Installation, Operation and Maintenance Manual
Marvel Mini
21
Subject to change without notice.
120.9-IM (1218)
mounting instructions provided with the device Install a
four conductor cable minimum 18 AWG 300 volt rated from
the smoke detector to the terminal blocks labeled TB-SD
provided inside the unit
Wiring
1
Terminate from the device terminal number 9 to the
factory provided terminal TB-SD – 9
2
Terminate from the device terminal number 10 to the
factory provided terminal TB-SD – 10
3
Terminate from the device terminal number 6 to the
factory provided terminal TB-SD – 6
4
Terminate from the device terminal number 16 to the
factory provided terminal TB-SD – 16
On units with both a supply and return smoke detectors,
these terminals shall have terminal designations of TB-SSD
for Supply Smoke Detector and TB-RSD for Return Smoke
Detector instead of TB-SD The terminal number pattern is
the same Terminal 9 inside the Smoke Detectors terminate
to terminal 9, 10 inside the smoke detector terminates to 10
inside the unit and so on The only difference is the location
of the smoke detectors (supply or return air streams) Please
remember to account for this during installation
Optional Fire Stat Terminations
For a Field Supplied Fire Stat, two terminations shall be
required Follow the installation/mounting instructions
provided with the device Install a two-conductor cable
minimum 18 AWG 300 volt rated from the smoke detector/
fire stat to the terminal blocks provided inside the unit.
Wiring
1
Locate the Normally Closed dry contact terminations,
which open on alarm, inside of the Firestat
2
Terminate from one of the terminals inside of the Fire
Stat to the factory provided terminal TB-FS – 1
3
Terminate from the other terminal inside of the Fire
Stat to the factory provided terminal TB-FS – 2
Optional Remote On/Off Control
With the optional Remote On/Off Control, the unit will start
when a voltage free dry contact closure is provided to
Terminals TB-RMTO – 1 and TB-RMTO – 2 This closure
should be provided by a dry contact closure switch installed
at a remote location Install two conductors minimum 18
AWG 300 volt rated from the Remote ON/OFF Switch
location to the unit’s terminal blocks TB-RMTO Connect
the wires as follows:
Wiring
1
Connect one wire at the Remote ON/OFF switch to
one termination pole of the switch
2
Connect the other wire of the Remote ON/OFF switch
to the other termination pole of the switch
3
At the unit, connect one of the wires to TB-RMTO – 1
4
Connect the other wire to TB-RMTO – 2
MARVEL MULTIAPP CONTROLLER –
SEQUENCE OF OPERATION
Outdoor Air Damper (option)
On units without the Airside Economizer option, the system
has an option for a Fresh Air Damper Output If the Fresh Air
Damper Output is enabled and the system is in the Occupied
Mode, the output will open the outdoor air damper once the
System ON/OFF is set to the ON position After the initial
startup delay of 5 seconds (default and field adjustable),
the output for the fresh air damper will supply a dry contact
closure to start the Fresh Air Damper This option allows the
damper to drive open based on two methods
1
Outdoor Air Damper Time Delay – Allows the Outdoor
Air Damper to drive open for the adjustable damper
time delay before starting the Supply Air Blower
2
Outdoor Air Damper End Switch – Allows the Outdoor
Air Damper to drive open but will not start the unit’s
Supply Air Blower(s) until the Outdoor Air Damper End
Switch provides contact closure back to the Marvel
Multi-Application controller verifying that the Outdoor
Damper is open
Outdoor Air Damper End Switch (option)
On units with the optional Outdoor Air Damper End Switch
enabled, the Marvel Multi-Application Controller will not
start the Supply Air Blower until there is contact closure
on the Outdoor Air Damper End Switch proving that the
Outdoor Air Damper is open If the controller does not
receive proof that the outdoor air damper is open within the
specified adjustable time delay, the Marvel Multi-Application
controller will provide and Alarm to alert personnel that the
Outdoor Air Damper failed to open