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Figure 7.2: CPVC and PVC Elbows
Table 7.1B: Vent/ Air Intake Fitting Equivalent Length
CPVC/PVC Fitting
Equivalent
Length (ft)
PolyPro, Polyflue
or InnoFlue
Vent Fitting
Equivalent
Length (ft) FasNSeal Vent Fitting
Equivalent
Length (ft)
2” 90° Elbow (“Sanitary Bend”)
2.6
2” 90° Elbow
4.5
3” 90° Elbow
4.0
3” 90° Elbow (“Sanitary Bend”)
4.0
3” 90° Elbow
8.7
3” 45° Elbow
2.0
2” 90° Elbow (“Short Bend” )
6.0
2” 90° Elbow
2.5
3” Straight Tee
18.0
3” 90° Elbow (“Short Bend”)
10.0
3” 45° Elbow
4.6
3” Boot Tee
8.0
2” 45° Elbow
1.5
3” 45° Elbow
2.0
2” Coupling
0.0
3” Coupling
0.0
VII. Venting
A. Vent System Design (continued)
5. Minimum Vent and Air Intake Lengths - Observe the minimum vent lengths shown in Tables 7.5, 7.13 and 7.21.
6. Clearances to Combustibles - Maintain the following clearances from the vent system to combustible construction:
• Vent - 1/4” (also observe clearances through both combustible and non-combustible walls - see 9)
• Air Intake - 0”
• Concentric Portion of Concentric
Terminals - 0”
7. Pitch of Horizontal Vent Piping - Pitch all horizontal vent piping so that any condensate which forms in the piping will run
towards the boiler.
• Pitch CPVC/PVC vent piping 1/4” per foot.
• Pitch Polypropylene vent piping 5/8” per foot.
For Category I, II, and IV boilers, have horizontal runs sloping upwards not less than 1/4” per foot (21 mm/m) from the
boiler to the vent terminal.
Les chaudières de catégories I, II et IV doivent présenter des tronçons horizontaux dont la pente montante est d’au moins
1/4 po par pied (21 mm/m) entre la chaudière et l’évent.
Summary of Contents for K2WT-080B
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Page 89: ...89 107672 01 7 17 X Wiring continued Figure 10 5 Internal Ladder Diagram...
Page 90: ...90 107672 01 7 17 X Wiring continued...
Page 91: ...91 107672 01 7 17 Figure 10 6 Internal Wiring Connections Diagram X Wiring continued...
Page 102: ...102 107672 01 7 17 Lighting and Operating Instructions XI Start Up and Checkout continued...
Page 147: ...147 107672 01 7 17 XV Service Parts continued...
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