Bradford White D4403S series, Manual

Page: 11 / 36

11
Venting
WARNING
The venting system must be installed properly following all local codes or in
the absence of local codes, the National Fuel Gas Code, ANSI Z223.1-Latest
Edition, or in Canada, The Natural Gas and Propane Installation Code, B149-
Latest Edition. Failure to properly install the venting system could result in
property damage, personal injury, or death.
This water heater has been shipped with a draft hood, also called a draft
diverter, for which it was designed. The water heater must be operated with
this draft hood properly installed on the damper bracket. If ever removed, the
draft hood must be replaced in the same position and properly secured.
WARNING
Carefully inspect the venting system of a replacement water heater installation
before connecting to the venting system. All joints in the vent connector must
be securely fastened with screws and fit tightly together. Inspect the venting
system for signs of deterioration (rust and perforation) and replace any
sections that are not in good condition.
The chimney must be lined and in good condition. Check to make sure the
venting system is properly sized for the water heater. If the venting system
was previously sized for another gas appliance that has been removed, the
venting system may now be too large. Refer to the National Fuel Gas Code
ANSI Z223.1-Latest Edition, or in Canada, the Natural Gas and Propane
Installation Code, B149-Latest Edition, for the correct sizing of venting
systems and common venting with another gas appliance.
Do not vent this water heater into the venting system of another gas appliance
designed to vent under positive pressure.
The water heater should be installed as close as practical to the venting
system to minimize the vent connector length required. Refer to local codes
for the distance limitations on vent connector lengths.
At the completion of the water heater installation, the burner and venting
system must be checked for proper operation with all other commonly vented
appliances in operation. Check for spillage of flue products around the
outside relief opening of the draft hood after several minutes of operation.
The flame from a match should be drawn into the draft hood. Do not use the
water heater or connected equipment if spillage is detected until the problem
is corrected. Refer to the latest edition of the National Fuel Gas Code, or in
Canada, the Natural Gas and Propane Installation Code for complete details
on the “Procedure to Be Followed to Place Equipment in Operation.”