A.O. Smith Residential Power Vent Gas Water Heaters with Hot Surface Ignition Water Heater User Manual


 
Installing the New Water Heater (cont’d)
13
Filling the Water Heater
To fill the water heater with water:
1. Close the water heater drain valve by turning the han-
dle to the right (clockwise). The drain valve is on the
lower front of the water heater.
2. Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open
when the water heater is in use.
3. To insure complete filling of the tank, allow air to exit by
opening the nearest hot water faucet. Allow water to run
until a constant flow is obtained. This will let air out of
the water heater and the piping.
4. Check all new water piping for leaks. Repair as needed.
Wiring
The water heater comes equipped with a 7 foot power cord
which can be used to connect to a 110/120 volt power
source if, (1) local codes allow, and (2) there is a three
prong grounded receptacle available. This unit must have
a grounded outlet to operate.
OPTIONAL Field Installed Wiring
1. Provide a way to easily shut off the electric power when
working on the water heater. This could be with a cir-
cuit breaker or fuse block in the entrance box or a sepa-
rate disconnect switch.
2. Install and connect a circuit directly from the main fuse
or circuit breaker box. This circuit must be the right size
and have its own fuse or circuit breaker.
3. A standard
1
2 conduit opening has been made in the
water heater junction box for the conduit connection.
4. Use wire nuts and connect the power supply wiring to
the wires inside the water heaters junction box.
7' MAXIMUM
CORD LENGTH
(Factory supplied)
You must provide all wiring of the proper size outside of
the water heater. You must obey local codes and electric
company requirements when you install this wiring.
If you are not familiar with electric codes and practices, or
if you have any doubt in your ability to connect the wiring
to this water heater, obtain the service of a competent elec-
trician. Contact a local electrical contractor and/or the local
electric utility.
You must provide all wiring, (1) to a receptacle or, (2)
between the water heater and junction box when the
power cord is not used.
WARNING
Do not use an extension cord. If there is not a suitable
receptacle and/or local codes prohibit use of a power cord,
field wiring must be provided.
WARNING
WATER HEATERS EQUIPPED FOR ONE TYPE VOLTAGE
ONLY: This water heater is equipped for 110/120 volts
only. DO NOT USE THIS WATER HEATER WITH ANY
VOLTAGE OTHER THAN THE ONE SHOWN ABOVE.
Failure to use the correct voltage can cause problems
which can result in DEATH, SERIOUS BODILY INJURY
OR PROPERTY DAMAGE. If you have any questions or
doubts consult your electric company.
CAUTION
If wiring from the fuse box or circuit breaker box was alu-
minum for the old water heater, replace it with copper
wire. If you wish to reuse the existing aluminum wire, have
the connection at the water heater made by a competent
electrician. Contact a local electrical contractor and/or the
local electric utility.
CAUTION
Never use this water heater unless it is completely filled
with water. To prevent damage to the tank, the tank must
be filled with water. Water must flow from the hot water
faucet before turning “ON” gas to the water heater.