User guide
Plumbing connection
Connect the   valve provided with this unit to the inlet of the   (inlet pipe has a 
blue cap). The arrow points to the direction of water flow (to the water heater). The relief valve 
must be connected to the discharge pipe. The hot water pipe is connected to the water outlet 
(outlet pipe has a red cap). If the water pressure of the inlet pipe approaches to or exceeds the 
relief limit (0.8 MPa) of the multi-functional relief valve, please install a reducing valve on the 
water inlet pipe away from the water heater. Refer to Fig. 6 for pipe connection. Nylon pipes 
should be used for connection between the tapping pipe in users house and the water heater. 
relief water heater
Caution:  Apply proper sealing to the pipe joints to prevent leakage. At the same time, 
the relief valve may not be tightened excessively to avoid damage.
Fig. 6 Water inlet and outlet connection diagram 
If you require a wired remote control box to be installed, please c
Care No. 1.800.103.2468
ontact A. O. Smith Customer 
Connection of wired remote control box
The power cord and plug has been provided for the  . Users only needs to insert the 
plug into the corresponding electrical socket.
water heater
Power connection
Caution: Ensure that the socket is grounded reliably. Use an independent high-quality 
socket, its rated current should not be less than 16 A and ensure reliable contact 
with the plug.
After all  pipes are connected, first open the discharge valve of the   then the 
feed valve. Then fill the water heater with water, exhaust the air till water stream flows 
uniformly out of the hot water outlet. This indicates that the water heater has been filled up. 
Please close the hot water discharge valve and check all connections for any leakage. If leakage 
occurs, empty the inner tank, repair the leaked connection and then refill the water heater with 
water. For your convenience, please don’t close the feeding valve while filling the water.
the  water heater,
Water filling
8
Quick 
Standard
Heat 
Modes
MAX
kWh
Hot Water
Quantity 
Override 
Energy
meter 
Timer3
0
C
:
88 88
Timer 2Timer 1Timer 3
MAX
Low
Timer ON
Timer OFF
0
C
Clock/
Timers 
Hot Water 
(outlet)
Cold Water (inlet)
Handle
Discharge Pipe Joint
Relief Valve










