Pre-Installation
Greenstar Danesmoor Utility
ErP+
and Utility System
ErP+
- 6 720 821 720 (2018/04)
19
Maintenance clearances
Figure 25 shows the clearances required for maintenance.
Fig. 25 Maintenance and repair clearances
Minimum air vent area (cm
3
) for appliances installed in
compartments
Compartments
Follow the requirements of BS 5410 and note:
• Minimum clearances must be maintained.
• An access door is required to install, service and maintain the boiler
and any ancillary equipment.
• If fitting the boiler into an airing cupboard use a non-combustible
material (if perforated, maximum hole sizes of 13mm) to separate the
boiler from the airing space.
Venting compartments
There must be sufficient clearance around the appliance to allow proper
circulation of ventilation air. The clearances required for installation and
servicing will normally be adequate for ventilation.
• Ventilation must be provided for boilers fitted into compartments as
described in BS 5410.
• Combustion air must not be taken from a room or internal space
containing a bath or shower and must not communicate with a protected
area such as a hall, stairway, landing, corridor, lobby, shaft etc.
• Air vents must allow access for clean free air and must be sited to
comply with the flue terminal position requirements.
• Air ducting runs must not exceed 3m.
• Low level air vents must be less than 450mm from the floor.
• A warning label must be added to the vents with a statement to the
effect: ''Do not block this vent. Do not use for storage.”
Rooms containing a bath or shower
Refer to figure 26, the boiler must not be installed in zones 1 or 2.
The boiler can be installed outside the shaded areas.
Fig. 26 Bathroom zones
[2*]
Without end wall, zone 2 must extend 600mm from the bath
[*]
600mm radius from the bath or shower
4.8
Flue terminal positions
Model
Internal ventilation
External ventilation
High level
Low level
High level
Low level
12/18
198
297
99
198
18/25
275
413
138
275
25/32
330
495
165
330
Table 7 Conventional flue
Model
Internal ventilation
External ventilation
High level
Low level
High level
Low level
12/18
198
198
99
99
18/25
275
275
138
138
25/32
330
330
165
165
Table 8 Room sealed flue
600mm
300mm
5mm*
5mm*
380mm
1200mm
1155mm
6720808218-18.1Wo
WARNING:
Conventional flues
▶ Conventional flue boilers must not be installed in a
bathroom
WARNING:
Electric shock
▶ Any switch or appliance using mains electricity must
not within reach of a person using the bath or shower.
In all cases the installation must be in accordance with
the latest amendments in the latest edition of the IET
wiring regulations (BS7671)
NOTICE:
▶ All measurements are the minimum clearances
required.
▶ Terminals must be positioned so to avoid
combustion products entering the building.
▶ Support the flue at approximately one metre
intervals and at a change of direction, use suitable
brackets and fittings:
- flue bracket 125mm x 1 - part no.: 7 716 191 179-
▶ In spite of the dimensions given here, the terminal
must not be closer than 300mm to combustible
material, 600mm in the case of a thatched roof.
▶ Terminals must be positioned so to avoid products
of combustion accumulating in stagnant pockets
around the building or entering the building.
▶ Terminals must be at least 1.8m from an oil storage
tank unless a wall with of at least 30 minutes fire
resistance and extending 300mm wider and higher
than the tank is between the tank and the terminal.
NOTICE:
▶ Installations in car ports are not recommended.
▶ Dimensions from a flue terminal to a fanned air inlet
to be determined by the ventilation equipment
manufacturer.
▶ A flue terminal guard should be fitted over a terminal,
if persons could come into contact with the terminal,
or it could be subject to damage and where the
terminal is less than 2m from the finished floor level.
6720646608-124.4Wo
2*
*Radius 600mm
1
2
1
2
2
1
600mm
600mm
600mm
2250mm
2250mm
2*
*
*
*
