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PRE-INSTALLATION CHECKS
1. VENTILATION
1.1 This appliance requires ventilation to supply combustion air.
Any room containing the appliance must have a permanent
air vent opening with a total free area of at least 550mm
2
per kW of appliance rated output above 5kW.
1.2 Increase air supply provisions where a room contains
multiple appliances.
1.3 If vents open into adjoining rooms or spaces there must be
an air vent of at least the same size direct to the outside.
1.4 Permanent air vents should be non-adjustable and
positioned where they are unlikely to become blocked.
1.5 Site the vents where cold draught is unlikely to cause
discomfort. This can be avoided by placing vents near
ceilings or close to the appliance, see Diagram opposite.
Without liner system (round)
mm 150 150 150 150 150
minimum dimension (dia.)
inch 6 6 6 6 6
Flue/Chimney Size
Without liner system (square)
mm 135 135 135 135 135
minimum dimension inch 5
1
/
2
5
1
/
2
5
1
/
2
5
1
/
2
5
1
/
2
Liner or factory made system (dia.)
mm
†
150 150 150 150 150
installed in accordance with manufacturers instructions
inch
†
6 6 6 6 6
Riva 40
Riva 55
Riva 66
Riva 66 Avanti
* When measured from the top of the stove to the top of the flue, with no horizontal sections
and a maximum of 4 bends with angles of less than 45°
†May be 125mm (5”) if only burning low volatiles (smokeless) fuels approved for use in Smoke Contol Areas.
See web site http://uksmokecontrolareas.co.uk for more information about approved fuels.
Model
Riva 40-RV 40/RV40B
Riva 55-RV 55/RV55B
Riva 66-RV 66/RV66B
Riva 66 Avanti-RV66 AVC
Riva 66-RV76/RV76B
Riva 76
Flue/Chimney
All Products
m 4.5 4.5 4.5 4.5 4.5
minimum height*
feet 13 13 13 13 13
Do not connect to systems containing large voids or over 9" (230mm) square/round