FMU 2012

M3V-HE Control Groups

The M3V is a pre-assembled control group which allows connection of low temperature UFH and high temperature radiators combined. For use with Topway Type 2 Manifolds, constructed in PPA composite, it includes an ErP compliant pump (Class B variable speed or Class C fixed speed), automatic air vent, drain/fill valves, mixing valve body for use with thermostatic or electronic actuators, differential bypass and swivel joints for direct connection to manifolds.

A range of accessories to suit M3V Control Group are available including, weather compensation kits, electronic actuators and thermostatic actuator.

Technical Data

28131800

M3V-F Control Group with fixed speed pump and auto by-pass valve

For use with Topway T2 manifolds, this Control Group allows for fixed control of water temperature for UnderFloor heating. Compatible with 200 and 210mm centre manifolds with adjustable manifold connections. Moulded in PPA resin with a Wilo Hu 15/6 class C pump, pump isolating valves, 2 differential pressure valves for both high and low temperature circuits, return balancing valves, drain/fill valves and flow and return temperature gauges.

28131820

M3V-V Control Group with electronic variable speed pump and auto by-pass valve

The M3V-V includes a Wilo E25/1-5 class B pump compliant with ErP Directive on Energy, and only one differential pressure valve. For use with Topway T2 manifolds, the M3V-V allows for variable control of water temperature for UnderFloor heating. Compatible with 200 and 210mm centre manifolds with adjustable manifold connections.

Please refer to the Emmeti Price List or contact the office on 01993 824900 for technical details.

Accessories Product range includes:

28139070

RCE Weather compensating kit for heating and cooling

28157210

3-point actuator for TM3, M3V Control Groups, FMU2 Floor Mixing Unit, FCU Floor Control Unit and Firstbox

90046750

Thermostatic actuator with remote sensor for TM3, M3V Control Groups and FMU2 Floor Mixing Unit

Downloads

Information

Emmeti Pricelist_2017_T3 UFH mixing_M3V-HE Control Group

Technical


Emmeti Underfloor Heating Manifolds Sales Brochure

Product and system guide with range information, product features and examples for Under Floor Heating applications

Emmeti Wall Hung Radiator Manifolds Sales Brochure

Product and system guide with selector tables, range information and examples for wall hung radiator manifold applications

Technical Product Guide M3V Control Group June 2013

Technical Guide covering range, product features, technical specification and connection information for M3V UFH Control Groups

FAQS

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 clean and flush out an underfloor heating system?
Both new and replacement systems (a system where a new boiler is fitted is classed as a replacement system) are required by the Building Regulations1 to be thoroughly cleaned and flushed and a water treatment inhibitor added to protect the system from further corrosion. This is also particularly important where an underfloor heating (UFH) system is added to an existing heating system, to prevent the new UFH system becoming contaminated by water in the older system which may be contaminated with corrosion sediment. For further details of how to do this consult the following guides and code of practice:  
  1. Domestic Building Services Compliance Guide
  2. BS 7593 – Code of practice for treatment of water in domestic hot water central heating systems
  3. BSRIA Guide BG29/2012 - Pre-Commission Cleaning of Pipework Systems
  4. BSRIA Guide BG 4/2011 – Underfloor Heating and Cooling


Can you connect a copper pipe to any of Emmeti Manifolds?
Yes but we only cater for 10mm and 15mm pipe

How do I replace the swivel joints on older model FMU Floor Mixing Units?
Purchase code 01306460 1"M x 1" Female Union coupling and gasket.

How do I replace the flow meters on FMU Floor Mixing Units?
Purchase code 01306302 0 - 4 l/min, 1/2" MBSP metal threaded.

Why is the amount of water in the flow meter different on different occasions?
The initial amount of air can vary depending on your fill flow rate. Then it will be affected by your pump pressure, the higher the pressure, the less air that will be visible (as air is compressed under pressure). Over time, the air dissolves back into the water and will naturally disappear, as it is absorbed into the water.

Does flow affect the amount of water in the flow meter?
The initial amount of air can vary depending on your fill flow rate. Then it will be affected by your pump pressure, the higher the pressure, the less air that will be visible (as air is compressed under pressure). Typically, you can evidence this, between when the pump is running, and when the pump is off.  Over time, the air dissolves back into the water and will naturally disappear, as it is absorbed into the water.