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CHILLER – FREEZER THERMOSTAT
Model RN5 (COMPATIBLE WITH RN2 / RN3 / RN4)
ATTENTION
Read carefully these instructions before installing and using this device and keep them for future reference. Attention to installation and electrical wiring. Use this device
only as described in this document and never use itself as a security device. The device must be disposed of in accordance with local standards for the collection of
electrical and electronic equipment.
DECRIPTION
RN5 is a thermostat for chiller or freezer cabinet, without plastic enclosure, suitable for all applications including the ones with anti-explosive standards and has the following
specifications: room and evaporator temperature is controlled with NTC / PTC sensors; 3 indication digits with resolution 0.5°C and 5 buttons; one serial input for controlling
the cabinet's door; 5 relays: compressor 16Α 250VAC, fan 10Α 250VAC, deFrost 10Α 250VAC, lamp 10Α 250VAC and door resistance in chillers or drainage resistance in
freezers 10Α 250VAC; defrosting may be electric or by hot gas; a buzzer in case of an alarm; it
using an interface with MODBUS protocol (see page 2 – Serial input of the thermostat). The device is mounted through panel hole and secured by screws.
THERMOSTAT'S DIMENSIONS
ATTENTION: Read carefully the technical specifications and make sure that the working conditions are appropriate. According to safety standards, the device must be fastened in such a way that
it cannot be removed without the use of tools.
Dimensions are in mm. The device is mounted through panel hole and secured by 3 screws (Φ=3mm).
INDICATIONS AND BUTTONS FUNCTION
Display indications
compressor ON
dFr
deFrost ON
fan ON
alarm ΟΝ
Loc
keyboard locked
malfunction ON
evaporator's
sensor is
- - -
deactivated
For more indications regarding the alarms please see the alarm's table at page 5.
UNLOCKING THE THERMOSTAT
By pressing at the same time
temperature measurement unit
C/
o
ADJUSTING ROOM'S TEMPERATURE – SET POINT
1.
Unlock the keyboard by pressing at the same time
2.
Press
to display the first parameter SPo.
3.
Press
to display its value. With
4.
Press
to save the new value. The cabinet is working properly with the new adjustment.
for 3 seconds, the countdown starts and the keyboard unlocks while the yellow small key on the display turns off. Instantly the
F is displayed. The keyboard locks automatically after 60 seconds of inertia.
o
or
change its value.
can connect to the monitoring and controlling network CAMIN via serial input
and the countdown starts for 3 seconds.
Keyboard
enter/exit the parameter's menu
confirm new value of a parameter
display the parameter's value
manual deFrost
ON/OFF lamp
down arrow
mute buzzer
ON/OFF cabinet
up arrow
display the evaporator temperature Τ2 (and the
room temperature if Set Point is constantly
displayed)
Firmware V2.2
1
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