Service manual

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Drain Trap Replacement

Pin clip

Rear

Danger

Replace the Drain trap following the procedures below.

1. Disconnect electrical power to the unit.

2. Drain water from the Drain trap using the drain valve located underneath the water heater (Fig.).

3. Disconnect the relay connector(2 positions), remove the fixing screw, and remove drain hose 1

and drain hose 2. (Fig.). Remove the Drain trap by lifting up on it to disengage the tabs.

Note) When removing the drain hoses, make sure that water in the hose does not come into

contact with any part of your body. If it comes into contact with any part of your body,

rinse it off immediately with fresh water. Do not allow water from the drain hoses or

drain trap to leak into the water heater.

4. Connect the neutralizer drain hose (with pin clip) to the new Drain trap and install the one.

Reconnect drain hose 1 and drain hose 2 as well as the relay connector.(2 positions)

Note) Drain hose 1 and drain hose 2 must be oriented so that there is a downwards slope and

there are no bends or kinks in the hoses.

Do not connect the wires labeled as "Connector (Factory Use Only)" as shown in Fig. .

Connector(Factory Use Only)

Drain hose 1

Relay connector

Water Level Electrode

Fixing screw

Water Level Electrode

Tab

Front

Neutralizer packing

Drain hose 2

Neutralizer drain hose

Drain valve

(underneath water heater)

Fig.

Prior to initial start up, make sure that you fill the drain trap unit with water.

This is to prevent dangerous exhaust gases from entering the building.

Failure to fill the drain trap unit could result in severe personal injury or death.

Refer to the installation manual.