Astralpool HX70 Operations Instructions download pdf (Page 14)

Inst174 HX Series Pool & Spa Heater V02.15

GAS CONVERSION

BURNER CONVERSION HX 70

1. Turn off gas supply to unit.

2. Turn off power supply to pump and heater.

3. Remove front access door.

4. Disconnect gas supply tube from burner manifold.

5. Remove burner support bracket at the front left of the heater.

6. Remove the two Phillips head screws securing the angle brackets at the end of the manifold tube to

combustion chamber support angles.

7. Disengage the angle bracket at the front of the manifold from the slot in the combustion chamber support

angle, lower the front of the burner assembly and withdraw.

8. Remove the four Phillips head screws securing the injector manifold to the burner tray.

9. Remove burner injectors and replace with desired gas type injectors.

10. Remove regulator screw cap from top of gas valve.

11. Turn plastic plug anti-clockwise until fully removed and withdraw spring.

12. Insert spring for desired gas type and re-install plastic plug.

13. Re-install burner assembly and reconnect gas supply.

14. Check gas system for leaks.

15. Commence lighting procedure as described above.

16. Adjust burner pressure as described above.

HX 70

GAS TYPE

INJECTOR SIZE

BURNER PRESSURE

NATURAL

1.25 mm

1.00 kPa

PROPANE

0.79 mm

2.62 kPa

BURNER CONVERSION HX 120

1. Turn off gas supply to unit.

2. Turn off power supply to pump and heater.

3. Remove front access door.

4. Disconnect gas supply tube from burner manifold.

5. Remove burner support bracket at the front left of the heater.

6. Remove the two Phillips head screws securing the angle brackets at the end of the manifold

tube to combustion chamber support angles.

7. Disengage the angle bracket at the front of the manifold from the slot in the combustion

chamber support angle, lower the front of the burner assembly and withdraw.

8. Remove the four Phillips head screws securing the injector manifold to the burner tray.

9. Remove burner injectors and replace with desired gas type injectors.

10. Remove gas valve and replace.

11. For Natural gas models use White Rogers valve model 36G22 type 210 and for Propane use model

36G24 type 205

12. Re-install burner assembly and reconnect gas supply.

13. Check gas system for leaks.

14. Commence lighting procedure as described above.

15. Adjust burner pressure as described above.

HX 120

GAS TYPE

INJECTOR SIZE

BURNER PRESSURE

NATURAL

1.25 mm

0.92 kPa

PROPANE

0.79 mm

2.62 kPa

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Astralpool HX70 Operations Instructions Page 14

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