Rinnai REU-KBM3237FFUDHD-E, Service Manual

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10. Move switch No. 8 of SW1 to 'ON' position (Fig. 3).
11. Push the PCB board switch A for one second (Fig. 4).
12. Calibrate “forced low” combustion using switch A (up) and
B (down) as required.
13. Move switch No. 8 of SW1 to 'OFF' position and then back
to ‘ON’ position (Fig. 6).
14. Push the PC board switch B for one second (Fig. 4).
15. Calibrate “forced high” combustion using switch A (up) and
B (down) as required.
16. Move switch No. 8 of SW1 to 'OFF' position (Fig. 5).
17. Close hot water taps and turn ‘OFF’ the gas supply and
230V power supply.
18. Remove pressure gauge and replace sealing screw. Turn
‘ON’ the gas supply and power.
19. Operate unit and check gas leaks.
20. Replace the front cover of the appliance.
GAS PRESSURE SETTING
Fig. 4
LOW Gas
Internal External
Short flue
position
Long flue
position
-
NG G20 1,2 1,3 1,2
LPG
G30
G31
1,3 1,4 1,3
Air /
Prop.
G230 1,4 1,5 1,4
(pressures in mbar)
Fig. 3
Fig. 4
Fig. 5
Fig. 6
HIGH Gas
Internal External
Short flue
position
Long flue
position
-
NG G20 7,6 8,5 8,1
LPG
G30
G31
9,2 9,7 8,9
Air /
Prop.
G230 9,0 9,8 9,2
(pressures in mbar)