34
Factory Settings
Password to enter factory menu is 1111.
NOTE: Refer to “Menu Tree” on page
48 for default/range settings.
Heating Type
- Unit heating type
is
set from the factory.
Temperature Control
- The MUA board monitors temperature control setpoints and components.
•
Tempering Mode
- The options for controlling the output of the tempering mode in heat/cool (if
equipped). Available options are Intake/Discharge/Space/Analog Control/Direct Digital Control (DDC).
•
Activate Based On
- Select how the unit will activate based on temperature readings: Intake/Space/
Both/Either/Stat (field installed thermostat). These settings can be altered for occupied and
unoccupied preferences.
•
Activation Sensor
- Allows selection of intake or outdoor sensor for unit to activate.
•
Construction Mode
- Configurable option for units used in construction settings.
Heating Config
- Allows the user to set various heating configurations.
•
# of Heat Stages
- Default is set to 0 for units without gas heat. If the unit is equipped with gas heat,
select 1.
•
Gas Type
- Select gas type, natural gas or propane, for the unit.
•
Gas Valve Limits
- This setting adjusts the unit’s gas valve range. You may adjust the Min or Max
percentage range.
•
Heat Hyst
- Intake or Space tempering sensor must go this amount of degrees above the setpoint
before heating turns off.
•
Input Source
- This lets the board know what signal (volts or milliamps) to expect from the analog
control system.
Only valid for analog tempering mode.
•
2nd Disch Sensor
- On/Off selection. When an additional thermistor is added, the two thermistor
readings will be averaged together. Default Off.
•
Average High Temp
- On/Off. When the “2nd Disch Sensor” is On, this menu will be available. When
“Average High Temp” is Off, if either discharge sensor goes above high temp limit the unit will go into
high temp lockout. When “Average High Temp” is On, both thermistors readings will be used to
determine high temp lockout. Default Off.
•
Pre Purge Config
- When enabled, this option will purge any gas that may not have combusted in the
unit before the unit lighting off. You may set the amount of time the purge cycle will operate.
•
Cabinet Hyst
- The cabinet temp must reach this many degrees above the activation setpoint to turn
off.
•
Freezestat Timer
- If the discharge temperature is below the freezestat setpoint for half the duration of
the freezestat timer, the heat will shut off momentarily. If the freezestat trips for a second time, the heat
will shut down immediately. Reset the lockout manually on the HMI.
•
Construction Heater
- When this option is set to On, settings will override any other airflow proving
values and high-temperature setting.
•
Max Temp Rise Limit
- Compares max rise limit to calculated max temp rise. Software will always
utilize the lower of the two values.
•
Blwr Off Flame Fail
- When enabled On, the blower will shut down if a flame lockout occurs. The
blower may go back into operation after the fault is cleared.
Summary of Contents for MUA Controls
Page 82: ...82 Notes ...
Page 83: ...83 CLEANING MAINTENANCE RECORD Date Service Performed ...
