Carel k.Air, User Manual, Page: 103 / 192

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Functions k.air +030220981 rel. 1.2 - 01.12.2020
R if D escription D ev Min Max UoM D ir Modbus BAC net
V D I
Jb33 Countdown before the next inspection - 0 65535 - R IR540 PIV3854
Reset timings after the inspection - 0 1 - R/W CS375 BV375
Countdown before the next inspection - 0 65535 - R IR541 PIV3855
Reset timings after the inspection - 0 1 - R/W CS376 BV376
Jb36 Countdown before the next inspection - 0 65535 - R IR542 PIV3856
Reset timings after the inspection - 0 1 - R/W CS377 BV377
Countdown before the next inspection - 0 65535 - R IR543 PIV3857
Reset timings after the inspection - 0 1 - R/W CS378 BV378
Jb39 Countdown before the next inspection - 0 65535 - R IR544 PIV3858
Reset timings after the inspection - 0 1 - R/W CS379 BV379
Countdown before the next inspection - 0 65535 - R IR545 PIV3859
Reset timings after the inspection - 0 1 - R/W CS380 BV380
Jb42 Countdown before the next inspection - 0 65535 - R IR546 PIV3860
Reset timings after the inspection - 0 1 - R/W CS381 BV381
Tab. 9.bk
9.30 k.water integration
k.air has been developed to interact with k.water, a product for managing heating/cooling and hydronic distribution systems.
In summary, k.water:
• manages the heating, cooling, domestic hot water and solar thermal functions by controlling the request sent to the hea-
ting or cooling appliances, based on the outside air conditions and the demand for thermal energy from the terminal units
• guarantees the correct water temperature conditions in the distribution networks by controlling the actuators (pumps, valves,
etc.), so as to ensure the correct level of indoor comfort, minimising energy consumption.
Shared pGDX terminal
The pGDX terminal can be shared in a network of 1 k.water and up to 10 k.air units. The webserver HMI can easily switch betwe-
en the k.water and k.air controllers, meaning only one graphic terminal needs to be installed in the room. This is done following
the commissioning procedure, see the paragraph below.
Host name - Last four
digital MAC Address:
MACxx:xx:xx:xx:00:00
Temp. ---.- °c
Humd. ---.- %rH
SpGDX Y080
30220980_132_R01
A further feature of the pGDX is the possibility to use its built-in temperature and humidity probe as a confi gurable signal in the
I/O menu, for both k.air and k.water simultaneously. The last four digits of the MAC address, available on the pGDX product label,
need to be entered on screen Y080. Once the coordinates have been entered, the values will be available on the same screen.
Then enter the I/O confi guration menu, select the room temperature probe, for example, and associate the pGDX channel by
setting “SERIAL pGDX”
Shared outside temperature signal between k.air to k.water
k.air provides the outside temperature value, which can be used as an input channel by k.water. On k.water, screen Ba08, select
which k.air, from those available on the network, the outside air temperature will be read from.
Shared outside temperature signal between k.air to k.water
k.water provides the outside temperature value, which can be used as an input channel by k.air. On k.air, confi guration screen
Wb01, select the “kwater text” input channel.
Shared unit status
When k.air and k.water are connected together, they exchange information useful for commissioning the system and to cen-
tralise data when only k.water is connected to supervisor. For each k.air connected, k.water displays: unit status, supply and
return temperature, and humidity if enabled, outside air temperature, on/off fan status and speed. k.air displays the status of the
k.water unit, the operating mode (heating or cooling), the outside air temperature if enabled, and the supply temperature of the
associated k.air service circuit.