110
AHU Kit – Installation Instructions –
11/2021
Control
7
Case 3: 0–10 V demand control by an external BMS (available in medium and
advanced version only)
To set the CZ-CAPBC2 PCB (ACC-SP1A) for 0–10 V demand control by an external building
management system (BMS), perfom the following steps:
1.
Open the AHU Kit enclosure (see →
4.1.1 Installation of AHU Kit – MAH2/PAH2 – step 3,
2.
Only in case the setting of switch S3 must be modified, remove the upper mounting board.
Otherwise, proceed with step 3.
a. On the CZ-CAPBC2 PCB (ACC-SP1A), located on the rear side of the upper mounting
board, set switch S3 to “VOLTAGE” or “NO VOLTAGE”, depending on the BMS digital input
(DI) configuration.
Control via dry contacts (factory default)
= “NO VOLTAGE”
Control via 12 – 24 V DC signals
= “VOLTAGE”
12 –24 V DC
GND
b. Restore and fasten the upper mounting board in its original position.
c. On the terminal connector of Section C, located on the upper mounting board inside the
AHU Kit enclosure (see diagram below), connect the digital inputs (DI) as follows:
●
Heating start to COM and DI1
●
Cooling start to COM and DI2
●
Fan mode (free cooling) start to COM and DI3
●
All DI contacts open = Stop
Summary of Contents for PAW-280PAH3M-1
Page 2: ...Notes ...
Page 113: ...Notes ...
