General Operation; Maintenance - Lochinvar TNR-I&S-02 Installation & Service Manual

TEMPERATURE ADJUSTMENT
The temperature selector knob of the thermostat has been adjusted to
120° F when shipped from the factory.
NOTICE
The lower the temperature setting, the greater the energy efficiency,
both to heat the water and to maintain the storage temperature
during standby periods. Lower water temperatures also extend tank
life. Remember, no water heating system will provide exact
temperatures at all times. Allow a few days of operation at this
setting to determine the correct temperature setting consistent with
the requirements for the installation.
This water heater, when set at a lower temperature setting is not
capable of producing hot water of sufficient temperature for sanitizing
purposes
.
During the winter season or any cold period, you may desire a higher
temperature setting to adjust for the colder incoming water. This adjustment,
however, may cause additional condensation to form on the colder tank
surface. This does not mean the tank is leaking. During summer months,
the warmer incoming water temperatures will benefit the performance of
your water heater and reduce the amount of condensation developed.
Condensation does not mean your tank is leaking. Most of reported tank
leaks on installation are proven to be condensation. To avoid unnecessary
inconvenience and expense, make sure the tank is leaking before calling
an independent servicing contractor or qualified service professional.
Hotter water increases the risk of scald injury. Scalding may occur
within 5 seconds at a temperature setting of 135°F (57°C). To protect
against hot water injury, install an anti-scald tempering valve in the
water system. This valve will reduce point of discharge temperature
by mixing cold and hot water in branch water lines. A licensed
plumbing professional or local plumbing authority should be consulted.
This water heater is equipped with an energy cut out device to
prevent overheating. Should overheating occur or the gas supply
fail to shut off, turn off the manual gas control valve to the appliance
and call a qualified service agency.
If the water heater is to remain idle for 30 days or more or is subjected to
freezing temperatures while shut off, the water heater and piping should
be fully drained and the drain valve should be left fully open. Refer to the
"General Operation" section of this Installation and Operating Instructions
Manual for the procedure on draining the water heater.
BURNER FLAME CHECK
At the time of installation and at monthly intervals, a visual check of the
burner flames should be made to determine if they are burning properly.
The main burner may be seen through the sight glass window on the front
of the combustion insert mounting bracket (Figure 25). The burner flames
should be a blue flame near the burner surface in a uniform flame pattern.
Occasional yellow or white streaks are normal.
CAUTION
DANGER
Figure 25

MAINTENANCE

DO NOT ATTEMPT TO REPAIR GAS VALVE.
DO NOT ATTEMPT TO REPAIR IGNITION MODULE.
DO NOT ATTEMPT TO REPAIR VENTURI.
DO NOT ATTEMPT TO REPAIR THERMOSTAT BOARD.
DO NOT ATTEMPT TO REPAIR TRANSFORMER.
DO NOT ATTEMPT TO REPAIR PRESSURE SWITCH.
KEEP APPLIANCE AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS,
GASOLINE AND OTHER FLAMMABLE VAPORS AND LIQUIDS.
Water heater maintenance includes periodic tank flushing and cleaning,
and removal of lime scale. The unit should be inspected and adjusted to
maintain proper combustion. Refer to Table 4, "Suggested Maintenance
Schedule". A periodic inspection of the venting system should be made.
MAINTENANCE SCHEDULE
Following are the instructions for performing some of the recommended
maintenance. Unit inspection and adjustment should be performed by a
competent technician.
1 7
TNR-I&S-02
Sight Glass Location
DANGER
GENERAL