Modulex EXT Commercial Series Boilers User Manual
CHAPTER 3: Technical Features & Dimensions
OMM-0095_0H
AERCO International, Inc.
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100 Oritani Dr.
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Blauvelt, NY 10913
Page
19
of
144
GF-139
Phone: 800-526-0288
09/15/2017
CHAPTER 3:
TECHNICAL FEATURES & DIMENSIONS
3.1 MODULEX EXT COMMERCIAL
TECHNICAL FEATURES
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Compact, gas fired, Low NO
x
, condensing boiler.
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Comprised of one sectional boiler body, suitable as a single boiler or in a cascaded group.
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May be installed in either an inside or outside location.
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Low internal water volume.
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Fast response to load variations.
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Flue exhaust outlet positionable on three sides.
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Manifold delivery and return.
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Made up of four or more heating elements (4 to 8), cast aluminum / silicon / magnesium.
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Full range of modulation by variable speed blowers and premix burners.
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Each heating element monitors its own water temperature, and will individually shutdown
if flow is interrupted, without affecting the other burner sections.
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One gas supply line.
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Individual modules capable of between 83 and 382.5 kBTU/hr.
These boilers are designed for use with category IV venting.
The boiler is supplied complete with all the safety and control devices in accordance with all
current regulations, and its technical and functional features comply with the regulations
prescribed by:
ANSI Z21.13 / CSA 4.9 - Gas-fired low pressure steam and hot water boilers.
3.1.1 Temperature Control Devices:
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Local NTC sensor (each heating element)
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Limit thermostat (each heating element)
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Flow NTC sensor (General)
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Return NTC sensor (General)
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Safety thermostat approved (manual
reset)
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Flow sensor BCM
3.1.2 Control Panel (E8) Includes:
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ON-OFF switch
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Temperature control / Boiler operation
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Fuses
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High limit sensors
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Air pressure fans
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Condensate level sensor
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Air pressure switch (anti-obstruction)
3.1.3 Other Features Include:
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NTC heat sensors for global temperature control on the flow and return.
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0-10 V output to control variable speed primary pump
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Integral insulation with hypoallergenic synthetic wool.
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Premix fiber mesh modulating burner (premixes into the fan with automatic diaphragm
backflow separation from the combustion chamber).
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Less than 49 dBA of noise at maximum power.
