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Raytherm®
Atmospheric Residential Boilers
Quit struggling with bulky, heavy, out-of-date cast iron
boilers. Raytherm copper fin tube residential boilers
are low-mass and have high recovery rates. They’re small
enough to fit almost any space and fuel-efficient for
utility savings. With five sizes to choose from, there
is a copper fin tube Residential for every home,
apartment or condominium.
Key Features
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5 Models
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42,000 to 180,000 BTUH
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Firing Mode
Models 42 & 66 – Single-stage
Models 90-180 – 2-stage
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Operates at 105 °F return water temperature without
condensing – perfect for the low-temperature needs
of radiant floor and snow melting systems
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Built-in pump and bypass offers maximum application
flexibility
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Honeywell S-8600 IID ignition eliminates off-cycle
fuel consumption; Standing pilot available on Models
90-180
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“Spark-to-hood” pilot eliminates erratic pilot
ignition and lockout
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Motorized Vent Damper prevents heat loss during
off-cycles
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Non-ferrous waterways option eliminates boiler
oxygen permeation problems associated with
non-barrier radiant tubing
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One-year parts and service warranty against defects
For complete product literature see the
Document
Library
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