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UEZ-IOM (07-23) 1034347-I
Table 17. Horizontal Vent Terminal/Combustion Air Package (Option CC6) Components
PN Description Quantity
221247 Kit package 1
221069 Concentric adapter box with silicone sealing ring (see Figure 11 and Figure 12) 1
221089 Bird screen, exhaust outlet (see Figure 18) 1
124940 Ring guard, air inlet (see Figure 18) 1
221186 Spacer, inlet air guard 4
37661 Screw, self-drilling, #10-16 × 1/2, inlet air guard 4
221091 Cap, condensate drain connection, 4-inch PVC 1
BIRD SCREEN
RING GUARD
Figure 18. Option CC6 Components
• Install the horizontal vent kit as follows:
⚠ DANGER ⚠
• To prevent combustion products from entering the occupied space, all vent terminals must be
positioned or located away from fresh air intakes, doors, and windows. Failure to comply could
result in severe personal injury or death and/or property damage.
• In climates with below freezing temperatures, condensate may form icicles on the vent terminal.
Locate the terminal where falling icicles do not present a hazard.
• Consider local snow depth conditions. The vent must be at least 6 inches (152 mm) above the
anticipated snow depth.
1. Determine vent/combustion air terminal location on outside wall:
a. Refer to Table 8 and Table 9 or Table 10 and Table 11 to ensure that location complies with vent length
requirements.
b. For most applications, ensure that vent terminal is level with heater mounting height.
c. Allow downward pitch of 1/4-inch per foot (6 mm per 305 mm) for condensate drain.
NOTE: Local codes supersede all provisions in these instructions and in National Fuel Gas Code
Z223.1.
⚠ WARNING ⚠
Avoid positioning the vent terminal above a walkway as there may be a small amount of condensate
that drips from the end of the vent/combustion air terminal. In cold climates, the condensate may
form icicles.
d. Ensure that distance of vent terminal from adjacent public walkways and buildings and window and building
openings complies with local codes. Absent any local codes, distance must comply with National Fuel Gas
Code Z223.1.
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