Natco ANSI Z 21.10.3, Руководство по обслуживанию

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used to determine the operating status of the appliance and provide assistance when troubleshooting any problems which may occur.
All indicators are of the solid state variety and should last for the life of the appliance. The controller has sufficient built-in memory to
retain the programmed temperature set point in the event input power is ever interrupted. The final component of the control system
includes a temperature sensing probe which is threaded into the side of the tank. This probe is of unique construction in that both the
temperature sensing/control and safety limit functions are performed by this single device. All probe components are of solid state con-
struction to provide extended operational life.
START UP PROCEDURE
1. Make sure that the Super-E has been installed to these instruction procedures; along with all applicable province and local
codes;
2. Make sure all gas piping and connections have been verified and inspected by all applicable inspectors. Turn on gas supply.
Insure that the gas line and the LP tank, if applicable, have been properly purged. Failure to properly purge the gas lines will
result in failure to operate;
3. Make sure that the cold water supply has been turned on and that the Super-E is completely filled with water. Verify this by
opening a hot water faucet, and allowing water to flow until all air is removed and a clear water flow is present;
4. Turn on electrical supply;
5. The control will first display "102", then "88.8", which is the control display test; and finally the actual tank temperature at the
probe.
SET POINT ADJUSTMENT PROCEDURE
The three digit LED display will illustrate actual water temperature within the tank under normal operating conditions. However, this
display is also used to indicate the temperature set point when in the programming mode; and also ignitor amp draw and flame current.
The controller has a temperature set point range 70 degrees F. to 160 degrees F. The factory set point is 118 degrees F.
DANGER
Water temperature over 125 degrees F. can cause severe burns instantly,
or death from scalds. Children, disabled, and elderly are at highest risk
of being scalded. See instruction manual before setting temperature at
water heater. Feel water before bathing or showering! Temperature
limiting valves are available.
VERY IMPORTANT NOTE:
POWER MUST BE APPLIED TO THE CONTROLLER PRIOR TO ANY PROGRAMMING OPERATIONS.
SET POINT ADJUSTMENT PROCEDURE (CONTINUED)
To change or access the programmed temperature set point value, utilize the red button on the display panel. Momentarily depressing
the button will briefly illustrate the existing set point value. If the button is held down for more than one second, the programming mode
is entered and the set point value will begin incrementing by one degree per second. When the desired set point value is reached, sim-
ply release the button and the controller will automatically retain this value in temporary memory. After 30 seconds, this new set point
will be retained in permanent memory.
NOTE:
IF POWER IS INTERRUPTED DURING THIS 30 SECOND PERIOD, THE NEW SET POINT WILL NOT BE RETAINED IN PERMA-
NENT MEMORY. IT IS A GOOD PRACTICE TO RE-CHECK THE SET POINT VALUE APPROXIMATELY 60 SECONDS AFTER A
NEW VALUE HAS BEEN RE-ENTERED.
If the button is held down long enough, the set point will reach 160 degrees F. and stop, since this is its maximum value. At this point,
if the desired set point has not been obtained, release the button and depress it again, the set point will decrement down to 70 degrees
F. and stop. The set point value will now restart at 70 degrees F. (its minimum) and once again increase in value for as long as the
button is pressed.
DIFFERENTIAL ADJUSTMENT PROCEDURE
To allow proper water heater operation, the control has a 8 degree F. "window" around the set point. This means that the burner will
be turned on when the water temperature drops to 4 degrees F. below the set point, and it will be turned off when the water tempera-
ture reaches 4 degrees F above the set point. Thus, if the set point is set to 120 degrees F., the control will turn on the burner when
the water temperature drops to 116 degrees F., and will continue to heat the water until the temperature reaches 124 degrees F. The
differential is factory set to 8 degrees F. (+ or- 4 degrees F.) If another differential is required, the value of the differential can be field
adjusted by holding the set point button when power is applied to the control. Shut off power to the control. Next hold in the set point
button. Now reapply power to the control. Using the set point button, the value of the differential can be incremented or decremented
as above. When the proper value is reached, release the button and the new differential has been stored into permanent memory.
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