PB Heat Peerless Combi 160, User Manual

Page: 37 / 107

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8.3 - Design of the
venting system
This boiler can be fi tted with a very
long venting system. However there
is a relationship between the length
of the venting system and the power
input of the boiler. Figure 28 shows
this relation which and installer must
consider when in the designing stage
of the venting.
The maximum length of the Split vent
system is 300 ft (Air intake plus fl ue
exhuast).
The maximum length of the concentric
system is 70 ft.
Each 45° elbow inserted in the
concentric or split venting system, has
a loss of pressure equivalent to 2.5 ft
of linear pipe.
Each 90° elbow inserted in the
concentric or split venting system, has
a loss of pressure equivalent to 5 ft of
linear pipe.
The minimum length of the venting
system (two pipes or concentric) is 1 ft
with one elbow.
8.4 Prevent
Combustion air
contamination
Install air inlet piping as described in
Section 8. You must pipe combustion
air to the boiler air intake. Do not
terminate vent/air in locations that can
allow contamination of combustion air.
Figure 28 - Relation between Power input and Vent
system length
8 - INSTALLATION - Vent & combustion air
WARNING!!! Contaminated
combustion air will damage the boiler,
resulting in possible severe personal
injury, death or substantial property
damage.
Ensure that that combustion air
will not contain any of the following
contaminants.
- Permanent wave solutions
- Chlorinated waxes/cleaners
- Chlorine based swimming pool
chemicals
- Calcium Chloride used for thawing
- Sodium Chloride used for water
softening
- Refrigerant leaks
- Paint or varnish removers
- Hydrochloric acid/muriatic acid
- Cements and glues
- Antistatic fabric softeners used in
clothes dryers.
- Chlorine-type bleaches, detergents
and cleaning solvents found in
household laundry rooms
- Adhesives used to fasten building
products and other similar products.
Do not pipe combustion air near
sources of products that may
contaminate the air combustion, like:
- Dry cleaning/laundry areas and
establishments
- Swimming pools
- Metal fabrication Plants
- Beauty shops
- Refrigeration repair shops
- Photo processing plants
- Auto body shops
- Plastic manufacturing plants
- Furniture refi nishing areas and
establishments
- Remodeling areas
- Garages with workshops
8.5- Install Vent and
Combustion air
piping
WARNING!!! This boiler
must be vented and supplied with
combustion and ventilation air as
described in this section. Ensure
the vent and combustion air supply
comply with these instructions
regarding vent system, air system
and combustion air quality. Inspect
fi nished vent and air piping
thoroughly to ensure all are airtight
and comply with the instructions
provided and with all applicable
codes. Failure to provide a properly
installed vent and air system will
cause severe personal injury or
death.
WARNING!!! Using vent
materials other than those listed
in Table (4) and Table (5), failure to
properly seal all seams and joints,
mixing of venting materials a or
failure to follow vent pipe and fi ttings
manufacturers instructions can result
in personal injury, death or property
damage.
WARNING!!! Never use cellular
(foam) core pipe in vent pipe lines
and fi ttings. Failure to comply can
result in personal injury, death or
property damage.
WARNING!!! Increasing or
decreasing combustion air or vent
piping is not authorized. Failure to
comply can result in personal injury,
death or property damage.
NOTICE Installation must comply
with local requirements and with the
National Fuel Gas Code, ANSI Z223.1
for US installations or CSA B149.1 for
Canadian installations.
For installation in Canada, vent
pipe system must be certifi ed to
ULC-S636.