Rinnai E75CN Installation & Servicing Instructions Manual page 38

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Item Description
Plastic Vent and/or air pipes and
fittings
Plastic Pipe cement and primer
Item Description
Stainless steel vent systems
Stainless steel vent systems
Stainless steel vent systems
Plastic Vent System
Plastic Vent System
Plastic Vent System
Approval codes for installation of venting system
38
See Boiler Applications manual for additional venting information.
Terminals should be positioned as to avoid products of combustion entering
openings into buildings or other vents.
Maintain 12" of clearance above the highest anticipated snow level or grade
or, whichever is greater. Please refer to your local codes for the snow level in
your area.
The termination shall be at least 4 feet (1,220 mm) for the US and 6 feet (1,830
mm) for Canada distance from electric meters, gas meters, regulators and
relief equipment. (for room air application only)
Horizontal vent systems should always be installed sloping towards the
boiler (min. 21 mm/m, 1/4"/ feet), in order to avoid condensate retaining in the
vent system. With the condensate running back to the boiler the risk of ice
forming at the terminal is reduced.
The whole route of the vent system must be installed upwards, never
downwards, completely nor partly.
Place pipe supports every 4 feet (1219 mm) of horizontal run, beginning with
the support near the boiler to prevent movement in fi ttings and allow boiler
to be free from any strain or weight on boiler or fi ttings.
The terminal should be located where dispersal of combustion products is
not impeded and with due regard for the damage or discoloration that might
occur to building products or vegetation in the vicinity (see fi g 15 and 16).
In certain weather conditions condensation may also accumulate on the
outside of the air inlet pipe. Such conditions must be considered and where
necessary insulation of the inlet pipe may be required.
In cold and/or humid weather water vapor may condense on leaving the vent
terminal. The effect of such 'water condensation' must be considered.
The terminal must be located in a place not likely to cause a nuisance.
Use the Instructions of the Rinnai venting system for installation and service.
Cellular or Foam core PVC, CPVC and Radel is not permitted for use with the
boiler.
The application of any type of insulation is prohibited for use with any Plastic
venting system.
Flue Material United States
PVC Schedule 40 ANSI/ASTM D1785
PVC - DWV ANSI/ASTM D2665
CPVC Schedule 40 ANSI/ASTM F441
PVC ANSI/ASTM D2564
CPVC ANSI/ASTM F493
Flue Material Manufacturer
Stainless Steel Heat Fab
Stainless Steel Simpson Dura-Vent
Stainless Steel Ubbink
PPS Ubbink
PVC/CPVC IPEX
PPS Centrotherm
Approval Codes for Installation
Canada
ULC S636
Approval code
US/CAN
UL1738 Concentric
twin pipe
UL1738 Flexible liner
UL1738 Concentric
twin pipe
ULC S636
ULC S636
ULC S636 and UL 1738
Flue system
Saf-T Vent SC
Saf-T Vent EZ Seal
FastNSeal Flex
FastNSeal
Rolux Condensing
Vent System
Rolux Condensing
Vent System
System 636
Innoflue
table 7