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1. General Information
The Riva Heat Only is a high efficiency, non-condensing, wall mounted gas boiler
which provides central heat. The boiler features a gas valve which modulates the energy
input from 44,000 BTU/h to 108,000 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 floor
space.
• Several flue options available
• Electronic spark ignition
• Safety flow switch - positioned on the
main circuit, which monitors the flow
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
damage 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 controlled system test to ensuring
the motorized components within the
boiler do not become inoperable due
to lack of use.
• Gas valve modulation - the gas input
modulates based off central heating
temperature to within ± 2 ºF
• Diagnostic information system
equipped with three LED diagnostic
lights for quick error assessment.
2. Technical Information (M130.30CR)
GENERAL
Height in
27.7
Width in
15.7
Depth in
12.8
Weight lb
79.4
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
10
*At the minimum useful output
RIVA HEAT ONLY MANUAL - REV A
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