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Plastic pipe must be the only material used for the condensate line. Steel, brass, copper or other
materials will be subject to corrosion or deterioration. A second vent may be necessary to prevent a
condensate line vacuum lock if a long horizontal run is used. An increase in condensate line diameter
may be necessary to allow condensate to drain properly. Support of the condensate line may be
necessary to avoid blockage of the condensate flow.
PART 9 – START-UP PROCEDURE
FOR YOUR OWN SAFETY READ BEFORE OPERATING
1. This appliance does not have a pilot light. It is equipped with an ignition device which automatically
lights the burner. Do not try to light the burner by hand.
2. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor
because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas suppliers' instructions.
• If you cannot reach your gas supplier, call the fire department.
3. Turn on gas shutoff valve (located inside of the down near burner) so that the handle is aligned with the
gas pipe. If the handle will not turn by hand, don't try to repair it, call a qualified service technician. Force
or attempted repair may result in a fire or explosion.
4. Do not use this appliance if any part has been under water. Immediately call a qualified service
technician to inspect the appliance and to replace any part of the control system and any gas control
which has been under water.
5. The heater shall be installed so the gas ignition system components are protected from water (dripping,
spraying, rain, etc.) during appliance operation and service (circulator replacement, condensate trap,
control replacement, etc.)
A. OPERATING INSTRUCTIONS
If you smell gas, STOP. Follow listed safety instructions above. If you do not smell gas, follow the next
steps.
1. Turn on all electric power to appliance. Make sure tank is full with cold water and purge all piping. To
assure adequate purging, open all hot water faucets.
2. Adjust the temperature set point of the heater to the desired level. The factory default setting is 119
o
F.
If changes are necessary, follow “Overall Appliance and Control Operation” in this section.
3. If the appliance fails to start, refer to the Troubleshooting section in the back of this manual.
B. OVERALL APPLIANCE AND CONTROL OPERATION
To adjust the temperature of stored water, press and hold {S3} for 2 seconds. The first item is: DU: Water
Temperature Set Point – factory set at 119°F. Adjust down by pressing {S1} to a temperature as low as
95°F. Adjust up as high as 160°F by pressing the {S2}. Press {S3} again to display DH, the differential
which is factory set at 7°F and adjustable down to 1°F by pressing {S1} and up to 18°F by pressing {S2}.
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