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Save This Manual For Future Reference Models H8UH5050BC H8UH5075BC H8UH500F4C H8UH55J0C H8UH5J0C MUF050WC MUF075WC MUF00WC MUF5W5C MUFW5C HLHTRC HL8HTRC HL5HTRC HLH4TRC HL4H5TRC International Comfort Products, LLC Lewisburg, TN 709 Fast Parts Division 866-80 -78 44 0 500 00

Model Specifications Manufacturers Number (Mfr No -SeeRatingPlate) ALL Models (H8UH5/MUF/HL) General Input (Btuh) Temp. Rise ( F) H8UH5050BC MUF050WC HLHTRC 50,000 0-60 Specifications H8UH5075BC MUF075WC HL8HTRC 75,000 5-65 H8UH500F4C MUF00WC HL5HTRC 00,000 5-65 H8UH55J0C MUF5W5C HLH4TRC 5,000 5-65 H8UH5J0C MUFW5C HL4H5TRC Electrical (Volts/Hz) 0/50 0/50 0/50 0/50 0/50 Rating Plate. 6. 6. 6..5.5 Gas Type Nat LP Nat LP Nat LP Nat LP Nat LP Transformer Size (VA) T stat Heat Anticipator Gas & Ignition Std. Main Orifices (No/Size) /#4 /#54 /#4 /#54 4/#4 4/#54 5/#4 5/#54 6/#4 6/#54 Gas Valve Honeywell Regulation Type VR805S SNAP Manifold Press. (Inch s WC).5 0.0.5 0.0.5 0.0.5 0.0.5 0.0 Ignition Type/Series Hot Surface Combustion Flue Outlet Size (Inches) 4 4 4 4 4 Limits & Controls Thermal Sensor ( F) Limit Control Std. Pressure Sw. (Part No) Press (Close) Press (Open) Furnace Control (Type) Furnace Control On (Timed -secs) Off Blower Data Type & Size Motor Type/H.p. Cap. Mfd/Volts Filter Type (600 FPM) Filter Size ( ) less than 600 CFM 05-8 PSC/ / 7.5/70 4x5x+ 05-8 PSC/ / 7.5/70 4x5x+ 05 Intergrated 0 7,0,68,6-0 PSC/ / 7.5/70 6x5x+ 05-0 PSC/ / 4 0/70 600 CFM and over* 6x5x ()* side returns,000 45-75 05 - PSC/ / 4 0/70 6x5x ()* side returns Min. Cool Cap. (Tons) Max. Cool Cap. (Tons) Nat to LP NAHA00LP.5 * Two side filter racks (left and right) required for upflow applications with 600 CFM or greater. Side returns are not permitted with horizontal furnace applications. **Must be ordered from Service Parts. + Supplied.5.5 0x5x*+ bottom return 5 0x5x*+ bottom return 5 44 0 500 00 THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

Replacement Parts - H8UH5, MUF, HL (Natural Gas) Models H8UH5050BC, H8UH5075BC, H8UH500F4C, H8UH55J0C, H8UH5J0C MUF050WC, MUF075WC, MUF00WC, MUF5W5C, MUFW5C HLHTRC, HL8HTRC, HL5HTRC, HLH4TRC, HL4H5TRC Replacement part supplied will be current active part. For parts not listed, consult place of purchase. Key Description Part H8UH5050 BC H8UH5075 BC H8UH500 F4C H8UH55 J0C H8UH5 J0C No. Functional Number MUF050WC MUF075WC MUF00WC MUF5W5C MUFW5C HLHTRC HL8HTRC HL5HTRC HLH4TRC HL4H5TRC Heat Exchanger 055 059 055 0554 0555 Switch, Pressure 05 Wheel, Blower 00 040 04 4 Mount, Motor kit* 0484 048 5 Mtr, Blr /5 / CCW /5 / 4 CCW 749 749 6 Capacitor 778 779 7 Transformer, 0 to 4V 744 8 Furnace Control 7550 9 Switch, Interlock 798 0 Burner Assembly 7884 7965 7966 7967 7968 Flame Sensor 787 Ignitor 75 Transformer 0 to 5V 74 4 Orifice, Burner # 4 05 4 5 6 5 Valve, Gas 78 6 Switch, Limit (Rollout) 00 7 Switch, Limit (Main) 06 06594 064 8 Blower, Combustion (Inducer) 0484 9 Filter 4X5X 6x5x 0X5X 0064 0065 0066 See Installation Instructions for application requirements. + Filter Supplied *See Table below for bellyband location on motor + (bottom or side return) + (bottom or side return) + (bottom or side return) + ( bottom return) + ( bottom return) Bellyband Location on Motor Bellyband Location on Motor Bellyband Location on Motor Model H8UH5 A(in.) A(mm) Model HL A(in.) A(mm) Model MUF A(in.) A(mm) 050BC.8 46 HTRC.8 46 050WC.8 46 075BC.8 46 8HTRC.8 46 075WC.8 46 00F4C.06 7 5HTRC.06 7 00WC.06 7 5J0C.06 7 H4TRC.06 7 5W5C.06 7 J0C.64 67 4H5TRC,64 67 W5C.64 67 A 44 0 500 00 7

Parts for H8UH5, MUF, HL A BB Y CC X AA 8 B C D Z 6 7 N U 9 S M 0 W U 5 S F E P V G F 4 6 T 7 4 L 8 7 D 5 EE J FF 9 HH GG 5 - -49a - 6 44 0 500 00

Wiring Diagram H8UH5, MUF, HL 44 0 500 00 5

H8UH55J0, MUF5W5, HLH4TR () (Furnace Rated @4.5 Pa ESP) 4.9 587 67 80 050 49.8 56 660 788 0 74.4 54 647 77 0 99.6 54 6 756 999 4.5 50 64 74 98 49.5 497 600 76 968 74. 470 579 707 948 99. 448 557 686 94 4. 40 55 66 888 49 9 50 6 857 H8UH5J0, MUFW5, HL4H5TR ()() (Furnace Rated @4.5 Pa ESP) 4.9 607 688 804 05 49.8 580 664 788 0 74.4 55 64 768 088 99.6 54 65 74 98 4.5 495 587 7 955 49.5 465 557 686 97 74. 4 5 657 896 99. 6 488 65 869 4. 75 460 59 88 49.0 49 49 557 804 H8UH55J0, MUF5W5, HLH4TR () Air Delivery in CFM 0. 44 46 70 5 0. 89 99 670 89 0. 48 7 68 6 0.4 0 7 60 7 0.5 08 0 570 08 0.6 05 7 59 05 0.7 996 7 498 009 0.8 949 80 454 97 0.9 890 4 88.0 8 08 9 86 H8UH5J0, MUFW5, HL4H5TR ()() Air Delivery incfm 0. 87 457 70 0 0. 8 7 669 87 0. 70 59 68 6 0.4 0 57 08 0.5 049 4 5 04 0.6 985 80 454 964 0.7 98 0 9 899 0.8 860 05 5 84 0.9 794 974 5 776.0 79 909 8 70 NOTE: () Data based on Bottom Only return. () Data based on Both Sides or Bottom Plus One Side. () Reduce Airflow by 5% if Bottom ONLY return. Filter Size CFM L/S 4 X5 0 66 6 X5 600 755 0 X5 000 944 4 X5 500 80 Max CFM based on 600 FPM Max L/S based on 05 CM/s Filter required for each returnair inlet. Airflow performance includes washable (600 FPM max) filter media. 44 0 500 00 4 THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

Circulation Air Blower Data H8UH5050B, MUF050W, HLHTR () (Furnace Rated @4.5 Pa ESP) 4.9 448 54 68 49.8 8 4 508 600 74.4 65 44 49 58 99.6 45 96 47 565 4.5 5 78 454 546 49.5 58 47 56 74. 9 6 46 504 99. 74 6 97 48 4. 5 95 77 46 49.0 6 7 56 49 H8UH5075B, MUF075W, HL8HTR () (Furnace Rated @4.5 Pa ESP) 4.9 44 46 545 66 49.8 446 58 648 74.4 84 47 50 6 99.6 6 6 49 6 4.5 85 47 59 49.5 0 6 45 57 74. 98 4 4 550 99. 8 0 4 58 4. 59 99 8 504 49.0 5 76 66 48 H8UH500F4, MUF00W, HL5HTR () (Furnace Rated @4.5 Pa ESP) 4.9 477 5 65 766 49.8 444 508 59 744 74.4 47 479 567 7 99.6 88 454 5 700 4.5 59 44 55 670 49.5 4 95 487 64 74. 90 6 457 6 99. 64 8 47 587 4. 6 9 9 55 49.0 04 66 6 5 NOTE: () Data based on Bottom Only return. () Data based on Both Sides or Bottom Plus One Side. () Reduce Airflow by 5% if Bottom ONLY return. Filter Size CFM L/S 4 X5 0 66 6 X5 600 755 0 X5 000 944 4 X5 500 80 Max CFM based on 600 FPM Max L/S based on 05 CM/s Filter required for each returnair inlet. Airflow performance includes washable (600 FPM max) filter media. H8UH5050B, MUF050W, HLHTR () Air Delivery in CFM 0. 85 949 0 09 0. 8 98 076 7 0. 77 877 0 5 0.4 7 8 00 97 0.5 689 80 96 57 0.6 66 758 95 4 0.7 67 7 88 068 0.8 580 669 84 0 0.9 5 65 799 979.0 479 578 754 90 H8UH5075B, MUF075W, HL8HTR () Air Delivery in CFM 0. 898 98 55 5 0. 85 944 9 7 0. 84 905 08 7 0.4 767 860 045 99 0.5 70 86 000 57 0.6 677 770 960 0 0.7 6 75 9 65 0.8 596 679 857 9 0.9 549 64 809 068.0 498 585 776 0 H8UH500F4, MUF00W, HL5HTR () Air Delivery in CFM 0. 0 9 0 6 0. 94 076 56 576 0. 884 05 0 50 0.4 8 96 45 48 0.5 76 898 09 40 0.6 687 86 0 6 0.7 64 767 968 99 0.8 560 695 904 4 0.9 500 6 8 70.0 4 564 767 08 44 0 500 00 THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

Replacement Parts - H8UH5, MUF, HL (Natural Gas) Models H8UH5050BC, H8UH5075BC, H8UH500F4C, H8UH55J0C, H8UH5J0C MUF050WC, MUF075WC, MUF00WC, MUF5W5C, MUFW5C HLHTRC, HL8HTRC, HL5HTRC, HLH4TRC, HL4H5TRC Replacement part supplied will be current active part. For parts not listed, consult place of purchase. Key Description Part H8UH5050 BC H8UH5075 BC H8UH500 F4C H8UH55 J0C H8UH5 J0C No. Functional Number MUF050WC MUF075WC MUF00WC MUF5W5C MUFW5C HLHTRC HL8HTRC HL5HTRC HLH4TRC HL4H5TRC V Baffle, Burner Box 08 09 0 05 W Bottom, Burner Box 7847 7848 7849 7850 785 X Collector Box 048 0487 0488 0489 0490 Z Gasket, Combustion Blower 0485 AA Partition, Front Ht Exchanger 054 05 0546 0548 0549 BB Gaskets, Heat Exchanger 099 099 099 0994 0546 CC Tubing, Silicone 795 796 EE FF GG Wrapper, Filter Rack 4x5x 6x5x 0x5x Front, Filter Rack 4x5x 6x5x 0x5x Front, Filter Plastic 4x5x 6x5x 0x5x 7004 7009 700 70004 7000 7000 7904 7904 79044 + (bottom or side return) + (bottom or side return) + (bottom or side return) + (bottom return) + (bottom return) + (bottom return) + (bottom return) + (bottom return) + (bottom return) HH Clip, Filter 00848 )( PART NOT ILLUSTRATED )( Fuse, 5 Amp 0848 )( Harness, Wire 745 746 )( Manual, Installation 4500 )( Manual, Users 4500 See Installation Instructions for application requirements. + Supplied 44 0 500 00 9