Page 14 LXi
™
Pool/Spa Heater Installation and Operation Manual
WARNING
Vent pipe diameter must be as required by the Na-
tional fuel Gas Code Z223.1 or the Canadian Instal-
lation Codes for Gas Appliances CAN/CSA-B149.1.
Undersized pipe can result in inadequate venting
and oversize pipe can result in vent condensation.
In either case the result can be release of combus-
tion products to the indoors. This can cause serious
injury or death by carbon monoxide poisoning or
asphyxiation.
AVERTISSEMENT
Le diamètre des tuyaux de ventilation doit répondre
aux exigences du National Fuel Gas Code Z223.1
ou du code canadien des installations des appar-
eils à gaz CAN/CSA B149.1. Des tuyaux trop petits
risquent d’entraîner une ventilation inadéquate et
des tuyaux trop gros risquent de provoquer une
condensation dans les tuyaux. Dans un cas comme
dans l’autre, des produits de combustion risquent
de s’échapper dans le bâtiment et causer des bles-
sures graves ou l’asphyxie par le monoxyde de
carbone.
3.3 Vent Pipe Sizing and General
Installation
The LXi may be installed with venting as a Cat-
egory I or III Fan-Assisted appliance or outdoors with
the integral vent grill.
3.3.1 Outdoor Installations
For outdoor installations, exhaust venting con-
siderations will determine the placement of the heater
(See Section 2.3.4). If the heater cannot be placed so
as to meet the requirements stated in Section 2.3.4,
a vent collar may be added to the heater to move the
exhaust vent opening to a position that complies with
the requirements. In all cases, vent collars must be of
the same diameter as the exhaust outlet of the heater.
Approved vent collars may be obtained through your
Jandy distributor.
3.3.2 Indoor and Outdoor Shelter
Installations
All indoor installations and outdoor shelter in-
stallations require a factory approved vent collar. The
vent collar must be installed without modifi cation and
the vertical vent collar comes factory installed.
All vent installations must be made in accor-
dance with all local, state or provincial codes and
with:
1. The National Fuel Gas Code, ANSI Z223.1
(NFPA 54), latest edition; pay particular at-
tention to the chapter addressing “Venting of
Equipment.” Applicable provisions of additional
applicable local building codes may also need to
be followed.
2. In Canada, CAN/CSA B149.1.
Avoid terminating heater vents near air con-
ditioning or air supply fans. The fans can pick up
exhaust fl ue products from the heater and return them
inside the building, creating a possible health hazard.
Do not locate the vent terminal where fl ue prod-
ucts could strike against building materials and cause
degradation.
Vent opening should be well away from trees
or other obstructions that would prevent free air fl ow
to and from vent terminal. Do not terminate the vent
under decks, stairways, or car ports.
The LXi may be installed for use with standard
vertical venting per tables provided in most local
codes for Category I Fan-Assisted appliances. If the
local code does not include such tables, refer to the
National Fuel Gas Code NFPA 54 / ANSI Z223.1 or
the Canadian Natural Gas and Propane Installation
Code, CAN/CSA-B149.1. Note that the tables for
fan-assisted appliances include both maximum and
minimum vent loading fi gures. The primary purpose
of the maximum ratings are to assure that the vent
operates with negative pressure throughout its length.
The minimum ratings are to assure that vent gases do
not cool too much and thereby assure that condensa-
tion does not occur.
When the installation requires horizontal venting
in excess of what is allowed for Category I installa-
tions or calls for horizontal discharge, the LXi may be
installed with a Category III venting system. Category
III applications must be installed per this installa-
tion manual and the vent manufacturer's installation
instructions. The venting materials must comply with
UL 1738 for Category III venting systems and be con-
structed of stainless steel. In Canada, the venting ma-
terials must be ULC S636 compliant. Vent piping must
be adequately supported with no low spots or sagging
that will allow condensate to collect. The heater must
not be used to support the vent pipe. Horizontal runs
Table 4. Vent Pipe Sizing Table
Heater
Size
Vent Collar Size
Minimum Vertical
Vent Pipe Diameter
(Refer to NFPA 54 or
local codes)
Horizontal Vent Pipe
Diameter
Maximum Horizontal
Vent Length
Maximum No.
of Elbows
Sidewall Vent Kit
250
6 in 15 cm 6 in 15 cm 5 in 13 cm 25 ft 7.6 m 3 R0467301
300
7 in 18 cm 7 in 18 cm 5 in 13 cm 25 ft 7.6 m 3 R0467301
400
8 in 20 cm 8 in 20 cm 6 in 15 cm 25 ft 7.6 m 3 R0467302
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