Mounting and Installation
The instruments are suitable only for internal use. Instruments shall be mounted on panel, in a 29x71 mm hole, and xed using the
special brackets supplied.
The ambient operating temperature range is between -10–60°C.
Avoid locations subject to heavy vibration, corrosive gases or excessive dirt. The same applies to the probes. Ensure ventilation
around the instrument.
First installation
At rst installation, it’s necessary the following:
1. Select the kind of gas.
2. Set the range of the pressure probes.
In the following paragraph a short cut for the above operations.
Chapters 10 Parameters programming and 16 will show in detail these operations.
• How to set the kind of gas
The controller has memorized the relation between temperature and pressure for some gases.
The pre-set gas is: R404.
If another gas is used, act as in the following:
1. Enter the Programming mode by pressing the Set and DOWN key for 3s.
2. Select the “Pr2” parameter. Then enter the password 3 2 1 0.
3. Select the FtyP, kind of gas, parameter.
4. Press the “SET” key: the value of the parameter will start blinking.
5. Use “UP” or “DOWN” to change the gas among the following: r22= R22; r404=R404A; 507=R507; 134=134; r717= ammonia.
6. Press “SET” to store the new value and move to the following parameter.
To exit: Press SET + UP or wait 30s without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.
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