Maytag SERIES NINE HE2940L - Manual (Page 12)

Instructions for Installation (cont'd)
Temperature-Pressure Relief Valve
AWARNING
At the time of manufacture this water heater was provid­
ed with a combination temperature-pressures relief valve
certified by a nationally recognized testing laboratory that
maintains periodic inspection of production of listed
equipment or materials, as meeting the requirements for
Relief 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 (ess 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 recog­
nized 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 lbs./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 jurisdictional authority, while mandating the
use of a temperature-pressure relief valve complying with
ANSI Z21.22 and ASME, may require a valve model differ­
ent from the one furnished with the water heater.
Compliance with such local requirements must be satisfied
by the installer or end user of the water heater with a
locally prescribed temperature-pressure relief valve
installed in the designated opening in the water heater in
place of the factory furnishea 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 into the fitting 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
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, 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 injury, hazard to life, 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 oe 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 material 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.
AWARNING
The temperature-pressure relief valve must be manu­
ally 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 dis­
charged 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 com­
pletely reset and continues to release water, immedi­
ately close the cold water inlet to the water heater,
follow the draining instructions, and replace the
temperature-pressure relief valve with a new one.
HOT
Ж —I
CONDUIT
COLD
TEMPERATURE-
PRESSURE
RELIEF VALVE
DISCHARGE PIPE
(Do not cap or plug)
AIR GAP
WARNING “RELIEF VALVE OPENING”
Thl$ wat«r heater is provided with a eombjnation Temperature-Pressure Retel Valve UsMd as <»mcilyjiig mi №
the standard for Rete! Vafues and Automatic Gas Shutofl Oevices tor Hot Water Supply Systems, ANS 21.22
and the code requiemente o( ASME.
Vour localJ^ktlonal authority, whjle mandatirig the use of a Temperature-Pressure Relief Valve corrplying
wMh AN$ z21.22 and ASME, may require a valve model different from the one furnished with the water heater.
Compitenoe H# such local requrements rttUiSi be satrs^ by the hstaUar ix erid user 1 ^ (he wafer deafer
a lotially prescribed Temperature^Preseure Relief Valve li^stalled in the designated opening in the water
heater.
T&P RELIEF
VALVE PROBE
MUST EJCTEND
INTO TANK
TEMPERATURE-
PRESSURE
RELIEF VALVE
{1V."xV/]
BRASS
NIPPLE
TSP
SHANK
LENGTH
• ff a short shank (fesa №an 2”) tamperaiture-pres$i.)re refief vafve Is to be mstafled
(as shown), a nipple and coupling must be used.
• If a long shank (2" or longer) is to be installed, do not use the nlpfrie and coupling.
'Install Temperature-Pressure protective equipment required by local codes, but not less than a combina­
tion Temperature-Pressure Relief Valve cetlifled as meeting the requirements for Relief Valves and
Automatic Gas Shutoff Devices lor Hot-Water Supply Systems, ANS Z21.22 by a nationally recognized test­
ing laborafory (haf maintains periodic Inspection of production of fisted equipment or materials. The valve
must be oriented, provided erith tubing, or otherwise Installed so that ttecharge can exit only within 6 inches
above, or at any distance below the structural floor, and cannot contact any live electrical part'
For safe operation of the water heater, the Relief \feilve must not be remove or plugged.
See manual heading - 'Tampereture'Prassure Relief Valve" for installation and mainlenarKe of Relief
Valve, discharge pipe and other safely precautions.
12