A.O. Smith ELJH-30 User manual

Storage Water Heater
ELJH-30
ELJH-40
ELJH-50
ELJH-80
ELJH-100

1
About A.O. Smith
In 1936, A. O. Smith developed and patented a technology to glass-line water heaters. Over the years, A.
O. Smith has gained the respect and support of homeowners, contractors, architects and specifying
engineers in over 60 countries by providing innovative energy efficient products designed for years of
trouble-free service.
Today A. O. Smith Water Products Company, the largest water heater manufacturer in the world, is a
global leader in innovative technology and energy efficient solutions.
What’s in the box?

2
Contents
Specifications ....................................................................................3
Component Description .....................................................................4
Key Features .....................................................................................5
Glass Coated Element
Blue Diamond Glass Lining
Anode Protection
Safety Valve
Thermal Cut Out
Installation ..........................................................................................6
Mounting
Mounting procedures and precautions
Mounting guidelines
Plumbing connection
Water inlet and outlet connection
Power connection
Wiring diagram of water heater
Water filling
Directions of use ..............................................................................10
Temperature setting operation
Maintenance Instructions .................................................................10
Maintenance
Troubleshooting ..............................................................................12

3
Specifications
Type
ELJH-Horizontal Wall Mounted
Rated volume (L)
30
40
50
60
80
Power (W)
2000
2000
2000
2000
2000
Voltage/frequency (V/Hz)
220/50
220/50
220/50
220/50
220/50
Temperature range (°C)
35-75±5
35-75±5
35-75±5
35-75±5
35-75±5
Rated water pressure (MPa)
0.8
0.8
0.8
0.8
0.8
Minimum inlet water pressure
(MPa)
2.0
2.0
2.0
2.0
2.0
Maximum inlet water pressure
(MPa)
3.0
3.0
3.0
3.0
3.0
Inlet/outlet connection (inches)
½
½
½
½
½
Waterproof grade
IPX1
IPX1
IPX1
IPX1
IPX1
Weight (kg)
17
19
21
24
31
Overall dimensions (mm)
Ø360x605
Ø360x710
Ø360x830
Ø360x962
Ø463x860
A. O. Smith reserves the right to make product changes or improvements at any time without notice.

4
Component Description
Part Description
1. Temperature indicator
7. Multi-function safety valve
2. Heating element
8. Stopcock (not included with water heater)
3. Anode
9. Pilot light
4. Cold water inlet pipe with diffuser
10. Inlet
5. Hot water outlet pipe
11. Outlet
6. Thermostat
12. Thermal cut out