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Heater Suspension <br /> D WARNING 0 <br /> • Before suspending the heater, check the supporting structure to be used to verify that it has <br /> sufficient load-carrying capacity to support the weight(refer to Weights section) of the unit. <br /> • The heater must be level for proper operation. DO NOT place or add additional weight to a <br /> suspended heater. <br /> CAUTION G� <br /> • Before lifting the heater, verify that any screws used for holding shipping brackets were re- <br /> installed in the cabinet. <br /> • Before lifting heater model UBZ or UDZ, any unused suspension points on the control side of <br /> the heater MUST be plugged. <br /> • When the heater is lifted for suspension,support the bottom of the heater with plywood or other <br /> appropriately placed material. If the bottom is not supported, damage could occur. <br /> • The heater is designed to be suspended using either two-or four-point suspension.A 3/8-16 threaded nut retainer <br /> is located at each suspension point.The heater may be suspended using either 3/8-inch threaded rods or a hanger <br /> kit option package. <br /> • On heater models UBX and UDX,shipped-separate option packages—that should be installed before the heater <br /> is suspended—include vertical louvers, high-elevation kit, multiple heater control, sensor for DDC control, and/ <br /> or stepdown transformer. Installation instructions for these option packages are included in the option package, <br /> • In the literature bag shipped with the heater, there are three capscrews (PN 203311) and sealing washers (PN <br /> 61658). On UBZ and UDZ models, these capscrews and washers must be used to seal any unused holes in the <br /> top of the heater(control side) after attaching the hanging hardware (see Figure 5). <br /> PLUG ANY UNUSED SUSPENSION POINT(S) <br /> a <br /> Figure 5. Plugging Unused Suspension Points (Models UBZ and UDZ Only) <br /> I-UBX-UBZ-UDX-UDZ(04-21)1034344-0 17 <br />