General Information; Ventilation Information - Worcester Greenstar Danesmoor Utility ErP 32/50 User Instructions

5

General information

5.1

Ventilation information

Boiler location
**The boiler can be installed under a work top as long as:
▶ The work top above the boiler is easily removable for
maintenance.
▶ There is at least 10mm clearance above the boiler.
▶ The front of the boiler is not enclosed.
Ventilation
Air vents must be functional at all times and the air supply must
not be restricted or contaminated.
The boiler clearances must meet the minimum shown below for
servicing and venting purposes.
* If this clearance is less than 75mm the flue "knock-out" panel
sections must be removed to improve air circulation and
cooling.
Do not place clothes or objects to hinder the air circulation
required by the boiler.
ANNUAL
SERVICE CLEARANCES
1415mm
10mm
600mm
Fig. 3
Conventional flue boilers require an adequate supply of fresh
air which must be delivered to the boiler for combustion
purposes through a permanent inlet, such as an air brick, into
the area where the boiler is situated.
Greenstar Danesmoor Utility
720mm
30 0mm
10mm
ErP – 6 720 813 330 (2014/09)
If a cupboard or compartment which is to be used for storage or
airing is built around the boiler after installation there must be
a non-combustible partition around the boiler. Further
information can be found in BS 5410 which also describes
venting requirements.
Conventional flued boilers
Minimum area of air inlet for combustion:
248cm2 for 32/50kW appliances
358cm2 for 50/70kW appliances
Minimum air vent area (cm2) for boilers installed in a
compartment
Conventional flue
kW Internal ventilation
High Level Low Level High Level Low Level
32/50 495
50/70 715
Table 2
1) Internal air to and from a space/room inside the building.
2) External air to and from directly outside the building.
Room Sealed flue
kW Internal ventilation1)
High Level Low Level High Level Low Level
32/50 495
50/70 715
Table 3
General information
1)
External ventilation
743 248 495
1073 358 715
External ventilation2)
495 248 248
715 358 358
2)
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