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4.9.2 Instructions 3. Cut crimp connectors off white wires and strip <br /> the insulation off of the two ends. <br /> To connect the condensate drain pipe: 4. Select an appropriate length of wire (18 AWG <br /> 1. Apply thread sealant to 1/2 in. MNPT or greater) and strip the insulation off the ends. <br /> condensate drain port. Follow the wiring guidelines established by the <br /> National Electrical Code (NEC). <br /> 2. Thread 1/2 in. NPT fitting onto condensate <br /> drain port. To Condensate Pump <br /> 3. Follow the steps in the next section: Safety Switch <br /> "Condensate Pump Safety Switch Wiring." <br /> Strip insulation <br /> Cut off crimp off both ends <br /> connectors of wire <br /> 1/2 in. MNPT Figure 62 <br /> Condensate Drain 5. With wire nuts or other approved wire <br /> connectors, connect the "To Condensate <br /> Figure 61 Pump Safety Switch"wires to the normally <br /> open contacts on the condensate pump (see <br /> 4.9.3 Condensate Pump image below). <br /> Safety Switch Wiring 6. Reconnect power to the water heater and <br /> press the "On/Off' button on the controller. <br /> Test Operation <br /> IMPORTANT <br /> 1. Test the operation of the shut off switch by <br /> fthe <br /> steps in this section must conform with unplugging the condensate pump and filling <br /> codes and the guidelines established by the condensate reservoir with water until the <br /> ational Electrical Code (NEC). float switch closes the circuit. <br /> 2. Turn on the water heater. <br /> The condensate pump (if installed) should be 3. The water heater displays diagnostic code <br /> wired to deactivate the water heater in the event "25 " <br /> the condensate pump fails. <br /> 4. Plug in the condensate pump in and confirm <br /> 1. Disconnect power from the water heater. condensate is flowing out of the reservoir. <br /> 2. Open the water heater cover and locate two 5. Turn off the water heater by pressing the "On/ <br /> white wires labeled "To Condensate Pump Off' button on the controller. Wait five seconds <br /> Safety Switch." then turn the power back on. This will clear the <br /> diagnostic code. <br /> Rinnai Tankless Water Heater Installation and Operation Manual 59 <br />