FULTON Endura EDR 750 Nstallation, Operation And Maintenance Manual page 85

MAINTENANCE
PROBLEM
CPU Error Displayed
Temperature(s) Not
Displaying Properly
Errors During Program
Update
No SD Card Error
Burner Harmonic or
Resonance
Moisture collecting inside
the combustion blower
Tender No. MET21-117
4-12
CAUSE CHECK
Electrical/Wiring Verify all modules clipped into the back of display are fastened completely and securely.
Replace CPU module and/or display.
Controller/Settings Reset retained tags and reload user defaults.
If an update was just performed, verify the correct software type for the boiler model and
hardware was installed.
Electrical/Wiring If all temperatures are not displaying properly, verify all expansion modules are
communicating and that Link and Power LEDs are illuminated green.
Verify wiring to and from appropriate I/O modules.
Verify temperature sensor operation.
Replace sensor wiring on I/O module with a known working sensor to determine
possibility of failed sensor or failed I/O module.
Refer to Section 4 Downloading A Program to The PLC of the PURE Controls Addendum
Controller/Settings
for details regarding program updates.
A 4GB or larger flash drive formatted to FAT32 only is required when performing a software
update.
If a "Version Mismatch: UniLogic/UniStream Firmware" screen is prompted while
performing the program update, continue performing the update as outlined in Section 4
of the PURE Controls Addendum.
If further issues are experienced, contact Fulton technical support
Controller/Settings Install/Replace SD card with a capacity of 4GB or larger.
Reference Installation and Operation Manual Pure Control™ Addendum for more
information on SD card.
Maintenance Inspect air filter, replace if dirty.
Verify combustion at all operating points.
Inspect burner, clean according to maintenance instructions if dirty.
Boiler / Maintenance 1. This is caused by moisture in the flue gas vent being pulled in the reverse flow direction
Items
during an off cycle.
2. If a common manifold flue gas vent is installed, measure the pressure of the common
manifold at each condition (idle, light off, low fire, high fire) using a slack-tube monometer.
The common flue should always be maintained at a slight negative draft pressure. A
positive pressure can push exhaust gases and moisture in the reverse direction.
3. Inspect the boiler room space for ventilation fans. If present, confirm the fans are intake
fans pushing air into the space. Exhaust type fans should never be used in a boiler room as
they can draw a negative pressure in the space.
4. Using a slack-tube monometer, verify the boiler room pressure is neutral relative to the
outdoors. If the room is measured to be in a negative, this must be resolved.
5. Where boilers are using room combustion air provided by openings communicating
directly with the outdoors, verify the wall openings meet or exceed the net free area
requirements detailed in Table 6. Be sure to take into account the blocking effects of grills
and louvers.
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
SECTION 4
EDR-PURE-IOM-210617
Addendum #5 Page 85 of 105
© Fulton Group N.A., Inc. 2020