1 5
TNR-I&S-02
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.
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.
OPERATING INSTRUCTIONS
GENERAL INSTRUCTIONS
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
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.
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
