+ Q: Which setting should the pump be on?
A: Usually, the setting out of the box will be sufficient. In order to meet the flow levels that your design requires this can be changed. We suggest starting with CPI (Constant Pressure I) and then building up to level III if required.
+ Q: Do I need a mixing pumpset if I am using a heat pump?
A: No. UFH needs water around 40-50 degrees and the water temperature is lower coming from a heat pump. A mixing pump would only be required if your water temperature were higher coming from a boiler for central heating (usually 65-70 degrees).
+ Q: The temp gauge on the top does not match the temp set on the dial at the bottom. What is the problem?
A: Firstly, check where you are reading the temperature from on the mixing valve dial, as it needs to be read from where the arrow is pointing (which is not usually at the front). Otherwise, it could likely mean that the mixing valve is not mixing flow and return. The pressure could be too high from the pump at the heat source, the mixing pump needs to be increased to force more cooler water through or the setting on the bypass valve could be increased in order to reduce the pressure going to the manifold pump.
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