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9.10. FHU (Not Used)
This function enables the change in the kind of
regulation: from cooling to heating and vice versa.
9.11. Energy Saving Input
(ES)
The Energy Saving function allows you to change the
setpoint value as the result of the SET+ HES
(parameter) sum. This function is enabled until the
digital input is activated.
9.12. Configurable Input -
Holiday Function (HDY)
In Holiday function, the Energy Saving and defrost
cycles follow holiday times (Sd1...Sd6).
9.13. Digital Inputs Polarity
The digital inputs polarity depends on the I#P
parameters: CL (the digital input is activated by
closing the contact) and OP (the digital input is
activated by opening the contact).
FHU (Not Used)
10 Installation and
Mounting
The XM679 can operate without any user interface,
but normal application is with the CX660 keyboard.
The CX660 keyboard should be mounted on a vertical
panel, in a 29 mm x 71 mm hole, and secured using
the special bracket supplied.
Figure 10-1 - Installation and Mounting of CX660 Keyboard
The temperature range allowed for correct operation
is 0 to 60°C. Avoid places subject to strong
vibrations, corrosive gases, excessive dirt, or
humidity. The same recommendations apply to
probes. Allow air to circulate through the cooling
holes.
Figure 10-2 - CX660 Keyboard Dimensions
Installation and Mounting • 21
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