Aqua-Hot 375-LP Installation Manual download pdf (Page 44)

375-LP Installation Manual

SECTION 10: PURGING THE SYSTEMS

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NOTE: The propane burner may not light on the first

attempt if air is still present in the line. It will at-

tempt to light automatically three times, and once

propane is present, it will light successfully. The

first light may be noisy, but the second light

should be purged and stable.

Purging the Propane System

1. Ensure that the propane line from the RV pro-

pane tank to the Aqua-Hot has propane avail-

able.

2. Attach the propane inlet line from the RV pro-

pane tank to the Aqua-Hot’s “Propane Inlet

Only!” port.

3. Open the manual shut-off valve (ball valve) at

the Aqua-Hot’s propane inlet port and allow

propane to fill the Aqua-Hot’s internal line fully.

At this point ensure that the connections to the

unit are not leaking propane gas.

4. Remove the propane line from the propane

burner’s gas valve to bleed any air in the line un-

til propane is present. Reference Figure 53.

Internal Propane

Connection to the

Propane Burner’s Gas

Valve

(to be disconnected during initial

Propane hookup and purging)

Figure 53

5. Reattach the propane line to the propane

burner’s gas valve and tighten completely to

avoid leaks.

6. Ensure that the interior room thermostats are set

to their highest position in order to call for heat,

then turn the burner switch on the interior

switch panel to “on.”

7. Once the burner is lit successfully, the system

is purged.

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Aqua-Hot 375-LP Installation Manual Page 44