55
Alert 354: Abnormal Recycle Delta-T limit
This safety was breached as the inlet and outlet temperature difference exceeded 40
o
F. This is done to prevent damage to the
heat exchanger. Before this error appears, the combustion air blower will slow down in an effort to prevent such an error from
occurring.
Verify pump
motor load to
pump rated
load
Low current reading
-
Purge air from water lines
-
Check pump wiring
-
Check pump wiring
Current reading
within spec
Check pump curves to
compare with flow and
pressure drops in Part 4
of Dynaforce® I&O
Out of spec
Upgrade Pump
Summary of Contents for DRH300
Page 2: ......
Page 6: ......
Page 38: ...32 13 Place toggle switch setting to REMOTE for remote operation if required...
Page 69: ...63 PART 12 EXPLODED VIEW 19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20...
Page 70: ...64 21 22 23 24 26 35 34 33 32 31 30 29 28 27 25 36 37 38 39 40 42 43 56...
Page 77: ...71 PART 13 ELECTRICAL DIAGRAMS...
Page 78: ...72...
Page 79: ...73...
Page 81: ...75...
Page 82: ...76...
Page 83: ...77...
Page 86: ......
