Gas Pressure Setting Procedure - Rinnai REU-24 W-A Service Manual

GAS PRESSURE SETTING PROCEDURE

1. To adjust the LO and/or HI pressure,
locate the min/max rate switches behind
the paper seal on the P.C.B.
RATE SWITCHES
3. Adjusting the LO pressure.
Remove the test point screw and attach
l
the pressure gauge.
Open a tap and allow the water to flow
l
slowly.
Place the NO.6 and NO.8 switches in the
l
ON position as shown opposite.
Adjust the regulator screw if necessary.
l
Lock the regulator screw after having
l
achieved the correct pressure.
Return the NO.8 switch to the
l
OFF position. (If the HI pressure is not going to be checked, then switch NO.6 must
be returned to the OFF position).
4. Adjusting the HI pressure:
Open a tap fully to allow maximum
l
water flow.
With the NO.6 switch still in the ON
l
position, place the NO.7 switch in the
ON position also, as shown here.
6 7 8
Adjust the HI pressure by rotating the
l
High Setting POT, shown here.
HIGH Setting POT
HI setting on Natural Gas - 0.70 kPa
2. Confirm the position of the gas type
select switches, according to the
diagram below.
(The REU-24 W-A is only approved
to operate on Natural Gas)
Do not alter the gas type selection
switches unless they are incorrect.
LOW setting on Natural Gas - 0.04 kPa
6 7 8
Test point
screw
5. After having adjusted the POT to
achieve the correct pressure setting,
return the NO.6 and N".7 switches to
the OF'F position.
6 7 8
Remove the pressure gauge and replace
l
the test point screw.
Replace paper seal over switches.
l
Regulator
adjusting screw