Specifications

These codes, standards and Zodiac Pool Systems,
Inc., require that the heater be properly vented as
outlined in this manual. Proper ventilation of exhaust
and combustion air are essential for the safe and efcient
operation of the heater. See Section 3.
Section 3. Venting
3.1 Combustion Air Supply
The heater location must provide sufcient air
supply for proper combustion and ventilation of the
surrounding area as outlined in the latest edition of
ANSI
®
standard Z223.1 (NFPA
®
54). The minimum
allowable combustion air opening in the Canadian
Natural Gas and Propane Installation Code (CAN/
CSA B149.1) are not sufcient for safe and proper
operation of the Legacy Model LRZ electronic heaters.
Combustion air openings must be followed per the
requirements of ANSI Z223.1 (NFPA 54) and Table 3.
In general, these requirements specify that the
room in which a heater is installed should be provided
with two permanent air supply openings; one within
12 inches (305 mm) of the ceiling, the other within 12
inches (305 mm) of the oor.
All indoor installations must have openings to
outside air for combustion, ventilation, and dilution of
ue gases from inside the building, see Figure 5 and
Table 3. Zodiac Pool Systems, Inc., does not recommend
indoor installations that do not provide combustion air
from outside the building.
All outdoor shelter installations (Canada only)
must have uninterrupted openings to outside air for
combustion and ventilation. The installation must be in
accordance with the latest edition of CAN/CSA B149.1.
For combustion air supply openings, however, the
requirements of Table 3 MUST be followed for safe
and proper operation. The minimum combustion
air openings allowed in CAN/CSA B149.1 are NOT
sufcient for the model LRZ electronic heaters.
Zodiac Pool Systems, Inc., does not recommend
outdoor shelter installations that depend on internal air
for combustion. Combustion air should be ducted to the
heater from outside the structure.
Outside Air Supply: When combustion air is
supplied directly through an outside wall, each opening
should have a minimum free area of one square inch
per 4,000 BTU/h (1.2kW) input of the total input rating
of all appliances in the enclosed area. If air is provided
through horizontal ducts, each opening and duct must
provide one square inch of ow area for each 2000
BTU/h (0.6 kW). These requirements are summarized
in Table 3. Note that the areas specied are net free
areas and should be increased when the openings are
covered by screens, louvers, grills or other protective
covers. See Figure 5 and Table 3 notes.
Table 3. Air Openings to Outside
Required Net Free Open Area*
for Combustion Air Openings
*Area indicated is for one of two openings; one at oor level and
one at the ceiling, so the total net free area would be double the
gures indicated. For special conditions, refer to NFPA54 ANSI
Z223.1.
The requirements in this table for combustion air openings
MUST be followed for all Canadian installations also. The
minimum allowable combustion air openings in the Canadian
National Standards CAN/CSA B149.1 are not adequate for proper
operation of the LRZ electronic heaters.
NOTE: If using screens and/or metal louvers, compensate by adding
50% additional area to each opening. If using wood louvers each
opening must be at least four times the area indicated in the table
above.
Model
Direct from outside Duct from outside
in
2
(cm
2
) in
2
(cm
2
)
125 32 (206) 64 (413)
175 44 (284) 88 (568)
250 63 (406) 126 (813)
325 82 (429) 164 (1058)
400 100 (645) 200 (1290)
3)
Notes:
1. Use approved
roof jack.
Figure 5. Indoor Installation Venting (USA), or Outdoor Shelter (Canada)
Page 11
ENGLISH
Jandy
®
Legacy™ Model LRZE Pool/Spa Heater by Zodiac
®
|
Installation and Operation Manual