Rheem 871026 Betriebsanleitung PDF herunterladen (Seite 67)

COMMISSIONING

BURNER GAS PRESSURE

It is necessary to check the burner gas pressure at both the minimum and maximum operational settings. To

check and if necessary adjust the operational gas pressures, the electrical supply to the water heater must

be switched on, the burners ignited and hot water must be flowing from a hot tap.

Warning: The removal of the front panel will expose 240 volt wiring. Take care not to touch wiring

terminals.

Minimum test point gas pressure

Refer to the rating label on the water heater for the minimum test point gas pressure.

1. Close any hot taps and ensure the burners are not operating.

2. Turn off the controller(s), if one is fitted, by pressing the

on / off button and switch off the electrical supply at the

power outlet to the water heater.

3. Remove the screws holding the front panel to the jacket.

4. Gently disengage the front panel and pull forward to

remove from the water heater.

5. Locate the burner pressure test point on the main burner

manifold.

 Remove the test point screw and washer from the

test point orifice.

 Connect the manometer.

6. Switch on the electrical supply at the power outlet to the

water heater and turn on a controller, if one is fitted, by

pressing the on / off button.

7. Open the gas isolation valve fully at the gas inlet to the water heater, if not already open.

8. Open a hot tap slowly until the burners ignite.

9. Press and hold down the MIN button and observe the

reading on the manometer.

 “1L” is shown on the LED display.

10. Release the MIN button.

If the manometer reading observed in step 9 agrees with

the rating label, no further adjustment is required.

11. To adjust, press and hold down the adjuster button.

 “LH” is shown on the LED display.

Note: The adjuster button must be held down

continuously through steps 11 to 13.

12. Press the MIN button and observe the reading on the

manometer.

Note: While the MIN button is pressed, the gas pressure will at first increase then decrease, cycling

between an upper gas pressure limit (39 on the LED display) and a lower gas pressure limit (01 on the

LED display).

13. Release the MIN button when the reading on the manometer agrees with the rating label.

14. Release the adjuster button.

manometer

test point

screw

test point

orifice

min button

max button

adjuster button

L.E.D.

display

washer

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Verwandte Produkte und Handbücher für Warmwasserbereiter & Kessel Rheem 871026