Appliance Locations And Clearances; Appliance Clearances; Compartments - Bosch Worcester Greenstar Utility 32/50 Installation, Commissioning And Servicing Instruction Manual

Pre-Installation
4.7

Appliance locations and clearances

▶ This appliance is only suitable for installing internally within a
property at a suitable location onto a fixed rigid, non-combustible
surface of the same size as the appliance and capable of supporting
the appliance weight.
▶ The appliance must be installed on a flat level surface to ensure
condensate does not enter the primary heat exchanger.
▶ The appliance is not suitable for external installation unless a suitable
enclosure is provided.
▶ The appliance is not suitable for roof space installations.
Open flue model (CF)
▶ In order to ensure clean and efficient combustion an adequate supply
of air must be delivered to the combustion chamber.
▶ To provide sufficient air a suitable inlet must be provided into the
room or space in which the appliance is situated.
CF minimum air inlet sizes
Output 32/50kW
2
Size cm
An air brick or other form of continuous air supply may have to be built
into the installation in order to ensure an adequate supply of air.
▶ If the appliance is to be installed in a confined space or compartment
two air vents are required, one at high level and one at low level.
The minimum free area of each vent is shown in figure 20 and
depends whether the air is taken from another room or from outside
the building.
▶ Where the air is taken from another room that room must contain an
air inlet as described above.
Room sealed balanced flue models (RS)
The appliance does not require a separate vent for combustion air.
▶ Installation in cupboards or compartments require permanent vents
for cooling purposes, one at high level and one at low level, either
direct to outside air or to a room.
▶ Both vents must pass to the same room or be on the same wall to the
outside air.
The minimum air vent free area is given in the table 9.
16
50/70kW
275 385
4.7.1

Appliance clearances

There are several clearances to be considered when either installing or
servicing a appliance in an unventilated or ventilated compartment.
Fig. 19 Appliance clearances
Clearance Installation
1 Overall height 1,398
2 Overall depth 1,395
3 Overall width 798
4 Above 300
5 Front 600
6 Side 100
Table 7 Clearances - Installation and Service/Maintenance
4.7.2

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
appliance and any ancillary equipment.
• If fitting the appliance into an airing cupboard use a non-combustible
material (if perforated, maximum hole sizes of 13mm) to separate
the appliance 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 appliances 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 duct 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."
Greenstar Utility
Dimension (mm)
Service/Maintenance
1,398
1,395
618
300
600
10
ErP - 6 720 821 751 (2018/04)