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Resumen del manual
FIGURE 11: Typical Suspended Furnace / Crawl Space Installation For modulating furnaces to be used in the downflow position, it is necessary to rotate the gas valve so that it is upright when the furnace is installed. Loosen the pipe union between the gas valve and manifold, rotate the valve as far upward as it will go, and tighten the union. See Figure 13, "Downflow Installation - Gas Valve Rotation". Angle Iron Bracket 6” Min. Between Rod & Front of Furnace 1” Max. Between Rod & Back of Furnace Support Bracket FIGURE 12: Downflow Venting FIGURE 13: Downflow Installation - Gas Valve Rotation LEFT SIDE VENT RIGHT SIDE VENT Rotate vent blower 90° either way For downflow installation,rotate gas valve upwards, as shown 368261-UIM-A-0508 LEFTSIDERIGHTSIDE.5” .5” VentOutletRETURNENDB24.25” 29.5” (ForCladdeddooraddappoximatelyanadditional.75”) 28.5” ElectricalEntryGasPipeEntryThermostatWiringFRONT14” 1”1.5” 23” SUPPLYENDCVentOutlet24.38” 20”.5” BVentOutletGasPipeEntryThermostatWiring33” A.5” ElectricalEntry FIGURE 14: Dimensions Table 3: Cabinet and Duct Dimensions SECTION III: FILTERS FILTER INSTALLATION All applications require the use of a field installed filter. All filters and mounting provision must be field supplied. Filters must be installed external to the furnace cabinet. DO NOT attempt to install filters inside the furnace. Table 4: Recommended Filter Sizes (High Velocity 600 FPM) CFM (m./min) Cabinet Size Side (in) Bottom (in) 1200 (34.0) A 16 x 25 14 x 25 1200 (34.0) B 16 x 25 16 x 25 1600 (45.3) C 16 x 25 20 x 25 2000 (56.6) C (2) 16 x 25 20 x 25 NOTES: 1. Air velocity through throwaway type filters may not exceed 300 feet per minute (91.4 m/min). All velocities over this require the use of high velocity filters. 2. Do not exceed 1800 CFM using a single side return and a 16x25 filter. For CFM greater than 1800, you may use two side returns or one side and the bottom or one side return with a transition to allow use of a 20x25 filter. BTUH (kW) Input Nominal CFM (m3/min) Cabinet Size Cabinet Dimensions (Inches) Approximate Operating Weights A A (cm) B B (cm) C C (cm) Lbs 60 (17.6) 1200 (34.0) A 14 1/2 36.8 13 1/2 34.3 10.3 26.2 94 80 (23.4) 1200 (34.0) B 17 1/2 44.4 16 1/2 41.9 11.8 29.9 103 80 (23.4) 1600 (45.3) C 21 53.3 20 50.8 13.6 34.5 114 100 (29.3) 1600 (45.3) C 21 53.3 20 50.8 13.6 34.5 118 100 (29.3) 2000 (56.6) C 21 53.3 20 50.8 13.6 34.5 122 120 (35.1) 2000 (56.6) C 21 53.3 20 50.8 15.8 40.1 129 SIDE RETURN Locate the “L” shaped corner locators. These indicate the size of the cutout to be made in the furnace side panel. Refer to Figure 15, "Side Return Cutout Markings". Front of Furnace Side of Furnace Corner Markings FIGURE 15: Side Return Cutout Markings Install the side filter rack following the instructions provided with that accessory. If a filter(s) is provided at another location in the return air system, the ductwork may be directly attached to the furnace side panel. Some accessories such as electronic air cleaners and pleated media may require a larger side opening. Follow the instructions supplied with that accessory for side opening requirements. Do not cut the opening larger than the dimensions shown in Figure 14, "Dimensions". Johnson Controls Unitary Products 368261-UIM-A-0508 HORIZONTAL APPLICATION Horizontal Filters All filters and mounting provision must be field supplied. All installa- tions must have a filter installed. FIGURE 17: Upflow/Downflow Gas PipingExternalManualShutoffValveToGasSupplyToGasSupplyGroundedJointUnionmaybeInstalledInsideorOutsideUnit. DripLeg Any branch duct (rectangular or round duct) attached to the plenum must attach to the vertical plenum before the filter. The use of straps and / or supports is required to support the weight of the external filter box. Downflow Filters Downflow furnaces typically are installed with the filters located above the furnace, extending into the return air plenum or duct. Any branch duct (rectangular or round duct) attached to the plenum must attach to the vertical plenum above the filter height. Filter(s) may be located in the duct system external to the furnace using an external duct filter box attached to the furnace plenum or at the end of the duct in a return filter grille(s). The use of straps and/or supports is required to support the weight of the external filter box. SECTION IV: GAS PIPING GAS SAFETY An overpressure protection device, such as a pressure regulator, must be installed in the gas piping system upstream of the furnace and must act to limit the downstream pressure to the gas valve so it does not exceed 0.5 PSI (14" w.c. (3.48 kPa). Pressures exceeding 0.5 PSI (14” w.c. (3.48 kPa) at the gas valve will cause damage to the gas valve, resulting in a fire or explosion or cause damage to the furnace or some of its components that will result in property damage and loss of life. FIGURE 18: Horizontal Gas Piping ManualShut-offValveGasPipeGasPipeDripLegManualShut-offValveGasValveGasBurnersDripLeg An access...
Otros modelos de este manual:Eléctrico - CM8M/CMLM*MP (1.75 mb)
Eléctrico - TM8M/TMLM*MP (1.75 mb)