A.O. Smith Promax Tall ECT-80 Instruction Manual | Page 9
9
TEMPERATURE- PRESSURE RELIEF VALVE
This heater is provided with a properly certified combination
temperature - pressure 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 valve must meet the requirements of local codes,
but not less than a combination temperature and pressure relief
valve certified as indicated in the above paragraph.
The 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 input rate as shown on the model rating plate.
For safe operation of the water heater, the 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 relief valve. Position
the valve downward and provide tubing so that any discharge will
exit only within 6 inches (153 mm) above an adequate drain, or
external to the building or structure. 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 relief valve
and the tank. Do not connect tubing directly to discharge drain
unless a 6 inch air gap is provided. The relief valve must be allowed
to discharge water in sufficient quantities, should circumstances
demand, to prevent bodily injury, hazard to life, or property damage.
If the discharge pipe is not connected to a drain or other suitable
means, the water flow may cause property damage.
The Discharge Pipe:
• 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 be of material listed for hot water distribution.
• Shall be installed so as to allow complete drainage of both the
temperature-pressure relief valve, and the discharge pipe.
• Shall terminate at an adequate drain.
• Shall not have any shut-off valve between the relief valve and
tank nor in the discharge pipe.
The temperature-pressure relief valve must be manually operated
at least once a year. Caution should be taken to ensure that (1) no
one is in front of or around the outlet of the temperature-pressure
relief valve discharge line, and (2) the water manually discharged
will not cause any bodily injury or property damage because the
water may be extremely hot.
FIGURE 4.
Related Manuals for A.O. Smith Promax Tall ECT-80
-
A.O. Smith Water Heater BTX-100 Specification Sheet
2 pages
-
A.O. Smith Water Heater Cyclone BFC - 60 Installation Manual
98 pages
-
A.O. Smith Water Heater EES - 52 Specification Sheet
4 pages
-
A.O. Smith Water Heater ProMax Power-Vent GPVH-50 Instruction Manual
32 pages
-
A.O. Smith Water Heater Promax Short ECS-40 Instruction Manual
28 pages
-
A.O. Smith Water Heater Promax Tall ECT-52 Instruction Manual
28 pages
-
A.O. Smith Water Heater Promax Tall ECT-55 Instruction Manual
28 pages
-
A.O. Smith Water Heater TJV-120M Specification Sheet
2 pages
-
Electrolux Water Heater EWH-SL/SLN User's Manual
4 pages
-
Whirlpool Water Heater E1F50RD045V User's Manual
16 pages
-
Whirlpool Water Heater Energy Smart EE2H40RD045V User's Manual
15 pages
-
Rheem Water Heater Ruud G100-200(A) User's Manual
2 pages
-
Redring Water Heater 1070810E User's Manual
8 pages
-
GSW Water Heater SUPERFLUE POWER VENTED GAS FIRED WATER HEATER User's Manual
18 pages
-
Rheem Water Heater Professional Prestige Series: Hybrid Heat Pump Use & Care Manual
24 pages
-
Rheem Water Heater Tankless Electric RTE 13 Use & Care Manual
16 pages
-
A.O. Smith Water Heater GCVL-40 Technical Documents
32 pages
-
A.O. Smith Water Heater ATI-540H-N Technical Documents
64 pages
-
Rinnai Water Heater RUR98i (REU-KBP3237FFUD-US) Specification Sheet
2 pages
-
Rinnai Water Heater RUR98i (REU-KBP3237FFUD-US) Operation and Installation Manual
61 pages
-
Rinnai Water Heater RUC80i (REU-KBD2530FFUD) Operation and Installation Manual
140 pages
-
Rinnai Water Heater RUC98i (REU-KBD3237FFUD) Operation and Installation Manual
140 pages
-
Rinnai Water Heater RUC98i (REU-KBD3237FFUD) Specification Sheet
2 pages
-
Rinnai Water Heater RL94i (REU-VC2837FFUD-US) Specification Sheet
2 pages