Installation / Operation Instruction Manual

10
Venting continued-
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 National Fuel Gas Code and
local codes.
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.
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.
NOTICE
For installations in Canada, field supplied vent piping must comply with
CAN/CGA B149.1 (latest edition) and be certified to the Standard For Type BH,
Class II, 65°C, Gas Venting Systems, ULC S636. Components of this listed
system shall not be interchanged with other vent systems or unlisted
pipe/fittings. All components and specified primers and cements of the certified
vent system must be from a single system manufacturer and not intermixed with
other system manufacturer’s vent system parts. The supplied vent connector
and vent termination are certified under ULC S636 and are also certified as part
of the water heater. Refer to the following tables for approved venting materials,
primers, and cements. All approved primers and cements are to be used within
their marked time limitations.
Clearance to combustibles for all venting pipes and terminals
For installations in the US
0” minimum
For installations in the CANADA
Refer to vent pipe and terminal manufacturer’s
installation instructions for clearances to
combustibles
DO NOT place insulation or other materials in the required clearance spaces
between the venting to combustible material unless otherwise specified.