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PLEASE NOTE: SH22 IS FOR OUTDOOR PERMANENT INSTALLATIONS ONLY AND SH22I IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL
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Installing the SH22i Water Heater, Continued...
Special Notes, Regulations, and Cautions Regarding Venting
For Category II, III and IV water heaters, the venting system shall be installed in accordance
with the water heater manufacturer’s instructions and, if applicable, the venting system
manufacturer’s instructions. The SH22i is a Category III water heater. Please find detailed
instructions for installation of the SH22i and venting on pages 26-32.
The instructions for the installation of the venting system shall specify that the horizontal
portions of the venting system shall be supported to prevent sagging; the methods of and
intervals for support shall be specified. These instructions shall also specify that the venting
system:
ii) for Category III and IV appliances, slope of a horizontal venting system shall be as specified
in the appliance manufacturer’s instructions; These instructions can be found on page 26-32.
If an appliance is marked, “Category III”, the installation manuals shall specify the venting
system to be used on page 26-32.
When an existing Category III appliance is removed or replaced, the original venting system
may no longer be sized to properly vent the attached appliances. Instructions shall also indicate
effects of an improperly sized venting system (formation of condensate, leakage, spillage, etc.)
All approved Installation Instructions for the SH22i can be found on pages 19-22.
Be sure to periodically clean the screens in the vent terminal where applicable.
Before you begin installation, ensure that you have a vent port available that will terminate at
least 12 inches above the ground and at least 12 inches above normal amounts of snow. Please
ensure that the vent termination point is clear of debris, blockages, and snow before using the
SH22i.
Installing the SH22i Water Heater, Continued...
Special Notes, Regulations, and Cautions Regarding Venting
For Category II, III and IV water heaters, the venting system shall be installed in accordance
with the water heater manufacturer’s instructions and, if applicable, the venting system
manufacturer’s instructions. The SH22i is a Category III water heater. Please find detailed
instructions for installation of the SH22i and venting on pages 26-32.
The instructions for the installation of the venting system shall specify that the horizontal
portions of the venting system shall be supported to prevent sagging; the methods of and
intervals for support shall be specified. These instructions shall also specify that the venting
system:
ii) for Category III and IV appliances, slope of a horizontal venting system shall be as specified
in the appliance manufacturer’s instructions; These instructions can be found on page 26-32.
If an appliance is marked, “Category III”, the installation manuals shall specify the venting
system to be used on page 26-32.
When an existing Category III appliance is removed or replaced, the original venting system
may no longer be sized to properly vent the attached appliances. Instructions shall also indicate
effects of an improperly sized venting system (formation of condensate, leakage, spillage, etc.)
All approved Installation Instructions for the SH22i can be found on pages 19-22.
Be sure to periodically clean the screens in the vent terminal where applicable.
Before you begin installation, ensure that you have a vent port available that will terminate at
least 12 inches above the ground and at least 12 inches above normal amounts of snow. Please
ensure that the vent termination point is clear of debris, blockages, and snow before using the
SH22i.
SH
