A.O. Smith PROLINE ELECTRIC 730098, Maintenance & Troubleshooting Manual

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If your property has a backflow or a check valve on the
plumbing system, then a thermal expansion tank should
be installed near the water heater to protect from
damage caused by thermal expansion
(See HD Supply Part # 640585 or 640590).
5
Set new water heater in place and connect to water
supply. Using push-to-connect water heater connectors
will save installation time (See HD Supply Part # 549860
or 400531). Connect T&P valve according to local code
requirements.
6
Turn on main water supply or open ball valve on cold
water inlet and fill tank.
7
Check flow rate from open faucet (hot water side) until
water runs full flow for three minutes to ensure the tank
is completely full. Tank must be completely full before
lighting pilot.
8
Check all water connections for leaks.
Most leaks are caused by poor connections
and not a tank leak.
9
Connect gas supply (See HD Supply Part # 216300
or 216800) and check for gas leaks using gas leak
detector fluid (See HD Supply Part # 109122).
10
Connect vent pipe to water heater draft hood. Gas water
heaters must have access to adequate combustion air
and be properly vented.
11
Light pilot using lighting instructions and safety
information on water heater.
12
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