8 RIVA PLUS COMBI MANUAL
General Information1.
Technical Information (M135.30CM)2.
The Riva Plus Combi is a high effi ciency condensing, wall mounted gas boiler which provides
central heat. The boiler features a gas valve which modulates the energy input from 49476
BTU/h to 116008 BTU/h. The boiler is shipped fully assembled with the components listed on
page 11. All units are pressure and combustion tested at the factory prior to shipping.
Key Features:
Wall mountable - saving valuable fl oor •
space.
Several fl ue options available•
Electronic spark ignition•
Safety fl ow switch - positioned on the •
main circuit, which monitors the fl ow and
protects the main heat exchanger from
thermal shock should there be a lack of
water in the system.
Frost protection - contains an integral frost •
protection system to prevent frost dam-
age which can occur in areas susceptible
to very cold weather conditions.
Boiler operation recognition system - •
should the boiler not be used for longer
than 24 hours, it then performs a con-
trolled system test to ensuring the motor-
ized components within the boiler do not
become inoperable due to lack of use.
Gas valve modulation - the gas input •
modulates based off central heating tem-
perature to within ± 2 ºF
Diagnostic information system equipped •
with three LED diagnostic lights for quick
error assessment.
GENERAL
Height in 31.6
Width in 15.7
Depth in 13.8
Weight lb 109.5
ELECTRICAL
Voltage V 120
Frequency Hz 60
Current A 1.6
Power consumption W 180
INJECTORS No. Size
Natural 14 130
Propane 14 89
CENTRAL HEATING
Maximum working temp. °F 185
Temp. Regulation range* °F 100-176
Maximum pressure psi 30.0
Minimum pressure psi 4.35
Max head loss (at 4.4 GPM) ft 8.25
*At the minimum useful output
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