Stulz EC Tower ECD 91 - Page 58

58 EN/01.2019/G22 © STULZ GmbH – all rights reserved
EC TOWER TECHNICAL MANUAL
Set the DIP switches as shown in the tables below.
EC Tower - DIP switches of the MHI indoor unit board in junction box 2
EC Tower - DIP switches of the Interface III k board in junction box 2
You can nd further technical details in the “Annex” section.
MHI outdoor unit - DIP switches of the MHI outdoor unit board
S11 S12 S13 S14 S15 S16 S17 S18
Program 8:
Direct frequency request
For the outdoor unit model, see table for MHI outdoor unit - DIP
switches of the MHI outdoor unit board
OFF OFF OFF ON ____ ____ ____ ____
S21 S22 S23 S24 S25 S26 S27 S28
Master (ON)
Slave (OFF)
Messages No function Forced mode
All relay outputs
inverted
7-segment display
OFF OFF OFF OFF ON ON OFF OFF
Outdoor unit model DIP switch
FDC outdoor unit Enabled SRC outdoor unit Enabled S15 S16 S17 S18
- - SRC 40 ZSXS

OFF OFF ON OFF
- - SRC 50 ZSXS

FDC 71 VNX

- - ON OFF ON OFF
FDC 140 VS

- -
ON ON ON OFF
FDC 140 VSX

- -
- - SRC 50 ZSS

OFF OFF OFF ON
FDC 140 VSA

- - OFF OFF ON ON
- - SRC 60 ZSXS

OFF ON ON ON
FDC 200 VSA

- -
ON ON ON ON
FDC 250 VSA

- -
Outdoor units
DIP switch SRC 50 ZSS/ZSXS FDC 71 VNX FDC 140 VS(X)/VSA FDC 200 VSA FDC 250 VSA
SW61 ON ON ON OFF ON
SW62 OFF OFF OFF ON ON
SW63 ON OFF ON ON ON
SW64 OFF ON ON ON ON
NOTE
On series FDC71 to FDC250 outdoor air conditioning units, set DIP switch SW43 on the out-
door air conditioning units to ON.