Modine Manufacturing POR Installation And Service Manual

Manual is about: oil-fired unit heaters

Summary of POR

  • Page 1

    Installation and service manual oil-fired unit heaters model por models manufactured after september 2007 with beckett clean cut burner 4-522.4 5h75804 rev.D inspection on arrival 1. Inspect unit upon arrival. In case of damage, report immediately to transportation company and you local modine sales...

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    4-522.4 2 special precautions / table of contents special precautions the installation and maintenance instructions in this manual must be followed to provide safe, efficient and trouble-free operation. In addition, particular care must be exercised regarding the special precautions listed below. Fa...

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    4-522.4 3. In multiple unit installations, arrange units so that each supports the air stream of the next unit, thus creating circulatory air movement in the area. See figure 3.1. A large portion of the heated air should be directed toward the side of the building exposed to prevailing winds. 4. Whe...

  • Page 4

    4-522.4 4 installation combustion air requirements for complete combustion, 14-1/2 lbs. Of air is required for each pound of no. 2 fuel oil. Lack of combustion air can cause erratic burner operation, noisy combustion, fuel odors and soot deposits on heat exchanger walls resulting in lowered efficien...

  • Page 5

    4-522.4 venting - continued 5. If it is necessary to have an excessively high stack or if the stack is located such that it is susceptible to updraft conditions caused by wind, then oversized barometric dampers should be installed. In extremely windy locations, a breidert type vent cap is recommende...

  • Page 6

    4-522.4 valve violet v y y y y v single-phase,intermittent ignition, low voltage thermostat w w bk w or w bk t t cad cell ignitor bl/w tr junction box on burner burner housing primary control burner motor (by others) low volt. Therm. All wiring must conform to national electric code nfpa #70 and app...

  • Page 7

    4-522.4 piping 1. Recommend all piping be done in accordance with nfpa no. 31 “installation of oil burning equipment” and all local codes. 2. All piping shall be steel or brass pipe, with ul - listed fittings. Galvanized or wrought iron pipe is not recommended. 1/2 inch o.D. Copper tubing with flare...

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    4-522.4 8 installation figure 8.1 two pipe system table 8.1 equivalent length of straight pipe or tubing (feet) multiple unit supply to save piping, oil tanks, and provide flexibility to extend pipe supply lines to multiple-unit installations, a centralized oil distribution system may be installed w...

  • Page 9

    4-522.4 9 installation figure 9.1 typical loop system for multiple units figure 9.2 typical pressurized supply system for multiple units.

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    4-522.4 10 installation accessories barometric draft control do not attach draft control to top or bottom of horizontal flue pipe or in a room separate from unit heater. The best location is as close to the unit heater as possible. Use a spirit level to make sure the draft control is plumb in all di...

  • Page 11

    4-522.4 11 operation figure 11.1 cutaway through oil-fired unit heater 1. Combination fan-limit switch 2. Flue outlet 3. Flame inspection port cover 4. Horizontal louvers 5. Clean-out covers 6. Heat exchanger 7. Ceramic fiber fire-pot 8. Flame-retention head 9. Nozzle electrode assembly 10. Junction...

  • Page 12

    4-522.4 12 operation during the normal operation, if the flame is lost for about 15 seconds, the primary control will again “lockout” and must be manually reset. The fan and limit switch performs the dual function of operating the circulating air fan and turning the burner off if an overheat conditi...

  • Page 13

    4-522.4 13 operation 6. Shut unit off and connect a pressure gauge to the pressure gauge port on the fuel unit. When the unit is turned on, the pressure should be 130 +/- 2psi for por100 and 145, 100 +/- 2psi for por 185. If pressure adjustment is necessary, adjust pressure with screwdriver or allen...

  • Page 14

    4-522.4 14 service instructions to service burner assembly 1. Disconnect electric power to unit. 2. Remove fasteners on hinged ignitior on top of the unit and swing back giving access to the inside of the burner housing, the nozzle, cad cell, and blower wheel. 3. Clean blower wheel and combustion ai...

  • Page 15

    4-522.4 15 service instructions the best adjusted flame pattern will be a clean, yellow, solid cone which is well established on the burner head and terminates into short licks of flame within the ceramic fiber fire pot. An accurate combustion check can only be made with the proper instrumentation a...

  • Page 16

    4-522.4 1 service instructions the suntec fuel unit utilizes an internal strainer to trap foreign material. Periodically, remove the fuel unit cover and clean the strainer with a brush and clean fuel oil. Generally, service problems do not occur with a fuel unit. A thorough check should be made befo...

  • Page 17

    4-522.4 17 dimensional/performance data figure 17.1 oil-fired unit heater dimensions minimum clearances - inches top - 18" front unobstructed sides 18" bottom 18" back 18" flue 18" table 17.1 outline dimensions (inches) approx. Shipping model a b c d e f g h j k l m y wt. Lbs. Por 100 27-1/2 35-1/4 ...

  • Page 18

    4-522.4 18 service & troubleshooting remedy problem a. Burner motor does not start. 1. Incomplete electrical circuit. 1. Check main disconnect switch, fuses, thermostat contacts, and operating and limit controls. 2. Primary control locked out on safety. 2. Wait five minutes and until heat exchanger ...

  • Page 19

    4-522.4 19 service & troubleshooting remedy problem b. Burner motor operates but no oil delivered at nozzle. 1. Oil level below intake line inside supply tank. 1. Fill tank with oil and bleed air from the line. 2. Clogged strainer. 2. Remove and clean strainer. 3. Clogged nozzle. 3. Remove and clean...

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    Commercial products group modine manufacturing company 1500 dekoven avenue racine, wisconsin 53403-2552 phone: 1.800.828.4328 (heat) www.Modine.Com © modine manufacturing company 2007 9/13/07 - litho in usa as modine manufacturing company has a continuous product improvement program, it reserves the...