Venting; Water Connections - Bradford White 30S Installation & Operating Instruction Manual

Venting

The connection from the water heater vent to the stack must be made as
direct as possible and of the same diameter as the vent outlet. The
recommended slope of any horizontal breaching is at least 1/2" rise per
linear foot. A barometrically operated draft regulator (barometric damper)
shall be installed in the vent connector at a location just above the water
heater.
Caution: The stack must extend at least three feet above the highest point of
the roof to insure proper venting. The stack should be provided with a weather
cap of approved design.
Note: Provisions shall be made to prevent contact of the vent pipe with
combustible materials in accordance with all codes and regulations.
A separate vent for each appliance is strongly recommended. A separate
vent is required for installation and application of multiple power vent(s). If
combined venting of multiple appliances is necessary or if an unusual
situation arises consult the National Fire Protection Standard For Oil Burning
Equipment NFPA NO.31 (latest edition), for sizing and installation information.

Water Connections

NOTE: Before proceeding with the installation, close the main water supply
valve. After shutting off the main water supply, open and close the appropriate
faucets and valves to prevent any water from leaking out of the pipes while
making the water connections to the water heater. The cold water inlet and
hot water outlet are identified on the top of the water heater. The fittings at
the cold water inlet and hot water outlet are dielectric fittings with a 3/4 NPT
male thread. Make the proper plumbing connections between the water
heater and the plumbing system of the house. A shut-off valve should be
installed in the cold water supply line.
If sweat fittings are to be used, Do Not apply heat to the nipples on top of the
water heater. Sweat the tubing to the adapter before fitting the adapter to
water connections. It is imperative that no heat be applied to nipples
containing a plastic liner. Heat traps may have been provided in the inlet and
outlet nipples. Although they may appear to be plastic plugs, Do Not attempt
to remove the plastic insert.
If this water heater is installed in a closed water system, such as one having
a back-flow preventer in the cold water supply, provisions shall be made to
control thermal expansion. Your water supplier or local plumbing inspector
should be contacted on how to control this situation.
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