TM031 Integrity 18, 20, 24, 26L Service Instructions REV: B
D.O.I: February 2008
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
Gas Type Conversion Procedure
1. Isolate the power and gas supply to the water heater.
2. Remove the front panel. (Refer to Procedure 1).
3. Remove the Burner Change Over Assembly (Refer to Figure 1 and Procedure 2).
4. Remove the Combustion Chamber Front Panel Assembly. (Refer to Figure 2 and
Procedure 3).
5. Remove the Lower Burner Assembly, (Refer to Figure 3 and Procedure 4).
NG - Propane
6. Remove and discard Nozzle Plate and nozzle plate screws – Models ending with
C suffix only (Refer to figure 3 and Procedure 23).
7. Fit replacement Propane lower burner assembly.
Propane - NG
6. Install Nozzle plate and nozzle plate screws – models ending with C suffix only
(Refer to figure 3 and Procedure 23).
7. Fit replacement NG lower burner assembly.
8. Refit the Combustion Chamber Front Panel Assembly.
9. Refit the Burner Change Over Assembly.
10. Remove the Gas Type Connector, (Refer to Figure 4 and Procedure 17) and refit
replacement for required gas type and water heater capacity.
11. Restore the power and gas supply.
12. Using an insulated tool, adjust the minimum and maximum burner gas pressures
(Figure 5) to that required for the size, model and gas type (refer to specifications
table on page Error! Bookmark not defined.) following the Burner Gas Pressure
Adjustment procedure on page 52.
13. Fit the correct gas type label and alter the test point pressures on the rating label
to reflect the new gas type.
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