Lochinvar CG200 User Manual

INSTALLATION INSTRUCTIONS

REQUIRED ABILITY

INSTALLATION OR SERVICE OF THIS WATER HEATER

REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED

TRADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR SUPPLY,

VENTING, GAS SUPPLY AND ELECTRICAL WORK ARE REQUIRED.

WARNING

FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT

IN SERIOUS PERSONAL INJURY OR DEATH.

UNCRATING

The heater is shipped with the inducer already installed. The wiring

conduit runs from the thermostat to the inducer. Before turning unit on,

check to make sure wiring conduit is securely plugged into the inducer.

LOCATING THE HEATER

WARNING

THERE IS A RISK IN USING FUEL BURNING APPLIANCES SUCH

AS GAS WATER HEATERS IN ROOMS, GARAGES OR OTHER

AREAS WHERE GASOLINE, OTHER FLAMMABLE LIQUIDS OR

ENGINE DRIVEN EQUIPMENT OR VEHICLES ARE STORED,

OPERATED OR REPAIRED. FLAMMABLE VAPORS ARE HEAVY

AND TRAVEL ALONG THE FLOOR AND MAY BE IGNITED BY THE

HEATER’S PILOT OR MAIN BURNER FLAMES CAUSING FIRE

OR EXPLOSION. SOME LOCAL CODES PERMIT OPERATION OF

GAS APPLIANCES IN SUCH AREAS IF THEY ARE INSTALLED

18” OR MORE ABOVE THE FLOOR. THIS MAY REDUCE THE

RISK IF LOCATION IN SUCH AN AREA CANNOT BE AVOIDED.
DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A

CARPETED FLOOR. A FIRE HAZARD MAY RESULT. Instead the

water heater must be placed on a metal or wood panel extending

beyond the full width and depth by at least 3 inches in any direction.

If the heater is installed in a carpeted alcove, the entire floor shall

be covered by the panel. Also, see the DRAINING requirements

in MAINTENANCE Section.
THE HEATER SHALL BE LOCATED OR PROTECTED SO IT IS

NOT SUBJECT TO PHYSICAL DAMAGE BY A MOVING VEHICLE.

WARNING

FLAMMABLE ITEMS, PRESSURIZED CONTAINERS OR ANY

OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST

NEVER BE PLACED ON OR ADJACENT TO THE HEATER. OPEN

CONTAINERS OR FLAMMABLE MATERIAL SHOULD NOT BE

STORED OR USED IN THE SAME ROOM WITH THE HEATER.
When installing the heater, consideration must be given to

proper location. Location selected should be as close to the

stack or chimney as practicable, with adequate air supply and as

centralized with the piping system as possible.

THE HEATER MUST NOT BE LOCATED IN AN AREA WHERE

IT WILL BE SUBJECT TO FREEZING.
LOCATE IT NEAR A FLOOR DRAIN. THE HEATER SHOULD BE

LOCATED IN AN AREA WHERE LEAKAGE FROM THE HEATER

OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO THE

ADJACENT AREA OR TO LOWER FLOORS OF THE STRUCTURE.

WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE

DRAIN PAN SHOULD BE INSTALLED UNDER THE HEATER.

Such

pans should be fabricated with sides at least 2” deep, with length and

width at least 2” greater than the diameter of the heater and must be

piped to an adequate drain. The pan must not restrict combustion air flow.
For appliance installation locations with elevations above

2000 feet (610m), refer to HIGH ALTITUDE INSTALLATIONS

section of this manual for input reduction procedure.

LEVELING

If the unit is not level, insert the bolts which were used in crating

into the legs to correct this condition.

CLEARANCES

These heaters are approved for installation on combustible flooring

in an alcove when the minimum clearance from any combustion

construction are followed as indicated in figure 6.
In all installations the minimum combustible clearances from vent

piping shall be 6”. Vent piping passing through a combustible wall

or ceiling must be a continuous run (no joints) and retain the 6”

clearance unless an approved reducing thimble is used.
A service clearance of 24” should be maintained from serviceable

parts, such as relief valves, flue baffles, thermostats, cleanout

openings or drain valves.
The units are approved for installation with side, rear and ceiling

clearances.

HARD WATER

Where hard water conditions exist, water softening or threshold type

of water treatment is recommended. This will protect dishwashers,

coffee urns, water heaters, water piping and other equipment.
See MAINTENANCE section for details of tank cleanout procedure.

CLOSED WATER SYSTEMS

Water supply systems may, because of code requirements

or such conditions as high line pressure, among others, have

installed devices such as pressure reducing valves, check

valves, and back flow preventers. Devices such as these cause

the water system to be a closed system.

THERMAL EXPANSION

As water is heated, it expands (thermal expansion). In a closed

system the volume of water will grow when it is heated. As the

volume of water grows there will be a corresponding increase

in water pressure due to thermal expansion. Thermal expansion

can cause premature tank failure (leakage). This type of failure

is not covered under the limited warranty. Thermal expansion

can also cause intermittent Temperature-Pressure Relief Valve

operation: water discharged from the valve due to excessive

pressure build up. This condition is not covered under the limited

warranty. The Temperature-Pressure Relief Valve is not intended

for the constant relief of thermal expansion.
A properly sized thermal expansion tank must be installed on

all closed systems to control the harmful effects of thermal

expansion. Contact a local plumbing service agency to have a

thermal expansion tank installed.

AIR REQUIREMENTS

REFER TO THE LATEST EDITION OF THE “NATIONAL FUEL

GAS CODE” ANSI Z223.1/NFPA 54.
KEEP APPLIANCE AREA CLEAR AND FREE OF COMBUSTIBLE

MATERIALS, GASOLINE AND OTHER FLAMMABLES,

VAPORS AND LIQUIDS.
DO NOT OBSTRUCT THE FLOW OF COMBUSTION OR

VENTILATING AIR.

WARNING

FOR SAFE OPERATION PROVIDE ADEQUATE AIR FOR

COMBUSTION AND VENTILATION. AN INSUFFICIENT SUPPLY

OF AIR WILL CAUSE RECIRCULATION OF COMBUSTION

PRODUCTS RESULTING IN AIR CONTAMINATION THAT

MAY BE HAZARDOUS TO LIFE. SUCH A CONDITION OFTEN

WILL RESULT IN A YELLOW, LUMINOUS BURNER FLAME,