Replacement of Suburban water heater...
Replacing a Suburban water hater (SW12DE). Removing and replacing seemed pretty straight forward, however... Upon removing the old unit, there were four wires that had to be disconnected from the RV i...
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Your old switch will operate the LP side just fine. Just cap off that white wire. The switch you just posted is the dsi LP switch with NO 120 switch. ALL your original 120 side switch did was send a 12 volt pos signal to the orange wire to close the 120 12 volt operated relay. Just connect the BLACK 120 HOT wire to the BLACK on the new heater. Connect the large WHITE(neutral) wire to the WHIT Neutral on the new heater. Ground lug is obvious. You will be bypassing the relay assbly. Doug
