Modulex Light Commercial Series
CHAPTER 3: TECHNICAL FEATURES & DIMENSIONS
OMM-0158_A
• 6/28/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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Ufly electronic controller included.
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BCM (Boiler Communication Manager) included.
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Ability to control power of the individual heating elements.
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Control of heat demand: constant or remote setpoint.
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Monitoring of operating status and temperature.
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Reporting of alarms.
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Setting of parameters.
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Emergency operation prevents the boiler from shutting down as a result of the interruption of
communication with a control system or any remote control unit.
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Alarm management and reset input.
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Warning alarm relay.
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Stainless steel condensate collector tank with siphon, drain trap, and smoke chamber.
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Easily removable stainless steel panels painted for outdoor installation.
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Built-in air vent
3.2 General Boiler Operation
The boiler is operated from the Ufly controller. The Boiler Control Manager (BCM) is used for
Modbus communication as well as backup operation.
The boiler management logic provides the maximum number of simultaneously operating heating
elements in order to maximize heat production and overall efficiency. Burner efficiency and a high
heat exchange between surfaces contribute to the reliable and efficient output power. The various
components are designed to work together so that operating time is shared equally among the
components, thus reducing maintenance and labor costs.
The hot water moved by the pump is pushed to the return of the primary flow of the hydraulic
separator. From here a second pump will distribute the hot water to the various destinations. The
cooled return water is drawn through the hydraulic separator to resume the cycle via the boiler.
W A R N I N G !
If installing to an outdoor location where freezing temperatures may occur, it is necessary to
install devices and/or materials to prevent any freezing in the condensate drain and the Flow and
Return manifolds. Failure to do so may cause serious damage to the equipment.
3.3 Boiler Freeze Protection
Should the boiler water outlet temperature decrease to less than 44.6°F (7°C), the system pump
will start, and all heat modules will start at minimum output until the minimum setpoint (BCM
Parameter 31) is reached. Such a protection device is exclusively for the boiler. For the
protection of the whole system, a second freeze protection thermostat is necessary to switch on
the heating system pump.
NOTE:
If glycol is used as antifreeze in the boiler, a back flow preventer must be installed in the
make-up/fill line.
