Notes For The New Release - Carel IR32M Manual

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The instruments of the Infrared series with the serial number greater than 100,000 offer new useful

functionalities (see the following description) and at the same time they maintain the compability with the

previous series, retaining all their parameters.

Memorization of the minimum and maximum temperature. For all the models

This instrument allows the registration of the minimum and maximum temperature read by the ambient

sensor during an interval which can reach up to 199 hours (more than 8 days). To activate this function, operate as

follows:

select the parameter 'r5'=1. This is a 'Configuration' parameter.

Visualize the parameter 'rt' (type F parameter). By pressing the button 'SEL', the instrument visualizes

how

long (hours) the minimum and maximum temperature memorization has been active (if the

memorization

has just been enabled, rt will be associated to the value '0'). If you want to restart the

memorization of the temperatures, press the '

The instrument will clear the memorization hours and will start with monitoring again.

To visualize the max. temperature detected by the sensor, refer to the value associated with rH.

To visualize the min temperature detected by the sensor, refer to the value associated with rL.

After a maximum interval of 199 hours, the rH and rL values are cleared and the memorization will start

again.

Description of the new parameters

Enabling min. and max. temperature monitoring (0=no, 1=yes)

Effective interval of min and max. temperature monitoring

rH Max. temperature monitored on the rt interval

Min temperature monitored on the rt interval

These functions are now available on the IR32M model which – in addition to the insertion of the Ad delay–

allows – on the version with the infrared receiver – the modification of the high and low temperature alarms

by IR remote controller.

Particularly, the management of the energization delay of the temperature alarms (Ad) has been improved

on all the models here enclosed. Notice that it is possible to reset a temperature alarm simply by pressing

6 6

the '

' button for 5 seconds.

Warning: if the instrument is not connected to a UPS, a short power failure will clear the values rt, rL and rH.

When the voltage is supplied again, the controller will automatically start the monitoring again with rt =0.

Time defrosting. IR32Y, IR32C, IR32P and IRDRC models

The duration of the defrosting can be controlled by:

temperature according to the defrost sensor located on the evaporator. In any case the defrosting will be

deactivated after a max. security duration (selectable).The alarm Ed (defrost end for 'max. security

duration') can be disabled.

time, useful for special applications, like 'water defrost method'.

If the Ed alarm has not been deactivated, in case of intervention it is possible to clear it by pressing the

button '

' for 5 seconds at least. Notice that if you utilize the defrost by time, the second sensor can monitor

the air-off temperature. It is also possible to control the unit by a virtual sensor, that is proportional both to

the air-on and air off temperature. Important note: with the time defrosting, possible defaults of the second

sensor are non detected.

Description of the new parameters

Enabling Ed alarm (defrosting inhibited as the max. duration is

reached, dP parameter) 0=no, 1=yes.

Type of defrosting (0= resistance,

2= water or resistance by time, 3= hot gas by time)

Max. duration of the defrosting or effective duration if d0=2 or 3