Bryant PO8UAA Installation Manual

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Upflow/Horizontal

Oil-Fired Furnace

Sizes 075 thru 210

NOTE: Read the entire instruction manual before starting the installation.

SAFETY CONSIDERATIONS.....................................................................................................................................................................................2

INTRODUCTION..........................................................................................................................................................................................................2

LOCATION ...................................................................................................................................................................................................................3

INSTALLATION...........................................................................................................................................................................................................5

VENTING.................................................................................................................................................................................................................5

INSTALLATION OF FLUE ELBOW ON 075-155 SIZE UNITS.......................................................................................................................5

PRE-INSTALLATION VENT SYSTEM INSPECTION.......................................................................................................................................5

MASONRY CHIMNEY ..........................................................................................................................................................................................5

FACTORY-BUILT CHIMNEYS ............................................................................................................................................................................6

HORIZONTAL VENTING......................................................................................................................................................................................6

OIL BURNER ..........................................................................................................................................................................................................6

OIL CONNECTIONS ..............................................................................................................................................................................................6

BAROMETRIC DRAFT CONTROL......................................................................................................................................................................6

ELECTRICAL ..........................................................................................................................................................................................................6

FILTERS...................................................................................................................................................................................................................7

CHANGING FROM UPFLOW TO HORIZONTAL.............................................................................................................................................9

OPERATIONAL CHECKOUT.....................................................................................................................................................................................9

START-UP ...............................................................................................................................................................................................................9

RECOMMENDED INSTALLATION PRACTICES AND COMBUSTION CHECK .........................................................................................9

FAN ADJUSTMENT CHECK ..............................................................................................................................................................................10

LIMIT CONTROL CHECK ..................................................................................................................................................................................10

FOR YEAR-ROUND AIR CONDITIONING ......................................................................................................................................................10

HEATING...............................................................................................................................................................................................................10

COOLING ..............................................................................................................................................................................................................10

CONSTANT BLOWER SWITCH ........................................................................................................................................................................10

CARE AND MAINTENANCE ..................................................................................................................................................................................11

GENERAL..............................................................................................................................................................................................................11

HEAT EXCHANGER AND FLUE PIPE.............................................................................................................................................................11

BLOWER OILING AND REMOVAL .................................................................................................................................................................14

KEEPING FILTERS CLEAN................................................................................................................................................................................15

Form: IM-PO8U-03

Installation Manual

Cancels: NEW

Printed in U.S.A.

ama

7-00

PO8UAA

Catalog No. 63PO-8U0

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Summary of Contents for Bryant PO8UAA

Page 1: Table Of Contents
Installation Manual Upflow/Horizontal PO8UAA Oil-Fired Furnace Sizes 075 thru 210 NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS SAFETY CONSIDERATIONS.....................................2 INTRODUCTION..........................................2 LOCATION ...........................................3 INSTALLATION...........................................5 VENTING..........................................5 INSTALLATION OF FLUE ELBOW ON 075–155 SIZE UNITS........................5 PRE-INSTALLATION VENT SYSTEM INSPECTION............................5 MASONRY CHIMNEY ......................................5...
Page 2: Safety Considerations
SAFETY CONSIDERATIONS WARNING: FOR YOUR SAFETY, DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE DO NOT ATTEMPT TO START THE BURNER WHEN EXCESS OIL HAS ACCUMULATED, WHEN THE FURNACE IS FULL OF VAPOR, OR WHEN THE COMBUSTION CHAMBER IS VERY HOT.
Page 3: Location
LOCATION WARNING: This furnace is not water tight and is not designed for outdoor installation. This furnace shall be installed in such a manner as to protect electrical components from water. Outdoor installation would lead to a hazardous electrical condition and to premature furnace failure. WARNING: Do not use this furnace as a construction heater.
Page 4 For a confined space, where air is taken from an interior space, 2 permanent openings of equal area are required. One opening must be within 12 in. of ceiling and the other within 12 in. of floor. Each opening must have a free area of at least 1 sq. in. per 1000 Btuh of total input rating but not less than 100 sq.
Page 5: Installation
1. In series airflow applications, coil is mounted after furnace in an enclosure in supply-air stream. The furnace blower is used for both heating and cooling airflow. WARNING: The coil MUST be installed on air discharge side of furnace. Under no circumstances should airflow be such that cooled, conditioned air can pass over furnace heat exchanger.
Page 6: Factory-Built Chimneys
7. Seams should be tightly joined and checked for leaks. 8. The flue pipe must not extend into chimney but be flush with the inside wall. 9. The chimney must extend 3 ft. above highest point where it passes through the roof of a building and at least 2 ft. higher than any portion of a building within a horizontal distance of 10 ft.
Page 7 Metallic conduit (where required/used) may terminate at side panel of unit. It is not necessary to extend conduit inside unit from side panel to control box. When replacing any original furnace wiring, use only 105°C no. 16 AWG copper wire. Instructions for wiring thermostat (field supplied) are packed in thermostat box.
Page 8: Filters
REAR OF FURNACE LANCED CLIP KNOCKOUT IN FILTER FILTER RACK SIDE PANEL RACK ACCESS PANEL ″ ⁄ SCREW RETURN AIR DUCT 3 ⁄ 4 -IN. FLANGE SEE DETAIL FILTER REAR PANEL ACCESS PANEL ACCESS PANEL ″ ⁄ SIDE PANEL BOTTOM DUCT OUTLET FILTER...
Page 9: Changing From Upflow To Horizontal
PROCEDURE 12—CHANGING FROM UPFLOW TO HORIZONTAL 1. Remove burner from unit by removing 3 burner mounting nuts. Prevent putting undue strain on burner wiring. It may be necessary to disconnect burner wiring in some cases. 2. Note that the 3 burner mounding studs are in the 9, 12, and 3 o’clock positions on burner mounting plate (see Fig. 2, A.). A95172 Fig.
Page 10: Fan Adjustment Check
5. The CO and stack temperature instruments enable you to obtain data required to determine thermal efficiency of furnace. 6. An oil filter should be installed as close to burner as possible with ALL oil burners and is essential on lowing firing rate burners. The use of a low pressure drop oil filter such as General Filter, Inc.
Page 11: Care And Maintenance
60 Sec 90 Sec 120 Sec 150 Sec DELAY OFF DIP SWITCH SETTINGS A95115 Fig. 3–Fan Off Time DIP Switch Settings CARE AND MAINTENANCE WARNING: The ability to properly perform maintenance on this equipment requires certain expertise, mechanical skills, tools, and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment other than those procedures recommended in the User’s Manual.
Page 12 6. Reinstall covers and tighten in place making sure that covers are properly seated over ports and gasketed has sealed opening (see Fig. 6). WARNING: Failure to replace cleanout port cover gaskets, failure to properly seat covers over ports, and/or failure to securely tighten wing nuts could lead to flue gas leakage.
Page 13 FLUE BOX UPPER VESTIBULE PANEL CLEANOUT CLEANOUT COVER PORT COVER GASKET CLEANOUT COVER CLAMP BRACKET WING CLAMP INSULATION A96308 Fig. 6–Reinstalling Cleanout Port Covers 9. Disconnect limit control wires. 10. Disconnect oil line and remove oil burner from furnace. 11. Remove collar on observation tube. 12.
Page 14: Blower Oiling And Removal
5. Remove flue collector box from secondary heat exchanger tube flange. This exposes inside surfaces of secondary tubes of heat exchanger. 6. Clean secondary tubes and flue pipe with a stiff brush and vacuum cleaner. 7. If only secondary tubes need to be cleaned, no further disassembly is required. Proceed to item 18 for reassembly. If primary heat exchanger section is also to be cleaned proceed to next item.
Page 15: Keeping Filters Clean
8. Swing control box out of way of blower and remove blower from unit. CAUTION: Be sure blower is adequately supported when sliding out of mounting rails, especially in horizontal positions, in order to prevent dropping blower and injuring yourself or damaging blower! 9.
Page 16 ALTERNATE OIL INLET THROUGH SLOTS KNOCK-OUT BOTH SIDES SIDE FOR SIDE FLUE RETURN AIR DUCT 1″ ″ ⁄ CLEANOUT PORTS OIL INLET -IN. DIA (2 PLACES) SIDE BOTH SIDES RETURN ELECTRICAL AIR DUCT CONNECTIONS (TOP) -IN. DIA BOTH SIDES 4″ (BOTTOM) -IN.
Page 17 CLEANOUT PORTS CLEANOUT PORTS ALTERNATE OIL INLET THROUGH SLOTS REAR VIEW 1″ ″ FLUE DIAMETER SIDE RETURN CLEANOUT AIR DUCT PORTS OIL INLET IN. DIA (2 PLCS) BOTH SIDES ELECTRICAL CONNECTIONS (TOP) IN. DIA BOTH SIDES (BOTTOM) IN. DIA BOTH SIDES CONTROL 1″...
Page 18 Table 6–Minimum Filter Dimensions (in.) UNIT SIZE FILTER SIZE Side Return End Return 036075 18-1/8 x 25 20-1/8 x 25 036105 18-/18 x 25 20-1/8 x 25 048125 18-1/8 x 30 20-1/8 x 30 060155 18-1/8 x 30 20-1/8 x 30 060210 20-1/4 x 30 24-1/2 x 30...
Page 19 BAROMETRIC DAMPER LOCATIONS FIG. A FIG. B FIG. C FIG. D GOOD LOCATIONS WRONG FIG. G FIG. H WRONG WRONG FIG. K WRONG FIG. L FIG. J POOR WRONG BAD LOCATIONS A95117 Fig. 11–Barometric Damper Locations —19—...
Page 20 LEGEND BLACK ø 115 VAC 1 60HZ POWER SUPPLY FACTORY SET L1(H) L2(N) BLUE (FUSED DISCONNECT ON HOT LEG) PRINTED CIRCUIT HEATING SPEED BROWN BOARD WIRING GREEN LINE V LOW SPEED HEAT CIRCULATION BLOWER FACTORY WIRING ORANGE 075-- LOW (L) 125-- MED (M) CONNECTION 24 V 105-- MED (M) 155-- HIGH (H)
Page 21 LEGEND BLACK ø FACTORY SET 115 VAC 1 60HZ POWER SUPPLY L1(H) L2(N) BLUE (FUSED DISCONNECT ON HOT LEG) HEATING SPEED PRINTED CIRCUIT BROWN BOARD WIRING GREEN LINE V 210 FACTORY SET ON MEDIUM SPEED MEDIUM SPEED HEATING CIRCULATION BLOWER FACTORY WIRING ORANGE CONNECTION (210)
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Bryant PO8UAA Installation Manual

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