Emmeti Heating Manifolds – Type 2
Example of domestic building with installed Type 2 manifold system
Type 2 manifolds can be used in heating applications not only for radiator or other heat emitter based systems but also for underfloor heating/cooling systems using a separate low temperature heat source or mixing valve control set. For radiator based or perimeter heating systems time and temperature control is centralised at the manifold allowing individual room temperature control if required. No TRV is needed in the room itself which can be controlled by a room thermostat or programmable room thermostat.
The thermostat is wired back to the manifold via a wiring centre which requires electrothermic heads on the return rail. This method is in compliance with Building Regulations Part L1 (conservation of fuel and power) and best practice GPG301, 302 and GIL 59 (CHeSS).
The function of the TRV (temperature control) and the lockshield (balancing) are now integrated on the manifold. More importantly, the electrical interlock required by Building Regulations Part L1 is provided directly by the thermostats controlling room temperature.
For underfloor heating systems, see details of our separate range of our Type 3 UFH Control Sets. The individual time and temperature control allowed by Topway Type 2 manifolds would be connected as for radiator systems using a wiring centre and one thermostat or programmable thermostat per underfloor heating zone.
You can download our Product datasheet for Topway T2 here : Emmeti-Topway-and-associated-products
commercial heating and plumbing solution
The advantages
This state of the art option is pre-assembled onto the bracket, making for quick and easy installation. It has an electrothermic body integrated for each return circuit, ready to be actuated by the electrothermic head. The electrothermic heads, via a wiring centre, are connected to the room thermostats located in each room or zone.
The manifold includes lockshields on the flow rail, double regulating for individual circuit isolation, and manual setting of flow control for heat balancing per radiator. It also includes automatic air vents and drain-off (filling) points as standard, and a standard option with integrated flow meters is also available. All of these reduce commissioning time, no longer having to physically move to each room or zone.
Integrated functions
Central control for distribution, manual isolation by circuit or by floor, commissioning of each zone by balancing, system air venting and automatic “electrical” flow isolation when a room is up to temperature. This also allows individual circuit purging.
Optional functions
Measuring of flow using flow meters, allowing reading of dynamic flow during balancing. Measuring of temperature using thermostats integrated into the ball valves, one on the flow and one on the return rail.
These aid installation by allowing the installer to verify the hot water is flowing, and how much, as well as what flow and return temperatures are being achieved.
Differential by-pass, to prevent pump wear and tear.
Time/temperature wall stats, with set back facility, for the individual zones or rooms.
Wiring centre, allowing boiler interlock and pump stop/start.
Individual room zoning
Energy saving
Installing this kind of system can save a significant amount of money on fuel bills. It is particularly appropriate for use with public access buildings, like offices, schools and hotels. However with the increasing emphasis on legislation to save energy in both new and existing homes, Emmeti Type 2 manifolds offer a cost effective solution to professional installers and specifiers in meeting today’s more stringent requirements.
Electrothermic actuation
Electrothermic bodies are integrated into the return manifold, one per circuit. They are almost identical to TRV (Thermostatic Radiator Valve) bodies.
An electrothermic head is mounted on top, at 2nd fix or final commissioning. This in turn is wired to a wiring centre (linking in to the boiler, pump and wall mounted room thermostats), which in turn is wired to each room or zone wall thermostat.
What happens
The electrothermic heads and bodies behave the same as a two port zone valve in a traditonal system. They also cost considerably less per circuit.
You are effectively zoning your heating by rooms or small areas, allowing individual tailored temperature control.
This means when a room or area gets up to temperature, the wall thermostat signals to the manifold electrothermic head (via the wiring centre), and that circuit is closed. This leaves the remaining circuits free to continue receiving heat. When all circuits have been actuated, closing flow to each, the wiring centre signals the pump (and boiler) to cease pumping (or providing heat).
Room Thermostats can be either simple electro-mechanical, electronic, or more sophisticated digital combined time and temperature units.
This allows you to choose the time period when you want the room to receive heat, and allows a choice of two temperatures (comfort and energy saving), the choice is dependant on time and use of the room.
For further details of our full range of controls, please see zone controls pages.
