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12
1. Provide complete combustion of gas.
2. Cause rapid ignition and carryover of flame across entire burner.
3. Give reasonably quiet operation during ignition, burning and extinction.
4. Cause no excessive lifting of flames from burner ports.
If preceding burner characteristics are not evident, check for accumulation
of lint or other foreign material that restricts or blocks the air openings to the
heater or burner.
WARNING
SOOT BUILD-UP INDICATES A PROBLEM THAT REQUIRES CORRECTION
BEFORE FURTHER USE. CONSULT WITH A QUALIFIED SERVICE TECHNICIAN.
Should the main burner or burner air openings require cleaning, remove the
burner and clean with a soft brush. Clean main burner orifice with a
suitable soft material.
CHECK FOR GOOD FLOW OF COMBUSTION AND VENTILATING AIR TO THE
UNIT. MAINTAIN A CLEAR OPEN AREA AROUND THE HEATER AT ALL TIMES.
DO NOT STORE COMBUSTIBLES OR FLAMMABLE LIQUIDS NEAR OR
AROUND AN APPLIANCE.
CHECKING GAS INPUT
For appliance installation locations with elevation above 2000 ft.(610m)
refer to HIGH ALTITUDE INSTALLATIONS section of this manual for input
reduction procedure.
With this heater in operation, determine whether it is receiving the full rated
input of gas. This may be done by timing the gas meter and measuring gas
pressure with a gauge or manometer. When the heater is operating at full
capacity (full gas input) it should consume approximately 1 cubic foot of gas
in the time shown in table 6.
TABLE 6
INPUT CHECK TIME REQUIRED TO CONSUME 1 CU. FT. OF GAS
Type of BTU Per Time Required To Consume
Model Gas Cu. Ft. 1 Cu. Ft. of Gas
BTI-80 Natural 1050 47.3 sec.
BTI-100 Natural 1050 37.8 sec.
Use this formula to “clock” the meter. Be sure that other gas consuming
appliances are not operating during this interval.
3,600 X H = Btuh
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: (Using BTI-80 heater)
T = 47.3 seconds/ft
3
H = 1,050 Btu/ft
3
(natural gas)
Btuh = ?
3,600 X 1,050 = 80,000 Btuh (23.4Kwh)
47.3
Compare the actual input rate to that given on the heater’s rating plate. In the
example, the BTI-80’s full input rate should be 80,000 Btuh (23.4 Kwh) for
natural gas.
VENT SYSTEM
Examine the venting system every 6 months for obstructions and/or
deterioration of vent piping.
6. After it has been determined that each appliance connected to the
venting system properly vents when tested as outlined above, return
doors, windows, exhaust fans, fireplace dampers and any other gas
burning appliance to their previous conditions of use.
7. If improper venting is observed during any of the above tests, the
venting system must be corrected.
WARNING
FAILURE TO CORRECT BACK DRAFTS MAY CAUSE AIR CONTAMINATION
AND UNSAFE CONDITIONS.
HIGH TEMPERATURE LIMIT SWITCH (ECO)
The water heater is equipped with a manual reset type high limit (Energy
Cutoff) sensor. The high limit switch interrupts the main burner gas flow
should the water temperature reach 195°F (90°C). The high limit switch
must be manually reset by turning the power to the water heater off for 5
seconds then back on and cannot be reset until the water temperature
drops below 120°F (49°C). It is important that a serviceman be called to
determine the reason for limit operation and thus avoid repeated thermostat
resetting.
WARNING
THE ON/OFF SWITCH MUST HAVE BEEN IN THE OFF POSITION FOR
AT LEAST 5 MINUTES. This waiting period is an important safety step.
Its purpose is to permit gas that may have accumulated in the combustion
chamber to clear. IF YOU DETECT GAS ODOR AT THE END OF THIS
PERIOD DO NOT PROCEED WITH LIGHTING. RECOGNIZE THAT GAS
ODOR, EVEN IF IT SEEMS WEAK, MAY INDICATE PRESENCE OF
ACCUMULATED GAS SOMEPLACE IN THE AREA WITH RISK OF FIRE OR
EXPLOSION. SEE THE FRONT PAGE FOR STEPS TO BE TAKEN.
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT
OFF, TURN OFF THE MANUAL GAS CONTROL VALVE TO THE APPLIANCE.
SERVICE INFORMATION
The installer may be able to observe and correct certain problems which
may arise when the unit is put into operation. HOWEVER, it is recommended
that only qualified servicemen, using appropriate test equipment, be allowed
to service the heater.
FOR YOUR SAFETY AND SATISFACTORY OPERATION, IT IS
RECOMMENDED THAT THIS HEATER BE CHECKED ONCE A YEAR BY A
COMPETENT SERVICE PERSON.
USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS COMPONENTS
WEAR OUT OVER A PERIOD OF TIME. THE GAS CARRYING COMPONENTS
OF THIS APPLIANCE SHOULD BE INSPECTED FOR PROPER OPERATION
PERIODICALLY BY A QUALIFIED SERVICE TECHNICIAN.
MAIN BURNER AND IGNITER
Check main burner (figure 7) at least every 6 months for proper flame
characteristics. The main burner should display the following
characteristics:
FIGURE 7-MAIN BURNER AND IGNITER ASSEMBLY - NATURAL GAS