Raypak P-2100, P-1826, P-926 Electrical Wiring, Low Water Cutoff, High & Low Gas Pressure Switches

Low Water Cutoff

Automatically shuts down burner whenever water level drops below probe. A 3 to 5 second time delay prevents premature lockout due to temporary condi- tions such as power failure or air pockets. Standard on Cal Code heaters.

Fig. 25: Low Water Cutoff

High & Low Gas Pressure Switches

Pressure switches sense either high or low gas pres- sure and automatically shut down burners if abnormal pressures exist. Standard on Models 3001-4001.

Fig. 26: High/Low Gas Pressure Switch

Electrical Wiring

DANGER - SHOCK HAZARD - Make sure electrical power to the heater is disconnected to avoid potential serious injury or damage to components.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

NOTE: If it is necessary to replace any of the original wiring, it must be replaced with 105° C wire or its equivalent.

Electronic Ignition

The intermittent ignition device conserves energy by automatically extinguishing the pilot when desired temperature is reached. When additional heat is need- ed, the pilot re-ignites electrically, eliminating the fuel costs of maintaining a constant pilot. To ensure safe operation, the gas valve cannot open until the pilot relights and is confirmed.

Model	Without Lockout		With Lockout
	N	P	N	P
926–1826	Standard	N/A	Optional	Standard
2100–4001	N/A	N/A	Standard	Standard
	Table E: Lockout Availability

Heater must be electrically grounded and bonded in accordance with local codes, or, in the absence of local codes, with the latest edition of the National Electrical Code, ANSI/NFPA 70.

Fig. 27: Ignition Module

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