78 CompTrol Interface V4.0.x | Issue 21-05-2021 | 1000932
Program 9 – direct frequency request with cascading
15.3 Setting the outdoor unit model via DIP switch S1
15.3.1 For FDC outdoor units: Set DIP switch S1 on the CompTrol Interface
Procedure for FDC outdoor units
1. Set DIP switch SW4-3 on the outdoor unit PCBs of the FDC outdoor units to ON (see other
applicable documents: FDC series Technical Manual).
2. Identify which FDC outdoor units are installed on site (see “Table 56: Setting the outdoor unit
model with DIP switches S1-5 to S1-8” on page 79).
3. Set DIP switches S1-5 to S1-8 in line with the FDC outdoor units installed on site (see “Ta-
ble 56: Setting the outdoor unit model with DIP switches S1-5 to S1-8” on page 79).
4. On both CompTrol Interface expansion modules, use DIP switches S2-3 and S2-4 to set the
signal ranges with or without signal overlap (see “15.4.1 Setting the signal ranges via DIP
switch S2” on page 82).
15.3.2 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:
Technical 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 units are installed on site (see “Table 56: Setting the outdoor unit
model with DIP switches S1-5 to S1-8” on page 79).
5. Set DIP switches S1-5 to S1-8 in line with the SRC outdoor units installed on site (see “Ta-
ble 56: Setting the outdoor unit model with DIP switches S1-5 to S1-8” on page 79).
6. On both CompTrol Interface expansion modules, use DIP switches S2-3 and S2-4 to set the
signal ranges with or without signal overlap (see “15.4.1 Setting the signal ranges via DIP
switch S2” on page 82).
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 –
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