Rheem GF901U Series Installation Instructions Manual page 8

CAUTION
ELEVATIONS ABOVE 2000 FT
REQUIRE THAT THE FURNACE
INPUT RATING BE ADJUSTED
AND THAT THE SIZE OF THE
BURNER ORIFICES BE RE-
CALCULATED BASED ON
ELEVATION AND GAS HEATING
VALUE. THE BURNER ORIFICES
MAY (OR MAY NOT) NEED TO BE
CHANGED. SEE THE SECTION
TITLED "HIGH ALTITUDE
INSTALLATIONS" OF THIS BOOK
FOR INSTRUCTIONS.
WARNING
TURN OFF ELECTRIC POWER AT
FUSE BOX OR SERVICE PANEL
BEFORE MAKING ANY
ELECTRICAL CONNECTIONS.
FAILURE TO DO SO CAN CAUSE
ELECTRICAL SHOCK RESULTING
IN PERSONAL INJURY OR DEATH.
WARNING
THE CABINET MUST HAVE AN
UNINTERRUPTED GROUND
ACCORDING TO THE LATEST
EDITION OF THE NATIONAL
ELECTRICAL CODE, ANSI/
NFPA70- OR IN CANADA, THE
CANADIAN ELECTRICAL CODE,
CSA-C221 OR LOCAL CODES
THAT APPLY. DO NOT USE GAS
PIPING AS AN ELECTRICAL
GROUND. A GROUND SCREW IS
PROVIDED IN THE JUNCTION
BOX. FAILURE TO DO SO CAN
CAUSE ELECTRICAL SHOCK
RESULTING IN PERSONAL
INJURY OR DEATH.
WARNING
THIS FURNACE IS EQUIPPED
WITH A BLOWER DOOR SAFETY
SWITCH. DO NOT DISABLE THIS
SWITCH. FAILURE TO FOLLOW
THIS WARNING CAN RESULT IN
ELECTRICAL SHOCK, PERSONAL
INJURY OR DEATH.
CAUTION
INSTALLATION OF THIS FURNACE
AT ALTITUDES ABOVE 2000 FT
(610 m) SHALL BE IN
ACCORDANCE WITH LOCAL
CODES, OR IN THE ABSENCE OF
LOCAL CODES, THE NATIONAL
FUEL GAS CODE, ANSI
Z223.1/NFPA 54 OR NATIONAL
STANDARD OF CANADA,
NATURAL GAS AND PROPANE
INSTALLATION CODE, CAN
B149.1.
INSTALLATION OF THIS
APPLIANCE AT OR ABOVE 5000
FT (1525 M) SHALL BE MADE IN
ACCORDANCE WITH THE LISTED
HIGH ALTITUDE CONVERSION KIT
AVAILABLE WITH THIS FURNACE.
8
CAUTION
ELEVATIONS ABOVE 2000 FT
REQUIRE THAT THE FURNACE
INPUT RATING BE ADJUSTED
AND THAT THE SIZE OF THE
BURNER ORIFICES BE RE-
CALCULATED BASED ON
ELEVATION AND GAS HEATING
VALUE. THE BURNER ORIFICES
MAY (OR MAY NOT) NEED TO BE
CHANGED. THE FOLLOWING
EXAMPLES SHOW HOW TO
DETERMINE IF AN ORIFICE
CHANGE WILL BE NECESSARY
AND HOW TO DETERMINE THE
NEW ORIFICE SIZE.
IN CANADA, AS AN ALTERNATE
TO ADJUSTING THE BURNER
ORIFICE SIZE, THE MANIFOLD
GAS PRESSURE MAY BE
ADJUSTED. THIS METHOD IS
COVERED LATER IN THIS
SECTION. THIS METHOD OF
ADJUSTING MANIFOLD
PRESSURE MAY ONLY BE USED
IN CANADIAN INSTALLATIONS.
WARNING
SHOULD OVERHEATING OCCUR
OR THE GAS SUPPLY FAIL TO
SHUT OFF, CLOSE THE MANUAL
GAS VALVE FOR THE APPLIANCE
BEFORE SHUTTING OFF THE
ELECTRICAL SUPPLY. FAILURE
TO DO SO CAN CAUSE AN
EXPLOSION OR FIRE RESULTING
IN PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH.
CAUTION
IT IS IMPORTANT THAT EACH
DUCT SYSTEM BE SIZED AND
INSTALLED FOR THE SPECIFIC
APPLICATION BY PROPERLY
APPLYING THE APPROPRIATE
INDUSTRY ACCEPTED
STANDARD. IF LESS THAN
MINIMUM STANDARDS ARE
APPLIED, THE EQUIPMENT USER
COULD EXPECT TO EXPERIENCE
HIGHER UTILITY BILLS, MAJOR
COMPONENT FAILURE, VARYING
DEGREES OF AIR NOISE OR
OTHER UNSATISFACTORY
ISSUES, OVER WHICH THE
MANUFACTURER HAS NO
CONTROL.
CAUTION
DO NOT OPERATE THE SYSTEM
FOR EXTENDED PERIODS
WITHOUT FILTERS. A PORTION OF
THE DUST ENTRAINED IN THE AIR
MAY TEMPORARILY LODGE IN
THE AIR DUCT RUNS AND AT THE
SUPPLY REGISTERS. ANY
RECIRCULATED DUST PARTICLES
WILL BE HEATED AND CHARRED
BY CONTACT WITH THE FURNACE
HEAT EXCHANGER. THIS RESIDUE
WILL SOIL CEILINGS, WALLS,
DRAPES, CARPETS AND OTHER
HOUSEHOLD ARTICLES.
WARNING
THE MEASURED TEMPERATURE
RISE SHOULD BE AS CLOSE TO
THE MIDDLE OF THE STATED
RANGE AS POSSIBLE. FOR
EXAMPLE, IF THE RISE RANGE IS
40 TO 70 DEGREES, THE MOST
IDEAL RISE WOULD BE 55
DEGREES (THE MIDDLE OF THE
RISE RANGE). IN ALL
APPLICATIONS, THE INSTALLER
MUST ADJUST THE
TEMPERATURE RISE TO THIS
"MIDDLE" POINT AS CLOSELY AS
POSSIBLE. ALSO, THE
TEMPERATURE RISE SHOULD
NEVER BE ABOVE OR FALL
BELOW THE STATED RANGE.
DOING SO COULD CAUSE
DAMAGE TO THE HEAT
EXCHANGER OR INTERMITTENT
OPERATION WHICH COULD CAUSE
INJURY OR DEATH AND WILL VOID
THE MANUFACTURER'S
WARRANTY FOR THIS PRODUCT.
WARNING
DISCONNECT THE ELECTRICAL
SUPPLY TO THE FURNACE
BEFORE ATTEMPTING TO
CHANGE THE BLOWER SPEED.
FAILURE TO DO SO CAN CAUSE
ELECTRICAL SHOCK RESULTING
IN PERSONAL INJURY OR DEATH.
WARNING
THESE INSTRUCTIONS ARE
INTENDED AS AN AID TO
QUALIFIED SERVICE
PERSONNEL FOR PROPER
INSTALLATION, ADJUSTMENT
AND OPERATION OF THIS UNIT.
READ THESE INSTRUCTIONS
THOROUGHLY BEFORE
ATTEMPTING INSTALLATION OR
OPERATION. FAILURE TO
FOLLOW THESE INSTRUCTIONS
MAY RESULT IN IMPROPER
INSTALLATION, ADJUSTMENT,
SERVICE OR MAINTENANCE,
POSSIBLY RESULTING IN FIRE,
ELECTRICAL SHOCK, CARBON
MONOXIDE POISONING,
EXPLOSION, PROPERTY
DAMAGE, PERSONAL INJURY
OR DEATH.
DISCONNECT MAIN ELECTRICAL
POWER TO THE UNIT BEFORE
ATTEMPTING ANY MAINTE-
NANCE. FAILURE TO DO SO CAN
CAUSE ELECTRICAL SHOCK
RESULTING IN PERSONAL INJURY
OR DEATH.
WARNING
HOLES IN THE VENT PIPE OR
HEAT EXCHANGER CAN CAUSE
TOXIC FUMES TO ENTER THE
HOME, RESULTING IN CARBON
MONOXIDE POISONING OR
DEATH. THE VENT PIPE OR HEAT
EXCHANGER MUST BE
REPLACED IF THEY LEAK.