use UP/DOWN key to set
desired value.
In time it may be possible that
the temp. on LCD display
may be offset by a degree or
so. To compensate for this
error, you may need to add or
minus the degrees required to
achieve the correct
temperature.
(28°C + 2°C).
To change the
L5 parameter,
press the SET key.
O
-10 C O 10 C O 0 C
15 Function: To set coil probe
offset calibration (evap. fan coil
probe).
PROGRAMMING MODE
COIL PROBE CALIB
L5 Parameter
01 1 16
Use UP/DOWN key to set
desired value.
1 = Evap. Fan will stay OFF
during defrost.
0 = Evap. fan will stay ON
during defrost.
L6 parameter,
To change the
press the set key.
Function : Evap. fan status
during defrost.
PROGRAMMING MODE
FAN WHEN DEFROST
L6 Parameter
01
17
Use UP/DOWN key to set
desired value.
This parameter controls the
evap. fan on/off status
depending on the digital input
(Door input).
0 = Evap. Fan will stay ON
OFF with door fault.
1 = Evap. fan will turn stay
door fault.
L7 parameter,
press the SET key.
To change the
0
Function : Evap. fan status on
door open.
PROGRAMMING MODE
FAN WITH DOOR
L7 parameter
0sec 30sec 10sec
18 Function : To set Condenser
delay to start before comp.
Example : If this parameter
set to 10 sec and P6 = 3 min.
then condenser will turn ON
10 seconds before
compressor.
Use UP/DOWN key to set
desired value.
To change the
d1 time parameter,
press the SET key.
PROGRAMMING MODE
COND START DELAY
d1 Parameter
010
19 Function : To set Condenser
relay status during Hot gas
defrost.
Use UP/DOWN key to set
desired value.
during Hot gas defrost.
1 = Condenser will be ON
0 = Condenser will be OFF
during Hot gas defrost.
To change the
d2 time parameter,
press the SET key.
PROGRAMMING MODE
COND WHEN DEF.
d2 Parameter
O
P3+1 C O SP-1 C O
-5 C
20 Function : To set quick freeze
set point.
Use UP/DOWN key to set
desired value.
Example : If this is set to -
5°C, and quick freeze time
duration is set to 1 hr, then
when it is set to quick freeze
mode, the compressor will
take -5°C set point for 1 hr.
press the SET key.
To change the
CS parameter,
PROGRAMMING MODE
QUICK FREEZE SP
CS Parameter
0Hrs 30Hrs 0Hrs
21 Function : To set Quick Freeze
time duration.
See CS parameter.
Example :
This is maximum amount of
time allowed for Quick
Freeze. If set to 0, there will
be no quick freeze.
Use UP/DOWN key to set
desired value.
press the SET key.
Ct parameter,
To change the
PROGRAMMING MODE
QUICK FREEZE DUR
Ct Parameter
0 3 0
22 Function : To set / activate
power up defrost cycle.
This parameter will decide to
start power up defrost or not.
Use UP/DOWN key to set
desired value.
0= No power up defrost.
1= Power up defrost after 1 Hr.
Example : This parameter will
help to achieve first defrost
2= Power up defrost after 2 Hr.
3= Power up defrost after 3 Hr.
press the SET key.
To change the
E0 parameter,
PROGRAMMING MODE
POWER ON DEFROST
E0 Parameter

cycle in short amount of time
after power on. If E3 < E0 then
power up defrost cycle will be
ignore as frequency defrost
cycle achieved before power
up defrost cycle.
press the SET key.
To change the
E1 parameter,
0 2 0
23 Function : To set type of
defrost
Use UP/DOWN key to set
desired value.
case compressor off,
compressor on, heater on.
heater on.
1 = Hot gas defrost where
0 = Heater defrost in which
with E4 time duration.
Comp. Condenser, Heater
of defrost.
independent of evap coil
will be off during this type
2 = Time based defrost,
probe temperature. Works
PROGRAMMING MODE
TYPE OF DEFROST
E1 Parameter
0 1 0
24 Function : To set type of
computation for defrost
frequency.
This means that the time
calculation for defrost
frequency will be for the total
hours the unit has been
running.
1 = Sum of total compressor
operating times. This means
that for time calculation, the
unit will add the total time the
compressor has been in an
ON mode.
CRC-1100-A keeps a records
of the number of hours worked
+/- ½ hour, incase of a power
failure.
Use UP/DOWN key to set
desired value.
0 = Total of real time.
Example : If E3 is set to 6 hrs
and 3:40 hrs have passed
after unit has started and
power fails, then defrost cycle
will start after 3:30 hours when
power resumes.
To change the E2
parameter, press
the SET key.
PROGRAMMING MODE
DEF. TIME CALC.
E2 Parameter
1Hrs 31Hrs 6Hrs
25
This is the amount of time
between two defrost cycles.
Use UP/DOWN key to set
desired value.
To change the
E3 parameter, press
the SET key.
Function : To set Defrost
frequency.
PROGRAMMING MODE
DEF. FREQUENCY
E3 Parameter
0Min 99Min 30Min
26 Function : To set Maximum
defrost duration
PROGRAMMING MODE
MAX. DEF. DURATION
E4 Parameter
11 CRC1100A 12
CRC1100A
This is the maximum amount
of time allowed for a defrost.
If set to 0, there will be no
defrost cycle.
Use UP/DOWN key to set
desired value.
To change the
E4 parameter, press
the SET key.
O
-50 C O 50 C O 8 C
27
This is the maximum temperature
allowable at which the defrost
process will stop.
Use UP/DOWN key to set desired
value.
Example : If this parameter is
0
set to 7 C, then if defrosting is
in progress then when E5
0
temperature reaches 7 C, the
defrost process will stop.
E5 parameter,
To change the
press the SET key.
Function : Defrost stop
temperature (Evap. coil
probe).
PROGRAMMING MODE
MAX. DEF. TEMP
E5 Parameter
0 1 0
28
0 = No buzzer or indication.
the coil has not risen by
incase the temperature of
defrost time.(E4)
Activated when E1 = 0
(Heater defrost).
Use UP/DOWN key to set
desired value.
1 = Buzzer will come on
10 C within 50 % of the
E6 parameter,
press the SET key.
To change the
Function : Alarm to check
Heater function.
PROGRAMMING MODE
HEATER CHK. FUNC
E6 Parameter
0 1 0
29
temperature.
Use UP/DOWN key to set
desired value.
1 = display will show ' dF'
0 = Display will show room
during defrost.
press the SET key.
To change the
E7 parameter,
Function : To set display
during defrost.
PROGRAMMING MODE
DISP. DURING DEF
E7 Parameter
1Min 10Min 5Min 30 Function : To set maximum
defrost duration on coil probe
fail.
Use UP/DOWN key to set
desired value.
This is the maximum amount
of time allowed for a defrost
during coil probe fail.
Example : If this is set to 5
minutes, then defrost for
5minutes will take place
during coil probe fail.
To change the
press the SET key.
E8 parameter,
PROGRAMMING MODE
PROB. FAIL DEF. DUR
E8 Parameter

13 CRC1100A 14
CRC1100A
0Min 99Min 30Min
31
Use UP/DOWN key to set
desired value.
press the SET key.
To change the
AL parameter,
Function : Power on time
delay for Alarm(HT/LT).
PROGRAMMING MODE
POWER ON ALM DLY
AL Parameter
0 1 0
32
Use UP/DOWN key to set
desired value.
This parameter can lock the
keypad so that tampering is
not possible by by-standers.
1 = Activates keypad lock.
0 = De-activates keypad lock.
On activation, all the
parameters can only be
viewed but not modified.
press the SET key.
To change the
LP parameter,
39
Once the set key is
pressed,the control goes into
the normal mode and displays
the temperature and all
settings are recorded.
To end
programming press
the SET key.
0 1 0
33
Useful to debug setting
problems.
When set to 1, all parameters
are programmed to factory set
vales.
Use UP/DOWN key to set
desired value.
1 = Revert to factory set
parameters.
FS parameter,
To change the
press the SET key.
Function : To lock keypad.
PROGRAMMING MODE
LOCK KEYPAD
LP Parameter
PROGRAMMING MODE
END OF PROG.
End Parameter
Function : To end
programming.
Function: Revert to factory set
parameters.
PROGRAMMING MODE
RESET PARAMETERS
FS Parameter
Example : If you set this
parameter to 20min, once the
power is switch on, the alarm
for Ht/Lt will not activate for 20
minutes after the power is
switched on. This is most
useful to avoid the nuisance
alarms when the ambient are
high when machine is
switched on after long time.
Technical Data
Operating Messages and Icon Status
Message Description Parameter
Ht
Lt
PP
LP
Defrosting in progress
P7
P2
P3
SP, P4,P6
L1, L4,L2
E3, E4, E5
Temperature above the maximum
limit of the set point.
Temperature below the minimum limit
of the set point. (P3)
Comp. Relay On.
Comp. Relay Off.
Comp. Relay Timedelay.
Probe short circuit, circuit open or
without probe, or temperature
O O
> 50 C or <-50 C
heater fault)
Alarm (Ht, Lt, PP, HP/LP trip,
Keypad locked/unlocked.
Drip time On.
EEvap. Relay Off.
Evap. Relay Timedelay.
Evap. Relay On.
CCond. Relay Off.
Cond. Relay On.
Cond. Relay Timedelay.
P6, d1
* HP/LP TRIP *
OSS
HEATER FAULT
HP/LP/OSS (pressure) has tripped and
a signal has been sent through the
Digital Input.
O
Temp of coil has not risen by 10 C
within 50 % of the defrost time.
Mode
On
Off
flashing
On
Off
On
Off
On
On
On
Off
flashing
On
Off
flashing
Toggle
Toggle
On
Cond. Fan Relay : 8(3)A/250Vac.
Output :
Input : 2 NTC Probe.
O
Resolution : 1 C
Data Storage : Non-Volatile EEPROM Memory.
O
Accuracy : +/-1 C
O O
Storage temp : -20 C to 70 C (non-condensing).
O O
Operating Temp : 5 C to 50 C (non-condensing)
Power Input : 230Vac, 50-60Hz AC, Others on request.
Alarm Relay : 5A/250Vac.
O O
Range : -50 C to +50 C
Other Relay : 8(2)A/250Vac.
Housing : ABS Plastic.
Panel Cutout : 92X92mm.
< 2.5sq mm one wire/ terminal only.
Mounting : Panel.
Display : 2X14.2mm (0.56”) LED + LCD.
Dimensions : Front - 96 x 96 MM, Depth 85 MM
Connection : Screw Terminal.

15 CRC1100A 16
CRC1100A
Installation :
Fixing and dimensions :
UNITON
6 Hrs (E3 Parameter Setting)
DEFROST DEFROST
6 Hrs (E3 Parameter Setting)
6Hours 4Hours 6Hours
NoDefrost
ifE4=0
ManualDefrostPressed
asE4=0.NoDefrost
UNITON
6Hours 6Hours DEFROST
NoDefrostbecause,
O
coiltemp.>(8C)E5Parameter
UNITON
UNITON
4Hours DEFROST DEFROST
6 Hrs (E3 Parameter Setting)
ManualDefrost
KeyPressed
DependsonE4&E5Parameter
whicheverachievedearlier.
Panelcutout
92mm
92mm
30 Min (E4 Parameter Setting) 30 Min (E4 Parameter Setting)
30 Min (E4 Parameter Setting) 30 Min (E4 Parameter Setting)
30 Min (E4 Parameter Setting)
10mm
6mm
Max
85mm
90mm
CLAMP
Housing Back View
Housing side View

18
CRC1100A
CAUTION
Probe : To give a correct reading, the probe must be installed in a place
protected from thermal influences, which may affect the temperature to be
controlled.
Controller : Controller should be installed in a place protected by vibration,
water and corrosive gasses and where ambient temperature does not
exceed the values specified in the technical data.
WIRING : The probe and its corresponding wires should never be installed in a conduit
next to control or power supply lines.The electrical wiring should be done as shown in
the diagram. The power supply circuit should be connected to a protection switch. The
terminals admit wires of upto 2.5sq mm.
WARNING : 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 notice and does not represent a
commitment on the part of the company. In no event will the company be liable for
direct, indirect, special, incidental or consequential damage arising out of the use or
inability to use the product or documentation, even if advised of the possibility of such
damages. No part of this may be reproduced or transmitted in any form or by any
means without the prior written permission of the company.
Warranty : This product is warranted against defects in materials and workmanship
for a period of one year from the date of purchase. During the warranty period, product
determined by us to be defective in form or function will be repaired or , at our option,
replaced at no charge. This warranty does not apply if the product has been damaged
by accident, abuse, and misuse or as a result of service or modification other than by
the company This warranty is in lieu of any other warranty expressed or implied. In no
event shall the company be held liable for incidental or consequential damages, such
as lost revenue or lost business opportunity arising from the purchase of this product.
Disclaimer: This manual & its contents remain the sole property of PVR CONTROLS,
India and shall not be reproduced or distributed without authorization. Although great
care has been taken in the preparation of this document, the company or its vendors in
no event will be liable for direct, indirect, special, incidental or consequential damage
arising out of the use or inability to use the product or documentation, even if advised
of the possibility of such damages. No part of this manual may be reproduced or
transmitted in any form or 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.
1 2 345678 9
11
10 12 13 14 15 16 17 18 19 20 21
PHASE INPUT FROM
PRESSURE [HP/LP/OSS]
TRIP CONTACT
C
NONO NO CNO CNO
EVAP.
FAN
COND.
COMP.
DEFROST
(HEATER/
HOT GAS) ALARM 230V
NEUTRAL
DIGITAL I/P COIL ROOM
Suggested Wiring Diagram
NEUTRAL PHASE
C [13]
NO [11]
C [15] NO [14]
EVAPORATOR FAN
CONDENSOR FAN
NO [12]
COMPRESSOR
[2] 2
PHASE INPUT FROM
PRESSURE [HP/LP/OSS]
TRIP CONTACT
CONNECTOR
C [17]
NO [16]
NO [18]
HEATER
ALARM
17 CRC1100A

INDIA
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02 / 05.02.14