1125 80TH ST SW 2018-04-05 - Laserfiche WebLink

6. Clearances and Location surfaces,if possible.Where two or more units are installed in the same room,a general scheme of air circulation should be maintained. For safety and convenience,provide clearances as shown in the Suspended heaters are most effective when located as close to the working zone following table.Minimum clearances are also listed on the heater as possible,and this fact should be kept in mind when determining the mounting rating plate. heights to be used.However,avoid directing the discharged air directly on the Minimum Clearances-inches(mm) room occupants. Sides Bottom Partitions,columns,counters,or other obstructions should be taken into consid- Top Control Side Opposite To To Non- eration when locating the unit heater so that a minimum quantity of airflow will Side Controls Combustibles Combustibles be deflected by such obstacles. 6" 6"(152)plus 6" 6" 0" When units are located in the center of the space to be heated,the air should be (152) width of unit (152) (152) (0) discharged toward the exposed walls.In large areas,units should be located to discharge air along exposed walls with extra units provided to discharge air in Unit Heater Location -For best results,the heater should be toward the center of the area. placed with certain rules in mind.In general,a unit should be At those points where infiltration of cold air is excessive,such as at entrance located from 8 to 12 ft(2.6 to 3.6M)above the floor. Units doors and shipping doors,it is desirable to locate the unit so that it will discharge should always be arranged to blow toward or along exposed wall directly toward the source of cold air from a distance of 15 to 20 feet(4.5 to 6 CAUTION:Do not locate the heater where it Itily be exposed to water spray,rain or dripping water. 7. Suspension and Mounting WARNING: Do not support a Model SCE with four Before installing,check the supporting structure to be sure that it corner support legs.A Model SCE requires additional has sufficient load-carrying capacity to support the weight. support as illustrated in Figure 7.Bottom clearance of Net Weight(lbs and kg) 6" (152mm) to combustibles must be observed for all Size 100 125 150-175 200-225 250-300 350 400 models. SC/ lbs 158 178 203 283 321 350 410 HSC kg 72 81 92 128 146 159 186 SCA lbs 198 211 228 314 386 430 487 arilo kg 90 96 103 142 175 195 221 I a I Y7" Cabinet g (178mm) SCB lbs N/A 281 323 347 414 458 515 v K kg N/A 127 147 157 188 208 234 i '� ,�11�'SCE lbs N/A 313 358 382 482 498 560 1/a x 1-v2 Hes Head Lockwv4"Nuts !i ashrs kg N/A 142 162 173 219 226 254 ,,:,,111' \ Bolts Spacers Suspension -All Models le Iron Leg g Model SCA and SCB unit heaters and Model SC and HSC duct t 1 f' furnaces have two-point suspension.Model SCE packaged furnace/ 4"(102mm) Dril19/32"clearance holes in blower cabinet has four-point suspension. See hanger centerline1/4" `• angle iron leg and cabinet leg P P $ 2"x 2"x 2-1/4" dimensions in Paragraph 3. Angle Iron Leg i (57mm) At each suspension point,the unit is factory-equipped with a free- A A=6"(152mm)minimum height for turning, female, 1"NPT pipe hanger. Suspend byconnectingthe 6"x 6"s 1/4" clearance to combustibles.The recommended P P g 1� Metal Plate height is 8"(203mm)for plumbing and service pipe hanger to a 1"threaded pipe. See suspension method on the left in Figure 5.As an alternative method,the factory-installed pipe Furnace hanger may be removed and the heater suspended as illustrated on the right in Figure 5. ��`'r Shipping Bolt Lug WARNING: Units must be supported level for Figure 6-Model SC/HSC Retaining Screw '. Mounting Supports rrN,aas�(4cul proper operation. Do not place or add additional 1 • above-field fabricated6- weight to the suspended unit. See Hazard Levels, • right-available as a part t'g2°'m' page 2. Mounting Support(Model SCE) Standard Assembly Installer Replaced Assembly Model SCE requires six support locations.See Figure 7. 1"Pipe Flange Washer Nut AssemblySupports available from the manufacturer(P/N 74487)or field-fabricated legs as illustrated in Figure 6 may be used at the four corner support loca- tions.Do not use this type of support at the center support locations(be- r'Pipe I 3i8"Rod tween the furnace and the blower section).At the center locations,a field- Washer Nut Threaded # Assembly tandard fabricated,angle-iron brace support must extend horizontally,jointly sup- Socket .�(SAssembly porting a portion of both the furnace and the blower cabinet.All supports re, l --- I • Beater Top —oirtr ') Removed) must be non-combustible. Lthe ess through Figure 7-Model SCE Support Locations Figure 5-Suspension Methods the side panel g PP Mounting Supports (Model SC/HSC Duct Furnaces) Support between the Airllnw Most furnaces will be suspended.If the installation requires that the blower cabinet and ra_, furnace be mounted,support feet are available to mount the heater the furnace must and provide 6"(152mm)clearance.Figure 6 illustrates the support extend horizontally Blower section Furnace Section - feet available from the manufacturer and an alternative field-fabri- supporting both cated support foot. sections. ® \\ Form RZ 406, Mfg#132903,Page S "