Rheem 64DV Troubleshooting Manual page 125

For mid & high efficiency platforms. tankless gas
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P a g e S V C 8 2 0 ( P ) P o c k e t M a n u a l
Section 12: Control Board
Adjusting Manifold Pressure on NEW
NOTE: This adjustment to be performed on NEW control board.
Adjustment of "MINIMUM" Manifold Pressure Setting
1.
The setting value will display on the remote control
2.
Push and hold down the ADJ button.
3.
While holding the ADJ button, push (tap) the MIN
button. IF recorded value DOES NOT agree with
current value, proceed to next step. IF value
DOES agree, release the ADJ button and proceed
to "ADJUSTMENT OF "MAXIMUM" MANIFOLD
PRESSURE SETTING ON NEW CONTROL
BOARD" step.
4.
IF adjustment is needed, push and hold the ADJ
button.
5.
While holding the ADJ button, push the MIN
button.
The current number [01 – 39] will display on
6.
Remote.
7.
Continue to push the MIN button until you get the
same value recorded during the "VERIFY
'MINIMUM' MANIFOLD PRESSURE SETTING"
step.
8.
WARNING: Every time you push the MIN button,
the display will cycle up to the number 39. Once
at 39, it will automatically reverse and cycle back
down to 01.
9.
Release the ADJ button.
10. Continue to "ADJUSTMENT OF 'MAXIMUM'
MANIFOLD PRESSURE SETTING"step.
MIN
124
Replacement Procedure
Control Board
on NEW Control Board
MAX
ADJ

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