State GS6 75 URRBS - Manual (Page 15)

15
• To check UN•LIME for continued use or reuse, place some lime
scale or white chalk into a glass with a small amount of solution. If
the material is vigorously dissolved by the solution, the UN•LIME
can be reused. If not, the UN•LIME has been weakened and
should be replaced.
8. When deliming has been completed, the heater should be fl ushed
for 3 to 5 minutes with fresh water.
• Remove the deliming equipment, install the drain valve, open the
cold water inlet line and allow water to fl ow through heater and out
drain valve. Don’t forget to plug vent and cap opening in Flo-Jug.
9. When fl ushing is completed:
• Fill heater being certain to expel air from tank through a nearby
hot water faucet or, if removed, the relief valve opening.
• The heater relief valve can be washed in UN•LIME if it is limed.
• Replace relief valve if removed for deliming.
• Restore gas, oil or electrical supply to heater.
• Check for water leakage.
10. Flo-Jug cleanup:
• Allow scale to separate from UN•LIME and settle on bottom of
Flo-Jug.
• Pour off UN•LIME into plastic container and check for reuse.
• Rinse sediment from Flo-Jug.
DRAINING AND FLUSHING
It is recommended that the tank be drained and fl ushed
every 6 months to remove sediment which may build up
during operation. The water heater should be drained if
being shut down during freezing temperatures. To drain the
tank, perform the following steps:
1. Turn off the gas to the water heater at the manual gas
shut off valve.
2. Open a nearby hot water faucet until the water is no
longer hot.
3. Close the cold water inlet valve.
4. Connect a hose to the drain valve and terminate it to an
adequate drain or external to the building.
5. Open the water heater drain valve and allow all of the
water to drain from the tank. Flush the tank with water
as needed to remove sediment.
6. Close the drain valve, refi ll the tank, and restart the
heater as directed in this manual.
If the water heater heater is going to be shut down for an
extended period, the drain valve should be left open.
iMPORTANT: ccondensation may occur when refi lling the
tank and should not be confused with a tank leak.
Use this formula to “clock” the meter. Be sure that other gas consuming
appliances are not operating during this interval.
3,600 X H = Btu/h
T
T = Time in seconds needed to burn one cubic foot of gas.
H = Heating value of gas in Btu’s per cubic foot of gas.
Btuh = Actual heater input rate.
Example:
T = 47.2 seconds/ft 3
H = 1,050 Btu/ft 3 (natural gas)
Btuh = ?
3,600 X 1,050 = 75,100 Btu/h (22Kw)
50.3
Compare the actual input rate to that given on the heater’s rating plate.
In the example, the full input rate should be 75,100 Btu/h (22 Kw) for
natural gas.
VENT SYSTEM
Examine the venting system every 6 months for obstructions and/or
deterioration of vent piping.
BLOWER MAINTENANCE
For safety and satisfactory operation it is recommended that the blower
be checked once a year by a competent service person.
1. MOTOR - The motor is factory oiled and sealed and requires no
further maintenance.
2. WHEEL - Wheel must be clean of soot, ash or any other coating
which inhibits either rotation or air fl ow. Remove all foreign material
from vent system.
3. The pressure switch is inside the blower control box and is connected
to the blower housing with a tube. This tubing should be soft and
pliable and show no sign of deterioration.
RELIEF VALVE
At least once a year the temperature and pressure relief valve should
be checked to ensure that it is in operating condition. (During manual
operation of this valve, avoid any contact with hot water and take
preventive steps for water damage). Lift the lever at the top of the valve
several times until the valve seats properly and operates freely.
WARNING
THE WATER PASSING OUT OF THE VALVE DURING THIS CHECKING
OPERATION MAY BE EXTREMELY HOT. AVOID CONTACT AND
DISCHARGE SAFELY TO PREVENT WATER DAMAGE.
If the temperature and pressure relief valve on the heater discharges
periodically or continuously, a problem exists. This may be due to
unusually high water temperatures or pressures in the system, or to a
faulty relief valve. Contact your dealer or a qualifi ed service technician
to fi nd the cause of the problem and to correct it. This may also be due
to thermal expansion in a closed water supply system. Contact the water
supplier or local plumbing inspector on how to correct this situation.
DO
NOT PLUG THE TEMPERATURE AND PRESSURE RELIEF VALVE.
WARNING
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO
SHUT OFF, TURN OFF THE MANUAL GAS CONTROL VALVE TO THE
APPLIANCE.
HOT WATER ODOR
On occasion, hot water may develop a strong odor. If this occurs drain
the heater completely, fl ush thoroughly, and refi ll. If the problem persists,
chlorination of the heater and replacement of the factory installed
magnesium anode with aluminum anode may correct the condition.
Occasionally water softener companies recommend removal of heater
anodes for odor reasons.