Brochure
IDEAL FOR HOMES OR LIGHT COMMERCIAL
An outstanding choice for light-commercial
applications or any home with a separate indirect
hot-water source, our wall-mounted boilers free up
valuable oor space while maintaining maximum
comfort in your home.
BENEFITS UNIQUE TO Q SERIES
• The four “S” boiler models deliver energy-ecient
home heating and oer an optional 3-way diverter
valve to simplify installations that have an indirect
tank.
• Consistent temperature is delivered using a
thermostatic mixing valve in our Q175C combi
heating/hot-water boiler with an onboard 6.6 gallon
fully-insulated, indirect tank.
• There’s no wasted energy with the fully-modulating
boiler pump that uses just the BTU needed to meet
the immediate demand (The maximum BTU input
ranges from 85,000 to 205,000).
• Installation exibility allows venting up to a total of
200 feet – 100 feet exhaust and 100 feet intake.
➊Gas Valve
➋Fan
➌Exhaust/Intake
➍Stainless Steel Heat Exchanger
➎6.6 Gallon DHW Indirect
Tank (Q175C Model)
➏Boiler Pump
➐Integrated Thermostatic
Mixing Valve for DHW
HEATING AND HOT WATER IN ONE
COMPACT MODEL
Perfect for homes with 1 to 2 baths, E Series Combi
Boilers ensure homeowners won’t have to sacrice
continuous hot water.
BENEFITS UNIQUE TO E SERIES
• The space-saving, wall-mounted design integrates
the boiler pump and heating expansion tank
(Excluding the E50C boiler model).
• A plate-warming feature delivers faster hot-water.
• Continuous hot water is available via domestic hot
water priority.
• The design provides increased eciency to meet
your home’s needs, with a maximum BTU heating
input from 75,000 to 110,000.
• A stainless steel domestic hot-water plate heat
exchanger creates proven long-lasting durability.
• The E50C is specically designed for multifamily
applications or smaller single-family homes with up
to 1.5 baths with no secondary piping or closely-
spaced tees required
†
.
†
Not required if the pressure drop in any system loop(s) does not
exceed 4.6 feet of head at 4.5 GPM ow rate.
➊Gas valve
➋Fan
➌Exhaust/Intake
➍Stainless Steel
Heat Exchanger
➎DHW Plate Heat
Exchanger
➏Boiler Pump
➐Three-Way Motorized
Valve Allows Boiler
to Switch Between
Heating and DHW
➑Expansion Tank
Q SERIES E SERIES
Comfort, Eciency And Beyond. RINNAI CONDENSING BOILERS
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