?oleman FL8-UH Installation Instruction - page 20

Summary of FL8-UH

  • Page 1

    Contents general information..................................... 3 unit installation .............................................4 venting................................................................. 8 ductwork ...........................................................9 upflow/horizontal mode...

  • Page 2: Warning

    035-17405-000 rev. B (0801) 2 unitary products group improper installation may create a condition where the operation of the product could cause personal injury or property damage. Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to thi...

  • Page 3: Caution

    035-17405-000 rev. B (0801) unitary products group 3 limitations and location this furnace should be installed in accordance with all national/local building/safety codes and requirements, or in the absence of local codes, with the national fuel gas code, ansi z223.1 - (latest edition) or, in canada...

  • Page 4

    035-17405-000 rev. B (0801) 4 unitary products group check the rating plate and power supply to be sure that elec- trical characteristics match. All models use nominal 115 vac, 1 phase, 60 hz. Power supply. A furnace installed in a residential garage must be located so that all burners and burner ig...

  • Page 5

    035-17405-000 rev. B (0801) unitary products group 5 the following must be considered to obtain proper air for combustion and ventilation in confined spaces. Air source from inside the building - two permanent openings, one within 12 inches of the top of the confined space and one within 12 inches o...

  • Page 6

    035-17405-000 rev. B (0801) 6 unitary products group figure 1: upflow/horizontal furnace dimensions table 3: upflow/horizontal ratings & physical/electrical data p*hu / g8t-uh / l8t-uh & fl8-uh cabinet width afue * *. Afue numbers are determined in accordance with doe test procedures. A i r t emp r ...

  • Page 7

    035-17405-000 rev. B (0801) unitary products group 7 figure 2 : downflow furnace dimensions table 4: ratings & physical/electrical data downflow models p*dn / g8t-dn / l8t-dn c a binet w idth afue * a ir t emp r i se m ax . O utlet t emp . ? F b lo wer t o tal u nit a mps m ax .O ver -c urrent p ro ...

  • Page 8: Caution

    035-17405-000 rev. B (0801) 8 unitary products group g. Chlorinated waxes and cleaners h. Chlorine based swimming pool chemicals i. Water softening chemicals j. De-icing salts or chemicals k. Carbon tetrachloride l. Halogen type refrigerants m. Cleaning solvents (such as perchloroethylene) n. Printi...

  • Page 9: Caution

    035-17405-000 rev. B (0801) unitary products group 9 vent safety check procedure the following steps shall be followed with each appliance connected to the venting system placed in operation, while any other appliances connected to the common venting sys- tem are not in operation. 1. Seal any unused...

  • Page 10

    035-17405-000 rev. B (0801) 10 unitary products group upflow/horizontal models - upflow application supply plenum connection attach the supply plenum to the furnace outlet duct connection flanges. This is typi- cally through the use of s cleat material when a metal plenum is used. The use of an appr...

  • Page 11: Caution

    035-17405-000 rev. B (0801) unitary products group 11 side return - external filter an accessory filter rack (1sr0302bk) is available for mount- ing the filter external to the cabinet. Locate and knock out the square corner locators. These indi- cate the size of the cutout to be made in the furnace ...

  • Page 12: Warning

    035-17405-000 rev. B (0801) 12 unitary products group bottom return bottom return applications normally pull return air through a base platform or return air plenum. Be sure the return plat- form structure is suitable to support the weight of the furnace. Refer to figure 1 on page6, for unit dimensi...

  • Page 13

    035-17405-000 rev. B (0801) unitary products group 13 when suspending the furnace from rafters or floor joists using rod, pipe or straps, for furnace weights to determine suitable means of suspension. Refer to table3 on page6. Angle supports should be placed at the supply air end and near the blower...

  • Page 14: Warning

    035-17405-000 rev. B (0801) 14 unitary products group supply air ducts installations on combustible material or floors must use a combustible floor base 1cb0314, 17, 21 & 24, as specified on the rating plate or a matching cooling coil. Refer to figure 9 on page13. Follow the instructions supplied wi...

  • Page 15: Caution

    035-17405-000 rev. B (0801) unitary products group 15 electrical power connection field wiring to the unit must conform to and be grounded in accordance with the provisions of the national electrical code ansi/nfpa no. 70 - latest edition, canadian electric code c22.1 part 1 - (latest edition) and/o...

  • Page 16: Caution

    035-17405-000 rev. B (0801) 16 unitary products group electrical control connections install the field-supplied thermostat. The thermostat instruc- tions for wiring are packed with the thermostat. With the ther- mostat set in the off position and the main electrical source disconnected, complete the...

  • Page 17: Caution

    035-17405-000 rev. B (0801) unitary products group 17 start-up and adjustments the initial start-up of the furnace requires the following addi- tional procedures. 1. When the gas supply is initially connected to the furnace, the gas piping may be full of air. In order to purge this air, it is recomm...

  • Page 18: Caution

    035-17405-000 rev. B (0801) 18 unitary products group if the actual input is not within 2% of the furnace rating, with allowance being made for the permissible range of the regu- lator setting (0.3 inches w.C.), replace the orifice spuds with spuds of the proper size. Adjustment of manifold gas pres...

  • Page 19: Caution

    035-17405-000 rev. B (0801) unitary products group 19 6. Turn the electrical and gas supplies back on, and, with the burners in operation, check for gas leakage around the plug with a soap and water solution. Adjustment of temperature rise the temperature rise, or temperature difference between the ...

  • Page 20

    035-17405-000 rev. B (0801) 20 unitary products group accessory connections the furnace control will allow power switching control of vari- ous accessories. Refer to figure 16, for connection details. Electronic air cleaner connection two 1/4" spade terminals (eac and eac n) for electronic air clean...

  • Page 21

    035-17405-000 rev. B (0801) unitary products group 21 table 6: blower performance cfm - upflow/horizontal (without filter) note: data below reflects airflows with single return opening, either left or right side or bottom models p*hu/g8t-uh/ l8t-uh / fl8-uh * speed tap external static pressure, inch...

  • Page 22

    035-17405-000 rev. B (0801) 22 unitary products group filter performance the airflow capacity data published in tables 6 & 7 repre- sents blower performance without filters. To determine the approximate blower performance of the system, apply the fil- ter drop value for the filter being used or sele...

  • Page 23: Caution

    035-17405-000 rev. B (0801) unitary products group 23 applying filter pressure drop to determine system airflow to determine the approximate airflow of the unit with a filter in place, follow the steps below: 1. Select the filter type. 2. Select the number of return air openings or calculate the ret...

  • Page 24: Warning

    035-17405-000 rev. B (0801) 24 unitary products group the blower motor continues to operate for the amount of time set by the fan-off delay "jumper" located on the ignition con- trol board (figure 16). The heating cycle is complete, and the furnace is ready for the start of the next heating cycle. I...

  • Page 25

    035-17405-000 rev. B (0801) unitary products group 25 blower care even with good filters properly in place, blower wheels and motors will become dust laden after long months of opera- tion. The entire blower assembly should be inspected annu- ally. If the motor and wheel are heavily coated with dust...

  • Page 26

    035-17405-000 rev. B (0801) 26 unitary products group upper heat exchanger access 1. Perform steps 1-4 above. 2. Disconnect vent piping from the vent motor assembly at the top panel on the furnace (upflow only). On downflow models, the vent pipe is attached to the vent motor out- let. Remove this sc...

  • Page 27: Warning

    035-17405-000 rev. B (0801) unitary products group 27 5 flash:this fault is indicated if the normally closed con- tacts in the rollout switch opens. The rollout control is manu- ally reset. If it has opened, check for proper combustion air, proper inducer operation, primary heat exchanger failure or...

  • Page 28

    035-17405-000 rev. B (0801) 28 unitary products group figure 17 : furnace event control schedule.

  • Page 29

    035-17405-000 rev. B (0801) unitary products group 29 wiring diagram - upflow/horizontal models p*hu/g8t-uh/l8t-uh & fl8-uh (note: the furnace’s control system depends on correct polarity of the power supply.).

  • Page 30

    035-17405-000 rev. B (0801) 30 unitary products group wiring diagram - downflow models p*dn/g8t-dn/l8t-dn (note: the furnace’s control system depends on correct polarity of the power supply.).

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    035-17405-000 rev. B (0801) unitary products group 31 notes.

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    Subject to change without notice. Printed in u.S.A. 035-17405-000 rev. B (0801) copyright © by unitary products group 2000. All rights reserved. Supersedes: 035-17405-000 rev. A (900) unitary 5005 norman product york ok group drive 73069 notes.