Installation, Operation and Maintenance Manual
Marvel Mini
34
Subject to change without notice.
120.9-IM (1218)
This is the home screen within the System Status If no
buttons are pressed within 5 minutes, the displayed screen
will revert back to this displayed screen showing Day of the
Week, Time of Day and Date The main readings are also
displayed here as well as operating status The displayed
readings may change based on system setup For instance,
if Space Temperature and Space Humidity are selected
instead of Return Temperature and Return Humidity, then
Space Hum and Space Temp will be displayed If there
are two supply temperature sensors installed, then Supply
Temp Avg will be displayed on this page and both Supply
Temperature 1 and Supply Temperature 2 will be displayed
on another screen
U01
Blower Status
Supply Blower>ON
Start Delay >000sec
Minimum Run >000sec
Stop Delay >030sec
Mode Start >060sec
Damper Delay >000sec
This screen displays information about the blower status
and all of the time delays for the blower, Fresh Air Damper
and Mode Start Delay The Damper Delay is the time it takes
for a Fresh Air Damper to open and will only be displayed if
the damper actuator does not have an End Switch for proof
that the damper is open The Mode Start must time out
before any modes of operation will occur The start delay
and damper delay take precedence so once the system
is on, the start delay must time out and then the damper
output is energized Once the output for the damper is on
for the length of the damper delay, then the blower output is
energized Once the blower is on for the length of the mode
start delay, then the mode of operation (cooling, heating,
humidification, or dehumidification) will start if required.
U01
Air Economizer
Econ Demand > 037.9%
Outdoor Temp> 45.7 °F
Outdoor Hum > 48.2%
Enthalpies:
Outdoor>22.3btu/ lb
Indoor >29.3btu/lb
Depending on the type of Air Economizer setup, the
information displayed on this screen may appear like this
or with less information The output voltage to the actuators
will be the air economizer demand divided by 10 so from
the displayed value, the Analog Output voltage to the
damper actuators will be 379 vdc A damper minimum and
maximum output can also be added under Economizer
Setup within the Technician Menu which will be discussed
later in this manual When set up as Enthalpy Type, the
Outdoor Air Enthalpy must be less than the Indoor Air
Enthalpy and the Outdoor Air Temperature must be less
than the Outdoor Temperature Set Point for Air Economizer
for the system to go into air economizer mode of operation
The Econ Demand will match the Cooling Demand If a
Minimum Damper position set point is added, the dampers
will always maintain that position when the system is on and
in occupied or set back mode and they will be closed when
the system is off or unoccupied
U01
Cooling Status
Demand> 067.2%
Compressor 1 >ON