n
n
Butyl diaphragm, for permanent separation
of air and water, with no waterlogging
Expansion Tank Sizing Chart For Residential Water Heaters
WHY EXPANSION TANKS ARE IMPORTANT
Water Heater Capacity in Gallons
Inlet Water
Pressure*
Thermal expansion occurs when water is heated during non-use
periods. The installation of a Pressure Reducing Valve (PRV), Check
Valve or Back Flow Preventer ˝closes˝ the water system, leaving
water with no room for expansion. National Standard Plumbing
code: 10.5.7 requires backflow prevention, to prevent backflow into
the water main.
30
40
50
66
82
100
3
In-line design, with ⁄4˝ NPTM Connection:
40 PSI
50 PSI
60 PSI
70 PSI
80 PSI
ETC-2X
ETC-2X
ETC-2X
ETC-2X
ETC-2X
ETC-2X
ETC-2X
ETC-2X
ETC-2X
ETC-5X
ETC-2X
ETC-2X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
ETC-5X
installs in cold water line of water heater
n
n
Maximum Working Pressure 150 PSI
Maximum Temperature: 140°F Residential
180°F Commercial
*Highest recorded inlet water pressure in a 24-hour period of
regulated water pressure.
Thermal expansion in a closed plumbing system can be damaging,
dangerous and costly. Its effects include damage to water heater
connections, gas water heater flue tubes, pumps serving washers and
dishwashers, leaking faucets, ˝weeping˝ of water through the water
heater T&P Safety Valve, and noisy water hammer in the pipes.
n
n
IAPMO Approved
EXPANSION &
PUMP TANKS
5-Year Limited Warranty
A
A properly sized Expansion Tank eliminates these problems, by giving
water a place to go when thermal expansion occurs. When a water
heating cycle ends, or when any fixture is opened
within the system, the impact of thermal
TYPICAL EXPANSION TANK
INSTALLATION
expansion is reduced, and water drains out of the
expansion tank back into the system.
B
RELIANCE EXPANSION
TANK FEATURES
n
Protection against
dangerous thermal
expansion in closed
systems
n
Steel shell with
polyurethane coating
for maximum corrosion
resistance
Reliance Water Heaters
500 Tennessee Waltz Parkway
Ashland City, TN 37015
Water Heater Expansion Tanks
Maximum Acceptable
Volume (Gallons)
Dimensions
in Inches
Shipping
Weight
(Lbs.)
Gallon
Capacity
Model Number
40 PSI
60 PSI
A
B
n
Drawn-steel tank with
2-coat bonded polymer
inner lining
Expansion tanks are pre-charged with a 40 PSI air charge. If the
inlet water pressure is higher than 40 PSI,the expansion tank’s air
pressure must be adjusted to match that pressure but must not be
higher than 80 PSI.
ETC-2X
ETC-5X
ETC-10X
1.96
4.55
9.21
1.27
3.05
6.55
1.03
2.19
5.25
83⁄8
113⁄8
153⁄8
121⁄2
143⁄4
153⁄4
5
8
20
Reliance Hotline: 1-800-365-4054
All models: 150 PSIG Maximum Working Pressure
© 2007
November 2007R
RPMCP00107
Download from Www.Somanuals.com. All Manuals Search And Download.
|