Installation Of The Vent System - Rinnai E75CRN 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:
- Parallel system (see chapter 6.7.2a)
The parallel connection is provided standard initially on the E50CRN.
The boiler connection diameter is 2x 3" (80mm). In this case a separate supplied kit,
with 2 vent adapters 3" should be fitted on top of the boiler, to which the venting and air
supply system can be fitted, with or without elbow pieces. The maximum permissible
pipe length is set out in table 9, chapter 6.7.6.
The E75CR and E110CR boilers are provided standard initially with a concentric
connection, but can be converted to a parallel system with supplied adapters.
- Concentric system (see chapter 6.7.2b)
The concentric connection is provided standard initially on the E75CR and E110CR.
The boiler connection diameter is concentric 80/125mm) to which the concentric
venting and air supply system can be fitted, with or without elbow pieces. The maximum
permissible pipe length is set out in table 9, chapter 6.7.6.
The E50CRN boiler is provided standard initially with a parallel connection, but can be
converted to a concentric system with with an optional adapter (Part nr. 808000023).
- Room Air System (indoor combustion air)
The boiler can use room air for combustion. If this option is selected the boiler must
be provided with a parallel vent system. A single exhaust pipe can then be fitted.
It is required to use a room air filter (Part nr. 808000025) when using indoor air for
combustion. See chapter 6.7.3.2 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 when a Room Air
System (indoor combustion air) is used.
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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