Installation, Operation and Maintenance Manual
Marvel Mini
28
Subject to change without notice.
120.9-IM (1218)
cursor will now be at the Override ON/OFF point Press the
UP/DOWN buttons to set Override to ON and then press
the Enter button Unoccupied Override will start and follow
the Override Timeout Time To reset the Override Time,
simply move the cursor back to the Override ON/OFF point
and set the field to the Reset position and press enter which
will send the unit back into Unoccupied mode
Unoccupied Override by Digital Input
(Requires available digital input and a voltage free dry
contact closure momentary push button)
A digital input can be set up to receive a momentary
pushbutton contact closure to initiate the start period of
the Unoccupied Override function The Unoccupied Time
period will follow the time that is set into the wall display just
as it would by initiating it at the wall controller
Unoccupied Override by BMS (Requires the
BMS Communications option)
A BMS Point is available and requires the BMS Option to
initiate the Unoccupied Override function The time period
for Unoccupied Override mode is also adjustable through
BMS Simply set the unoccupied override time period in
minutes Then Enable/Disable the Unoccupied Override
point to start the Unoccupied Override process If terminating
Unoccupied Override before time expiration is desired then
a reset point is also available
Morning Warm-Up
Morning Warm-Up is a function typically found in Variable
Air Volume applications There are numerous methods of
enabling the Morning Warm-Up function The three basic
methods available through the controller are:
1
By Time
2
By BMS Communications (Building Management
System)
Morning Warm-Up by Time
When selected to Morning Warm-Up by Time, the Warm-Up
Schedule is located and setup under the Schedule menu
The Morning Warm-Up Set Points are adjusted through
the Set Points menu Warm-Up should be scheduled to
operate during the Unoccupied Mode just before the start of
the occupied day Morning Warm-Up shall start the heating
cycle and heat until either the Return Air Temperature rises
above the Morning Warm-Up Set point or the Morning
Warm-Up Time period expires Once this occurs, the start
of the occupied day becomes active
Morning Warm-up by BMS (Requires BMS
Communications option)
Should the controller have the BMS option, Morning Warm-
Up by BMS can be enabled Morning Warm-Up by BMS
simply enables the Morning Warm-Up Mode when the BMS
point for Morning Warm-Up is enabled ON Once active,
the Morning Warm-Up Mode will start the heating process
based on the Morning Warm-Up Set points located under
the Set Points menu These set points are also adjustable
via BMS points
NOTE:
Control of Heaters
If the system has staged heaters, there will be a Morning
Warm-Up ON Temperature Set point and a Morning
Warm-Up OFF Temperature Set point If the system has
modulating type heaters, the amount of modulation is based
the Morning Warm-Up Return Air Temperature Set point and
Morning Warm-Up Return Air Temperature Band Set point
Morning Cool-Down
Morning Cool-Down is a function typically found in Variable
Air Volume applications There are numerous methods of
enabling the Morning Cool-Down function The three basic
methods available through the controller are:
1
By Time
2
By BMS Communications (Building Management
System)
Morning Cool-Down by Time
When selected to Morning Cool-Down by Time, the Cool-
Down Schedule is located and setup under the Schedule
menu The Morning Cool-Down Set Points are adjusted
through the Set Points menu Cool-Down should be
scheduled to operate during the Unoccupied Mode just
before the start of the occupied day Morning Cool-Down
shall start the cooling cycle and cool until either the Return
Air Temperature falls below the Morning Cool-Down Set
point or the Morning Cool-Downtime period expires Once
this occurs, the start of the occupied day becomes active
