United CoolAir | MP Controller | Marvel J IOM - United CoolAir

Marvel J IOM - United CoolAir
UNITED COOLAIR CORPORATION
MARVEL “J” HVAC MICROPROCESSOR CONTROLLER
INSTALLATION AND OPERATING MANUAL
491 E. PRINCESS ST. YORK, PA 17405
PH: (877) 905 – 1111 FAX: (717) 854 – 4462
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FORM: MARJIOM
Rev. - 10/3/11
TABLE OF CONTENTS
GENERAL PURPOSE .......................................................................................................................................... 3
STANDARD COMPONENTS .................................................................................................................................. 3
BASIC OPTIONS ................................................................................................................................................ 3
MARVEL J CONTROL OPERATION ....................................................................................................................... 4
HARDWARE AND ARCHITECTURAL LAYOUT ......................................................................................................... 8
MARVEL “J” MAIN BOARD ................................................................................................................................ 9
SENSOR INSTALLATION ...................................................................................................................................... 10
MARVEL “J” TERMINAL (WALL CONTROL) .......................................................................................................... 12
DISPLAY DIMENSIONS ........................................................................................................................................ 13
WALL MOUNTING .............................................................................................................................................. 13
CONNECTING CABLE ......................................................................................................................................... 14
CONTROL BUTTONS .......................................................................................................................................... 15
ALARM BUTTON ................................................................................................................................................ 15
PRG BUTTON .................................................................................................................................................... 15
ESC BUTTON .................................................................................................................................................... 15
UP BUTTON ...................................................................................................................................................... 15
ENTER BUTTON ................................................................................................................................................. 15
DOWN BUTTON ................................................................................................................................................. 16
STARTUP .......................................................................................................................................................... 17
BASIC AND ADVANCED SETUPS ......................................................................................................................... 17
INPUT WIRING ................................................................................................................................................... 23
REAL TIME CLOCK BOARD ................................................................................................................................ 24
BUILDING MANAGEMENT SYSTEM OPTIONS ........................................................................................................ 25
MARVEL J MAIN BOARD CONNECTION POINTS ................................................................................................... 26
PROGRAMMABLE PARAMETERS ......................................................................................................................... 28
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FORM: MARJIOM
Rev. - 10/3/11
GENERAL PURPOSE
The Marvel “J” is an electronic programmable controller based on a double microprocessor design
that is used to control United CoolAir provided air conditioners and air handling systems. The
Marvel “J” (Figure 1 – Hardware / Architecture Layout) is made up of a microprocessor-based Main
Board controller that is factory mounted and wired internal to the air handling system and a
Terminal based wall mount control that must be field installed. The Marvel “J” system also
contains optional sensors that must be field installed and wired back to the factory provided field
interface terminal strips in the air handling system.
The Main Board is equipped with a set of plug in terminal block connectors used to connect the
Main Board to the control devices (i.e. solenoid valves, compressor contactor(s), blower
contactors, heater contactors). The program is stored on one (1) Megabyte of Flash Memory and
the unit’s settings and control parameters are permanently stored (even in case of power failure).
The Main Board can be linked to a Building Management System (BMS) via RS485 serial
connection and customer provided communication protocol systems. The type of BMS system the
Marvel “J” is connected to determines the type of optional communications board applied.
The microprocessor-based Terminal unit comes complete with LCD Display and Keypad for
viewing and setting of the control parameters (set points, bands, and alarm thresholds, time clock
settings for occupancy schedule and system run hours. etc.). The Terminal also allows viewing of
the operating conditions, present settings, staging of system components, and system demands.
Connection between the Marvel “J” “J’s” Terminal and Main Board is only required for viewing or
changing of the operating conditions and set points.
STANDARD COMPONENTS
Standard Components
The following is a brief description of operation for standard and basic optional components:

Time Clock with auto rechargeable battery backup.

7 Day Programmability for one Occupied Start point and one Unoccupied Stop point.

A Proof of Airflow Switch which will shut down all modes of operation in case there is a loss
of air flow.

Drain Pan Overflow Switch provided to shut down compressors in the event of a blocked
drain line or inoperable condensate pump.

Dirty Air/Clogged Air Filter Switch provided to notify customers of a dirty air filter in the unit
and a change of air filter(s) is required. This is only a notification (non-critical alarm) which
does not shut down the blower or compressor(s).

Programmable Alarm Thresholds for High and Low Temperature and Humidity Limits.

Cooling is activated to satisfy the dehumidification demand and reduce the humidity level
when it rises above the set point.
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
If the temperature falls below the temperature set point during dehumidification and the unit
has optional heaters, re-heat option required is then available to maintain the space
temperature as close to the set point as possible.

The compressor safety devices, sensors, and heaters are monitored by the Main Board for
failure. When a failure occurs, the applicable system(s) are disabled.

On a compressor failure of low or high pressure, the compressor is locked out from
operating and another compressor(s) if available is substituted.
Basic Options
The following is a listing of optional components with a brief description of operation:

Optional ON/OFF heating (electric, hot water coil, or steam coil) is sequenced on in stages
based upon the demand for heating. Each stage of heat has programmable delay between
stages so that two stages of heat do not turn on simultaneously.

On a heater 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.

An optional humidifier is activated when the humidity falls below the humidity set point to
satisfy the demand for humidification.

Air Side Economizer is an option that can be provided for a means of using outdoor air to
control the space being conditioned. It provides a more energy efficient method to cool the
environment. This feature requires an outdoor temperature and humidity sensor that must
be field installed.

A Free Cooling Temperature Sensor can be provided for free cooling by means of a freecool water coil. This sensor is factory mounted and wired into the Main Board.

Networking of multiple systems is available and may be configured for stand alone in the
network or Redundant operation.

Redundant system operation of two units or multiple pairs of units with backup assist in the
event of system failure is also available. Paired units may be set up to rotate at customer
selected day intervals.

Marvel “J” Main Boards may be networked to a Building Management System.
MARVEL “J” CONTROL OPERATION
Upon application of power from the main power supply, control voltage will be applied to the Marvel
“J” Controller. The Marvel “J” Control is shipped from the factory in the OFF state. Once power is
applied, a series of startup screens appear while the unit is initializing.
CAUTION: If power is disconnected from the unit while the Marvel “J” is in the ON state, the
unit will automatically restart when power is reapplied. This means in the event of a power
failure, the unit will automatically restart.
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Pressing the
(enter) button from the main screen will change the unit to “ON” or Run position.
The supply air blower for the evaporator will start after a 15 second default time delay.
Fan Operation
The supply (evaporator) air blower operates based on the customer configuration (Continuous
or On-Demand) which is set under the Factory Setup area. The default setting for the supply air
blower from factory is Continuous. Upon initial power up, press the
(enter) button for five
seconds and “Off by Keypad” will change to “ON” in the lower line of text. The supply air
blower will energize after a 15 second startup delay. If the On-Demand type of operation is
desired, refer to the Factory Setup section under the System Delays screens. When OnDemand type of control is set up, the supply air blower will energize on a call for cooling,
heating, humidification, or dehumidification.
Mechanical Cooling
System compressors are sequenced on in stages based on the demand for cooling. When the
air temperature increases above the Room / Return air temperature set point, the cooling
demand will start to increase. If the Room / Return air temperature increases above the Room /
Return air temperature set point plus ½ of the band set point, the cooling demand will increase
to 100% and Compressor 1 will energize. There is a programmable delay between each stage
of compressor set from the factory for 60 seconds. If the cooling demand remains at 100% for
more than each stage delay, remaining compressors (if available) are sequenced with a delay
between each stage.
As the Room / Return air temperature falls below the Room / Return air temperature set point
plus ½ of the band set point, the cooling demand will start to decrease. If available,
compressor 2 will shut down as the cooling demand falls below 50%. As the cooling demand
falls below 10%, Compressor 1 will shut down.
NOTE: When there is a demand for dehumidification, the dehumidification mode will
override the cooling mode. This means even though the air temperature might be at or
below the Room / Return air temperature set point, the compressors will operate to
satisfy the dehumidification requirement. If the air temperature falls below the Room /
Return air temperature set point during dehumidification, optional heating will be staged
on for the reheat function to temper the air temperature and bring it back up to the Room
/ Return Air Temperature Set Point. Dehumidification will continue to operate until the
requirement is satisfied.
Heating
System Heaters are sequenced on/off in stages based on the demand for heating. When the air
temperature decreases below the Room / Return Air Temperature Set Point, the heating
demand will start to increase. If the Room / Return Air Temperature decreases below the Room
/ Return Air Temperature Set Point minus ½ of the band set point, the heating demand will
increase to 100% and Heater 1 will energize. There is a slight delay between each stage of
heater. If the heating demand remains at 100%, remaining heat stages if available are
sequenced on with a slight delay between each stage.
As the Room / Return air temperature increases above the Room / Return air temperature set
point, the heating demand will start to decrease. Each stage will be shut down based on the
amount of Heat Demand.
Reheat
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If the Room/Return Air Humidity is above the Room/Return Humidity set point plus ½ the band
set point, the dehumidification demand will be 100% and the compressor(s) will energize for
dehumidification.
If the Room/Return Air Temperature falls below the Room/Return Air Temperature Set Point
minus ½ the band set point during dehumidification, the heating demand will become 100%.
The compressor(s) will continue operating and heating will stage on/off to satisfy the optional
reheat function.
Airside Economizer Option
Airside Economizer is an optional feature that requires a factory provided (field installed)
outdoor temperature and humidity sensor. If the Cooling Demand increases and the Outdoor
Air Dew Point Temperature is less than the Room/Return Air Dew Point Temperature Set Point,
and the Outdoor Air Temperature is below the Outdoor Air Temperature Set Point minus the
Outdoor Air Temperature Band Set Point, the unit will perform Airside Economizer mode of
operation. The amount of demand for Airside Economizer can be viewed by looking at the
System Demands screen ECON xx%. When operating in airside economizer, the outdoor air
dampers are modulated to the position that the ECON demand is calling for.
A minimum damper position setting is available within the advanced factory settings under the
Prg button in the Factory Settings. Refer to the Economizer screen under the Advanced
Factory Settings.
Airside Economizer will shut down when the Cooling Demand becomes 0% or if the Outdoor Air
Temperature rises above the Outdoor Air Temperature Set Point plus Outdoor Air Temperature
Band Set Point or when the Outdoor Air Enthalpy rises above the Room/Return Air Enthalpy.
The outdoor air enthalpy is calculated by the Outdoor Temperature and Humidity. The
Room/Return Air enthalpy is calculated by the Room/Return Air Temperature and Humidity. If
the Outdoor Air Enthalpy is lower than the Room/Return Air Enthalpy, then the Outdoor Air is
better than the Room/Return Air.
Free Cooling Option
Free Cooling is an option available for a more energy efficient method of cooling when
customers have cooling towers available and can provide an entering water temperature to the
unit at times of 55°F or less. The Free Cool option requires a factory provided and mounted
temperature sensor which is used to monitor the entering water temperature to the unit. If the
entering water temperature is below the Free Cool Temperature Set Point minus the Free Cool
Temperature Band Set Point, the Marvel “J” Main Board drives a water valve open to use the
optional free cool water coil instead of mechanical cooling compressors.
Free Cool Mode will stop when the Cooling Demand is 0% or the entering water temperature
increases above the Free Cool Temperature Set Point plus the Free Cool Temperature Band
Set Point. If the water temperature increases above the Free Cool Temperature Band Set Point
plus Free Cool Temperature Band Set Point and there is still a demand for cooling, the unit will
revert back to mechanical cooling with compressors.
Modulating Hot Gas Bypass for Low/Partial Load Compressor Management Option
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FORM: MARJIOM
Rev. - 10/3/11
Modulating Hot Gas Bypass for Low/Light Load Compressor Management is an option used to
false load the evaporator coil and compressor system during reduced loading conditions to the
evaporator coil. Since the cooling demand has not been completely satisfied the compressor
will continue to operate and the evaporator coil may start to freeze. The Marvel “J” Controller
regulates the amount of hot gas applied to the evaporator coil to prevent the evaporator coil
from freezing based on the cooling demand.
As the Cooling Demand increases, compressors are staged ON/OFF based on the Percentage
of Demand for each Compressor and the overall Cooling Demand. As the Cooling Demand
decreases to a point where the demand for cooling required is less than 50% demand and less
than 100% demand of the first stage compressor, Hot Gas shall be modulated through the
modulating Hot Gas Bypass Valve into the Evaporator Coil. If the cooling demand should then
start to rise again to a point where the demand is greater than the 100% of cooling demand for
the first stage compressor, the Modulating Hot Gas Bypass will modulate closed and if the
demand becomes high enough, Compressor(s) 2 will stage on.
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FORM: MARJIOM
Rev. - 10/3/11
HARDWARE AND ARCHITECTURAL LAYOUT
Terminal / Wall
Mount Control
Building
Management
System
Communications
Interface Wiring
Marvel “J”
Main Board
Figure 1 – Hardware/Architectural Layout
(Shown with Wall Mount Terminal and optional On-Board Display)
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FORM: MARJIOM
Rev. - 10/3/11
MARVEL “J” MAIN BOARD
Figure 2 – Marvel “J” Main Board is the layout of the main control board. The reference
designator J(xx) specifically lists the functions of each location on the board. These references
are as follows:
Figure 2 – Marvel “J” Main Board
J1 – Control Voltage connection terminals. 24 vac input required.
J2 – Analog Inputs used for sensor readings such as Space (Room or Return) Air Temperature,
Space (Room or Return) Air Humidity.
J3 – Analog Outputs used for analog control of Modulating Heat, Hot Gas Bypass Valves,
Airside Economizer Damper Actuators, Waterside Economizer Water Valves, Chilled Water
Valves.
J4 – Digital Inputs used for Compressor High and Low Pressure Safety devices, Fire/Smoke
Alarm indication and shut down, Dirty Air Filter, Condensate Drain Overflow, Heater High Limit,
and/or Remote ON/OFF.
J5 – Marvel “J” wall terminal interface connection.
J6 – Communications interface wiring.
J8 – Communications interface for additional I/O Expansion Boards.
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FORM: MARJIOM
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J9 – Digital Outputs used for Supply Air Blower ON/OFF, Compressor ON/OFF, and/or
Humidifier.
J10 – Digital ON/OFF Output for Heater 1.
J11 – Digital ON/OFF Output for Heater 2 or Humidifier.
SENSOR INSTALLATION
Room Air Sensor Installation
Room Sensor Mounting
Install the Wall Mount Room Air Sensor interior to the space that is being conditioned. The
sensor must be centrally located between all Return Air Grilles grilles. Do not install the
sensor directly under any of the supply air grilles. Typically installation height is about 54”60” above the floor. A template and mounting hardware are provided with the sensor.
Once the position of installation is located, use the template and appropriate size drill bits to
locate and drill the holes to install the sensor.
Room Sensor Wiring
Install a minimum 18-20 AWG 5-6 conductor shielded cable with drain wire and a minimum
300 volt insulation rating. Refer to Figure 3 – Space Air Sensor Wiring. Caution: Sensor
is polarity observant on the humidity side. Terminate each conductor as follows:
1)
2)
3)
4)
5)
Terminate
Terminate
Terminate
Terminate
Terminate
TB2-NTC to one of the NTC terminals inside the sensor.
TB2-NTC to the other NTC terminal inside the sensor.
TB2-G+ to G+ inside the sensor.
TB2-M to M inside the sensor.
TB2-Hout to Hout inside the sensor.
Note: Connect the drain wire to units Ground Lug at the unit’s electrical box only.
SPACE TEMP
& RH SENSOR
G+
ntc
ntc
M
Hout
NTC
NTC
G+
M
Hout
TB2
18-20 AWG
5-Conductor Cable
w/ Drain Wire
Drain Wire
Figure 3 – Space Air Sensor Wiring
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FORM: MARJIOM
Rev. - 10/3/11
Outdoor Air Sensor Installation
Outdoor Sensor Mounting
Refer to Figure 4 – Outdoor Temp and Humidity Sensor mounting for an illustration of how
to install the Duct Mount, Outdoor Air Temperature and Humidity sensor. Install the
outdoor air sensor as close to the center of the duct as possible. It may be installed
horizontally or vertically. It must be installed between the outdoor air louver and outdoor
air damper. A template and mounting hardware are provided with the sensor. Once the
position of installation is located, use the template and appropriate size drill bits to locate
and drill the holes to install the sensor.
OUTDOOR
AIR DAMPER
OUTDOOR
AIR LOUVER
MIXING BOX
OUTDOOR
AIR IN
OUTDOOR
TEMP & RH
SENSOR
NOTES: 1. Outdoor Temp & RH Sensor is Factory Provided & Field Installed.
2. Outdoor Air Damper & Louver are Field Provided & Field Installed.
Figure 4 – Outdoor Temp and Humidity Sensor Mounting
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FORM: MARJIOM
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Outdoor Sensor Wiring
Install a minimum 18-20 AWG 5 or 6 conductor shielded cable with drain wire and a minimum
300 volt insulation rating. Refer to Figure 5 – Outdoor Air Sensor Wiring. Caution: Sensor
polarity is important on the humidity side. Terminate each conductor as follows:
1)
2)
3)
4)
5)
Terminate
Terminate
Terminate
Terminate
Terminate
TB3-NTC to one of the ntc terminals inside the sensor.
TB3-NTC to the other ntc terminal inside the sensor.
TB3-G+ to G+ inside the sensor.
TB3-M to M inside the sensor.
TB3-Hout to Hout inside the sensor.
Note: Connect the drain wire to units Ground Lug at the unit’s electrical box only.
G+
NTC
NTC
M
Hout
TB3
OUTDOOR TEMP
& RH SENSOR
18-20 AWG
5-Conductor Cable
w/ Drain Wire
G+
ntc
ntc
M
Hout
Drain Wire
Figure 5 – Outdoor Air Sensor Wiring
MARVEL “J” TERMINAL (WALL CONTROL)
The Marvel “J” Terminal is complete with LCD Display and Keypad. The Terminal has LED
indicators integral to the buttons. A description of each indicator light is discussed with the function
of the each button starting on page 16. Use the table below for mounting distance and required
wire gauge. Use a shielded cable is required when routing next to high voltage power wires.
Distance
Wire Gauge
Up to 160 feet
Up to 650 feet
Up to 1500 feet
26 AWG
24 AWG
20-22 AWG
The Marvel “J” Terminal contains no sensors and does not need to be located in the building’s
space that is being conditioned. See Figure 6 – Terminal below for reference. The Terminal is
made up of the following components:
A. External buttons Prg, Esc,
indicators.
,
, and
or
(adjustment buttons) with integral LED
B. A 22 character by 8 row LCD Display with English text for ease and understandability of
adjustment.
C. On board help system to navigate through the setup and changing of operating system
parameters.
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FORM: MARJIOM
Rev. - 10/3/11
FIGURE – 6 Terminal (Wall Mount) Control
DISPLAY DIMENSIONS
Refer to Figure 7 – Terminal Dimensions for dimensional data. Dimensions shown are in inches.
Figure 7 – Terminal Dimensions
MARVEL “J” DISPLAY (TERMINAL) – WALL MOUNTING
Refer to Figure 8 – Wall Mounting for instructions to mount the Terminal to a wall.
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Figure 8 – Wall Mounting
Components of the Wall Controller:
A. Faceplate
B. Wall Controller
C. Mounting Plate
For best results in mounting of the wall controller, obtain an single position Receptacle/Switch
Electrical Box which typically measures approximately 3.75” high x 2.25” wide x 2.83” deep. Install
the box sideways (90 degrees) internal to the wall from the original upright position. The box may
be installed on metal or wood studded framing. Route the field provided connecting cable to the
box.
1. Remove the Faceplate “A” from the Wall Controller.
2. Using a small straight screw driver, remove the two screws which secure the Wall
Controller “B” to the Mounting Plate “C”.
3. Route the connector/cable through the back of the Mounting Plate “C” then screw the
mounting plate to the electrical box.
4. Plug the field provided Connecting Cable to the Wall Controller “B” then reinstall the Wall
Controller “B” back onto the Mounting Plate “C”.
5. Connect the field supplied standard phone cable into the coupler at the Main Board end.
CONNECTING CABLE
The Marvel “J” Terminal (Wall Control) connects to the Marvel “J” Main Board via a (field supplied)
6-conductor standard phone cord that must be coupled to a factory provided 4-foot phone cable.
Pull a field supplied 6-conductor standard telephone cord or 6-conductor shielded cable from the
Marvel “J” Main Board inside the unit’s electrical control box to the location the Marvel “J” Terminal
shall be installed. Refer to Figure 9 – Cable Information for additional details.
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FORM: MARJIOM
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Maximum distances:
6-conductor phone cable (26 AWG) up to 160 feet.
6-conductor shielded 24 AWG wire up to 650 feet
6-conductor shielded 22 AWG wire up to 1500 feet
FIELD PROVIDED
EXTENDING CABLE
INFORMATION
Side View
Top View
Field Cable must be a crossover cable with pins reversed.
Connectors have tabs installed in same direction.
Pin 1 connects to pin 6
Pin 2 connects to pin 5
Pin 3 connects to pin 4
Pin 4 connects to pin 3
Pin 5 connects to pin 2
Pin 6 connects to pin 1
FACTORY
PROVIDED
Side View
United CoolAir provided cable
Pin 1 connects to
Pin 2 connects to
Pin 3 connects to
is a straight through cable with ends reversed.
pin 1
Pin 4 connects to pin 4
pin 2
Pin 5 connects to pin 5
pin 3
Pin 6 connects to pin 6
Figure 9 – Cable Information
A 4-foot piece of 6 conductor standard phone cable is provided with each unit. One end connects
into an RJ12 Jack on the Marvel “J” Main Board. The other end of this phone cable connects into
an RJ12 Coupler which is then connected to a field supplied cable to the location of Terminal
installation.
CAUTION: This 4-foot cable is known as a Standard Cable. If the cable is placed flat on a table,
the conductors look like they conduct straight through because one RJ12 connector is installed
with the tab facing upward and the other RJ12 connector is installed with the tab facing downward.
The difference is that the RJ12 connectors are installed rotated 180 degrees from one another.
This makes this cable a standard/straight-through cable. One end is rotated 180 degrees from
the other end thus reversing the conductors on the opposite end.
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NOTE: DO NOT REPLACE THE 4-FOOT REVERSE PHONE CABLE as this cable has straight
through conductors from the normal standard phone cable which reverses conductors. The Marvel
“J” Terminal will not work if the connection is not correct and may damage the Marvel “J” Main
Board or blow the fuse due to improper connections.
CONTROL BUTTONS
The Wall Controller has built in help menus to assist with the navigation through controller
operation and unit setup. Follow the On Board Instructions to turn the unit ON and OFF and set
the desired operating set points.
See Figure 10 – Control Buttons for reference.
ALARM BUTTON
UP BUTTON
PROGRAM BUTTON
ENTER BUTTON
ESCAPE BUTTON
DOWN BUTTON
Figure 10 – Control Buttons
ALARM BUTTON
button is used for viewing the present alarms with the system. During an alarm
The
button is illuminated a continuous Red. Depending on the type of alarm, the
condition, the
system may shut down or continue to operate. Some types of alarms are just simple faults
known as indicators which are not harmful to the operation of the unit but may require
button will reveal what alarm caused the system
attention in the near future. Pressing the
button until the screen displays “NO MORE
to shut down. To reset an alarm, press the
button again to reset the alarm.
ALARMS; then to reset the alarm, simply press the
NOTE: A High or Low Pressure Alarm can only be cleared once the Compressor has
been re-enabled under the Enables sub-menu. If it is a high pressure alarm, make
sure to reset the high pressure switch before re-enabling the alarm.
PROGRAM BUTTON
The Prg button is used to navigate directly to the page for direct access to the advance menu
setup. Once on this page, customers have the option to enter the advance program or use the
arrow up to change basic setup and operation parameters.
ESCAPE BUTTON
The escape button is used to go back to the Main Page and/or to a previous page depending
on the page being displayed.
UP BUTTON
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The up
button is used to scroll upward through the pages/menus, increase a setting, or
toggle a component ON/OFF.
ENTER BUTTON
The
button is used to turn the unit ON/OFF, move the cursor to the location of desired change, confirm
temperature, humidity, and confirm selected components.
DOWN BUTTON
The down
button is used to scroll downward through the pages/menus, decrease a setting, or toggle a
component ON/OFF.
STARTUP
Upon application of power the controller will display the following screen in Figure 11. This screen
will automatically disappear once the controller has completely initialized.
MARVEL J CONTROLLER
by United
CoolAir Corporation
For more information
please visit us at:
www.unitedcoolair.com
Figure 11 – Initialization Screen
BASIC AND ADVANCED SETUPS
There are two specific methods that can be used to setup the system. These methods are BASIC
SETUP and ADVANCED SETUP. As shown in Figures 6 and 10 previously, each of the buttons
are used to access specific locations to Read or Change values (such as set points).
BASIC SETUP
The Basic Setup method allows customer to setup the control set points, (temperature, humidity,
etc.), adjust the time and date, set time schedules. As shown below, Figure 12 – Home Page is
the main home position page that appears continuously while the unit is on. In the event the user
walks away from the wall controller while another screen other than the Home Page is displayed,
the Home Page will reappear after five (5) minutes of inactive user interfacing.
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WED
8:41AM
SEPTEMBER 06, 2011
Actual:
Setpts:
ON
69°F
72°F
44%RH
50%RH
COOLING
Press  for Settings
Figure 12 – Home Page
The Home Page displays the day of the week, time and date, actual temperature and humidity (if
available) readings, as well as the temperature and humidity set points. The screen also gives a
brief description of the operating status (system ON or OFF, Cooling or Heating, Humidification,
Dehumidification, etc.).
To set up the unit for control of the space being conditioned, press the Down Arrow button to
enter the Settings area. The screen below displays the status of the unit being ON or OFF. Follow
the on screen command to turn the unit ON or OFF from this screen, simply press the Enter
button. Then press the Esc or button to go back to the Previous/Home Page or press the
button to go to the next screen in the Basic Setup loop.
Unit is ON
Press  to turn the
unit OFF
OFF
Esc for main display
 Next
 Previous
e next screen allows for basic adjustment of the Temperature set point. It also allows for basic
adjustment of the Humidity set point (if applicable). To change a set point, press the
button
to move the blinking cursor to the setting of the desired change. Press the or to adjust the
setting then press the
button to accept the change. Once complete, reposition the blinking
cursor in the upper right corner of the display then press the button to go to the next screen in
the basic setup or press the Esc button to go back to the Home Page
SET POINTS
Press  to change
 or  to turn the
Press  to accept
Temperature> 72°F
Humidity> 50% RH
 Next
 Previous
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The next screen allows for adjustment of the Day and Time. Time is in AM-PM format. Note
that this screen once the changes are accepted will not display the same as the Home Page.
Once the Day and Time are adjusted, upon return to this screen the next time, it will again
display THU at 00:00AM.
To change the day or time, press the
button to move the blinking cursor to the setting of the
desired change. Press the or to adjust the setting then press the
button to accept the
change. Once complete, reposition the blinking cursor in the upper right corner of the display then
press the button to go to the next screen in the basic setup or press the Esc button to go back to
the Home Page
SET DAY & TIME
Press  to change
 or  to turn the
Press  to accept
Day>THU TIME>00:00AM
 Next
 Previous
The next screen allows for adjustment of the Date. Note that this screen once the changes are
accepted will not display the same as the Home Page. Once the Date is adjusted, upon return
to this screen the next time, it will again display 01/01/04.
To change the day or time, press the
button to move the blinking cursor to the setting of the
desired change. Press the or to adjust the setting then press the
button to accept the
change. Once complete, reposition the blinking cursor in the upper right corner of the display then
press the button to go to the next screen in the basic setup or press the Esc button to go back to
the Home Page
SET DATE
Press  to change
 or  to turn the
Press  to accept
Date> 01/01/04
 Next
 Previous
The next screen allows for adjustment of the Occupancy Schedule. To change the schedule,
press the
button to enter the Occupied/Unoccupied Schedule setup. Press the or to adjust
the setting then press the
button to accept the change. Once complete, reposition the blinking
cursor in the upper right corner of the display then press the button to go to the next screen in
the basic setup or press the Esc button to go back to the Home Page.
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FORM: MARJIOM
Rev. - 10/3/11
Press  for the
Schedule Settings
 Next
 Previous
The next two screen explain how to make the adjustments within the Schedule Setup area.
Press the button to go to the next screen in the schedule setup area or press the Esc button to
go back to exit and go to the Home Page.
Schedule Setting
Instructions
Schedule Setting
Instructions
Press  or  to scroll
through the screens
Press  to change
 or  to turn the
Press  to accept
Press  for more
Press Esc to Exit
Press  to begin
To enable the schedule, press the
button to move the cursor to the No and press the
or
button to change the field to Yes then press the
button to accept the change. Then set the
daylight savings time to Yes or No depending on your location of operation. If your particular time
zone does not use daylight savings time at all, set the setting to No. Since most time zones go
have daylight savings time, this setting is defaulted to Yes.
Enable Schedule
> No
Daylight
Savings Time?
> Yes
Set the minimum time the Night Set Back the unit should remain on when performing
temperature or humidity control. If temperature control is desired set Temp Control to ON and
set the desired High Temp and Low Temp settings. As long as the temperature remains
between the High and Low Temperature settings while Unoccupied, the unit will not start to
control the air temperature.
If the actual air temperature is greater than the High
Temperature set point, the unit will start and Cooling will be activated to cool the air
temperature. If the actual air temperature is less than the Low Temperature set point, and the
unit has optional heating, the unit will start and Heating will be activated to heat the air
temperature.
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FORM: MARJIOM
Rev. - 10/3/11
U01 Unoccpied Control
Min Run Time> 10 min
Temp Control>OFF
High Temp >090.0°F
Low Temp >055.0°F
If optional humidity control is available and night set back control is desired for humidity, set
the Hum Control to ON and set the desired High Hum and Low Hum settings. As long as the
temperature remains between the High and Low Humidity settings while Unoccupied, the unit
will not start to control the humidity. If the actual air humidity is greater than the High
Humidity set point, the unit will start and Cooling will be activated to dehumidify the air. If the
actual air humidity is less than the Low Humidity set point, and the unit has a humidifier the
humidifier will be activated to humidify the air.
Unoccpied Control
Hum Control >OFF
High Hum >065.0%
Low Hum >035.0%
This screen allows for selection of which days customers would like to perform occupied and
unoccupied control.
Select Days
SUN >NO
MON >NO
TUE >NO
WED >NO
THU >NO
FRI >NO
SAT >NO
This screen allows for changing of the occupied start times.
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FORM: MARJIOM
Rev. - 10/3/11
Occupied Start Time
SUN >06:00
MON >06:00
TUE >06:00
WED >06:00
THU >06:00
FRI >06:00
SAT >06:00
This screen allows for changing of the occupied end times.
Occupied End Time
SUN >18:00
MON >18:00
TUE >18:00
WED >18:00
THU >18:00
FRI >18:00
SAT >18:00
Press the Esc button to exit the Schedule Setup.
End of
Schedule Setup
Press Esc to Exit
 Next
 Previous
The advanced menu screen allows for access to the Advance Menu area. Under the Advance
Menu area, the following Sub Menus are available for access. System Status, System Enables,
System Set Points (includes control bands), Clock and Schedule Setup, System Run Hours,
button to enter the Advanced Menu
BMS Setup, Technician Menu, Factory Menu. Press the
area or the Esc button to exit to the home page.
Press  for the
Advanced Menu
 Next
 Previous
22
FORM: MARJIOM
Rev. - 10/3/11
A full help menu can be accessed from this screen which describes on screen commands. The
bottom half of the Advance Menu system shows submenus which are available. Press the
or
buttons to navigate to the desired submenu. Press the enter button while the quad arrows are
pointing at the specific item which is capitalized to enter a specific submenu.
Advanced Menu
Press  or  to select
Then press  to enter
Press  for Help
********************
>> SYSTEM STATUS <<
system enables
set points
ADVANCED MENUS
The Advanced Menus shall be completed by December 2011. If additional details are required for
the Advanced Menus area, please press the alarm button for Help or Contact United CoolAir
Technical Support at (877) 905 – 1111.
INPUT WIRING
Digital Inputs
The digital inputs are syncing type. The IDC1 Terminal is common (24 VAC common / ground) of
the controller. This termination is connected to every switching/safety device. If the terminals ID1ID6 loose this ground connection, the controller will provide the appropriate alarm that is allocate to
that specific digital input. Refer to Figure 13 – Digital Input Termination References for further
details.
IDx
SD
IDC1
SD - Safety Device
IDx - Digital Input
IDC1 - Digital Input Common Connection
Figure 13 – Digital Input Termination References
Analog Inputs
A total of four Analog Inputs are provided for reading Space Air Temperature (Room or Return),
Outdoor Air Temperature or Water Temperature, as well as Space (Room or Return) and Outdoor
Air Humidity. Please refer to the electrical diagram(s) provided with each unit for field termination
of each device being installed. These termination points are also defined by each electrical
diagram provided with every unit.
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FORM: MARJIOM
Rev. - 10/3/11
Digital Outputs
There are 5 Digital Output Relays capable of handling up to 10 Amps Resistive at 1 Amp Inductive
loading at 250 VAC. To power a control device (contactor, starter, solenoid coil, etc.) connect the
neutral side of the 24 VAC power supply to the control device. Connect the hot side of the 24 VAC
power supply through the common C(x) of the digital output relay as shown in Figure 14 – Digital
Output Termination References.
24 VAC Com
NO5
CD
+24 VAC
C5
CD - Control Device (Contactor, Etc.)
C5 - Relay 5 Common
NO5 - Relay 5 Normally Open Contact
NC5 - Relay 5 Normally Closed Contact
NC5
Figure 14 – Digital Output Termination References
Analog Outputs
There are 2 Analog Outputs each are capable of providing modulating output voltage of 0 – 10
VDC to control one of the following optional devices: Modulating Hot Gas Bypass, Modulating
Heat, Room Pressure Dampers, Airside Economizer, or a Chilled Water Valve. The analogs
outputs must be powered externally using 24 VAC. The neutral side of the 24 VAC power supply
is connected to terminal VG0. The 24VAC hot side is connected to terminal VG1. Analog outputs
1 (Y1) and 2 (Y2) connect to the modulating input for the device being controlled. Refer to Figure
15 – Analog Output Termination References for connection details.
GND
Output 2
0-10 VDC
Output 1
0-10 VDC
Y2
Y1
Output 1 (0-10 VDC) Reference to Ground (GND)
Output 2 (0-10 VDC) Reference to Ground (GND)
Figure 15 – Analog Output Termination References
REAL TIME CLOCK BOARD
The optional real time clock board Figure 16 is plugged into the connection point toward the center
of the Main Board as shown in point 14, page 9. This board is required if the unit is to follow
occupancy schedules or night set back schedules. The clock board is powered by a Lithium
battery. All clock boards are installed at the factory but they are field replaceable if the clock fails.
CAUTION: NEVER plug-in or remove the real time clock board when the control board is powered.
24
FORM: MARJIOM
Rev. - 10/3/11
Figure 16 – Real Time Clock Board
BUILDING MANAGEMENT SYSTEMS (BMS SYSTEMS)
Several methods of supervisory systems may be used to communicate with the Marvel “J” Main
Board which allow for monitoring of the systems readings, changing/offsetting of set points and
remotely view alarm status. The following is a list of BMS Systems the Marvel “J” Control can
interface with:
BACnet
ModBus
pCOWeb
LonWorks
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FORM: MARJIOM
Rev. - 10/3/11
MARVEL “J” MAIN BOARD CONNECTION POINTS
Item #
Terminal
Description
Software Use
J1-1
G
Power supply 24 VAC Input
J1-2
G0
Power supply 24 VAC Common
J2-2
B1
Analog Input 1 (0-1 Vdc or 0-20 mA)
Room or Return Air Humidity
J2-3
B2
Analog Input 2 (0-1 Vdc or 0-20 mA)
Outdoor Air Humidity
J2-4
B3
Analog Input 3 (NTC)
Room or Return Air Temperature
J2-5
B4
Analog Input 4 (NTC)
Outdoor Air Temperature or Water Temperature
J2-6
GND
Reference Point
Analog Input Ground Reference
J2-7
+5VREF
Power Supply
0-5 Volt Radiometric Sensors
J2-8
+24vdc
Power Supply
0-20 and 4-20 milliamps sensors
J3-1
Y1
Analog Output 1 (0-10 Vdc)
J3-2
Y2
Analog Output 2 (0-10 Vdc)
J3-4
GND
Reference Point
Analog Output Ground Reference
J4-1
ID1
Digital Input 1
Airflow Loss or High Static Pressure
J4-2
ID2
Digital Input 2
Smoke detector alarm
J4-3
ID3
Digital Input 3
Dirty Filter
J4-4
ID4
Digital Input 4
Drain Pan Overflow / Freeze Stat
J4-5
ID5
Digital Input 5
Compressor 1 Low Pressure
Hot Gas, Economizer, Pressure, Humidifier, Chilled Water Modulating
Heat
Hot Gas, Economizer, Pressure, Humidifier, Chilled Water Modulating
Heat
26
FORM: MARJIOM
Rev. - 10/3/11
Item #
Terminal
J4-6
ID6
Digital Input 6
J4-7
IDC1
Common Input for Digital Inputs ID1-ID6 GND from Marvel J Board
J5
Terminal
6-wire RJ11 telephone connection for Terminal
J6-1
RX-/TX-
Communications
Receive Data
J6-2
RX+/TX+
Communications
Transmit Data
J6-3
GND
Communications
Ground Reference for Communications
TLAN
Terminal Connector
J7
Description
Software Use
Compressor 1 Low Pressure
J8-1
TLAN
TLAN Network Connection
Expansion Board Communications
J8-2
GND
TLAN Network Connection
Ground Reference for TLAN Expansion Board Communications
J9-1
C1
Common for Relay Outputs 1-3
J9-2
NO1
Relay 1 Normally Open Contact
Fan (Supply Air Blower)
J9-3
NO2
Relay 2 Normally Open Contact
Compressor 1
J9-4
NO3
Relay 3 Normally Open Contact
Compressor 2
J10-1
C4
Common for Relay Output 4
J10-2
NO4
Relay 4 Normally Open Contact
Heater 1
J11-1
NO5
Relay 5 Normally Open Contact
Heater 2
J11-1
C5
Common for Relay Output 5
J11-3
NC5
Relay 5 Normally Closed Contact
27
FORM: MARJIOM
Rev. - 10/3/11
PROGRAMMABLE PARAMETERS
Parameter/Description
Default
Lower/Upper
Limits
Unit of
Measure
Room / Return Temperature Setting
72
50/90
°F
Room / Return Temperature Band
5
0-99
°F
Room / Return Humidity Set point
50
35-65
% RH
Room / Return Humidity Band
10
0-99
%
Discharge Temperature Set Point
55
50-70
°F
Discharge Temperature Band
10
5-10
°F
Room / Return Hi / Low Temperature
Alarm
80/60
50-120
°F
Room Hi Low Humidity Alarm
65/35
0/100
% RH
Enable Night Setback
OFF
On/Off
Night Minimum ON
300
0-999
Seconds
Night Setback Hi / Low Temp
90/55
50-120
°F
Night Setback Hi / Low Humidity
65/35
0-100
% RH
Occupied / Unoccupied Times
6/18:00
0:00-23:59
Hours/Minutes
Supervisor Unit Identification
1
1-200
Supervisor Baud Rate
19200
1200-19200
28
Baud
FORM: MARJIOM
Rev. - 10/3/11
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