Hyco SpeedFlow sf10l Installation & Operating Instructions page 3

2kw ubdersink unvented water heater
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DIAGRAM A – Pressure below 4.2 bar
DIAGRAM B – Cold draw off nearby
DIAGRAM C – Pressure above 4.2 bar
No accessories needed
Accessory SF1 needed to prevent
expanded warm water entering
Accessory SF2 needed to prevent
pressure relief valve
discharging constantly
cold water supply

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Speedflow sf15l

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