HTP CG300N65 - Manual (Page 20)

20
LP-436 REV. 3.21.14
Drafthood Operation
It is important to check that the ventilation system is working properly once the water
heater main burner has been lit. Wait 10 minutes after lighting the burner. Then
introduce a match or candle around the opening of the drafthood. If the flame is
drawn towards the opening, this indicates proper ventilation. If the flame flutters or is
blown out, combustion gases are escaping from the drafthood opening. If this
occurs, shut the water heater off immediately and locate the problem. Do not try
and operate the water heater again until you are satisfied that the problem has
been corrected.
Water Temperature Regulation
The higher the temperature setting, the greater the risk of scalding. Hot water
can cause third degree burns in 1 second at 160
o F (71 o C), 5 seconds at 150 o F
(65 o C), and 30 seconds at 130 o F (54 o C). In households where there are
children, physically challenged individuals, or elderly persons, mixing valves
for point of use are necessary as a means of reducing the scalding potential of
hot water. Failure to install a mixing valve can result in serious personal injury
or death.
The water temperature for all models is controlled by a thermostat with two sensing
elements. One sensor is located near the top of the tank and the other is near the
center. The thermostat is factory adjusted to its lowest temperature setting. To
adjust the water temperature, insert a small flat head screwdriver into the slotted
screw located in the hole on the front of the thermostat. See Figure 14. Turn the
temperature dial to the desired setting. To maximize the efficiency of the water
heater and reduce the risk of scalding, it is recommended that the dial be adjusted
to the lowest setting that produces an acceptable hot water supply. The dial may be
set from 100
o
F to 180
o
F (38
o
C to 82
o
C).
When hot water is drawn from the tank in frequent short bursts, a condition known as “stacking” is
created. “Stacking” is the result of increased cycling of the burner and can produce very hot water
temperatures at the hot water outlet. Always remember to check the hot water coming out of any faucet
with your hand before use. This will reduce the risk of scalding related injury.
Should overheating occur or the gas supply fail to shut off, close the gas supply manual shut-off
valve. Failure to follow this instruction can result in serious personal injury or death.
Out of Fuel
If your water heater should run out of gas, proceed as follows:
1. Set the thermostat to the lowest setting.
2.
Turn the gas control knob clockwise to “OFF”.
3. Turn off all electric power to the appliance.
4. Once the gas supply has been reestablished, proceed to Lighting Instructions.
PART 4 – GENERAL MAINTENANCE
Housekeeping
DO NOT STORE or use gasoline or other flammable vapors or liquids around the water heater.
DO NOT BLOCK or in any way restrict the flow of fresh air to the water heater.
DO NOT PUT or store any objects on the top of the water heater.
Failure to follow these instructions can result in property damage, personal injury, or death.
Keep the area around the water heater clean and free of dust, lint, and dirt. Vacuum any dirt as
required. Make sure that all of the minimum clearances to combustible materials are being maintained.
Condensation
As moisture from the products of combustion comes in contact with the cold surface of the inner tank, it may condense. This situation
will usually occur:

When the water heater is filled with cold water for the first time.
Figure 14 - Thermostat