CompTrol Interface V4.0.x | Issue 21-05-2021 | 1000932 71
Program 8 – direct frequency request
14.3.2 For SRC outdoor units: Set DIP switch S1 on the CompTrol Interface
Note
●
Make sure there is always a request during a setpoint/actual value comparison.
Procedure for SRC outdoor units
1. Replace the Thi-A sensor with a 5 kΩ xed resistor (see other applicable documents: Techni-
cal Manual for heat exchanger connection module).
2. Set the temperature setpoint on the wired remote control:
– When using to cool: Set temperature setpoint to 18 °C.
– When using to heat: Set temperature setpoint to 30 °C.
3. Disable the wired remote control to prevent the temperature setpoint from being changed.
– Alternatively: Disable the wired remote control via a signal to digital input X2b-D3. The
CompTrol Interface is set to Center.
4. Identify which SRC outdoor unit is installed on site (see “Table 51: Setting the outdoor unit
model with DIP switches S1-5 to S1-8” on page 71).
5. Set DIP switches S1-5 to S1-8 in line with the SRC outdoor unit installed on site (see “Ta-
ble 51: Setting the outdoor unit model with DIP switches S1-5 to S1-8” on page 71).
The table below shows the settings for the outdoor unit model using DIP switches S1-5 to S1-8:
DIP switch Outdoor unit model
S1-5 S1-6 S1-7 S1-8 FDC outdoor unit SRC outdoor unit
OFF OFF OFF OFF – –
ON OFF OFF OFF – –
OFF ON OFF OFF – –
ON ON OFF OFF FDC100VNX/VNX-W/VSX/VSX-W –
OFF OFF ON OFF –
SRC40ZSX-S/ZSX-W
SRC50ZSX-S/ZSX-W
ON OFF ON OFF FDC71VNX –
OFF ON ON OFF FDC100VN/VNA/VNA-W/VS/VSA/VSA-W –
ON ON ON OFF
FDC125VNX/VNX-W/VS/VSX/VSX-W
FDC140VNX/VNX-W/VS/VSX/VSX-W
–
OFF OFF OFF ON – –
ON OFF OFF ON – –
OFF ON OFF ON – –
ON ON OFF ON FDC125VN/VNA/VNA-W/VSA/VSA-W –
OFF OFF ON ON FDC140VN/VNA/VNA-W/VSA/VSA-W –
ON OFF ON ON FDC71VNX-W –
OFF ON ON ON – SRC60ZSX-S/ZSX-W
ON ON ON ON FDC200/250VSA –
Table 51: Setting the outdoor unit model with DIP switches S1-5 to S1-8
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