Installation Guide
Residen al Electric Water Heater Use and Care Guide • 13
NOTICE: Most water heater models 
contain energy saving heat traps in the 
inlet and outlet connec ons. Do not 
remove the heat traps. 
3
Connect the hot water supply 
using 3/4 inch NPT to the hot 
water outlet. Follow the same 
connec on guidelines as for the cold 
water supply.
4
Install insula on (or heat tape) 
on the water pipes especially if 
the indoor installa on area is 
subject to freezing temperatures. 
Insula ng the hot water pipes can 
increase energy effi ciency. 
5
Double check to make sure the 
hot and cold water pipes are 
connected to the correct hot 
and cold water fi   ngs on the water 
heater.
6
If needed, install (or adjust) the 
home’s Pressure Reducing 
Valve to 50-60 psi and install a 
Thermal Expansion Tank. 
Figure 15 - A Pressure Reducing Valve is 
required if your home’s water pressure is 
above 80 psi. 
Figure 16 - The Thermal Expansion Tank 
should be pressurized with air, to match the 
home’s incoming water pressure.
Step 8:
Verify connec ons and 
completely fi ll tank
To remove air from the tank and allow 
the tank to fi ll completely with water, 
follow these steps: 
1
Remove the aerator at the 
nearest hot water faucet. This 
allows any debris in the tank or 
plumbing system to be washed out.
2
Turn the cold water supply 
back on.
Full-fl ow ball valve
Figure 17 - Fully open the cold water supply 
valve.
3
Open a hot water faucet and 
allow the water to run un l it 
fl ows with a full stream. 
4
Let the water run full stream 
for three full minutes. 
5
Close the hot water faucet and 
replace the aerator. 
6
Check inlet and outlet connec-
 ons and water pipes for leaks. 
Dry all pipes so that any drips 
or leaks will be apparent. Repair any 
leaks. Almost all leaks occur at connec-
 ons and are not a tank leak. 
INSTALLATION










