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29
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.
2. Turn 'OFF' 230V power supply.
3. Remove the front cover from the appliance.
4. Check gas type switch no.1 of SW2 is in the
correct position for the type of gas (Nat. or
LPG) you are using. (SW2 is bottom set of
switches.)
* On is in the forward position, Off is in the back
position. Pull the switch toward you to put it
in the on position.
5. Attach pressure gauge to burner test point. (fig. 2)
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 a
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 Rinnai Infinity to 'Forced Low'
combustion by setting No. 7 dipswitch of the
top set of dip switches (SW1) to 'ON'. (fig 3)
10.Check the burner test point operating
pressure.
off on
SW2
off on
SW2
1 -Nat. Gas
1 -LPG
2
2
3
3
4
4
SW1
SW2
off on
SW1
1
2
3
4
5
6
7
8
fig. 3