Installation Guide
Residen al Standard Gas Water Heater Use and Care Guide • 21
INSTALLATION
Residen al Standard Gas Water Heater Use and Care Guide • 21
INSTALLATION
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 
fi   ng marked “H” (HOT).
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
Adjust (or install) the home’s 
Pressure Reducing Valve to 
50-60 psi and install a Thermal 
Expansion Tank. 
Figure 28 - A Pressure Reducing Valve is required 
if your home’s water pressure is above 80 psi.
Figure 29 - The Thermal Expansion Tank should 
be pressurized with air, using a hand pump, to 
match the home’s incoming water pressure.
Step 9:
Verify Connec ons and 
Completely Fill 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 debris in plumbing 
system to be washed out of the pipes.
2
Turn the cold water supply 
back on and fi ll the tank.
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 minutes. 
5
Close the hot water faucet 
and replace the aerator. 
6
Check inlet and outlet connec-
 ons and water pipes for leaks. 
Dry pipes connec ons 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.
Step 10:
Install Dra  Hood
1
Install the new dra  hood by 
aligning the legs and inser ng 
them into the slots provided on 
top of the water heater. Do not reuse the 
dra  hood from the old water heater, 
but rather use the new one that came 
with your new water heater.
2
Secure the dra  hood using 
the four screws provided. 
A  ach the home’s exis ng vent 
pipe to the dra  hood outlet using an 
approved vent adapter (not supplied).
Figure 30 - Install the new draft hood and secure 
with screws.
3
Secure the vent adapter to the 
dra  hood with sheet metal 
screws. Read the Ven ng 
sec on on page 11. Make sure your 
home’s ven ng system complies with 
the instruc ons in this manual and is in 
good condi on.










