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

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• Do not cover the instruction manual. Keep it on the side of the
water heater or nearby for future reference.
• Do not allow insulation to come within 2” (5 cm) of the burners,
to prevent blockage of combustion air flow to the burners.
• Do not allow insulation to come within 9” (23 cm) of floor, (within
2” (5 cm) of bottom cover) to prevent blockage of combustion
air flow to the burners.
• Do inspect the insulation blanket frequently to make sure it
does not sag, thereby obstructing combustion air flow.
• Do obtain new labels from Lochinvar for placement on the
blanket directly over the existing labels.
HIGH ALTITUDE INSTALLATIONS
WARNING
INSTALLATIONS ABOVE 2000 FEET (610 METERS) REQUIRE
REPLACEMENT OF THE BURNER ORIFICES IN ACCORDANCE
WITH THE CURRENT EDITION OF NATIONAL FUEL GAS
CODE (ANSI Z223.1). FOR CANADIAN INSTALLATIONS
CONSULT NATURAL GAS AND PROPANE INSTALLATION
CODE CAN/CSA-B149.1 CURRENT EDITION. FAILURE TO
REPLACE THE ORIFICES WILL RESULT IN IMPROPER AND
INEFFICIENT OPERATION OF THE APPLIANCE RESULTING
IN THE PRODUCTION OF INCREASED LEVELS OF CARBON
MONOXIDE GAS IN EXCESS OF SAFE LIMITS WHICH COULD
RESULT IN SERIOUS PERSONAL INJURY OR DEATH.
You should contact your gas supplier for any specific changes
which may be required in your area.
As elevation above sea level is increased, there is less oxygen
per cubic foot of air. Therefore, the heater input rate should be
reduced at high altitudes for satisfactory operation with the reduced
oxygen supply. Failure to make this reduction would result in an
overfiring of the heater causing sooting, poor combustion and/or
unsatisfactory heater performance.
Ratings specified by manufacturers for most appliances apply
for elevations up to 2000 feet (610 m). For elevations above
2000 feet (610), ratings must be reduced at the rate of 4% for
each 1000 feet (305 m) above sea level. For example, if a
heater is rated at 120,000 Btuh (35 Kwh) at sea level, to rate
the heater at 4000 feet (1219 m), you subtract 4 (once for each
thousand feet) x 04 (4% input reduction) x 120,000 (original
rating) from the original rating. Therefore, to calculate the
input rating at 4,000 feet (121.9 m): 4 x .04 x 120,000 =19,200
Btuh (5.6 Kwh), 120,000 (35 Kwh) - 19,200 (5.6 Kwh) = 100,800
Btuh (29.4 Kwh). At 6000 feet (1829 m) the correct input rating
should be 91,200 Btuh (26.7 Kwh).
The input reduction is primarily achieved by reducing the size
of the main burner orifices. To do this, the main burner orifices
require replacement with orifices sized for the particular
installation elevation. Correct orifice sizing and parts may
be obtained from Lochinvar, LLC. When ordering, be sure to
state the model number and the altitude of the location where
the water heater is being installed.
Upon completion of derating of the heater, adjustment to the gas
pressure regulator may be required. See CHECKING THE INPUT
section in this manual for inlet and manifold pressure requirements.
Also due to the input rating reduction required at high altitudes,
the output rating of the appliance is reduced and should be
compensated for in the sizing of the equipment for application.
FEATURES
THE ELIMINATOR
(SELF-CLEANING SYSTEM)
These units include The Eliminator (Self-Cleaning System)
installed in the front water inlet. See figure 2. The Eliminator
must be oriented correctly for proper function. There is a marked
range on the pipe nipple portion of the Eliminator, that must be
aligned with the top of the inlet spud. A label above the jacket
hole has an arrow that will point to the marked portion of the
pipe nipple if the orientation is correct. If the arrow does not point
within the marked range on the pipe nipple, adjust the pipe nipple
to correct. A pipe union is supplied with the Eliminator to reduce
the probability of misaligning the Eliminator accidentally while
tightening the connection to the inlet water supply line. Improper
orientation of the Eliminator can cause poor performance of the
heater and can significantly reduce outlet water temperatures
during heavy draws.
NOTE: The inlet tube may have 1, 3 or 7 cross-tubes.
FIGURE 2
For proper function, The Eliminator must be oriented correctly.
There is a marked range on the pipe nipple that must be aligned with
the top of the inlet spud (check for label on the appliance) to assure
proper orientation. Please check to confirm that the marked range
is in alignment with the top of the spud. A pipe union is supplied
with The Eliminator to help eliminate the possibility of changing
the orientation by accidentally over-tightening the inlet supply line.
Improper orientation of The Eliminator may cause temperature
build-up issues or spells of colder than usual water temperatures.
HIGH LIMIT SWITCH
The digital thermostat (Fig. 3) contains the high limit (energy cutoff)
sensor. The high limit switch interrupts main burner gas flow should
the water temperature reach 203°F (95°C).
In the event of high limit switch operation, the appliance cannot be
restarted unless the water temperature is reduced to approximately
120°F (49°C). The high limit reset button on the front of the control
then needs to be depressed.