Maintenance And Care; Care Procedures - Rheem Raypak X94 Professional SR-410 Manuel D'installation Et D'utilisation

21. Visually check through the sight glass that the heater
is on and heating. An orange glow indicates that the
heater is running. At high fire, the flame should be
visible. The flame should be blue in color with some
orange streaks when the air/fuel ratio is correct. See
the visual inspection instructions on page 36 for
additional information.
22. Remove the manometer and replace the bleedle
plug.
23. Reinstall top panel, install the two screws at the rear
and knurled screw above the control panel.
24. Feel the inlet and outlet pipes. Outlet pipe should be
10°F to 20°F (6°C to 11° C) warmer than the inlet. It
should not be hot.
38

8. MAINTENANCE AND CARE

Care Procedures

A WARNING: Check the heater for possible rodent
nests after long periods of non-use.
To be followed one month after start-up and then semi-
annually.
1. Inspect and operate all controls, gas valve and
pressure relief valve.
2. On indoor heaters, clean room intake openings to
ensure adequate flow of combustion and ventilation
air.
3. Keep area around heater clear and free from
combustible materials, gasoline and other flammable
and corrosive vapors and liquids.
4. Visually inspect the intake air filter for damage or
obstruction. If the filter is visually good, test the filter.
If the intake suction reading when operating at 7500
RPM is more negative than -0.5" WC (-0.1 kPa)
replace the filter.
CAUTION: Combustion air must not be contaminated
by corrosive chemical fumes which can damage the
heater. Such damage will not be covered under
warranty.
F10350
Figure 45. Air Intake Pressure Measurement Location
If Heater Will Not Fire:
If you have no electrical power, it may be that your "circuit
breaker" has tripped. Try re-setting it.
If you have electrical power but the heater will not fire
check the following or see Troubleshooting section on
page 41:
1. The time clock must be in the "ON" position.
2. Your pump strainer basket may be full. If so, remove
debris.
3. Your water filter may be dirty. If so, backwash or clean
filter. (To tell if your filter is dirty, look to see if the filter
pressure will be higher than usual).
4. The pump may have lost its prime and be running
dry. Check the pressure on the filter. If there is no
pressure; then you are not moving water (or your
gauge is broken). Try to get the pump to run at its
normal flow rate.
INTAKE SUCTION
PRESSURE FEEDBACK
TO REGULATOR