Superior AA250 Series, Инструкция по установке, эксплуатации и обслуживанию

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Series AA250 Page 17 LT252 Oct 2019
Remove these four (4)
screws
FUEL CONVERSION PROCEDURE
The AA250 heater is equipped to run on either natural gas or propane. From the factory it is set up to run on natural
gas, and must be converted to run on propane. The optional Propane Conversion Kit (P/N BK010) has all the
required parts:
•
Orifice #16, Part # UG040
•
Conversion Label, Part # BL022
• Label, LPG Orifice #16, Part # BL023
• Valve Conv. Kit NG-LPG, Part # CG072
1. Follow the SHUTDOWN PROCEDURE on page 13
2. Wait until the heater has cooled down before attempting to work on it
3. Remove any piping from the gas valve inlet.
4. Open the back door to access the burner assembly by turning the door latch a quarter turn with a slot
screwdriver
5. Unscrew the two machine screws securing the burner manifold to the base, and the two screws of the valve
bracket
Figure 13
6. Slide the burner manifold and valve out to expose the orifice.
7. Use a 1/2” wrench or socket to remove the orifice from the burner manifold. Inspect the orifice and burner
manifold for wear or damage.
8. Clean the threads in the burner manifold with a wire brush or cloth.
9. Install Orifice #16, Part # UG040 in the burner manifold, tighten until hand-tight and an extra quarter-turn
10. Follow the F92-1008 instruction sheet supplied with the Valve Conv. Kit Part # CG072 to modify the gas valve
for propane
11. Keep the NG orifice and gas valve springs in the kit bag in the event that you need to convert the heater back
to natural gas
12. Re-install the valve and burner manifold to the base, check that it is rigid and secure
13. Place the conversion label next to the rating plate, and fill in the blank spaces with a fine point permanent
marker or black pen. Place the LPG orifice label on top of the rating plate covering the natural gas information.
14. Close the back door and install the gas piping
15. Attach the supply line for the propane gas to the pipe fitting
16. Follow the START-UP INSTRUCTIONS on page 13