Velocity Shadow Series, Installation And Operating Instructions Manual

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Table 7.5: Summary of Horizontal Twin Pipe Venting Options
Vent Option 1 2
Illustrated in Figure 7.7, 7.8, 7.9 7.7, 7.8, 7.9
Pipe
Penetration
through
Structure
Vent Wall Wall
Intake Wall Wall
Material
Vent
CPVC/PVC
(Note 2)
CPVC/PVC
(Note 2)
Intake PVC PVC
Nominal
Diameter
Vent 2” 3” (Note 4)
Intake 2” 3” (Note 4)
Min Equivalent Vent Length:
Models
080 12” 12”
100 12” 12”
120
Not
Permitted
12”
150 52”
180 52”
Max Equivalent Vent Length (Note 1):
Models
080 60ft 135ft
100 60ft 135ft
120
Not
Permitted
135ft
150 135ft
180 135ft
Terminal
Option A
(Fittings)
Vent
Coupling w
Screen
(Note 3)
Coupling w
Screen
(Note 3)
Intake
Elbow w
Screen
(Note 3)
Elbow w
Screen
(Note 3)
Terminal Option B
(Ipex Low Profile)
Ipex #
196984
Ipex
#196985
Terminal Option C
(Diversitech HVENT)
HVENT-2 HVENT-3
Terminal Option D
(Ipex FGV Concentric)
Ipex 196105 Ipex 196006
Terminal Option E
(Diversitech CVENT)
CVENT-2 CVENT-3
Notes:
1) Max vent lengths shown also apply to the intake. For example, Vent Option #1 may have up to 60ft of vent pipe and also up to 60 ft
of intake pipe.
2) First 30” of vent and vent Elbow connected to boiler must be CPVC. Downstream vent pipe can be PVC except as noted in text.
3) PVC Terminal coupling and inlet elbow may be offset on snorkels as shown in Figure 7.6.
4) For models 80 and 100: Make increase in vent diameter from 2 to 3” at boiler collar (before first elbow). Reduce intake diameter
from 3” to 2” at intake collar.