Installation manual

Page | 39 PVT-MCT10A-EN
7.5 SFC Expansion Board Signals
Figure 19: SFC Expansion Board
Inputs (Red) (Do NOT Connect – Consult
Commissioning Documentation)
1. Heat Request Signal
2. Solar Resource Signal
3. MCT Attenuate Signal
4. UPS Signal
5. Unused (Jumper)
SF. Flow Switch
Outputs (Blue)
1. Pump/signal to BMS for solar pump
2. Desiccant System
3. Desiccant System
4. Desiccant System
NOTE: If your system does not have a component, confirm with your Chromasun customized
order. If your Chromasun customized order confirms that you do not have that component use
a wire to jumper their respective sensor inputs
NOTE: The connection for the inputs are made between the “+24V” and “IN” terminals.
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