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RT-PRC001-EN6
Features and
Benefits
Drum and Tube Heat Exchanger
• The heat exchanger is manufactured
using aluminized steel with stainless
steel components for maximum
durability. The requirement for cycle
testing of heat exchangers is 10,000
cycles by ANSI Z21.47. This is the
standard required by both UL and AGA
for cycle test requirements. American
Standard requires the design to be
tested to 2½ times this current
standard. The drum and tube design has
been tested and passed over 150,000
cycles, which is over 15 times the
current ANSI cycling requirements.
• The negative pressure gas valve will
not allow gas flow unless the
combustion blower is operating. This is
one of our unique safety features.
• The forced combustion blower supplies
pre-mixed fuel through a single
stainless steel burner screen into a
sealed drum where ignition takes place.
It is more reliable to operate and
maintain than a multiple burner system.
• The hot surface ignitor is a gas ignition
device which doubles as a safety device
utilizing a continuous test to prove the
flame. The design is cycle tested at the
factory for quality and reliability.
• Our gas/electric rooftops exceed all
California seasonal efficiency
requirements and perform even better
than the California NOx emission
requirements.
Drum and Tube Heat Exchanger
Hot Surface Ignitor
Negative Pressure Gas Valve
Forced Combustion Blower