28
PHTM II
Combi Installation, Operating & Service Instructions
110331-07 - 8/23
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.
●
If using stainless steel screw to attach rain
cap, always drill clearance hole in rain cap and
pilot hole in vent pipe appropriate for screw
size to avoid cracking PVC components. Failure
to comply may cause product damage or
improper operation, resulting in severe personal
injury, death, or substantial property damage.
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
397005
CVENT-2
2 in. (60 mm) CPVC
197040
N/A
3 in. (80 mm) PVC
397006
CVENT-3
3 in. (80 mm) CPVC
197009
N/A
!
!
8
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.
!
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
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
