36
Factory Settings
Password to enter factory menu is 1111.
NOTE: Refer to “Menu Tree” on page 41 through page 48 for default/range settings. Refer to
for Aux pin settings
.
•
Blower Config
•
Blower Control
- Allows user to select between 120V Contactor, VFD Manual, VFD Preset, VFD
Jog, VFD 0-10V, ECM, ECM 0-10V, ECM Preset, ECM Pressure, ECP.
•
120V Contactor
- 120V output on the MUA board to energize the coil of a contactor. This option
should be selected when the MUA is used in conjunction with a DCV package.
•
VFD Manual
- HMI selectable VFD frequency.
•
VFD Preset
- HMI selectable fan preset speeds. Fan speed is determined by Aux pins.
•
VFD Jog
- For use with VFDs using photohelic control. Aux pins are used to control the VFD.
Powering aux 1 will speed the fan up, powering aux 2 will slow the fan down. When aux 1 or aux
2 are not powered, the VFD will hold current speed.
•
VFD 0-10V
- For use when an external 0-10V signal is being provided to control the speed of the
VFD. The VFD output from this input will be based on the VFD min and max freq set under
protected params in factory settings. 0 Volts will equal VFD min, 10V will equal VFD max, and all
voltages in between will be scaled linearly. This option will utilize 0-10V J14-(6) and 0-10V
common J14-(7) screw terminals, and will require field wiring.
•
VFD Pressure
- For use with VFDs that use a pressure transducer (0-10V output).
•
Electronically Commutated Motor (ECM)
- HMI selectable PWM rate.
•
ECM 0-10V
- For use when an external 0-10V signal is being provided to modulate the ECM
supply output between min and max speed.
•
ECM Preset
- HMI selectable PWM fan preset speeds. Fan speed is determined by Aux pins.
•
ECM Pressure
- For use with ECMs that use a pressure transducer (0-10V output).
•
Blower Mode
:
- If “Occ” is set to On, the menu screen for the blower mode will allow you to choose ON/AUTO
OFF for Occupied or Unoccupied.
- If “Occ” is set to Off, the menu screen for the blower mode will allow you to choose MANUAL/
AUTO/INTERLOCK. In blower auto mode, the blower will only run when it gets a call for heating/
cooling.
- In blower manual/on mode, the blower will run as long as the fan button is enabled regardless of
whether the unit is heating/cooling. In blower off mode, closing contacts J16-5 (unit intlk) and
J16-6 (24V AC) will cause the blower to run.
•
Blower Presets
- User may set blower preset option On/Off.
•
Post Purge Config
- When enabled, this option will run the blower for the set time after heating has
shutdown.
•
Door Interlock
- When enabled, if the door is open, the supply fan will shut down immediately.
•
Fan Proving Config
- To set fan proving, the Exhaust Contactor must be set to Before Airflow or
After Airflow. When enabled, the user may set the number of contactors used. Contactor 1 = Aux 2.
Contactor 2 = Aux 3.
•
VFD Direction
- Sends a command to the VFD to run in forward or reverse.
•
VFD Freq Limits
- Min to Max range settings for fan speed.
•
VFD Volt Limits
- Min to Max range settings for third party VFDs.
•
PWM Rate Limits
- Range Min to Max settings for fan speed.
•
Occ Fan Presets
- After the blower has started, the blower setting will use the aux pins to drive the
preset occupied value.
•
Unocc Fan Presets
- After the blower has started, the blower setting will use the aux pins to drive
the preset unoccupied value.
Summary of Contents for MUA Controls
Page 82: ...82 Notes ...
Page 83: ...83 CLEANING MAINTENANCE RECORD Date Service Performed ...
