Rheem 96P series Installation Instructions Manual page 104

The importance of proper air flow over the heat exchanger
cannot be over emphasized.
IT IS IMPORTANT THAT EACH DUCT SYSTEM BE
SIZED AND INSTALLED FOR THE SPECIFIC APPLICA-
TION BY PROPERLY APPLYING THE APPROPRIATE
INDUSTRY ACCEPTED STANDARD. IF LESS THAN
MINIMUM STANDARDS ARE APPLIED, THE EQUIP-
MENT USER COULD EXPECT TO EXPERIENCE
HIGHER UTILITY BILLS, MAJOR COMPONENT FAIL-
URE, VARYING DEGREES OF AIR NOISE OR OTHER
UNSATISFACTORY ISSUES, OVER WHICH THE MANU-
FACTURER HAS NO CONTROL.
TEMPERATURE RISE CHECK
To determine if the air flow is correct, make a temperature
rise check.
1. Insert a thermometer in the supply air duct as close to
the furnace as possible yet out of a direct line from the
heat exchanger. See Figure 49.
2. Insert a thermometer in the return air duct as close to
the furnace as possible.
3. Operate the furnace for a minimum of 15 minutes in
gas heat mode.
4. When the thermometer in the supply air duct stops ris-
ing (approximately five minutes), subtract the return air
temperature from the supply air temperature. The dif-
ference is the temperature rise.
5. Compare the measured temperature rise to the ap-
proved temperature rise range listed on the furnace
name plate. See Figure 50.
FIGURE 49
TEMPERATURE RISE MEASUREMENT
104
If the measured temperature rise is above the approved
range, the air flow is too low. Airflow must be increased by
speeding up the blower, by removing restrictions in the
duct system, or by adding more supply or return air duct. If
the measured temperature rise is below the approved
range, the air flow is too much. Use lower speed tap on the
multi-speed blower.
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°F (4.5°-21°C), THE MIDDLE OF THE RISE RANGE
IS 55°F (12.8°C). IN ALL APPLICATIONS, THE INSTALLER
MUST ADJUST THE TEMPERATURE RISE TO THIS "MID-
DLE" 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 IN-
TERMITTENT OPERATION. THIS COULD CAUSE INJURY
OR DEATH AND WILL VOID THE MANUFACTURER'S
WARRANTY FOR THIS PRODUCT.
FIGURE 50
TYPICAL FURNACE NAME PLATE
RHEEM SALES COMPANY, INC.
FORT SMITH, ARKANSAS
MODEL NO./NUMERO DE MODELE: R96PA0702317MSA
SERIAL NO./ NUMERO DE SERIE: W0000100001
CATEGORY IV FORCED AIR FURNACE WHEN USING INDOOR AIR FOR COMBUSTION
CATEGORY I V TYP FSP DIRECT VENT FORCED AIR FURNACE WHEN USING OUTDOOR AIR FOR COMBUSTION.
FOR INDOOR INSTALLATION ONLY, IN A BUILDING CONSTRUCTED ON-SITE.
CATÉGORIE IV GÉNÉRATEUR D'AIR CHAUD Á AIR FORCÉE LORSOUE DE L'AIR INTÉRIEUR EST EMPLOYÉ
POUR LA COMBUSTION. CATÉGORIE IV TYPE FSP ÉVACUATION DIRECTE GÉNÉRATEUR D'AIR CHAUD À
AIR FORCÉE LORSOUE DE L'AIR EXTÉRIEUR EST EMPLOYÉ POUR LA COMBUSTION. POUR INSTALLATION
À L'INTÉREIER SEULEMENT, DANS UN BATIMENT CONSTRUIT SUR LE SITE.
ELECTRIC 115 V. 60 HZ. 1 PH, MIN. CIRCUIT AMPACITY ____AMPS, IB MOTOR FLA__, ID MOTOR FLA___
ELECTRIQUE 115V. 60 HZ 1 PH, COURANT MINIMAL ADMISSIBLE DE CIRCUIT ___A. INTENSITÉ MAXIMAL DE ___
MOTEUR DE SOUFFLANTE INTÉRIEURE ET___ MOTEUR DE TIRANGE INDUIT.
MAXIMUM OVERCURRENT PROTECTION DEVICE ___AMPERES. DISPOSITIF DE PROTECTION CONTRE UNE
SURINTENSITE DE ___A AU MAXIMUM.
NOx EMISSION LIMIT (NANOGRAMS.JOULE) ___. LIMITE D'ÉMISSION D'OXYDES D'AZOTE (NOx) EN
NANORAMMES PAR JOULE ___.
HOURLY INPUT RATING HOURLY INPUT RATING
DEBIT CALORIFQUE DEBIT CALORIFQUE
MAXIMUM MINIMUM
Btu/hr (Kw) Btu/hr (Kw)
75,000 (21.98)
IN THE U.S. AND CANADA, AT ELEVATIONS ABOVE 2,000 FT. (610M), DERATE THE INPUT 2% PER 1,000 FT. (305M)
ABOVE SEA LEVEL. REFER TO INSTALLATION INSTRUCTIONS FOR PROPER ALTITUDE ADJUSTMENT.
AUX ÉTATS-UNIS ET AU CANADA, À DES ALTITUDES SUPÉRIEURES À 610M(2,000PI), IL FAUT APPLIQUER UNE PUERTE
DE 2% PAR TRANCHE DE 305M(1,000PI) AU-DESSUS DU NIVEAU DE LA MER. SE REPORTER AUX INSTRUCTIONS DE
MONTAGE POUR PROCÉDER AUX RÉGLAGES DUS À L'ALTITUDE.
ORIFICE / INJECTEUR 51 DMS
LIMIT SETTING / LIMITE COUPE-CIRCUIT 120° (49°) °F(°C)
AUXILIARY LIMIT SETTING/
LIMITE COUPE-CIRCUIT COUPE-CIRCUIT AUXILIAIRE
MAXIMUM PERMISSIBLE GAS SUPPLY PRESSURE TO FURNACE
PRESSION MAXIMUM D'ALIMENTATION EN GAZ À CHAUDIÈRE
MINIMUM GAS SUPPLY PRESSURE FOR PURPOSES OF INPUT ADJUSTMENT
PRESSION MINIMUM D'ALIMENTATION EN GAZ POUR LE
RÈGLAGE DE PUISSANCE D'ENTRÉE
MANIFOLD PRESSURE /PRESSION A LA TUBULURE
AIR TEMPERATURE RISE/
AUGMENTATIONDE LA TEMPÉATUREDE L'AIR 40°(22°) - 70°(39°)°F (°C)
MAXIMUM EXTERNAL STATIC PRESSURE
PRESSION STATIQUE EXTÉRIEURE MAXIMAL
INCHES W.C. (kPa)-PO. C.E. (kPa)
.15 (.038)
1.00 (.249)
ASSEMBLED IN MEXICO
CANADIAN ENERGY
PERFORMANCE
VERIFIED
RENDEMENT
ENEGETIQUE
VERIFIE
MFG. DATE SEE DATE NOTE
CONTROL SYSTEM JC
FACTORY EQUIPPED FOR
AGENCE A L'USINE POUR
FOR GAS / GAZ
NATURAL / NATUREL
NATURAL GAS/ LP GAS OR PROP/
GAZ NATUREL GAZ DE PÉTROLE
LIQUÉFIÉ OU PROP.
IN. W.C.(kPa)/ IN. W.C.(kPa)/
°F(°C)
PO. C.E. (kPa) PO. C.E. (kPa)
10.5 (2.61) 13.0 (3.23)
10.5 (2.61) 13.0 (3.23)
5.0 (1.24) 11.0 (2.73)
5.0 (1.24) 11.0 (2.73)
3.5 (0.87) 10.0 (2.49)
91-22176-11
ST-A1194-97-00