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Legacy™ Model LRZM Pool/Spa Heater
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Installation and Operation Manual
At least 457 mm access must be available in
front of the heater for burner removal and access to the
igniter.
If the heater is to be installed in a garage, or
similar structure, all burners and burner ignition
devices must have a minimum 457 mm clearance
above the floor.
This heater must be installed at least 1.52 m from
the inside wall of a pool unless the heater is separated
from the pool by a solid fence, wall or other permanent
solid barrier.
2.5.3 Flooring
The heater must be installed on a
level
surface
of noncombustible construction or on fire-resistant
slabs or arches. Noncombustible flooring is defined
as flooring material and surface finish not capable of
being ignited and burning and with no combustible
materials against the underside. Acceptable materials
are those consisting entirely of a combination of steel,
iron, brick, tile, concrete, slate, glass or plaster.
Do not
install the heater directly on a combustible wood or
carpet floor without placing a noncombustible platform
between the floor and the heater.
The heater can be installed on a combustible floor
if a noncombustible base assembly, available from
Zodiac, is used. See the heater rating plate or the Parts
List (Section 12) of this manual for the appropriate
base part number.
Heaters must never be installed
directly on carpeting.
As an alternative to the Zodiac noncombustible
base plate, the heater may be placed on a combustible
surface when there is a platform under the heater made
of hollow masonry no less than 102 mm thick, covered
with sheet metal at least 24 gauge thick and extend-
ing beyond the full width and depth of the heater by at
least 153 mm in all directions. The masonry must be
laid with ends unsealed, and joints matched to provide
free circulation of air from side to side through the
masonry (see Figure 2). If the heater is installed in a
carpeted alcove, the entire floor of the alcove must be
covered by a noncombustible panel.
2.5.4 outdoor installation
The Legacy Model LRZ millivolt heater can be
installed in the low-profile Type A flueless configu
-
ration as received from the factory. Alternately, the
heater may be installed outdoors using a Type B11
vent cap. This vent cap is used in high wind installa-
tions. No draft hood is required for this type of outdoor
installation.
Locate the heater in an
open, unroofed area
. Do
not install the heater under a deck. Do not locate the
heater below or adjacent to any doors, glass openings,
louvers, grills, etc., which connect in any way with an
inhabited area of a building, even though the access
might be through another structure (e.g., a garage
or utility room). There must be a minimum of 2 m
horizontally or 2 m vertically between the heater and
any door, glass opening, or gravity inlet into a build-
ing. See Figure 3.
The top surface of the heater must be at least
0.91 m above any forced air inlet, or intake ducts
located within 3.0 m horizontally.
If the heater is installed under an overhang, there
must be a minimum clearance of 1.5 m above the top
of the heater and the structure should not overhang the
heater more than 0.30 m. The area under the overhang
must be open on three (3) sides. This prevents combus-
tion gases from being diverted into living areas
through doors, windows, or gravity inlets.
Figure 2. noncombustible platform
153mm
153mm
notes:
1. Blocks must provide a solid base and be braced so they
cannot slip out of place.
2. Air openings in blocks must be arranged to provide un-
restricted opening through entire width or length of base.
3. Sheet metal must be at least 24 ga. and extend 153 mm
beyond the heater jacket on all sides.
Sheet Metal Min.
Thickness 24 Ga
Hollow Concrete
Block Platform
table 3. Minimum Heater Clearances
From Combustible surfaces
Note: Clearances listed in Table 4 are manufacturer's tested
values. These are given as minimum values. Where local
codes apply, and values are different than those listed in
Table 4, use the greater value to ensure safe operation.
SIDE OF HEATER
MINIMUM CLEARANCE
Millimeters
BLANK
203
REAR
150
PIPING
355
TOP
1120
FRONT
457
Summary of Contents for Legacy LRZ
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