American Water Heater DCG - Manual (Page 19)

19 19
OPERATING YOUR WATER HEATER
Read and understand these directions thoroughly
before attempting to operate the water heater (see
Lighting Instructions on page 20). Check the data plate
on the front of the water heater for the correct gas. Do
not use this water heater with any gas other than the
one listed on the data plate. If you have any questions
or doubts, consult your gas supplier or gas utility com-
pany.
L.P. (Propane) Models
Propane gas is heavier than air and in the occurrence
of a leak in the system, the gas will settle on the floor
level. Basements, crawl spaces, skirted areas under
mobile homes (even when ventilated), closets and
areas below ground level will serve as pockets for the
accumulation of gas. Before lighting a propane gas
water heater, smell all around the appliance at floor
level. If you smell gas, follow the instructions as given
in the warning on the front page.
When your propane tank runs out of fuel, turn off the
gas at all gas appliances including pilot lights. After the
tank is refilled, all appliances must be re-lit according to
their manufacturer’s instructions.
Water Heater Operation
When the thermostat calls for heat, it will signal the
damper to open. Once the damper fully opens, it will
signal the igniter to light the pilot. The pilot will then
ignite the main burners. The water heater will operate
until the call for heat ends. At this time the main
burners and pilot will shut-off and the damper will close.
See Figure 12 below for a sequence of operation
flowchart.
Figure 12: Sequence of Operation
PILOT IGNITES
BURNER
DAMPER OPENS
THERMOSTAT CALLS
FOR HEAT
ELECTRICAL POWER
APPLIED TO UNIT
DAMPER CLOSES
BURNER & PILOT
SHUT OFF
THERMOSTAT
SATISFIES
WATER HEATER
OPERATES TILL CALL
FOR HEAT ENDS
PILOT IGNITES
Index