31
Venting Installation Tips
Support piping:
• Horizontal runs—At least every 5 ft (1.5 m)
• Vertical runs—Use braces
• Under or near elbows
Venting Configurations
For heaters connected to gas vents or chimneys, vent
installations shall be in accordance with the NFGC
(U.S.), or B149 (Canada), or applicable provisions of
local building codes.
Table M: Category IV Vertical Vent & Vertical Direct Vent
1
Vent lengths are based on a lateral length of 2 ft. Refer to the latest edition of the NFGC for further details.
* Subtract 10 ft per elbow. Max. 7 elbows.
** Only Duravent polypropylene is approved for the XPak FT product.
Model
No.
Certified Vent
Material
Vent and
Intake Air
Vent Size
(in.)
Vertical Vent Height
1
(ft) Combustion
Air Intake
Pipe
Material
Vertical Air
Inlet Max.
Length* (ft)
Min.
Max.
88AR
(Canada Only:
ULC-S636 PVC
and CPVC)
Stainless Steel,
AL29-4C,
ANSI/ASTM D1785
Sch 40 PVC,
ANSI/ASTM F441
Sch 40 CPVC
Polypropylene**
2
5
50
Galvanized
Steel,
PVC, ABS,
CPVC
50
3
100
100
108AR
198AR
278AR
398A
3
60
60
4
100
100
NOTE:
Ensure adequate clearances to allow annual
inspection of the venting system.
Model No.
Size
(in.)
Approved
Intakes
Approved Plastic
Terminals
Approved SS Terminals
88AR
3
PVC 90° Elbow,
Sch 40
Galvanized 90°
Elbow,
SS 90° Elbow,
ABS 90° Elbow
3" PVC/CPVC Elbow
Sch 40*,
Duravent
Polypropylene
FasNSeal
®
FSTT 3
108AR
198AR
278AR
398A
4
4" PVC/CPVC Tee
Sch 40*,
Duravent
Polypropylene
FasNSeal
®
FSTT 4
Table N: Horizontal Vent and Air Intake Terminals
*Must be ULC-S636 materials in Canada.
Vertical Venting (Category IV)
Installation
The maximum and minimum venting length for this
Category IV appliance shall be determined per the
NFGC (U.S.) or B149 (Canada).
CAUTION:
This venting system requires the
installation of a condensate drain in the vent piping
per the vent manufacturer’s instructions. Failure to
install a condensate drain in the venting system will
void all warranties on this boiler. Condensate is
acidic and highly corrosive. The drain line must not
be allowed to freeze. Take appropriate measures.
Содержание 88AR-398A
Страница 18: ...18 Fig 13 MODE 1 Single Boiler Primary Secondary Piping...
Страница 19: ...19 Fig 14 MODE 2 Single Boiler Primary Secondary Piping with Indirect DHW on System Loop...
Страница 20: ...20 Fig 15 MODE 3 Single Boiler Primary Secondary Piping with Indirect DHW on Boiler Loop...
Страница 47: ...47 WIRING DIAGRAM Fig 46 Wiring Diagram...
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