State Water Heaters SBL81120NE, 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 front of the combustion
chamber flange plate to insure that the spark igniter, flame
sensor, and sightglass remain uncovered.
• do not cover the gas valve or the Temperature-Pressure
relief Valve.
• do not apply insulation within 5” (13 cm) of the blower, to
insure the safe operation of the blower assembly.
• do not
apply insulation on the control box that encloses
the thermostat, ignition control, and variable frequency drive.
• 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.
See the Circulation Pump Wiring Diagrams (Figure 9.) in this
manual for electrical hookup information. Install in accordance
with the current edition of the National electrical Code, NFPA 70
or the Canadian electrical Code, CSA C22.1.
All-bronze or stainless steel circulating pumps are recommended
for use with commercial water heaters.
figure 7.
nsf leg kit
figure 8.
The NSF leg Kit (part number 9008214005) is needed only for
applications that must conform to NSF/ANSI Standard 5. The
installed height of the water heater will increase by 3" (7.6 cm) when
the leg kit is installed. Follow these steps to install the leg Kit. Use
caution to prevent damage to the unit when installing the leg Kit
1. lift, tilt or lay the unit on its side to access the bottom of the legs.
2. Position the extension under leg aligning the holes in the leg
extension with the holes in the leg. Assemble the bolt, bevel
washers, flat washers, and nut through the aligned holes in
the leg and leg extension as shown in Figure 8.
3. Once in place, tighten the nut and bolt assembly. Torque to 70
ft.lbs (9.67 kgf-m).
4. Insure that all four nut and bolt assemblies are torqued to the
specified value before placing the unit on the floor.