Polaris BSS, Инструкция по эксплуатации, Страница: 20 / 63

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Figure 9 also shows the typical attachment of the water piping
to the water heater. The water heater is equipped with 1” NPT
connections for all models.
NOTE: If using copper tubing, solder tubing to an adapter before
attaching the adapter to the water heater connections. Do not
solder the water lines directly to the water heater connections. It
will damage the tank, T & P Valve and Pipe Insulation (if supplied ).
Fit pipe insulation over the incoming cold water line and the hot
water line. Make sure that the insulation is against the top cover
of the heater. Fit T & P valve insulation over valve. Make sure that
the insulation does not interfere with the lever of the T & P valve.
Secure all insulation using tape.
TEMPERATURE-PRESSURE RELIEF VALVE
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
This water heater is provided with a properly rated/sized and
certified combination Temperature-Pressure Relief Valve (T&P
relief valve) by the manufacturer. The valve is certified by a
nationally recognized testing laboratory that maintains periodic
inspection of production of listed equipment of materials as
meeting the requirements for Relief Valves for Hot Water Supply
Systems, ANSI Z21.22 • CSA 4.4, and the code requirements
of ASME.
If replaced, the new T&P valve must meet the requirements
of local codes, but not less than a combination Temperature-
Pressure Relief Valve rated/sized and certified as indicated in
the previous paragraph. The new valve must be marked with a
maximum set pressure not to exceed the marked hydrostatic
working pressure of the water heater (150 psi = 1,035 kPa) and
a discharge capacity not less than the water heater Btu/hr or
kW input rate as shown on the water heater’s model rating plate.
NOTE: In addition to the factory installed Temperature-Pressure
Relief Valve on the water heater, each remote storage tank
that may be installed and piped to a water heating appliance
must also have its own properly sized, rated and approved
Temperature-Pressure Relief Valve installed.
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
For safe operation of the water heater, the Temperature-Pressure
Relief Valve must not be removed from its designated opening
nor plugged. The Temperature-Pressure Relief Valve must be
installed directly into the fitting of the water heater designed for the
Temperature-Pressure Relief Valve. Install discharge piping so that
any discharge will exit the pipe within 6 inches (15.2 cm) above an
adequate floor drain, or external to the building. In cold climates it is
recommended that it be terminated at an adequate drain inside the
building. Be certain that no contact is made with any live electrical
part. The discharge opening must not be blocked or reduced in size
under any circumstances. Excessive length, over 30 feet (9.14 m),
or use of more than four elbows can cause restriction and reduce
the discharge capacity of the valve.
No valve or other obstruction is to be placed between the
Temperature-Pressure Relief Valve and the tank. Do not connect
discharge piping directly to the drain unless a 6” (15.2 cm) air gap
is provided. To prevent bodily injury, hazard to life, or property
damage, the temperature-pressure relief valve must be allowed
to discharge water in adequate quantities should circumstances
demand. If the discharge pipe is not connected to a drain or other
suitable means, the water flow may cause property damage.
Water Damage Hazard
Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
•
CAUTION
T&P VALVE DISCHARGE PIPE REQUIREMENTS:
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
• Shall not be plugged or blocked.
• Shall not be exposed to freezing temperatures.