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Manafacture: Bryant File size: 309.38 kb File name: pds398a.0.2b.pdf Language of manual:

CA TWINNING KIT FOR GAS FURNACES Models 394GAD 394GAZ 394JAZ and 398AAZ Sizes 065 thru 150 A77401 The furnace twinning kit permits two furnaces of the same model and size to operate as a single unit on the same duct system. Twinned furnaces may be used with Model 507C090 or 120 А-Coils and matching condensing units. The complete singlezone heating and cooling system formed is ideal for large homes and light commercial applications. The twinning of standard furnaces with continuous pilots (Model 394GAD) offers low system cost. Vent dampers may not be installed when twinning two Model 394GAD furnaces. This kit can be used to twin standard furnaces with intermittent ignition systems—providing lower operating costs. Only these furnaces (Model 394GAZ or 394JAZ) can be equipped with vent dampers. Twinning of condensing furnaces may also be accomplished with this kit. Model 398AAZ Condensing Furnaces yield the utmost in fuel efficiency. The kit is not intended for heat-staging usage. FEATURES/BENEFITS FACTORY-WIRED—All internal control box wiring is complete. The 115-volt wiring is furnished and already connected in the control box. TERMINAL STRIP—The 24-volt connections from the thermostat, furnaces, and the twinning control box can be easily made to terminal strips. LIMIT CONTROLS—Two manual reset limit controls give added protection against reverse air circulation. TRANSFORMER—Built-in transformer provides the control power to operate twinning control box and condensing unit (if used). ISOLATES TRANSFORMERS—Provides isolation of furnace and twinning control transformers required by the National Electric Code. Twinned furnaces are the solution to heating demands greater than a single furnace can meet. Form No. PDS 398A.0.2B •-A-* __1 13 ;1 ..... FIZI. =! 394G and 394J Furnaces A78686 A85181 398A Furnace DIMENSIONAL DRAWING (Inches) MODELS: 394GAD and 394GAZ SIZE* A D Et Vent Connection (2)048100 42 40-3/8 39-1/2 (2)5 (2) 048125 42 40-3/8 39-1/2 (2)5 (2)060125 49 47-3/8 46-1/2 (2)5 (2)048150 49 47-3/8 46-1/2 (2)6 (2)060150 49 47-3/8 46-1/2 (2)6 ♦Size given in input MBH. > fCommon bottom inlet must be used. DIMENSIONAL DRAWING (Inches) MODEL: 394JAZ SIZE* A D Et Vent Connection (2) 048065 42 40-3/8 39-1/2 (2)4 (2) 048080 42 40-3/8 39-1/2 (2)5 (2) 060080 42 40-3/8 39-1/2 (2)5 (2) 060095 49 47-3/8 46-1/2 (2)6 *Size given in output MBH. fCommon bottom inlet must be used. DIMENSIONAL DRAWING (Inches) MODEL: 398AAZ SIZE* A D Et (2) 048100 42 40-3/8 39-1/2 (2) 060100 42 40-3/8 39-1/2 (2)060120 49 47-3/8 46-1/2 *Size given in output MBH. fCommon bottom inlet must be used. SPECIFICATIONS PART NUMBER 315785-701 ELECTRICAL Volts—Hertz—Phase 115—60—1 T ransformer (115V/24V) 40VA External Control Heating 28VA Power Available Cooling 28VA Blower Relay Contact Rating (2) 12 Amps Inductive Limit Control (2) Manual Reset RATINGS & PERFORMANCE*! ♦See the appropriate Product Data Sheet for furnace rating...

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