71
Alert 354: Abnormal Recycle Delta-T limit
This safety was breached as the inlet and outlet temperature difference exceeded 70°F. This is done to prevent damage to the heat
exchanger. Before this error appears, the combustion air blower would have slowed down in an effort to prevent such an error from
occurring.
Verify pump motor load
to pump rated load
Purge air from water lines
Check pump wiring
Check pump curves to
compare with flow and
pressure drops in Part 4
of Advantus
™
IOM
Upgrade pump
Low current reading
Out of spec
Current reading within spec
Summary of Contents for ADVANTUS AVH 1000
Page 2: ......
Page 3: ......
Page 38: ...31 Figure 23 Recommended Piping with Reverse Return and Variable Primary Flow...
Page 88: ...81 PART 12 EXPLODED VIEW Figure A...
Page 89: ...82 Figure B FAN BURNER ASSEMBLY AV500 600 some items may not be as shown...
Page 90: ...83 Figure C FAN BURNER ASSEMBLY AV800 4000 some items may not be as shown...
Page 91: ...84 Figure D Figure E...
Page 92: ...85 Figure F Figure G...
Page 93: ...86 Figure H CONTROL BOARD ASSEMBLY...
Page 100: ...93 PART 13 ELECTRICAL DIAGRAMS...
Page 101: ...94...
Page 102: ...95...
