Installation, Operation and Maintenance Manual
Marvel Mini
5
Subject to change without notice.
120.9-IM (1218)
AVAILABLE FUNCTIONS
The following is a listing of available functions please inquire with the local United CoolAir Distribution for unit design
configurations with these functions:
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One Compressor Staged ON/OFF or Digital
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One Heater Staged ON/OFF or Modulating or Hot Water Coil or Steam Coil for modulating control
valves at 0-10vdc output
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Modulating Humidifier controlled via Modbus Communications.
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Modulating Hot Gas Bypass for system capacity control
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Modulating Blower control for Variable Air Volume applications with VFDs communication via
Modbus to display critical information from the VFD to the Display where as previously important
information such as motor current, motor speed, voltage, kw hours was not supplied due to hard wire
configurations.
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Modulating Blower for Variable Air Volume applications via ECM motors
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Hot Gas Reheat either by Stage or Modulating
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Compressor safeties for high and low pressure are wired independently for true notification of which
failure High or Low Pressure
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An Air Switch has been incorporated to turn off cooling, heating, dehumidification, and humidification in
the event of a loss of air flow due to a broken v-belt or other means.
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On a heater high limit failure the heaters are locked out, but automatically reset when the safety resets
The display and alarm button will indicate an alarm occurred with the heating function
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Airside or Waterside Economizer
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Integrated Economizer function that allows Mechanical Cooling Compressors to assist is also available
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Networking of multiple units with Unit Lead Lag and Backup unit assist is built into the main software
platform so if multiple units are shipped to the field and the customer decides to network the units
together at a later date the software is already capable of networking up to 16 total units
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Building Management Systems via the following BMS Protocols is available: BACnetTM Modbus®,
Lonworks®, HTML Web Pages