3The equipment must always be properly supported. Tempo-rary supports used during installation or service must be ade-quate to hold the equipment securely. Equipment should al-ways be stored in the proper orientation as marked on the car-ton. To maintain warranty, protect units against hostileenvironment (such as rain, snow, or extreme temperatures),theft, vandalism, and debris on jobsite. Equipment covered inthis manual is not suitable for outdoor installations. Do not al-low foreign material to fall into drain pan. Prevent dust anddebris from being deposited on motor, fan wheels and cool-ing/heating coils. Failure to do so may have serious adverseeffects on unit operation, and in the case of the motor andblower assembly, may result in immediate or premature fail-ure. Manufacturer's warranty is void if foreign material is al-lowed to be deposited on the motor or blower wheels of anyunit. Some units and/or job conditions may require someform of temporary covering during construction.Prepare Jobsite for Unit InstallationTo save time and to reduce the possibility of costly errors, setup a complete sample installation in a typical room at jobsite.Check all critical dimensions such as pipe, wire, and ductconnection requirements. Refer to job drawings and productdimension drawings as required (see Fig. 2-11). Instruct alltrades in their part of the installation.Table 1 — Physical Data — 42S Series Units*Calculate Operating Weight of Unit: Shipping Weight + Coil Water Weight x Number of Coil Rows.†42SJ units require two filters.UNIT SIZE 42S 03 04 06 08 10 12 14 16 20NOMINAL AIRFLOW (cfm) 300 400 600 800 1000 1200 1400 1600 2000SHIPPING WEIGHT (lb)*42SGA,SGM,SU 180 225 240 260 280 305 — — —42SH 202 247 262 286 311 336 — — —42SJ 360 450 480 520 560 610 — — —42SGS 162 203 216 234 252 275 — — —42SM — — — — — — 390 390 390COILSFPI 14 fins/inchBLOWER (qty)42SGA,SH,SU,SGM,SGS,SM 1 1 1 1 1 1 1 1 142SJ 2 2 2 2 2 2 — — —FILTERSNominal Size (in.) (1-in. thick) 12 1/ 2 x 24 1/ 4 16 1/ 4 x 26 3/ 4 20 1/2 x 29 1/4 241/2 x 291/2 26 1/ 2 x 29 1/ 2Qty 1†PIPING CONNECTIONSInlet (in. OD) 1/ 2, unless larger size valve package is selected