Specifications
Installation and Operation Manual
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Legacy™ Model LRZM Pool/Spa Heater
If the heater is installed close to a structure,
protect it from rain water runoff with rain gutters on
the roof or other measures. Do not locate the heater
near irrigation sprinkler systems that could spray water
on it. Water from sprinklers may cause damage to
controls and electronic components.
Avoid locations where wind deection off nearby
structures might cause downdraft conditions. Where
downdraft conditions exist, locate the heater at least
0.91 m from vertical surfaces (e.g., nearby buildings
and walls).
The Legacy heater can be installed indoors using
the draft diverter available from Zodiac, and a Type
B11 ue system complying with the national and
local applicable standards in addition to the Building
Regulations (see Section 2).
The applicable codes, standards and Zodiac,
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 efcient
operation of the heater.
The heater location must provide sufcient air
supply for proper combustion and ventilation of the
surrounding area.
In general, the room in which a heater is installed
should be provided with two (2) permanent air supply
openings; one within 305 mm of the ceiling, the other
within 305 mm of the oor. All indoor installations
must have uninterrupted openings to outside air for
combustion, ventilation, and dilution of ue gases
from inside the building (see Figure 4 and Table 4).
Zodiac, does not recommend indoor installations that
do not provide combustion air from outside the build-
ing.
Positions of Air Vents Air Vent Areas
(Air Direct From Outside)
High Level 270 cm
2
plus 2.25 cm
2
per kW in
excess of 60 kW total rated input
Low Level 540 cm
2
plus 4.5 cm
2
per kW in
excess of 60 kW total rated input
Exhaust Fans or Vents: Any equipment
which exhausts air from the room where the heater
is installed can deplete the combustion air supply or
reverse the natural draft action of the venting system.
This could cause ue products to accumulate in the
room. Additional air must be supplied to compensate
for such exhaust.
The information in Table 3 is not applicable in
installations where exhaust fans or blowers of any type
are used. Such installations must be designed by quali-
ed engineers.
The heater must be completely isolated and
protected from any source of corrosive chemical fumes
such as those emitted by trichlorethylene, perchloro-
ethylene, chlorine, etc.
Do not store any chemicals, cleaners, or other cor-
rosive material near combustion air openings or in
the room. Avoid locating appliance vents in the vi-
cinity of combustion air openings. Failure to prevent
corrosive materials from mixing with combustion air
can result in reduced heater life and unsafe heater
operation.
Connect the draft diverter to a Type B11 ue
system of at least the same diameter, and end at least
0.6 meters above the highest point of the roof or other
object that is within 3.05 m of the vent. Install a certi-
ed terminal which allows a full equivalent opening
for ue products (see Figure 4). There must be at least
600 mm of vertical ue above the drafthood. Bends in
the ue should not exceed 45° to the vertical.
To make sure the heater operates safely and satis-
factorily, the ue system must be able to completely
remove combustion products at all times. The number
of bends and lengths of horizontal ue pipe used
should be kept to a minimum in order to reduce gas
ow resistance.
Compliance with all national and local applicable
installation codes and regulations should be strictly
observed.
The ue design should avoid the formation of
excessive quantities of condensate. For this reason, it
is recommended that all ues be insulated and lined.
For brick or similar structures, a stainless steel rigid
or exible ue liner (Grade 304/316) may be used in
conjunction with a 50 mm (minimum) thick layer or
2m
2m
2m