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ELBOW SUPPORT
Elbows are to be supported on one end with either a Ventilated Anchor
Plate (APV), a Ventilated Anchor Plate with Length (APVL), or a Heavy Duty
Wall Support (WSHD). See Figure 60 for an example with an APV and
Figure 61 for an example with a (WSHD).
Figure 60: - Elbow with a Ventilated Anchor Plate (APV)
NOTE: In the case of an APV, flange joint of duct and elbow are to be
secured in place between the Clamp Ring and square plate
Support.
Wall
Figure 61: - Elbow with an Heavy Duty Wall Support (HOWS)
NOTE: Flange joint of duct and elbow are to be secured in place
between the Clamp Rings
32
Duct Section
Half Closure Band
(DBSEK)
Heavy Duty Wall
Support (WSHD)
Half Closure Band
(DBSEK)
45-Degree Elbow
(E45)
Duct Section
ROOF PENETRATION (DSLS-DSLD)
STORM COLLAR (SC)
The Storm Collar (SC) is used above the flashing for complete
weatherization above the roof. It has to be sealed with the outer joint
sealant (not included). See Figure 62.
FLASHING (F)
The roof Flashing (F) is used in conjunction with Storm Collar (SC) for
weatherization on a flat roof. See Figure 63.
ADJUSTABLE FLASHING (F30)
The Adjustable Flashing (F30) is used in conjunction with Storm Collar
(SC) for weatherization on a roof with a pitch 5° to 30°. See Figure 64.
Figure 62 - Storm Collar
Figure 63 - Flashing
Figure 64 - Adjustable Flashing
NOTE : The flashings are non-ventilated and does not provide for any
reduced clearance to combustible.
INSTALLATION PROCEDURE FOR FLASHINGS
1. Cut opening to dimensions specified in Table 9, 10 & 11. See Figure 65a
for flat roof and Figure 66 for a sloped roof.
NOTE: Reinforced the edges of the hole as appropriate for the expected
lead bearing requirements.
2. Slide chimney section through the hole.
3. For lateral stability, supports or guides must be used. The Heavy Duty
Floor Guide (WSHD) must be installed on top of the roof. Any supports
(APV, APVL or WSHD) or a Full Angle Ring must be installed below.
NOTE: Flashing is not intended to take any side load or wind loads
4. Install flashing over the chimney and the guide/support and screw
it.
5. The Storm Collar (SC) is placed around the chimney and sealed to
the casing with outer joint sealant S-350. See Figure 66 for an installed
Flashing (F)
The storm collar should not quite rest on the flashing when the chimney is
cold (a 1/4" gap between the collar and the top of the flashing) .
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