Keypad; Buttons And Relative Messages On Display - Gattetti LCA User Manual

Water chillers and heat pumps

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3.2 Keypad

The keypad allows to set the function parameters of the unit. In the wall-mounting remote version, it is composed of several

buttons to easy the use. The performance functions of each button will be indicated here below.

Setting and displaying the set point and the main control parameters (DIRECT parameters).

The DIRECT parameters are set-points (Cooling and Heating) and main control parameters of the unit (Cooling and Heating

differentials, 1 and 2 circuit water temperature, 1 and 2 circuit condensation temperature/pressure). If you press SEL for

more than 5 seconds the display shows the code of the first parameter - the Cooling set-point - that can be modified.

Pressing the

and

buttons allows to scroll all direct parameters. Press SEL again to display the required DIRECT

parameter and modify its value (with the

and

buttons). Press PRG to store the modified parameters and exit the

procedure, while the SEL button allows to return to the DIRECT parameters menu. On setting the parameters, the display

will automatically flash after a few seconds if no buttons are pressed.

If you do not press any button within 60 seconds after having entered this procedure, the unit will return to normal operation

without storing the values of the modified parameters.

Setting and displaying USER parameters

These "working" parameters are protected by a password (22) to prevent any unauthorized access to the data.

Press PRG for more than 5 seconds (the buzzer must be off) to enter the USER parameters (the unit "operating"

parameters) menu. Setting the password: "00" blinks on the display. Use the

and

buttons to select the password

value, or, if the password is correct (22), press SEL to enter the USER parameter section. On setting the password, the

display will automatically flash after a few seconds if no buttons are pressed. USER parameters selection: the display shows

the code of the User parameter that can be modified. Pressing the

and

buttons allows to scroll all User parameters.

Press SEL again to display the required User parameter and modify its value (with the

and

buttons). Press PRG to

store the modified parameters and exit the procedure, while the SEL button allows to return to the User parameters menu.

On setting the parameters, the display will automatically flash after a few seconds if no buttons are pressed. If you do not

press any button within 60 seconds after having entered this procedure, the unit will return to normal operation without

storing the values of the modified parameters.

RG66000889-REV.OO

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