Install Instructions

Installation & Servicing Instructions Rinnai Q-Series

6.7.3 Installation of the vent system

Consult local and state codes pertaining to special building code and ﬁ re

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 6.7.7.

The maximum permissible lengths are listed in table 9, chapter 6.7.7.

Decide how to install the exhaust and air intake system. You can choose among:

- Concentric system

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 ﬁ tted, with or without elbow pieces. The maximum

permissible pipe length is displayed in table 9, chapter 6.7.7.

- Parallel system

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 separate supplied

kit, with 2 vent adapters 3" (ø80mm), cover 5" (ø125mm), vent exhaust pipe and

gaskets should be ﬁ tted instead of the concentric vent adapter on top of the boiler.

See chapter 6.7.3.1 for installation. The maximum permissible pipe length is set out

in table 9, chapter 6.7.7.

- Room Air System (indoor combustion air)

The boiler can use room air for combustion. If this option is selected the boiler must

ﬁ rst be converted to the parallel system. A single exhaust pipe can then be ﬁ tted.

It is required to use a room air ﬁ lter (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 6.7.7.

Rinnai strongly recommends the use of the room air ﬁ lter 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.

NOTICE