Domus CMX-S MEV Unit
Product Part Number
Domus CMX-S MEV unit - CMX-S
Description
Previously known as the Polypipe or Silavent Green Line CMX
At just 125mm in depth, the CMX is one of the most versatile, easy to install and energy efficient MEV solutions available on the market.
Ideal for installation in a wide range of properties, the CMX offers a depth of just 125mm, making it ideal for small ceiling voids or for where space is restricted. Fits into ceiling voids and utility cupboard spaces – horizontally or vertically
The 220x90 duct connectors can be converted to 150 round using additional adaptors if required.
Technical Features
- Max Airflow of 430m3/h
- Specific Fan Power (SFP) as low as 0.24 wls
- Dimensions (mm) 710 long x 340 wide x 125 high
- Fitted with two 220x90 duct connections allowing quick connection to ducts
- Suitable for a floor area up to 275m²
- The appliance has a low energy, high efficiency EC backward curved centrifugal impeller fan/motor assembly with sealed for life bearings suitable for +50ºC to -25 ºC.
Also referred to as System 3 in Approved Document F of the Building Regulations, an MEV system consists of a centralised ventilation unit that continuously extracts waste, polluted and moist air from wet rooms and can be discreetly positioned in either a cupboard, utility room, ceiling or loft space. An MEV system can be ducted throughout the dwelling and operated by the homeowner through a range of control options.
Controllability
Typically dual speed, MEV systems provide both low speed continuous trickle ventilation and high-speed boost flow when required. Replacement fresh air is drawn into the dwelling through background ventilators i.e. air inlets, located in the living areas.
The potentiometer-controlled speed selector allows accurate setting of 3 airflow speeds
The unit has 3 fully variable speeds for trickle and boost,
A switched live (LS) can also be used to select boost speed
An additional third speed (purge) is available using a second switched live connection.
Construction
PVC outer casing with an acoustic lining is included as standard, ensuring minimum noise levels.
Accessories
ANC848A Manual LOW/BOOST switch
Manual BOOST selection switch. LOW speed is engaged upon connection of mains supply. Both speeds are manually adjustable at the wiring centre to facilitate Building Regulation commissioning speeds.
ANC849A Manual OCCUPIED/UNOCCUPIED - LOW/BOOST switch
Manual BOOST and UNOCCUPIED selection switches. OCCUPIED/LOW speed is engaged upon connection of mains supply. UNOCCUPIED speed is intended to be lower than the OCCUPIED/LOW Building Regulation commissioning speed and should be selected when the property is vacant for extended periods such as holidays in order to save energy but keep the property ‘fresh’. There is no requirement or value in the Building Regulations for this speed and should be set to suit the individual client’s requirement. All three speeds are manually adjustable at the wiring centre to facilitate Building Regulation commissioning speeds.
ANC850A Manual LOW/BOOST/PURGE switch
Manual BOOST and PURGE selection switches. LOW speed is engaged upon connection of mains supply. PURGE speed is intended to be higher than the BOOST Building Regulation commissioning speed and should be selected during periods when exceptional levels of indoor pollution are encountered such overcooked food or paint fumes.
