LAARS CF-100-3 User Manual

Installation and Operation Instructions Document 1 1037

A SPANISH LANGUAGE VERSION OF THESE INSTRUCTIONS IS AVAILABLE

BY CONTACTING THE COMPANY LISTED ON THE RATING PLATE.

TM

LAARS® Multi-Flue

Commercial Energy Saver Oil-Powered Water Heater

Models CF-38-3, CF-80-3, CF-100-3

LA VERSION ESPANOLA DE ESTAS INSTRUCCIONES SE PUEDA OBTENER AL
ESCRIBIRLE A LA FABRICA CUYO NOMBRE APPRECE EN LA PLACA DE
ESPECIFICACIONES.

WARNING: IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT
FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING
PROPERTY DAMAGE, PERSONAL INJURY OR DEATH

WARNING:

Do not store or use gasoline or other flammable vapors, liquids or materials

in the vicinity of this or any other appliance

WARNING:

Improper installation, adjustment, alteration, service or maintenance can result
in injury or property damage. For assistance or additional information, please
contact the plumbing professional who installed this water heater.
Notice To The Installer: Before connecting this appliance, please read these
instructions carefully, we call your attention to all items, specifically the
instructions on locating the water heater.
Notice To The User: Before operating this appliance, please read these
instructions thoroughly. Then please refer to this manual for future reference.

WARNING:

Be aware that this water heater is capable of producing hot water at a

temperature high enough to cause scalding injury. Water temperature over

125°F can cause severe burns or death from scalds. Please read these

instructions carefully before operating this unit.

800.900.9276 • Fax [phone] (Customer Service, Service Advisors)

20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax [phone]
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax [phone]

www.Laars.com Litho in U.S.A. © Laars Heating Systems 0806 Document 11037

TABLE OF CONTENTS

General Information.................................................................................. 3

Installation ................................................................................................. 3

Locating the water heater.................................................................. 3

Minimum clearances .......................................................................... 3

Combustion air supply....................................................................... 4

Electrical connections........................................................................ 5

Venting................................................................................................. 6

Water connections.............................................................................. 6

Installation for potable water and space heating .................................. 8

Oil tanks and piping.................................................................................. 9

Operation ...................................................................................................10

Burner and thermostat information ........................................................11

Maintenance...............................................................................................15

CONGRATULATIONS!

You have just purchased one of the finest water heaters on the
market today!

This installation, operation and instruction manual will explain in
detail the installation and maintenance of your new Oil-Fired Water
Heater. We strongly recommend that you contact a plumbing
professional for the installation of this water heater.

We require that you carefully read this manual, as well as the
enclosed warranty, and refer to it when questions arise. If you have
any specific questions concerning your warranty, please consult the
plumbing professional from whom your water heater was
purchased. For your records we recommend that you write the
model, serial number and installation date of your water heater in the
maintenance section in the back of this manual.

This manual should be kept with the water heater.

2

General Information

Note: It is recommended that the installation and service of this water heater be

performed by a plumbing professional.
This water heater must be installed in accordance with local codes. In the absence of

local codes, it must be installed in compliance with the National Fire Protection
Standard For Oil Burning Equipment NFPA No. 31 (latest edition). In Canada the
installation of this water heater shall be in accordance with the regulation of authorities
having jurisdiction and CSA STANDARD B139.

The warranty of this water heater is in effect only when the water heater is installed,
adjusted, and operated in accordance with these installation and operating instructions.

DO NOT use this appliance if any part has been submerged in water. You should
contact the plumbing professional who installed the water heater to inspect the
appliance and to replace any part of the control system and any component which has
been submerged in water.

A sacrificial anode is used to extend tank life. The removal of this anode, for any
reason, will nullify the warranty. In areas where water is unusually reactive, an odor
may occur at the hot water faucet due to a reaction between the sacrificial anode and
the impurities in the water. If this should happen, an alternative anode may be
purchased from the supplier that sold you this water heater. This will minimize the odor
while protecting the tank. Additionally, the water heater should be flushed with
appropriate dissolvers to eliminate any bacteria.

INSTALLATION

Locating the water heater

The location of this water heater is of the utmost importance. Before installing the water
heater, you should select a location where the floor is level and is easily accessible to
water supply lines as well as to a chimney or vent. DO NOT locate the water heater
where water lines could be subjected to freezing temperatures.

This water heater MUST be installed indoors out of the wind and weather.
Note: For California installation this water heater must be braced, anchored, or

strapped to avoid falling or moving during an earthquake. See instructions for
correct installation procedures. Instructions may be obtained from California
Office of the State Architect, 400 P Street, Sacramento, CA 95814.

Minimum Clearances

This water heater shall be installed on NON-COMBUSTIBLE flooring only. This water
heater may be installed in an alcove. Refer to the marking on the front of the water
heater for clearances to combustible materials.

The installation should allow access to the front of the water heater and adequate
clearance should be provided for servicing and operating the water heater. It is
recommended that a minimum clearance of 3” be provided on the side of the water
heater for servicing and maintenance of the temperature and pressure relief valve.

3

Installation (locating the water heater) continued-

This water heater must be located in an area where leakage of the tank or water line
connections will not result in damage to the area adjacent to the water heater or to
lower floors of the structure. When such locations cannot be avoided, a suitable drip
pan must be installed under the water heater. The drain pan must have a minimum
length and width of at least 4 in. (10.2 cm) greater than the diameter of the water
heater and must not restrict proper combustion air flow to the water heater. The drain
pan, as described above, can be purchased from your plumbing professional. The
piping must be at least ¾” in diameter and pitched for proper drainage. The pan must
not restrict the combustion airflow.

WARNING
Water heaters are heat-producing appliances. To avoid damage or injury,
there shall be no materials stored against the water heater. Proper care shall
be taken to avoid unnecessary contact (especially by children) with the water
heater. UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS,
SUCH AS GASOLINE OR PAINT THINNER, BE USED OR STORED IN THE
VICINITY OF THIS WATER HEATER OR IN ANY LOCATION FROM WHICH
FUMES COULD REACH THE WATER HEATER.

Note: The failure to adhere to these instructions may create a hazard to life
and property and will nullify the warranty.
Water heater corrosion and component failure can be caused by heating and
breakdown of airborne chemical vapors. Examples of typical compounds that
are potentially corrosive are: spray can propellants, cleaning solvents,
refrigeration and air conditioning refrigerants, swimming pool chemicals,
calcium and sodium chloride, waxes and process chemicals. These materials
are corrosive at very low concentration levels with little or no odor to reveal
their presence.

NOTE: DAMAGE TO THE WATER HEATER CAUSED BY EXPOSURE TO
CORROSIVE VAPORS IS NOT COVERED BY WARRANTY.

IMPORTANT!!

THE FLOW OF COMBUSTION AND VENTILATING AIR MUST NOT BE

OBSTRUCTED!!

Combustion Air Supply

Installation of this water heater requires that provisions be made to supply
adequate air for combustion and ventilation. If the building is unusually tight
or if this water heater is installed in a small room, provisions for additional
makeup air must be provided. This air must be supplied through two
permanent openings located so that the lower edge of the lower opening is 6
inches below the top of the enclosure.
The minimum free air area for such openings shall not be less than one
square inch per 1000 BTU/HR of the total input rating of all appliances in that
enclosure of 100 square inches, whichever is greater. For outside air, in the
absence of local codes, refer to the National Fire Protection Standard For Oil
Burning Equipment NFPA No. 31 (latest edition).

4

Electrical Connections

This water heater is normally wired for 120 volts and shall be electrically
grounded in accordance with local codes, or in the absence of local codes,
with the National Electrical Code, ANSI/NFPA No. 70 (latest Edition).

If any of the original wiring must be replaced, replacement shall be with 105
degree C wire or equivalent.

Figure 1

5