Models GNK050N12B3 GNK075N14B3 GNK100N16B3 GNK125N20B3. Save This Manual For Future Reference. Multi- Ind., Inc. Lewisburg, TN USA 37091

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1 Models GNK00NB GNK07NB GNK00N6B GNKN0B Manufactured by: Multi Ind., Inc. Lewisburg, TN USA 709 Design Certified by A.G.A. Save This Manual For Future Reference APPROVED R PrintedinU.S.A. LP //

2 Manufacturers Number (Mfr No SeeRatingPlate) GNK00NB Input (Btuh) Std/Alt. 0,000 0,000 Output (Btuh) Std/Alt.,00,00 Temp. Rise ( F) Electrical (Volts/Hz/FLA) /60/. /60/. Transformer Size (VA) 0 0 T stat Heat Anticipator.0.0 Gas Valve HW SV900 HW SV900 Manifold Press. (Inch s WC). 0.0 Std. Main Orifices (No/Size) /# /# Pilot Orifice Size.08.0 Ignition Type/Series HW HSP HW HSP Lock Out Time Flue Outlet Size (Inches) Std. Outlet Temp ( F) <0 <0 Comb.Blower (MFD/Volts) /0 /0 No Elbows DWV Elbows Rollout Switch 0 0 Limit Control Setting ( F) Auxiliary Limit ( F) 0 0 Fan Control (Type) HW ST90 HW ST90 (TimedSecs) Off 60,90,0,0 60,90,0,0 Std. Pressure Sw. (Part No) Press Differential (Close).6.6 Press Differential (Open).8.8 High Alt. Press. Sw (Part No) Press Differential (Close).0.0 Press Differential (Open).8.8 Manufacturers Number (Mfr No SeeRatingPlate) GNK07NB Input (Btuh) Std/Alt. 7,000 7,000 Output (Btuh) Std/Alt. 67,00 67,00 Temp. Rise ( F) Electrical (Volts/Hz/FLA) /60/7. /60/7. Transformer Size (VA) 0 0 T stat Heat Anticipator.0.0 Gas Valve HW SV900 HW SV900 Manifold Press. (Inch s WC). 0.0 Std. Main Orifices (No/Size) /# /# Pilot Orifice Size.08.0 Ignition Type/Series HW HSP HW HSP Lock Out Time Flue Outlet Size (Inches), /,, /, Std. Outlet Temp ( F) <0 <0 Comb.Blower (MFD/Volts) /0 /0 No Elbows DWV Elbows.0..9 Rollout Switch Limit Control Setting ( F) Auxiliary Limit ( F) 0 0 Fan Control (Type) HW ST90 HW ST90 (TimedSecs) Off 60,90,0,0 60,90,0,0 Std. Pressure Sw. (Part No) Press Differential (Close).6.6 Press Differential (Open).8.8 High Alt. Press. Sw (Part No) Press Differential (Close).0.0 Press Differential (Open).8.8 Type & Size 08 Filt Type Washable Motor Amps/RPM.6/00 Filt Size ( ) 6xx Motor Type/ H.P. PSC// Min. Cool Cap. MFD/Volts /70 Cap. (Tons). Cap. (Tons) Type & Size 08 Filt Type Washable Motor Amps/RPM 6.8/00 Filt Size ( ) 6xx Motor Type/ H.P. PSC// Min. Cool Cap. MFD/Volts 7./70 Cap. (Tons) Cap. (Tons)

3 Manufacturers Number (Mfr No SeeRatingPlate) GNK00N6B Input (Btuh) Std/Alt. 00,000 00,000 Output (Btuh) Std/Alt. 90,000 90,000 Temp. Rise ( F) Electrical (Volts/Hz/FLA) /60/9. /60/9. Transformer Size (VA) 0 0 T stat Heat Anticipator.0.0 Gas Valve HW SV900 HW SV900 Manifold Press. (Inch s WC). 0.0 Std. Main Orifices (No/Size) /# /# Pilot Orifice Size.08.0 Ignition Type/Series HW HSP HW HSP Lock Out Time Flue Outlet Size (Inches), /,, /, Std. Outlet Temp ( F) <0 <0 Comb.Blower (MFD/Volts) /0 /0 No Elbows DWV Elbows Rollout Switch Limit Control Setting ( F) Auxiliary Limit ( F) 0 0 Fan Control (Type) HW ST90 HW ST90 (TimedSecs) Off 60,90,0,0 60,90,0,0 Std. Pressure Sw. (Part No) Press Differential (Close).6.6 Press Differential (Open).8.8 High Alt. Press. Sw (Part No) Press Differential (Close).0.0 Press Differential (Open).8.8 Type & Size 00 Filt Type Washable Motor Amps/RPM 8./00 Filt Size ( ) 6xx Motor Type/ H.P. PSC// Min. Cool Cap. MFD/Volts 0/70 Cap. (Tons) Cap. (Tons) Manufacturers Number (Mfr No SeeRatingPlate) GNKN0B Input (Btuh) Std/Alt.,000,000 Output (Btuh) Std/Alt.,, Temp. Rise ( F) 7 7 Electrical (Volts/Hz/FLA) /60/0. /60/.0 Transformer Size (VA) 0 0 T stat Heat Anticipator.0.0 Gas Valve HW SV900 HW SV900 Manifold Press. (Inch s WC). 0.0 Std. Main Orifices (No/Size) /# /# Pilot Orifice Size.08.0 Ignition Type/Series HSP HSP Lock Out Time Flue Outlet Size (Inches) Std. Outlet Temp ( F) <0 <0 Comb.Blower (MFD/Volts) /0 /0 No Elbows DWV Elbows Rollout Switch Limit Control Setting ( F) Auxiliary Limit ( F) 0 0 Fan Control (Type) HW ST90 HW ST90 (TimedSecs) Off 60,90,0,0 60,90,0,0 Std. Pressure Sw. (Part No) Press Differential (Close).6.6 Press Differential (Open).8.8 High Alt. Press. Sw (Part No) Press Differential (Close).0.0 Press Differential (Open) Type & Size.80.6 Filt Type Washable Motor Amps/RPM 9.8/900 Filt Size ( ) ()6x Motor Type/ H.P. PSC// Min. Cool Cap. MFD/Volts 0/70 Cap. (Tons). Cap. (Tons)

4 . Wiring Diagram

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6 Replacement Parts GNK Models GNK00NB, GNK07NB, GNK00N6B, GNKN0B (Natural Gas) Replacement part supplied will be current active part. For parts not listed, consult place of purchase. Key No. Description Functional Part Number Heat Exchanger Coil Condenser Wheel Blower Motor Blower Mount Motor Kit Capacitor /70V 0/70V 7./70V Control, Fan Timer Transformer Switch Door Interlock Switch Pressure 0089 Blower Exhaust 0 Restrictor Exh Blwr ORing(ExhBlwr) 0090 Washer Exh Blwr Transition Asy O Ring (Header Box) Pressure Tap Switch Limit Rollout Valve Gas Nat & LP 00 0 Manifold Gas Tube Pilot 690 Orifice Burner Nat # LP # High Altitude Orifice Nat # LP # LP #6 0 *076 0 *0 *0 Igniter/Sensor with Clip 009 Pilot Burner Assembly Nat & LP 986 Orifice Pilot Nat.00 LP Burner Asy Switch Limit (Main) Tube Sensor Switch, Limit (Aux.) Filter 6 x x / 006 * Only used when furnace has been converted to LP Gas Key No. Description NonFunctional Part Number A Panel Top B Box Field Connect 09 C Cover Field Connect 0060 D Casing E Baffle Circ Air F Bracket Coil G Bracket Mount Coil(RH) 06 H Bracket Mount Coil(LH) 0 J Rail Blower Slide 709 K Casing Base L Blower Partition M Panel Cutoff Blwr N Housing Blower O Bracket Ctrl Board 078 Q Hanger Blower R Partition Frt Bot S Partition Frt Top T Gasket Collector Box U Collector Box V Board Insul Coll Box W Cover Diaphragm X Diaphragm Silicone Y Bracket Pilot 0090 Z Gasket Limit Switch AA Door Louvered (NTGM ONLY) Door Louvered 0068 (GNK ONLY) BB Door Blower CC Viewport Cover Lexan DD Gasket Viewport

7 Replacement Parts GNK Models GNK00NB, GNK07NB, GNK00N6B, GNKN0B (Natural Gas) Replacement part supplied will be current active part. For parts not listed, consult place of purchase. Key No. Description NonFunctional Part Number EE Cover Burner Box FF Bracket Burner Box 0087 GG Baffle Burner Box HH Burner Box Asy JJ Gasket Air Intake KK Coupling Air Intake 0087 LL Gasket Burner Box MM Door Handle 0007 NN Gasket, Heat Exchanger OO Seal, Burner Box Sides 0087 PP Seal, Burner Box QQ Gasket, Header Box 000 RR Support, Heat Exchanger SS Clamp, Capacitor 0900 TT Wrapper Filter Rack UU Front Filter Rack VV Cover Filter Plastic 790 WW Clip Filter 0088 )( PART NOT ILLUSTRATED )( Wire Harness 0068 )( Pin Plastic Clip 76 )( Flexible Neoprene Coupling 00 )( Clamp Hose 0079 )( Screen 0079 )( Screen 0070 )( Elbow Union 970 )( Manual Tech )( Manual Install )( Manual Homeowners )( Flue Pipe, ABS x )( Grommet, Vinyl 009 )( Bushing, Strn Rlf 987 Gas Conversion Kits All models Nat to LP NAHF00LP *00909 LP to Nat *0090 *Must be ordered from Service Parts