Biasi Riva Combi Installation & Operation Instructions page 9

2.Technical Information Cont.
ENERGY CAPACITY
Nominal heat input
(0/2000ft)
Nominal heat input
(2000/4500ft)
Minimum heat input
Maximum useful output
(0/2000ft)
Maximum useful output
(2000/4500ft)
Minimum useful output
GAS SUPPLY PRESSURE
Gas Normal
Natural inwc
Propane inwc 11.0
GAS PRESSURE AT BURNER
Gas
Natural inwc
Propane inwc
FLUE DESIGN
Minimum Venturi pressure
Flue pipe diameter
Coaxial
Twin split pipes
Nominal heat flow rate
(0/2000ft)
Nominal heat flow rate
(2000/4500ft)
Min Exhaust temperature
Max Exhaust temperature
INJECTORS
Natural
Propane
RIVA COMBI MANUAL - REV B
MBH 122.8
MBH 116.7
MBH 49.5
MBH 100.7
MBH 95.9
MBH 37.0
Min Max
7.0 3.5 10.5
8.0 12.0
Min Max Ignition
0.8 5.3 2.4
1.4 9.0 5.2
inwc 0.66
2.25/4
in
3.25/5
in 3.25/3.25
MBH 122.8
MBH 116.7
°F 255
°F 302
No. Size
14 130
14 89
GAS FLOW RATE
Gas
Natural ft³/h
Propane lb/h
ELECTRICAL
Voltage
Frequency
Current
Power consumption
FLUE GAS FIGURES
Gas
CO
2
O
2
CLEARANCE TO COMBUSTIBLES
Front
Back
Top
Sides
Bottom
Flue pipe enclosed
Flue pipe free air
Min Max
48.7 121.1
2.23 5.55
V 120
Hz 60
A < 1.6
W 176
Min Max
2.2% 6.9%
17.0% 8.6%
in 18
in 0
in 8
in 2
in 8
in 2
in 0
9