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Gas Association and Canadian Gas Association) as
complying with the latest edition of the Standard for
Gas-Fired Pool Heaters, ANSI Z21.56, and in Canada
with CAN1-4.7-M85.
Certain sections of this manual are specific to
either United States or Canadian installations, and are
labeled as such.
1B. Description
The Laars Lite LLD heater gets electrical power
from an external 120V / 240V (volt AC) source and
provides a dual thermostat Flex-Temp control system
for pool/spa combinations or pre-heat convenience.
The Laars Lite LLD heater also meets the California,
New York, Hawaii, and Oregon state energy require-
ments for intermittent ignition gas appliances. The
Laars Lite LLG heater is a self contained standing
pilot unit and requires no external power.
The Laars Lite heater is specifically designed for
heating swimming pools and spas. Do not use it as a
general service water heater or for heating salt water
pools. Consult your dealer for the appropriate Tele-
dyne Laars products for these applications.
1C. Warranty
The Laars Lite heater is sold with a limited
factory warranty. Details are specified on the back
cover of this manual. A copy of the warranty and a
warranty registration card are included in the plastic
bag shipped with the heater. Fill out and return the
warranty registration card.
Make all warranty claims to an authorized
Teledyne Laars representative or directly to the fac-
tory. Claims must include the heater serial number and
model (this information can be found on the rating
plate), installation date, and name of the installer.
Shipping costs are not included in the warranty cover-
age.
Damage caused by improper installation or
assembly, or to the heat exchanger by corrosive water,
is NOT covered by the Warranty. See Section 3D for
maintaining proper pool water chemistry.
NOTE: Keep this manual in a safe place for
future reference when inspecting or servicing the
heater.
1D. Technical Assistance
Consult Teledyne Laars or your local distributor
with any questions or problems involving the specifica-
tions, installation, and operation of your Teledyne
Laars equipment. An experienced technical support
staff is ready to assist in assuring the proper perfor-
mance and application of Teledyne Laars products.
SECTION 2.
Installation Instructions
2A. General Information
Install the Laars Lite heaters in accordance with
the procedures in this manual, local codes and ordi-
nances, and in accordance with the latest edition of the
National Fuel Gas Code, ANSI Z223.1. In Canada, the
installation must be in accordance with CAN1-B149.1
or .2 and local codes. The authority having jurisdiction
may require the installation conform to the Standard
for Gas-Fired Heaters, ANSI Z21.56. Any changes to
the heater, gas controls, gas orifices, wiring, draft
diverter, or improper installation may void the war-
ranty. If field conditions require change to any of the
above, consult the factory.
All gas-fired products require correct installation
to assure safe operation. The requirements for pool
heaters include the following:
1. Field assembly (if required)
2. Appropriate site location (clearances) and
flooring
3. Sufficient combustion and ventilation air
4. Properly sized gas meter and piping
5. Proper electrical wiring (if required)
6. Adequate water flow
This manual provides the information needed to
meet these requirements. Review all application and
installation procedures completely before continuing
the installation.
2B. Field Assembly
The Laars Lite heater is shipped from the factory
with the top assembly in the low-profile configuration
for outdoor installation in the U.S. The Laars Lite
heater is design certified for indoor installation when
equipped with a drafthood, which must be installed
without modification.
The Laars Lite heater is also certified for installa-
tion in an outdoor shelter in Canada when equipped
with a drafthood. An outdoor shelter is an enclosure
not normally occupied which does not communicate
directly with occupied areas.
Check the rating plate on the heater for the
correct Teledyne Laars part number. See instructions
supplied with the drafthood for installation and attach-
ment. When the draft hood is used, locate the heater so
as to be in the same atmospheric pressure zone as the
combustion air inlet to the heater.
If a drafthood is used, it must be connected to a
vent pipe which stops at least 2 feet (0.61 meters [m])
above the highest point of the roof or other object that
is within 10 feet (3.05 m) from the vent termination.
The vent pipe must have a listed vent cap which allows
a full equivalent opening for flue products (see Figure
2).