Wiring Diagram and Schematic

TNR-I&S-02

If wiring in conduit is required, remove the line cord and strain relief bushing in the control panel and install an electrical conduit connector. Connect the hot, neutral, and ground leads to the terminal block using quick connect terminals. Refer to the wiring diagram for the correct terminal locations for each wire lead.

CAUTION

Do not energize the electric circuit before the water heater tank is filled with water.

This controller is Polarity sensitive. If the Hot and Neutral Supply voltage is reversed, the controller will not sense flame and the water heater will not operate. Verify polarity before connecting the water heater.

WARNING

If the unit is exposed to the following, do not operate water heater until all corrective steps have been made by a factory authorized independent service contractor or qualified service professional.

1.Flooding to or above the level of the burner or controls

2.External firing

3.Damage

4.Firing without water

5.Sooting

NEVER OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE WATER HEATER.

WIRING DIAGRAM AND SCHEMATIC
Figure 23	Wiring Diagram and Schematic
OPERATING INSTRUCTIONS	GENERAL INSTRUCTIONS

WARNING

Water heaters are heat-producing appliances. To avoid damage or injury there must be no materials stored against the water heater or direct vent system, and proper care must be taken to avoid unnecessary contact (especially by children) with the water heater and direct vent system. UNDER NO CIRCUMSTANCES SHOULD FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER. Installation or service of this water heater requires ability equivalent to that of a licensed tradesman in the field involved. Plumbing, air supply, venting, gas supply and electrical work are required.

Light the unit in accordance with the operating instructions label attached to the water heater.

Under no circumstances should the input rate exceed the input rate shown on the water heater rating plate. Over firing could result in damage or sooting of the water heater.

TO FILL THE WATER HEATER

1.Close the water heater drain valve by turning the knob or valve stem clockwise. If alternative water connections are provided but not used, make certain they are plugged (i.e. rear connections).

2.Open the cold water supply shut-off valve.

3.Open several hot water faucets to allow air to escape from the system.

4.When a steady stream of water flows from the faucets, the water heater is filled. Close the faucets and check for water leaks at the water heater drain valve, combination temperature and pressure relief valve and the hot and cold water connections.

SEQUENCE OF OPERATION
1.	A call for heat from thermostat	6.	Main burner ON
2.	Blower ON	7.	Flame signal confirmed
3.	Pressure switch proves blower operation	8.	Thermostat satisfied
4.	Blower pre-purge	9.	Main burner OFF
5.	Igniter warm-up	10. Blower post-purge

1 5

OPERATING INSTRUCTIONS

GENERAL INSTRUCTIONS

TO FILL THE WATER HEATER

SEQUENCE OF OPERATION