Installation / Operation Instruction Manual

9
Venting continued-
1
In accordance with the current CAN/CGA-B149 Installation Codes.
2
In accordance with the current ANSI Z223.1-(Latest edition)/NFPA 54 National Fuel Gas Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two
single-family dwellings and serves both dwellings.
‡ Permitted only if a veranda, porch, deck or balcony is fully open on a minimum of two sides
beneath the floor.
*a) A minimum clearance value determined by testing in accordance with section 5.21.1 of ANSI
Z21.10.1, latest edition.
*b) “Clearance in accordance with local installation codes and the requirements of the gas supplier”.
The vent system must terminate so that proper clearances are maintained as cited in local codes or
the latest edition of the National Fuel Gas Code, ANSI Z223.1.73.4e and 7.8a, b as follows:
1. Do not terminate near soffit vents or crawl space or other area where condensate or vapor
could create a nuisance or hazard or cause property damage.
2. Do not terminate the exhaust vent terminal where condensate or vapor could cause damage
or could be detrimental to the operation of regulators, relief valves, or other equipment.
3. Do not terminate the exhaust vent terminal over public area or walkways where condensate or
vapor can cause nuisance or hazard.
4. The vent shall terminate a minimum of 12 in (30 cm) above expected snowfall level to prevent
blockage of vent termination.
Vent pipes serving power vented appliances are classified by building codes as
“vent connectors”. Required clearances from combustible materials must be
provided in accordance with information in this manual under Location Of Water
Heater and Clearances, and with the National Fuel Gas Code and local codes.
Clearance to combustibles for all venting pipes and
terminals
For installations in the US
0” minimum
For installations in Canada
Refer to vent pipe and terminal
manufacturer’s installation instructions
for clearances to combustibles
DO NOT use the placement of insulation or other materials in the required
clearance spaces surrounding the venting to combustible material unless
otherwise specified.
WARNING
Risk of carbon monoxide poisoning or fire due to joint separation or pipe
breakage.
This water heater must be properly vented and connected to an approved vent
system in good condition. DO NOT operate water heater with the absence of
an approved vent system. A clean and unobstructed vent system is necessary
to allow noxious fumes that could cause injury or loss of life to vent safely and
will contribute toward maintaining the water heater’s efficiency. The
acceptance of the venting system is dependent upon full compliance with
these installation instructions. When an existing Category I appliance is
removed or replaced, the original venting system may no longer be sized to
properly vent the attached appliances.
For installations in Canada, the venting system must NOT pass through rated
fire separations.
The venting system must be free to expand and contract. This venting system
must be supported in accordance with these instructions.