State Water Heater Water Heater Brochure

RESIDENTIAL COMBI BOILERS
• A hot water tap is opened causing
incoming potable water to flow through
the flat plate heat exchanger.
• Heated boiler water, supplied from the
fire tube heat exchanger, flows through
a diverter valve and into the flat plate
heat exchanger where it prioritizes
heating the incoming domestic water to
the designated set point temperature.
• The integrated boiler pump circulates
boiler water through the fire tube
heat exchanger to keep it at set point
temperature.
• When there is a call for space heating,
the diverter valve directs the heated
boiler water into the external space
heating loop.
With a 10:1 turndown ratio, the
ProLine
®
XE combi boiler has the
ability to modulate combustion
to maximize efficiency and
prevent short cycling when there
are small heating demands.
ENERGY CONSERVATION
The ProLine
®
XE combi boiler
combines space heating and
domestic hot water (DHW) in
one appliance, providing a
space saving choice for builders
and specifying engineers.
COMPACT SIZE
The ProLine
®
XE Combi Boiler
provides up to 74% more
heating capacity than other
combi boilers. For domestic
hot water (DHW), it is also sized
large enough to provide 2.6 gpm
(110 model) to 4.8 gpm (199
model) at a 77°F temperature
rise.
MORE HOT WATER
DOMESTIC HOT WATER AND SPACE HEATING
HOW IT WORKS:
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