AHRI APEX, Installation, Operating And Service Instructions

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IV. Venting
D. Stainless Steel Venting (continued)
Vent System
Component
Part
Numbers
Equivalent
Length of Pipe
APX425 and
APX525
4 In. Vent
SS Vent Kit 102501-02
N/A
Horizontal Vent Terminal
(Included in Kit)
8116313
PVC to SS Vent Adapter
(Included In Kit)
102220-01
Vertical Vent Terminal 102680-02
Pipe x 1 ft. (0.3 m) 100176-01 1 ft. (0.3 m)
Pipe x 3 ft. (0.9 m) 100177-01 3 ft. (0.9 m)
Pipe x 5 ft. (1.5 m) 100178-01 5 ft. (1.5 m)
Pipe x Adjustable 100179-01
Equal to
Installed Length
1.06 to 1.64 ft.
(0.3 m to 0.5 m)
90° Elbow 100180-01 8 ft. (2.4 m)
45° Elbow 100181-01 4.5 ft. (1.4 m)
Horizontal Drain Tee 100182-01 2 ft. (0.6 m)
Vertical Drain Tee 100183-01 7.5 ft. (2.3 m)
Single Wall Thimble 100184-01 N/A
Table 11A: Thermal Solutions Vent System
Components (Stainless Steel, 4 in. only)
Manufacturer
Vent
System
Nominal Dia.
PVC to SS
Adapter
Wall Thimbles
Horizontal
Termination
Vertical
Termination
M&G/DuraVent FasNseal
4 in.
(100 mm)
810005231 FSWT4 Tee: FSTT4 FSBS4
6 in.
(150 mm)
810005545 FSWT6 Tee: FSTT6 FSBS6
Z-Flex
SVE Series III
(“Z-Vent III”)
4 in.
(100 mm)
2SVSTTA04.5 2SVSWTF04 Tee: 2SVSTTX04 2SVSTPX04
6 in.
(150 mm)
2SVSTTA06.5 2SVSWTF06 Tee: 2SVSTTX06 2SVSTPX06
NOTE: See vent system manufacturer’s literature for other part numbers that are required such as straight pipe, elbows, firestops
and vent supports.
Table 11B: Alternate Vent Systems and Vent Components (Stainless Steel)
Figure 16: Field Installation of Two-Pipe Vent
System Adapter for Stainless Steel
c. Where the use of “silicone” is called for in the
following instructions, use GE RTV 106 or
equivalent for the vent collar. Seal galvanized
combustion air piping sections with any general-
purpose silicone sealant such as GE RTV102.
Seal PVC combustion air piping sections with
PVC cement.
d. Do not drill holes in vent pipe.
2. Field Installation of CPVC/PVC Two-Pipe
Vent System Connector and PVC to Stainless
Steel Adapter
a. Install CPVC/PVC two-pipe vent system
connector. Follow instructions in “2. Field
Installation of CPVC/PVC Two-Pipe Vent
System Connector” under “B. CPVC/PVC
Venting.” See also Figures 9 and 16.
b.
Models APX425 and APX525 only:
Apply
provided dielectric grease (grease pouch taped to
the vent system connector) all around to the vent
or air connection inner red silicon gasket.
c.
Models APX625, APX725 and APX825
only:
Apply a coating of supplied red RTV
silicone sealant, at least 1 in. (25 mm) wide,
around circumference of PVC to stainless steel
adapter male end.
d. Push and twist PVC to stainless steel adapter
into two-pipe vent system connector vent or
combustion air supply port until bottomed out.
See Figure 16.
e. Tighten the worm band clamp screw to secure
PVC to stainless steel adapter.
f. Do not install PVC to stainless steel adapter
at the lower combustion air supply port of the
two-pipe vent system connector when using PVC
pipe for combustion air supply to boiler.