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"emperature-PressureRelief Valve
WARNING
At the time of manufacture this water beater was provided
with a combination temperature-pressure relief valve certi-
fied by a nationally recognlzedtesting laboratory that
maintains periodic inspection ofproductl-on of listed equip-
ment or materials, as meeting the requirements for Rell;ef
Valves and Automatic Gas Shutoff Devices for Hot Water
Supply Systems, and the latest edition of ANSI Z21.22 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 meeting the requirements for Relief Valves and
Automatic Gas Shutoff Devices for Hot Water Supply
Systems, ANSI Z21.22 by a nationally recognized testing
laboratory that maintains periodic inspection of production
of listed equipment or materials.
The valve must be marked with a maximum set pressure
not to exceed the marked hydrostatic working pressure of
the water heater (150 Ibs./sq. in.) and a discharge capacity
not less than the water heater input rate as shown on the
model rating plate. (Electric heaters - watts divided by
1000 x 3415 equal BTU/Hr. rate.) ..
Your local iurisd_ctlona! authority, while mandating the use
of a temperature-pressure relief valve complying with ANSi
Z21.22 and ASME, may require avalve model different
from the one furnished wlth the water heater.
Compliance with such local requirements must be satisfied
y the installer or end user of the water heater with a local-
_, prescribed temperature-pressure relief valve installed in
the designated opening in the water heater in place of the
factory furnished valve.
For safe operation of the water heater, the relief valve must
not be removed from it's designated opening or plugged.
The temperature-pressure relief valve must be installed
directly _'nto the f[ttlng of the water heater designated for
the relief valve. Position the valve downward and provide
tubing so that any. discharge will exit only within 6 inches
above, or at any distance below the structural floor. Be cer-
tain 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, 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 air gap is provided. To prevent
bodily m_niury,hazard to llfe, or property damage, the relief
valve must be allowed to discharge water in 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.
The Discharge Pipe:
--Must not be smaller in size than the outlet pipe size of
the valve, or have any reducing couplings or other
restrictions.
--Must not be plugged or blocked.
--Must be of materl'al listed for hot water distribution.
--Must be installed so as to allow complete drainage of
both the temperature-pressure relief valve, and the dis-
charge pipe.
--Must terminate at an adequate drain.
--Must not have any valve between the relief valve and tank.
WARNING
The temperature-pressure relief valve must be manually
operated at least once ayear. 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.
If after manually operating the valve, it fails to completely
reset and continues to release water, immediately close the
cold water inlet to the water heater, follow the draining
instructions, and replace the temperature-pressure relie_
valve with a new one.
HOT
-,fp----- t
SHUT OFF
VALVE
COLD
TEMPERATURE-
PRESSURE
RELIEF VALVE
(Do not cap
or plug)
11
FLOOR DRAIN ]
RELIEF VALVE OPENING
AT THE TIME OF MANUFACTURE,THIS WATER HEATERWAS PROVIDED
WITH A COMBINATIONTEMPERATURE-PRESSURERELIEF VALVELISTED
AS COMPLYINGWITH THE STANDARDFOR RELIEF VALVESAND AUTO-
MATICGASSHUTOFFDEVICESFORHOTWATERSUPPLYSYSTEMS,ANSI
Z21.22. FOR SAFE OPERATION OF THE WATER HEATER, THE RELIEF
VALVE MUST NOT BE REMOVED FROM ITS DESIGNATED POINT OF
INSTALLATIONOR PLUGGED.
YOUR LOCALJURISDICTfONALAUTHORITy,WHILEMANDATINGTHE USE
OF A TEMPERATURE-PRESSURERELIEF VALVECOMPLYINGWiTH ANSI
Z21.22AND ASME,MAYREQUIREA VALVEMODELDIFFERENTFROMTHE
ONEFURNISHEDWITHTHEWATERHEATER.
COMPLIANCEWITH SUCH LOCAL REQUIREMENTSMUSTBE SATISFIED
BY THE INSTALLER OR END USER OF THE WATER HEATER WITH A
LOCALLY PRESCRIBED TEMPERATURE-PRESSURE RELIEF VALVE
INSTALLED_NTHEDESIGNATEDOPENINGtN THEWATERHEATER.
SEE MANUAL HEADING--°TEMPERATURE-PRESSURE RELIEF VALVES"
FOR INSTALLATIONAND MAINTENANCEOF RELIEF VALVE,DISCHARGE
LINEAND OTHER SAFETYPRECAUTIONS.
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