ETS Module
ETS Module
©Aqua-Hot®
125-DN1 Service Manual
REV 220421
©Aqua-Hot®
125-DN1 Service Manual
REV 220421
p. 39
p. 38
Fuel Line Connection
Burner Bottom View
Figure 76
Fuel Line Connection
Figure 77
Figure 78
Fuel Filter
Ø 5
0 - 90°
High Altitude Replacement
Fuel Purge Procedure:
The fuel lines should be automatically primed with the first
operation of the burner. It may need to be power cycled a few
times (3-4 times) to purge any air. Perform this procedure once
the burner and Aqua-Hot are completely installed and the Aqua-
Hot is adequately filled and purged.
1. Remove fuel line from burner before performing the
fuel purge procedure.
2. Connect a 6V power source to the fuel pump to pulse
the pump. The power source must be able to be pulsed
(turned on and off) rapidly, for this process.
• The pump can be powered with wire and gator
clips.
• The pump pin numbers can be found on the inside
of the housing where the pins are found.
NOTE:
DO
NOT
run the diesel burner without the coolant filled
and purged as it will cause serious damage to the burner.
Do NOT exceed 6V when powering the fuel pump. This can
cause irreparable damage to the fuel pump.
Fuel Pump Pins
Figure 79
1 2
• Ground goes to Pin #1
• Power goes to Pin #2
• If you would rather use a plug instead of the wire
and gator clips, the mating part numbers needed
for the connector are:
○ Housing: 1-967644-1
○ Terminal; 0965906-1
○ Seal: 0-967067-1
3. Pulse the fuel pump at a steady 1-2 pulses per second
until fuel begins to come out of the fuel line where it
will connect to the burner.
4. Connect the fuel line to the burner.
5.
Ensure all hose clamps and fuel fittings are tight and
properly secured.
6. Ensure that the exhaust is well ventilated.
7. Turn the burner to ON at the screen (see Figure 80).
The burner should cycle on because of the primed fuel
lines.
• There may be smoke from the exhaust on initial
start-up, this is normal.
8.
If the burner does not cycle on with the first start up, it
will try a second time.
• If the second start-up fails, there will be a fault
message on the LCD screen (Figure 81). Tap the
burner OFF at the screen.
• Repeat Step 8.
• If fault occurs again, repeat Steps 6-8.
9. After a successful start up, run the burner for 5
minutes.
10. After running the burner for 5 minutes, tap the HIGH
ALTITUDE option on the LCD screen (see Figure 82)
and run for additional 2 minutes.
After a complete, successful first operation, the fuel lines should
be purged of any air and ready for normal operation and use.
Figure 80
Figure 81
Figure 82
Fuel Purge Procedure
