Rheem Raypak Hi Delta P902C Installation & Operating Instructions Manual page 43

High Limit—Manual Reset
This heater is equipped with a fixed-setting manual re-
set high limit temperature device as standard. It may
also have an additional optional adjustable manual-
reset high-temperature device.
FIXED
LIMIT
SENSOR
Fig. 44: High Limit (Manual Reset)
Standard
The fixed setting manual-reset high limit is built into
the PIM, it utilizes a dual-element sensor located on
the outlet (see Fig. 44). To reset a high limit lock-out,
press and release the RESET button located on the
user interface.
High Limit—Auto-Reset (Optional)
This heater may be equipped with an optional adjust-
able auto-reset high limit temperature device.
Adjust the setting to approx. 20°F (11°C) above
desired outlet temperature.
Fig. 45: Adjustable High Limit (Auto Reset)
RESET
ADJUSTABLE
Flow Switch
The flow switch is provided as standard and is factory
mounted and wired. The switch shuts off heater in
case of pump failure or low water flow.
Fig. 46: Flow Switch
Low Water Cut-Off (Optional)
The low water cut-off (Sales option F-10) automatically
shuts down the burner whenever water level drops
below the level of the sensing probe. A 5-second time
delay prevents premature lockout due to temporary
conditions such as power fluctuations or air pockets.
Fig. 47: Low Water Cut-Off
43