Installation Of The Vent System - Rinnai E75CN Installation & Servicing Instructions Manual

6.7.3

Installation of the vent system

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Consult local and state codes pertaining to special building code and fire
department requirements. Adhere to national code requirements.
Follow the listed maximum length of vent systems, which are boiler output
dependent.
The maximum permissible lengths are listed in table 9, chapter 6.7.6.
Decide how to install the exhaust and air intake system. You can choose between:
- Concentric system (see chapter 6.7.2a)
The concentric connection is provided standard initially.
The boiler concentric connection diameter is 3"/5" (80/125 mm), to which the venting
and air supply system can be fitted, with or without elbow pieces. The maximum
permissible pipe length is displayed in table 9, chapter 6.7.6.
- Parallel system (see chapter 6.7.2b)
The boiler can be converted to a parallel system with supplied adapters.
It is possible to use a parallel pipe connection of 2x 3". In this case a seperate supplied
kit, with 2 vent adapters 3" (ø80mm), cover 5" (ø125mm), vent exhaust pipe and
gaskets should be fitted instead of the concentric vent adapter on top of the boiler.
See figure 14a for installation. The maximum permissible pipe length is set out in
table 9, chapter 6.7.6.
- Room Air System (outdoor combustion air)
The boiler can use room air for combustion. If this option is selected the boiler must
first be converted to the parallel system. A single exhaust pipe can then be fitted.
It is required to use a room air filter (Art. nr. 808000025) when using indoor air for
combustion. See figure 14b for installation. The maximum permissible pipe length
is set out in table 9, chapter 6.7.6.
Rinnai strongly recommends the use of the room air filter in case of Room
Air System (indoor combustion air).
When the boiler is installed in any of the areas listed in chapter 5.1, "Areas
likely to have contaminants" or any area exposed to the contaminants listed
in chapter 5.1, then sealed combustion is required.
We advise to install a vent system out of the venting system program
supplied by Rinnai (See chapter 19 Parts list Vent system). For further
information about the available components of the venting and air supply
system we recommend you consult Rinnai and the Installation instructions
and parts list documentation.
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