Category Iv - Vent Installation - Through The Roof; Termination Fittings - Through The Roof; Fig. 16 - Termination Clearances Of Category Iv System - IDEAL Exalt Solo 110 Manual

CHAPTER 3 - CATEGORY IV (INDOOR AIR) INSTALLATION OF VENT/AIR PIPING
d. At least 3 feet [0.9 m] above any forced air intake
within 10 feet [3 m] (Does not apply to the
combustion air inlet of a direct vent appliance).
e. No closer than 4 feet [1.2 m] below or
horizontally from any door, window or gravity
air inlet.
f. Must be at least 4 feet [1.2 m] from any electric
meters, gas meters-regulators, relief valves or
other equipment. Never terminate the vent
above or below any of these items within 4 feet
[1.2 m] horizontally.
g. A minimum 12 inches [30.5 cm] horizontal spacing
from other fan assisted appliance vents. Never
terminate the vent above or below any fan assisted
vent within 12 inches [30.5 cm] horizontally.
6. Locate the vent termination in a manner to protect
from damage by foreign objects, such as stones,
balls, or buildup of leaves or sediment.
7. Do not connect any other appliance to the vent
pipe or multiple boilers to a common vent pipe.
3.1.2 Category IV - Vent Installation - Through
the Roof
1. Vent pipe penetration through combustible or non-
combustible wall material must maintain a minimum
1/4" [6 mm] clearance for 3" [80 mm] PVC/CPVC vent
or 1" [2.5 cm] for 2" [60 mm] PVC/CPVC vent. The
diameter of the penetration hole must be 4" [102
mm] minimum for 2" [60 mm] and 3" [80 mm] pipe.
When using Polypropylene or AL29-4C® Stainless
Steel Vent refer to vent manufacturer's Installation
Instructions for clearances.
2. The installer must use a galvanized metal thimble
DO NOT
terminate
above any
door, window
and air inlet
4"
4"
More
than 7'

Fig. 16 - Termination Clearances of Category IV System

for the vent pipe penetration.
3. Locate the vent pipe penetration to provide
clearances as described in Fig. 15 on page 24.
4. The installer must comply with all local codes for
isolating the vent pipe as it passes through floors,
ceilings and roofs.
5. The installer must provide adequate flashing and a
sealing boot sized for the vent pipe.

3.1.3 Termination Fittings - Through the Roof

1. The vent and combustion air terminations must
include a factory supplied "bird screen" installed as
shown in Fig. 3 and Fig. 4 on page 14.
2. The combustion air piping must terminate at the
boiler with a 90º elbow.
3. The vent piping must terminate vertically with a
coupling as shown in Fig. 15 on page 24.
Do not extend the vent pipe above the roof
beyond the dimensions shown in Fig. 15 on
page 24. Extended exposure of the vent
pipe could cause condensate to freeze and
block the vent pipe, resulting in substantial
At least 3'
3'
Min
Forced air inlet
WARNING
property damage, serious injury, or death.
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