Raypak 302-902 Ignition Control Module, Ignitionmodule, High Limit Manual Reset, Flow Switch

IGNITION CONTROL MODULE

The interrupted proved ignition device conserves energy. When additional heat is needed, the combustion air blower starts to purge all air from the combustion chamber for about 15 seconds. On proof of air flow, the air proving switch closes and the igniter is energized, eliminating the fuel costs of maintaining a constant pilot. To assure safe operation, the gas valve cannot open until the pilot igniter is verified. The 100% igniter safety is an electronic device which closes the main gas valve within 8/10 of a second whenever the flame is interrupted. Main burner is automatically lit when the device is powered and pre-purged. Unit performs its own safety check and opens the main valve only after the igniter is proven to be capable of ignition.

Fig #9322

IGNITIONMODULE

HIGH LIMIT (MANUAL RESET)

The boiler is equipped with a manual reset high limit temperature device. Push the reset button and adjust the setting to 30° F or 40° F above desired operating temperature.

Drw. #8644

Fig. J-3

MANUALRESETHIGHLIMIT

FLOW SWITCH

Dual-purpose control shuts off boiler in case of pump failure or low water flow. Mounted and wired in series with the main gas valve. Check with Manufacturer for proper paddle size. Utilize correct paddle size for proper operation.

Flow switch will not operate if flow is less than 20 GPM.

Drw. #8241

Fig. J-4

FLOWSWITCH

OPERATING CONTROL

The heater may be equipped with different types of operating controls. Consult data sheet supplied with installation instructions. See Section L for adjustment safety precautions on domestic hot water applications.

Drw. #8643

THERMOSTATCONTROL

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