ideal commercial EVO S, Product & Flue Manual

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The ventilation requirements of these boilers is dependant on the type of flue system used, and their heat input.
All vents must be permanent with no means of closing, and positioned to avoid accidental obstruction by blocking
or flooding.
EVO S 50
Detail reference should be made to BS5440 Pt. 2. In IE refer to the current edition of I.S. 813.
The following notes are for general guidance only: If installed as a room sealed appliance in a room or internal
space, then no purpose provided ventilation is required. If installed as an open flued appliance in a room or internal
space then a permanent air vent is required. The sizes given below are for vents directly communicating with
outside air. For other situations refer to BS. 5440 Pt. 2. In IE refer to the current edition of I.S. 813.
If installed in a compartment, then permanent air vents are required at high and low level. These vents may
communicate direct to outside air, or to a room/internal space. If to a room/ internal space, it must itself be
adequately ventilated as above.
EVO S VENTILATION REQUIREMENTS (NOT EXCEEDING 70KW NET INPUT)
WHEN INSTALLED IN A COMPARTMENT
If the terminal is fitted less than 500 mm below plastic gutters, painted eaves or any other painted surface then an aluminium
shield at least 1m long should be fitted to protect the surface. For positioning of open flue terminals reference should be made to
BS. 5440 Pt. 1. In IE refer to I.S. 813:2002
Heat inputs in excess of 70kW nett.
For boiler installations with total heat inputs in excess of 70kW nett, reference should be made to BS6644.
In ie refer to I.S. 820:2000.
BOILER SIZE 50
Minimum vent free area (cm ² ) 255
ROOM SEALED APPLICATION
- MIN. VENT FREE AREA (CM ² )
OPEN FLUE APPLICATION - MIN.
VENT FREE AREA (CM ² )
TO A ROOM OR
INTERNAL SPACE
TO OUTSIDE
AIR
TO A ROOM OR
INTERNAL SPACE
TO OUTSIDE AIR
Boiler Size 50 50 50 50
High Level 580 290 580 290
Low level 580 290 1,160 580
VENTILATION