Gas Conversion And Pressure Adjustment - Rinnai Multi-Point 11i Low NOx Installation And User Manual

Gas Conversion Procedure
IMPORTANT
The min and max gas operating pressures are factory pre-set: under normal circumstances any
adjustment is not required during installation.
The gas conversion procedure is made of three steps:
•
gas manifold change;
•
•
verify and adjustment of the min and max gas pressures.
1.
and SW4 set position).
2. Disconnect the igniter from manifold ("I" - Fig.1).
3. Replace the gas manifold with the new suitable component (the manifold
is fastened by the screws indicated with "Y" - Fig.1). Manifold's gas type
can be checked by the letter marked as in Fig.2.
4. Turn on the power and check the gas type on PCB entering in the
programming mode by pressing PB2 until the LED display of PCB shows
1: the current gas type will be displayed shortly afterwards.
5. Press PB4 to modify gas type accordingly to new gas type: A=Propane,
b=LPG, C=NG, d=air/propane.
6. Exit programming mode pressing PB2 until the LED digital display goes
blank.
7. Attach the digital manometer to the test point located on the gas valve
(Fig.3).
8.
kitchen controller: select the maximum delivery temperature and fully
open all hot water taps including the shower. Let the water run for a short
building occupants do not have access to the hot water outlets during
this procedure.
9. Set the water heater to forced low combustion by pressing PB5 until
the LED display shows "L". Check the gas pressure at manometer and
adjust it if required: to raise the gas pressure press PB3; to lower it press
PB4.
10. Set the water heater to forced high combustion by pressing PB5 until
the LED display shows "H". Check the gas pressure at manometer and
adjust it if required: to raise the gas pressure press PB3; to lower it press
PB4.
11. Set the water heater back to normal combustion by pressing PB5 until
the LED display goes blank.
12. Close the hot water taps. Remove the manometer and replace the test
point screw.
13. Operate and check for gas leaks at the test point. Set dip switches SW1 and SW3 on PCB to original position.
14. Fix the front cover of the appliance and update the data-plate to the new gas type
Gas pressures must be adjusted when front panel is removed and combustion mode is forced.
When measuring combustion or gas consumption, be sure, instead, that the water heater operates in normal
NOTE
mode, front panel is closed and
- (Max) remote contro
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Y
I
Fig.1
A = LPG
B = NG
Fig.2
Fig.3