Information
Emmeti Underfloor Heating Manifolds Sales BrochureProduct and system guide with range information, product features and examples for Under Floor Heating applications
Emmeti Wall Hung Radiator Manifolds Sales BrochureProduct and system guide with selector tables, range information and examples for wall hung radiator manifold applications
Technical
Installation Guide T2 Heat pump control group U9700031 July 2013Installation Guide with Commissioning Instructions for T2 UFH Heat Pump Control Group U9700031
Why do I get a bubble in the top of the flow meter? There can be a small residue of air in the top of the flow meter. The higher the filling flow rate, the less air there generally is. As long as it is above the reading scale, it does not affect the reading. Over time, the air dissolves back into the water and will naturally disappear, as it is absorbed into the water.
How do I know what the temperature the water is when entering the control group? This unit is designed to be used where you have a low temperature heat source (like a heat pump) that has a verifiable flow output temperature. A verifiable return temperature is an asset.
Can you connect a copper pipe to any of Emmeti Manifolds? Yes but we only cater for 10mm and 15mm pipe
How do I set the pump flow? The pump we offer can be set to automatically adjust flow to match resistance, or can be set to a fixed flow using the instructions that are supplied.
How do I set the temperature coming in to the underfloor? This is set at the heat source, typically a heat pump. Usually, this will be higher than the temperature required for your underfloor heating, as there will be some heat loss, the amount of heat lossi s dependent on how far away the manifold supplying the UFH circuit is from the heat source.
How do I set the differential by pass valve on the T2 UFH Heat Pump?- Adjust primary / secondary pumps to give the total design flow rate for the manifold with the differential bypass valve set to maximum – 8
- Commission the manifold circuits as normal with the lockshield or flowmeters to give the design flow rate in each circuit
- Close off all circuits but one - with the highest resistance - then reduce the setting of the differential pressure bypass valve to give the designed flow rate
- Open up the other circuits and check that the design flow rate is still being achieved
In order to maximise circulating pump efficiency we now offer the Wilo Yonos Para RS25/6 - RKA.
This incorporates a high efficiency permanent magnet motor and powerful electronics which both help to reduce energy consumption and also protect the motor in use.
The Wilo Yonos Para more than meets the requirements of the Energy using Products directive (EuP). Its Energy Efficiency Index rating of 0.2 is clearly ahead of the requirement of 0.23 by 2015.
Can I isolate the manifold? Yes, as the T2 Heat Pump control group includes two isolating ball valves, located just before the manifold connections with red and blue handled butterfly handles and a three port diverting ball valve fitted just before the pump. These enable you to isolate the manifold for maintenance and commissioning.
Can I isolate the T2 Heat Pump control group? Yes as the T2 Heat Pump control group includes two isolating ball valves, located just before the manifold connections with red and blue handled butterfly handles and a three port diverting ball valve fitted just before the pump. This allows for isolation of the pump for repair or replacement and isolation of the control group and manifold with the bypass operating directly from primary flow to return.
How do I reduce incoming high pressure? Turn off the individual underfloor circuits until only one remains open: ideally this should be the circuit with the highest resistance. Adjust the by-pass valve to a lower setting until the designed flow / temperature drop is achieved in this circuit. Open the other circuits one at a time and ensure that the designed flow rates are being achieved
