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4. Minimum Vent and Air Intake Lengths - Observe the minimum vent lengths shown in Tables 7.1, 7.13 and 7.21.
5.
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 below)
• Air Intake - 0”
• Concentric Portion of Concentric
Terminals - 0”
6. 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.
Les chaudières de catégories I, II et IV doivent présenter des tronçons horizontaux dont la pente montante est d’au moins
5/8 po par pied (52 mm/m) entre la chaudière et l’évent.
Vii. Venting
A. Vent System Design (continued)
Table 7.1: Vent/ Air Intake Fitting Equivalent Length
CPVC/PVC Fitting
Equivalent Length (ft)
PolyPro, Polyflue or InnoFlue
Vent Fitting
Equivalent Length (ft)
2” 90° Elbow (“Sanitary Bend”)
2.6
2” 90° Elbow
4.5
3” 90° Elbow (“Sanitary Bend”)
4.0
3” 90° Elbow
8.7
2” 90° Elbow (“Short Bend” )
6.0
2” 90° Elbow
2.5
3” 90° Elbow (“Short Bend”)
10.0
3” 45° Elbow
4.6
2” 45° Elbow
1.5
3” 45° Elbow
2.0
2” Coupling
0.0
3” Coupling
0.0
Figure 7.2: CPVC and PVC Elbows
Summary of Contents for K2WT
Page 82: ...82 107110 01 6 16 Figure 10 4 Proper Installation of Header Sensor X Wiring continued ...
Page 83: ...83 107110 01 6 16 X Wiring continued Figure 10 5 Internal Ladder Diagram ...
Page 84: ...84 107110 01 6 16 X Wiring continued ...
Page 85: ...85 107110 01 6 16 Figure 10 6 Internal Wiring Connections Diagram X Wiring continued ...
Page 95: ...95 107110 01 6 16 Lighting and Operating Instructions XI Start Up and Checkout continued ...
Page 140: ...140 107110 01 6 16 XV Repair Parts continued ...
Page 142: ...142 107110 01 6 16 XV Repair Parts continued ...
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