A.O. Smith BTR 500, Instruction Manual

Page: 10 / 52

10
insulation Blanket
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Breathing Hazard - Carbon Monoxide Gas
Insulation blankets are available to the general public for external
use on gas water heaters but are not necessary with these
products. The purpose of an insulation blanket is to reduce the
standby heat loss encountered with storage tank heaters. The
water heaters covered by this manual meet or exceed the energy
Policy Act standards with respect to insulation and standby heat
loss requirements, making an insulation blanket unnecessary.
Should you choose to apply an insulation blanket to this
heater, you should follow these instructions. See the Features
and Components section of this manual for identification of
components mentioned below. Failure to follow these instructions
can restrict the air flow required for proper combustion, potentially
resulting in fire, asphyxiation, serious personal injury or death.
• do not apply insulation to the top of the water heater, as this
will interfere with safe operation of the exhaust inducer.
• do not cover the gas valve, thermostat or the Temperature-
Pressure relief Valve.
• do not allow insulation to come within 2” (5 cm) of the burners,
to prevent blockage of combustion air flow to the burners.
• do not allow insulation to come within 9 inches (23 cm)
of floor, (within 2 inches (5 cm) of bottom cover) to prevent
blockage of combustion air flow to the burners..
• do not cover the instruction manual. keep it on the side of
the water heater or nearby for future reference.
• do obtain new warning and instruction labels from the
manufacturer for placement on the blanket directly over the
existing labels.
• do inspect the insulation blanket frequently to make certain it
does not sag, thereby obstructing combustion air flow.
hard water
Where hard water conditions exist, water softening or the
threshold type of water treatment is recommended. This will
protect the dishwashers, coffee urns, water heaters, water piping
and other equipment.
See the maintenance Section in this manual for sediment and
lime scale removal procedures.
circulation pumps
A circulating pump is used when a system requires a circulating
loop or there is a storage tank used in conjunction with the water
heater. See Water Piping Diagrams in this manual for installation
location of circulating pumps.
figure 6
installation on comBustiBle flooring
The BTr 500 is approved for installations on combustible
flooring when installed with nSF Leg kit number 9003425205
figure 7
1. Unit needs to be lifted in a way not to damage unit or laid
on it’s side to access the bottom of the legs.
2. Slide leg extension under leg and the bolt up through the
bottom hole located in the bottom of the leg.
3. Once in place, screw nut down and secure.
4. Front of leg should line up with front of leg extension as
shown in Figure 7 to make sure weight of unit is distributed
through the leg extension.