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Installation
f.
2. Verify that the display of the maintenance remote controller is working.
3. Simultaneously press the "Spanner" and "Leave Home" buttons for at least 4 seconds.
Depending on which model you are using as maintenance remote controller, CZ-RTC2 or CZ-
RTC4, the buttons look differently and are located at different positions:
4. With the Temperature "UP" and "DOWN" buttons (▲▼) scroll to parameter "07".
5. With the Timer "UP" and "DOWN" buttons (▲▼) change the parameter value from the factory
default "000" to "001".
6. Confirm the new setting by pressing the "SET" button followed by the "Spanner" button.
7. After that, you can disconnect the maintenance remote controller from the outdoor unit PCB.
Method C: Adapting AHU capacity to PACi outdoor unit capacity
The last possibility is to adapt the AHU Kit capacity to match the capacity of the currently used
NX
PACi or PACi NX outdoor unit.
i
Important
Method C is applicable to the following combinations of PACi outdoor units and AHU Kits:
● PACi PEY/PE outdoor units (R410A) and PAH2/PAH3 AHU Kit models
● PACi PZ2/PZH2 outdoor units (R32) and PAH2/PAH3 AHU Kit models
● PACi NX PZ3/PZH3 outdoor units (R32) and PAH3 AHU Kit models
To change the relevant setting, invoke the „Detailed settings" mode on the AHU Kit's integrated
remote controller (CZ-RTC5B / CZ-RTC6BL).
1. Verify that the display of the integrated remote controller is working, then stop the system and
power it on again before performing the following steps.
60
Outdoor unit maintenance remote
controller
Optional special service wiring
(CV6242785082 or PAW-MRC)
Standard wired
remote controller
CZ-RTC4
(CV6233317854)
CZ-RTC2
CN-RC
CZ-RTC4
AHU Kit – Installation Instructions – 11/2021
Elite –
R32
U-71PZH2E8
U-100PZH2E8
U-125PZH2E8
U-140PZH2E8
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