I Series Combi Installation Manual

Rinnai I-Series Condensing Boiler Combi Manual 21
 I-Series boilers can be installed in
direct vent or non-direct vent
applicaons.
 When installed as Direct Vent, refer to
the following secon for a complete
list of approved vent manufacturers
and products: “5.5.1 Direct Vent:
Approved Vent Manufacturers and
Products.”
 When installed as Non-Direct Vent
(Room Air), the vent must be Category
IV and of a type listed by a naonal
recognized tesng agency.
 Exhaust must be directly vented to
the outside. Combuson air can be
provided from outside (Direct Vent) or
from room air (Non-Direct Vent).
 If using room air (non-direct vent) for
combuson, ensure the required
volume of indoor air is available
according to the Naonal Fuel Gas
Code, ANSI Z223.1/NFPA 54.
 Avoid dips or sags in horizontal vent
runs by installing supports per the
vent manufacturer’s instrucons.
 Support horizontal vent runs every 4
 (1.2 m) and all vercal vent runs
every 6  (1.83 m) or as per vent
manufacturer’s instrucons or local
code requirements.
Topics in this secon
 Guidelines
 Venng Installaon Sequence
 Terminaon Consideraons
 PVC Venng Safety Switch
 Venng Opons
5
 Venng should be as direct as possible
with a minimum number of pipe ngs.
 For manufactured vent systems, vent
connecons must be rmly pressed
together so that the connecons form an
air ght seal. Follow the venng
manufacturer’s instrucons.
 Refer to the Schedule 40 PVC/CPVC
manufacturer for appropriate ngs,
solvents or joining methods.
 If venng reassembly is needed, follow
the steps for installing the venng in the
following secons. Make certain that the
vent piping and seals are not damaged.
Only use sealants, primers, or glues that
are approved for the vent material in use.
 Refer to the instrucons of the vent
system manufacturer for component
assembly instrucons.
 If the vent system is to be enclosed, it is
suggested that the design of the enclosure
shall permit inspecon of the vent system.
The design of such enclosure shall be
deemed acceptable by the installer or the
local inspector.
 Any issues resulng from improper vent
installaon will not be covered by
warranty.
 DO NOT use cellular core PVC/CPVC.
 DO NOT use Radel, ABS, or galvanized
material to vent this appliance.
 DO NOT cover non-metallic vent pipe
and ngs with thermal insulaon.
 DO NOT combine vent components
from dierent manufacturers.
 DO NOT reduce the vent diameter. Vent
diameter cannot be less than 2 in.
 DO NOT connect the venng system
with an exisng vent or chimney.
 DO NOT common vent with the vent
pipe of any other manufacturer’s boiler
or appliance.
WARNING