Technical data

Energy Technology

Ltd.

If any part of the condensate pipe is to be run external to the building or is at risk of freezing, then the pipe must be

suitably insulated to protect from freezing.

If a suitable drain for accepting the condensate is not available nearby to, and below the boiler (e.g. boiler installed

in a basement below ground level location), then a suitable condensate sump receptacle with a discharge pump

should be installed below the boiler to remove the condensate to a remote drain.

When making the condensate pipe connection to the boiler, do not use adhesives, it is recommended to

lightly apply a suitable jointing tape (PTFE or similar) and use only light pressure to connect fittings to the

appliance to avoid damage to the condensate outlet assembly.

It is recommended that the condensate pipework should include a method of disconnection and cleaning points.

11.0 condensate

connection (contd.)

12.0 flue/combustion

air connection

The flue connection and combustion air inlet to the appliance are located on the top of the appliance, see fig 6.

These connections are arranged concentrically with the 70mm flue gas connection centrally within the 125mm air

inlet connection.

There are two options for flueing the MICROMAT EC boiler.

i) Conventionally, using flue gas tube only and air for combustion from the room or compartment in which the

appliance is installed. If using a conventional flue arrangement then the room or compartment must be

ventilated in accordance with the requirements of BS 6644 or BS5440 as appropriate. For guidance on

ventilation see section 15.

ii) Room sealed using concentric 70/125 components where air for combustion is taken from outside of the

building. When using a room sealed flue, where air for combustion is provided from outside of the building

directly to the appliance, ventilation to a compartment may still be required - See section 15 for general

space cooling.

Multiple Boilers

For detail and advice on common flues serving multiple boilers, contact RVR Ltd.

Important Note

Where the MICROMAT EC is to be installed in an application where the combustion air is likely to be contaminated

with oxidising agents, such as swimming pool areas, special industrial processes etc, then the

appliance must be room sealed.

Air Intake (70mm)

Exhaust (125mm)

Condensate

Connection

Condensate

Connection

Fig 5 Fig 6