874T26PF User Manual

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COMMISSIONING

Notes

 If the burners extinguish and an error code 11 or 12 starts to flash on the LED display:

 release the MIN and adjuster buttons

 close the hot tap

 clear the error code (refer to

“Clearing Error Code” on page 82)

 recommence the procedure from Step 9.

 If the adjuster button is released before Step 14, clear any error code (if displayed) and recommence the

procedure from Step 9.

Maximum test point gas pressure

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

Follow Steps 9 to 15 of the

“Minimum test point gas pressure” procedure on page 81, but open the hot tap fully

and use the MAX button instead of the MIN button. It may be necessary to open two or three hot taps fully,

depending upon the model of water heater and the incoming cold water temperature.

Notes

 In Step 10, “6H” will be shown on the LED display.

 In Step 13 While the MAX 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).

After setting the minimum and maximum test point gas pressures:

 Close the hot tap.

 Remove the manometer and refit and tighten the test point screw and washer.

 Open a hot tap again so the burners ignite.

 Test for gas leaks.

 Close the hot tap.

 Turn off the controller by pressing the on / off ( ) button.

 Switch off the electrical supply at the power outlet to the water heater

 Refit the front panel and screws to the water heater.

 Refit the cover strips to the top and bottom of the front panel by inserting the two posts into the two

recesses and gently pushing into position.

Clearing Error Code

If an error code does appear on the LED display during the commissioning process, it will be necessary to

clear the error in order to complete the installation.

To clear an error code:

 Turn off the controller, if one is fitted, by pressing the on / off ( ) button.

 Switch off the electrical supply at the power outlet to the water heater.

 Check the gas isolation valve at the gas inlet to the water heater is fully open.

 Wait five (5) minutes.

 Switch on the electrical supply at the power outlet to the water heater.

 Turn on the controller by pressing the on / off ( ) button.

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Rheem 874T26PF 26L LPG Continuous Flow Gas Water Heater