A.O. Smith Cyclone XL 100 Series, Руководство по обслуживанию

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VENTING VENTING
This section of the Service Handbook is not a complete venting installation instruction. Refer to the Instruction Manual that came with
the water heater; ensure the venting has been installed per all Instruction Manual requirements. Costs to correct installation errors are
not covered under the limited warranty.
GENERAL VENTING INFORMATION
The water heaters covered in this Service Handbook are Category IV appliances and may be installed in either a Power Vent or Direct
Vent configuration.
CATEGORY IV APPLIANCE
Category IV appliances operate with a positive vent (exhaust) static pressure and with vent gas temperatures low enough to produce
condensate in the vent piping.
POWER VENT CONFIGURATION
Power Vent configurations derive all combustion air from the room where they are installed and discharge all flue gases to the outdoor
atmosphere through a sealed vent (exhaust) pipe. Power vent configurations have one vent pipe connected to the water heater which
can be terminated in a vertical or horizontal arrangement.
DIRECT VENT CONFIGURATION
Direct Vent configurations derive all combustion air directly from the outdoor atmosphere through a sealed intake air pipe and discharge
all flue gases to the outdoor atmosphere through a sealed vent (exhaust) pipe. Direct Vent configurations have two pipes connected to
the water heater, one vent pipe and one intake air pipe. Direct Vent configurations can also be terminated in a vertical or horizontal
arrangement.
PIPE SIZE REQUIREMENTS
Ensure the correct size pipe has been used for the length of intake air and/or vent piping installed. Refer to the Instruction Manual
supplied with the water heater for the correct size and length of vent piping.