York TL8E Installation Manual

York TL8E Installation Manual Manual pdf 7 page image

5532522-UIM-B-0619Johnson Controls Ducted Systems 7SECTION III: FILTERSFILTER INSTALLATIONAll applications require the use of a field installed filter. All filters andmounting provision must be field supplied.Filters must be installed external to the furnace cabinet. DO NOTattempt to install filters inside the furnace.1. Air velocity through throwaway type filters may not exceed 300 feet perminute (91.4 m/min). All velocities over this require the use of high velocityfilters.2. Do not exceed 1800 CFM using a single side return and a 16x25 filter. ForCFM greater than 1800, you may use two side returns or one side and thebottom or one return with a transition to allow use of a 20x25 filter.SIDE RETURNLocate the “L” shaped corner locators. These indicate the size of the cut-out to be made in the furnace side panel. Refer to Figure 7.Install the side filter rack following the instructions provided with thataccessory. If a filter(s) is provided at another location in the return airsystem, the ductwork may be directly attached to the furnace sidepanel.HORIZONTAL FILTERSAny branch duct (rectangular or round duct) attached to the plenummust attach to the vertical plenum before the filter. Use of straps and/orsupports is required to support the weight of the external filter box.SECTION IV: GAS PIPINGGAS SAFETYGAS PIPING INSTALLATIONProperly sized wrought iron, approved flexible or steel pipe must beused when making gas connections to the unit. If local codes allow theuse of a flexible gas appliance connection, always use a new listed con-nector. Do not use a connector that has previously serviced another gasappliance.Some utility companies or local codes require pipe sizes larger than theminimum sizes listed in these instructions and in the codes. The furnacerating plate and the instructions in this section specify the type of gasapproved for this furnace - only use those approved gases. The instal-lation of a drip leg and ground union is required. Refer to Figure 9.CAUTIONAll filters and mounting provision must be field supplied. All installa-tions must have a filter installed.NOTICESingle side return above 1800 CFM is approved as long as the filtervelocity does not exceed filter manufacturer’s recommendation.Table 3: Recommended Filter Sizes (High Velocity 600 FPM)CFM(m³/min)CabinetSizeSide(in)Bottom(in)1200 (34.0) A 16 x 25 14 x 251600 (45.3) C 16 x 25 20 x 252000 (56.6) C (2) 16 x 25 20 x 25FIGURE 7: Side Return Cutout Markings!)52172))851$&(&251(50$5.,1*66,'(2))851$&($IMPORTANT: Some accessories such as electronic air cleaners andpleated media may require a larger side opening. Follow the instruc-tions supplied with that accessory for side opening requirements. Donot cut the opening larger than the dimensions shown in Figure 6.DANGERAn overpressure protection device, such as a pressure regulator,must be installed in the gas piping system upstream of the furnaceand must act to limit the downstream pressure to the gas valve so itdoes not exceed 0.5 PSI (14" w.c., 3.48 kPa). Pressures exceeding0.5 PSI (14” w.c., 3.48 kPa) at the gas valve will cause damage to thegas valve, resulting in a fire or explosion or cause damage to the fur-nace or some of its components that will result in property damageand loss of life.FIGURE 8: Gas ValveIMPORTANT: Plan your gas supply before determining the correctgas pipe entry. Use 90-degree service elbow(s), or short nipples andconventional 90-degree elbow(s) to enter through the cabinet accessholes.!INLETWRENCHBOSSINLETPRESSUREPORTONOFFON/OFF SWITCH(Shown in ON position)MAIN REGULATORADJUSTMENTOUTLETOUTLETPRESSUREPORT VENT PORTA0226-001