Lochinvar CG 120 THRU 400A, Установка, эксплуатация и обслуживание

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VENTING SYSTEM
Examine the venting system every six months for obstructions
and/or deterioration of the vent piping.
Remove all soot or other obstructions from chimney which will
retard free draft.
REMOTE STORAGE TANK
TEMPERATURE CONTROL
The water temperature in the storage tank (if used) is controlled
by the storage tank temperature control. The sensing element is
mounted in the hot water storage tank, see page 16.
A change in water temperature in the storage tank lower than the
tank temperature control setting will cause the sensor to activate the
circulating pump. The pump then circulates the water through the
heater where the thermostat senses the drop in water temperature
and activates main burner operation of the appliance.If the storage
tank temperature control is out of calibration, replace with new control.
WARNING
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL
TO SHUT OFF, TURN OFF THE MANUAL GAS CONTROL VALVE
TO THE APPLIANCE.
RELIEF VALVE
At least once a year, the temperature and pressure relief valve
should be checked to ensure that it is in operating condition. Lift
the lever at the top of the valve several times until the valve seats
properly and operates freely.
If the appliance installation includes other relief valves, such as
in “remote” storage tanks etc., check their relief valve operation
with the same frequency.
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 qualified service technician to
find 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, flush thoroughly, and refill. If the problem persists,
chlorination of the heater and replacement of the factory installed
magnesium anodes with aluminum anodes may correct the condition.
Occasionally water softener companies recommend removal of
heater anodes for odor reasons.
CAUTION
Unauthorized removal of the anode(s) will void the warranty. For
further information contact your dealer.
ANODE ROD INSPECTION
The heater tank is equipped with anode rods to provide corrosion
control. At least once a year the anode rods should be checked
to determine if replacement is necessary. Initially the anode rods
are approximately 7/8” (22mm) in diameter with a 1/8” (3mm)
diameter steel core wire running down the center of the anode
material. THE ANODES SHOULD BE REPLACED when the 1/8”
(3mm) diameter core wire is visible as this means that the anode
material has been expended in the control of corrosion.
For models with top inlet and outlet, it is recommended that, before
removing the inner cover for cleaning, inspection or removal of
inner parts, you obtain two new nipple collars, part no. 74060.
The nipple collars on the heater will usually be damaged when
removed. New pipe collars will insure that the seal is such as to
prevent leakage of flue products when properly installed.
NOTE: Anode rod inspection may need to be made more frequently
in areas subject to acid rain that obtains their water supply from
surface water as the low pH will accelerate anode activity.
CAUTION:
Close cold water inlet valve serving heater and
open nearby hot water faucet to relieve the pressure in the
heater before attempting to remove anode(s) for inspection.
RECOMMENDED PROCEDURE FOR
PERIODIC REMOVAL OF LIME DEPOSITS FROM
TANK TYPE COMMERCIAL WATER HEATERS
The The amount of calcium carbonate (lime) released from water is
in direct proportion to water temperature and usage, see chart.
The higher the water temperature or water usage, the more lime
deposits are dropped out of the water. This is the lime scale which
forms in pipes, heaters and on cooking utensils.
Lime accumulation not only reduces the life of equipment but also
reduces efficiency of the heater and increases fuel consumption.
The usage of water softening equipment greatly reduces the
hardness of the water. However, this equipment does not
always remove all of the hardness (lime). For this reason it is
recommended that a regular schedule for deliming be maintained.
The time between cleaning will vary from weeks to months
depending upon water conditions and usage. The depth of lime
buildup should be measured periodically. Heaters equipped with
cleanouts will have about 2” of lime buildup when the level of
lime has reached the bottom of the cleanout opening. A schedule
for deliming should then be set up,based on the amount of time
it would take for a 1” buildup of lime. It is recommended that the
water heater initially be inspected after 6 months.
Example 1:
If initial inspection after 6 months shows 1/2” of lime accumulation.
Therefore, the heater should be delimed once a year.
Example 2:
If initial inspection after 6 months shows 2” of lime accumulation.
Therefore, the heater should be delimed every 3 months.
FIGURE 18