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Part number 550-100-325/0419
12
AquaBalance
®
Series 2 Wall Mount Gas-fired Water Boiler – Boiler Manual
3. Loosen the bottom swivel nut of gas pipe and unscrew the
top swivel nut “A” Figure 12, Item 3 from the gas valve venturi
Figure 12, Item 6.
Figure 12
Figure 13
4 Converting boiler to propane continued
for Figures 12, 13, 14, 15 and 16
1 Control panel (page 13)
2 Gas valve
3 Gas pipe
4 Washer
5 Hex head screws
6 Gas valve venturi
7 “O” Ring
8 Blower
4. Remove three (3) Hex head screws holding the venturi,
Item 5 in place, remove venturi, replace with new propane
venturi from kit. Verify the venturi label information
matches the boiler size AB-80/120/155. (Propane venturi
has black label), ensure Item 7, venturi “O” ring is in place
(see Figure 14), re-insert three (3) Hex head screws to
hold new venturi, tighten to hold securely in place.
5. Reassemble gas pipe and new washer to the venturi fitting,
re-connect nut “A” and gas pipe “Item 3” to venturi and
check the seal of the connection.
Inspect the gas pipe fitting connections on
the gas valve and new venturi (Item 3, Fig-
ure 12, page 12) check the seal of the connec-
tions. Failure to comply will cause a gas leak,
resulting in severe personal injury or death.
Figure 14
Figure 15
A
3
6
2
7
4
3
5
8
A
6
3
4
5
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