GAS PRESSURE SETTING
The working gas pressure on the water heater is electronically controlled and factory set. Under normal circumstances it does not require adjustment during installation. Perform this procedure only if the unit is not operating correctly and all other possible causes for incorrect operation have been eliminated. Contact Rinnai UK before
attempting to alter the gas pressure. Failure to do so could void the warranty.
1. | Turn 'OFF' the gas supply. |
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2. | Turn 'OFF' 230V power supply. |
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3. | Remove the front cover from the appliance. |
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4. | Check gas type switch no.1 of SW1 (fig. 1) is |
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| in the correct position for the type of gas (Nat. |
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| or LPG) you are using. (SW1 is top set of |
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| switches.) |
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5. | Attach pressure gauge to burner test point. (fig. 2) | (fig 1) | |||||||
off on SW1 |
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6.Turn 'ON' the gas supply.
7.Turn 'ON' 230V power supply.
8.If remote controllers are fitted, turn the unit 'ON' at the master controller, select the maximum delivery temperature and open a hot water tap fully. (CAUTION: Ensure building occupants do not have access to hot water outlets during this procedure.)
9.Set the appliance to 'Forced Low' combustion by setting No. 2 dipswitch of the bottom set of dip switches (SW2) to 'ON'. (fig 3)
10.Check the burner test point operating pressure.
27
Forced Low
off on SW2
1
2 3
(fig 3)
LEGEND:
Black Section indicates position of dip switch.
OFF ON OFF ON
OFF ON
