Rinnai REU-KM3237FFUD-E Installation And User Manual page 38

10.Set the Rinnai Infinity to 'Forced Low' combustion by
setting No. 7 dipswitch of SW1 to 'ON'. (Fig. 3)
11.Check the burner test point operating pressure.
Infinity Condensing
LOW
32e / HDC1500e
G20 1.81 mbar
NG
G25 2.35 mbar
G30 2.65 mbar
LPG
G31 2.65 mbar
12. Remove rubber access plug and adjust the regulator
screw on the modulating valve (Fig. 4) as required to the
pressure above. Replace rubber access plug and seal it
shut.
13. Set the Rinnai Infinity to 'Forced High' combustion by
setting no. 7 and no. 8 dipswitches to 'ON'. (Fig.5) Ensure
maximum water flow.
14. Check the burner test point pressure.
HIGH
Infinity Condensing
32e / HDC1500e
N.G G20 5.64 mbar
G25 7.40 mbar
LPG G30 7.99 mbar
G31 7.99 mbar
15. Adjust the High Pressure Potentiometer on the Printed
Circuit Board above SW1 (Fig. 6) to the pressure shown
above. The potentiometer is very sensitive, turn no more
than a few degrees at a time; then let the pressure settle
down before turning it more. Seal screw shut.
16. IMPORTANT: Set dip switch no. 7 and no. 8 of SW1 to
'OFF' to return the appliance to 'Normal' combustion.
17. Close hot water tap and turn OFF the gas supply and
230V power supply.
19. Remove pressure gauge, and replace sealing screw.
20. Turn 'ON' the gas supply and 230V power
supply.
21. Operate unit and check for gas leaks at test
point.
22. Replace the front cover of the appliance.
GAS PRESSURE SETTING
Infinity Condensing
32i / HDC1500i
G20
G25
G30
G31
Infinity Condensing
32i / HDC1500i
G20
G25
G30
G31
2.26 mbar
2.81 mbar
3.19 mbar
3.19 mbar
6.28 mbar
8.00 mbar
9.02 mbar
9.02 mbar
38
Fig. 3
Fig. 4
Fig. 6