A.O. Smith ENJB-40W, ENJ-40W, EMT-2.5, EMT-4, EMT-6 User Manual
PROLINE® SPECIALTY ELECTRIC
COMMERCIAL-GRADE RESIDENTIAL
COMMERCIAL-GRADE
RESIDENTIAL ELECTRIC WATER HEATERS
TABLE TOP
• Features a convenient flat porcelain
surface at 36” height, providing extra
“counter space” wherever installed. All
plumbing and electrical connections are
made through the back of the water
heater. This heater is equipped with a PEX
cross-linked polymer dip tube.
POINT-OF-USE
• Designed for low-demand, such as office
lavatories or buildings with remote
restrooms.
COMPACT
• Side-mounted plumbing and electrical
connections (optional top-mounted
water connections for field conversion).
Designed for installation under a counter,
in a crawl space or in other tight spaces.
BLUE DIAMOND® GLASS COATING
• Provides superior corrosion resistance
compared to industry standard glass
lining.
ENHANCED-FLOW BRASS DRAIN VALVE
• Our standard residential water heaters
have a solid brass, tamper resistant,
enhanced-flow, ball type, drain valve.
• Uses a standard female hose fitting that
allows for fast and easy draining during
maintenance.
• Designed for easy operation, this valve
includes an integral screwdriver slot that
features a 1/4 turn (open/close) radius,
which not only permits full straightthrough water flow but also a quick and
positive shut off.
CODE COMPLIANCE
• Meets UBC, CEC and HUD National
Codes.
• Meets the thermal efficiency and
standby loss requirements of the U.S.
Department of Energy and current
edition of ASHRAE/IES 90.1.
• Complies with the Federal Energy
Conservation Standards effective April
16, 2015, in accordance with the Energy
Policy and Conservation Act (EPCA), as
amended.
APPROVED FOR MANUFACTURED
HOUSING
• All residential electric water heaters
are compliant with HUD standards for
mobile homes/manufactured housing.
CERTIFIED TO UL 174 FOR
HOUSEHOLD ELECTRIC WATER
HEATERS
CSA CERTIFIED AND ASME RATED T&P
RELIEF VALVE
DESIGN-LISTED BY UNDERWRITERS
LABORATORIES
• Certified at 300 psi test pressure and
150 psi working pressure.
• Listed according to UL 174 standards
governing storage tank-type electric
water heaters.
6-YEAR LIMITED TANK AND PARTS
WARRANTY
• For complete information consult the
written warranty or go to hotwater.com.
© January 2018 A. O. Smith Corporation. All Rights Reserved
www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015
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AOSRE50603
COMMERCIAL-GRADE
C
RESIDENTIAL ELECTRIC WATER HEATERS
Model
Number
Compact Models 120V 240V
EJC-6 6 6 N/A N/A 1650 3000 8 15-1/4 10-3/4 14-1/4 35
EJC-10 10 9 N/A N/A 1650 6000 8 18-1/4 12-1/4 16 41
EJCS-20 19 17 N/A N/A 2500 6000 11 24-3/4 18-5/8 18 68
EJCT-20 19.9 18 N/A N/A 2500 6000 11 31-5/8 25-3/4 16 68
Lowboy Side-Connect Model 240V
ENJB-30* 28 26 47 0.90 4500 6000 21 30 21-3/4 22 101
ENJ-30 28 26 43 0.91 4500 6000 21 31-1/4 21-3/4 24 115
ENJB-40* 38 35 57 0.94 4500 6000 21 31-3/4 24 24 118
ENJB-40W* 38 35 38 0.91 - 4000 18 31-3/4 24 24 118
ENJ-40 38 35 54 0.93 4500 6000 21 33-1/2 24 26 118
ENJ-40W 38 35 38 0.91 - 4000 18 33-1/2 24 26 118
Table Top Model 240V
ENTT-38 38 35 55 0.90 4500 5500 21 36 24 25 150
Point-Of-Use-Models 120V
EMT-2.5 2.5 2.6 N/A N/A 1440 @ 120V 7 14-1/2 10-3/8 11-3/4 17
EMT-4 4 3.8 N/A N/A 1440 @ 120V 7 19-1/4 10-3/8 11-3/4 20
EMT-6 6 5.9 N/A N/A 1440 @ 120V 7 20 12-1/2 13-3/4 24
*Models ship with a supplied insulation blanket.
When ordering models ENJ-40 or ENJB-40 the model number will change for wattages of 4kW to 1kW. The new model number will include a “W” suffix (example: ENJB-40W)
Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.
Top mounted T&P adds approximately 3” to overall installation height.
Water connection is 3/4”on Table Top and Compact models and 1/2” NPT on Point-Of-Use Models
Nominal
Capacity
Rated
Storage
Volume
First Hour
Rating
(Gallons)
UEF
Element Wattage
Standard Maximum A B C
Recovery @
90 °F Rise
Gallons
Per Hour
Dimensions in Inches
Shipping
Weight (lbs)
Approx.
Compact Models
EJC-10EJC-6
I INLET D DRAIN I* PLUGGED INLET
O OUTLET T T&P O* PLUGGED OUTLET
EJCS-20
Table Top Model
EJCT-20
A ANODE
Lowboy
ENJ-30, ENJB-30
ENJ-40, ENJB-40
Point-Of-Use
A
B
For Technical Information, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
© January 2018 A. O. Smith Corporation. All Rights Reserved
www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015
Page 2 of 3
AOSRE50603
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