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7
In this step, the water pressure se nsor, flue gas
sensor, boiler outflow and return sensors,
ignition transformer, fan PWM, gas valve
electrical plug, ionization electrode connections
must be unplugged from the components
themselves (not from the mainboard
14). The free cables are ad viced to be attached
together with a strap for assuring uncontrolled
swinging.
9
Unscrew the bolt+nut connection pairs holding
the bottom flanges on the boiler outflow and
boiler return lines.
11
bottom plate and the back plate (namely th e
boiler chassis).
Rev: RINNAI Service manual (English)
Date:14/05/2019
Unscrew the 4 Allen head bolts connecting the
elbow gas flange of the gas valve from the valve
body (keep the o- ring). The gas line coming from
LMS
the bottom side of the boiler t owards the elbow
flange is a flex pipe thus, it can easily be bended.
should also be detac hed from the bottom panel.
For this purpose, unscrew the corrugated pipe
tightening plastic cap on the syphon. Now the
corrugated pipe is free from the syphon.
Unscrew the support connections to the chassis as
well.
108
8
10
12
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