Carel IR33 Handbook

Updated:
17/03/2010
Ver. 1.1
Eng
Pag.5/12
HOW TO CHECK
CAVITY PROBE
TEMPERATURE
To check current temperature measured by a single installed probe,
proceeds as follow:
1. refers to the previous step how to get in the configuration
parameter session - type C parameter
2. scroll the configuration parameter list, by using UP/DOWN
buttons, until display shows the parameter /C1 (calibration or
offset for cavity probe)
3. press SET button
4. display shows the probe calibration value, used to correct the
temperature measured by the probe by means of an offset
5. Press again SET button
6. display shows the current temperature value measured by the
probe
7. press SET button to return to display of the parameter code /C1
HOW TO CHECK
EVAPORATOR
TEMPERATURE
Current evaporator probe temperature is available by means of the
parameter /C2 (calibration or offset for evaporator probe)
To check temperature value proceeds as previously indicated from step 1
to step 2, considering the configuration parameter /C2
HOW TO CHECK
CONDENSER
TEMPERATURE
If the condenser probe is installed it is possible to check condenser
temperature by means of the parameter /C3 (calibration or offset for
condenser probe)
To check temperature value proceeds as previously indicated from step 1
to step 2, considering the configuration parameter /C3
BE CAREFUL ⇒ DO NOT ADJUST THE
CALIBRATION VALUE

Carel IR33 Specifications

General

Model	IR33
Category	Controller
Outputs	Relay outputs
Inputs	Configurable digital/analog inputs
Communication	RS485 Modbus RTU
Buzzer	Yes
Number of Relays	3
Number of Analog Inputs	2
Analog Input Type	NTC, PTC
Relative Humidity	20% to 90% non-condensing