27110331-01 - 5/20
PHTM II
Installation, Operating & Service Instructions
CPVC/PVC Concentric Terminal
WARNING
Asphyxiation Hazard.
All CPVC/PVC vent joints must be glued. Failure
to comply could cause products of combustion
and/or carbon monoxide to enter the building,
resulting in severe personal injury, death or
substantial property damage.
1. Concentric vent terminals listed in Table 8-9
may be used to terminate air and vent outside
building per Figure 8-10. Both air and vent pipes
must attach to terminal kit.
WARNING
Asphyxiation Hazard.
If vent system is too short to accommodate
required 30 in. (760 mm) of CPVC pipe and
CPVC elbow between boiler and PVC venting,
use listed CPVC terminal kit. Failure to comply
could result in severe personal injury, death or
substantial property damage.
2. Required vent pipe and fittings listed in Table
7-11.
Table 8-9: CPVC/PVC Concentric Terminal Kits
Length Ipex Diversitech
2 in. (60 mm) PVC 196005 CVENT-2
2 in. (60 mm) CPVC 197040 N/A
3 in. (80 mm) PVC 196006 CVENT-3
3 in. (80 mm) CPVC 197009 N/A
!
!
Sidewall Direct Venting (continued)
Note: Additional Ipex concentric terminal kits with
different lengths may also be used.
Figure 8-10: CPVC/PVC Concentric Terminal
3. Follow terminal manufacturer's instructions and
Figure 8-11 for assembly.
4. If needed, terminal can be shortened. Follow
terminal manufacturer's instructions and Figure
8-12.
WARNING
Asphyxiation Hazard.
Ensure rain cap is installed before operating
boiler. Operation without rain cap installed could
cause product damage or improper operation
resulting in severe personal injury, death or
substantial property damage.
!
12" (305mm) Min
above grade/snow line
Location
of optional
screen
Wye Fitting
Sidewall
1" (25mm) Min
2" (50mm) Max
Combustion
air
Inner Pipe
Outer Pipe
Clamp or Strap
(field supplied)
Rain Cap
Elbow
(field supplied)
Combustion
air
Vent Vent
Figure 8-11: CPVC/PVC Concentric Terminal
Installation
Grade/
Snow line
IPEX or Diversitech
Concentric Terminal
12" (305mm) Min.
1" (25mm) Min.
2" (50mm) Max.
From boiler
vent connection
To boiler
air connection
Figure 8-12: CPVC/PVC Concentric Terminal
Dimensions
'C'
12"
(305mm)
Min
'B'
Concentric
Wye Fitting
*Inner
Vent Pipe
Rain Cap
Outer Air
Intake Pipe
To install stainless steel screw and nut
locate drill location dimple on outside
of rain cap and drill a 3/16" (4.8mm)
hole through cap and inner pipe wall
ensuring path of hole is perpendicular
to inner pipe. Do not overtighten screw.
Notes:
1. All cuts must be square and deburred.
2. Lengthening of terminal is not permitted.
*Overall length of inner
pipe to be 'A' longer than overall
length of outer pipe.
Kit Size *'A' 'B' 'C' Manufacturer
2"
7-3/8" (187mm) 1-3/4" (44mm)
3-1/2" (89mm)
IPEX
12-3/16" (310mm) 3/4" (19mm)
DIVERSITECH
IPEX
DIVERSITECH
3"
4-1/2" (114mm)
8-3/4" (222mm) 2-1/4" (57mm)
1" (25mm)
12-3/16" (310mm)
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