Fluid Circulation Pump
©Aqua-Hot®
250-D03 Diesel Series Service Manual
REV 220302
p. 89
Burner Maintenance
Step 15: Reinstall the Aqua-Hot’s Access Cover
1. Reinstall the Aqua-Hot’s access cover.
Step 16: Test for Normal Operation
1. Turn the diesel burner ON and allow the diesel burner to run for a complete cycle, until it shuts off on its own.
2. After the diesel burner has shut off, turn on the interior heat or run hot water until the diesel burner cycles back on. When
the diesel burner cycles back on, check the exhaust for any signs of smoke.
2. Securely tighten the three bolts securing the access cover in place.
Figure 158
Figure 157
NOTE:
The access cover must be installed prior to operation
as a safety switch (interlock) exists. It will prevent the Aqua-
Hot from operating whenever the access cover is not properly
installed.
